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* [PATCH 4.9 000/240] 4.9.269-rc1 review
@ 2021-05-20  9:19 Greg Kroah-Hartman
  2021-05-20  9:19 ` [PATCH 4.9 001/240] net: usb: ax88179_178a: initialize local variables before use Greg Kroah-Hartman
                   ` (244 more replies)
  0 siblings, 245 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:19 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, torvalds, akpm, linux, shuah, patches,
	lkft-triage, pavel, jonathanh, f.fainelli, stable

This is the start of the stable review cycle for the 4.9.269 release.
There are 240 patches in this series, all will be posted as a response
to this one.  If anyone has any issues with these being applied, please
let me know.

Responses should be made by Sat, 22 May 2021 09:20:38 +0000.
Anything received after that time might be too late.

The whole patch series can be found in one patch at:
	https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.9.269-rc1.gz
or in the git tree and branch at:
	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.9.y
and the diffstat can be found below.

thanks,

greg k-h

-------------
Pseudo-Shortlog of commits:

Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Linux 4.9.269-rc1

Eric Dumazet <edumazet@google.com>
    ipv6: remove extra dev_hold() for fallback tunnels

Christophe JAILLET <christophe.jaillet@wanadoo.fr>
    xhci: Do not use GFP_KERNEL in (potentially) atomic context

Eric Dumazet <edumazet@google.com>
    ip6_tunnel: sit: proper dev_{hold|put} in ndo_[un]init methods

Eric Dumazet <edumazet@google.com>
    sit: proper dev_{hold|put} in ndo_[un]init methods

Zqiang <qiang.zhang@windriver.com>
    lib: stackdepot: turn depot_lock spinlock to raw_spinlock

Hui Wang <hui.wang@canonical.com>
    ALSA: hda: generic: change the DAC ctl name for LO+SPK or LO+HP

Jeff Layton <jlayton@kernel.org>
    ceph: fix fscache invalidation

Johannes Berg <johannes.berg@intel.com>
    um: Mark all kernel symbols as local

Hans de Goede <hdegoede@redhat.com>
    Input: silead - add workaround for x86 BIOS-es which bring the chip up in a stuck state

Feilong Lin <linfeilong@huawei.com>
    ACPI / hotplug / PCI: Fix reference count leak in enable_slot()

Ard Biesheuvel <ardb@kernel.org>
    ARM: 9058/1: cache-v7: refactor v7_invalidate_l1 to avoid clobbering r5/r6

Arnd Bergmann <arnd@arndb.de>
    isdn: capi: fix mismatched prototypes

Kaixu Xia <kaixuxia@tencent.com>
    cxgb4: Fix the -Wmisleading-indentation warning

Arnd Bergmann <arnd@arndb.de>
    usb: sl811-hcd: improve misleading indentation

Arnd Bergmann <arnd@arndb.de>
    kgdb: fix gcc-11 warning on indentation

Peter Foley <pefoley2@pefoley.com>
    extcon: adc-jack: Fix incompatible pointer type warning

Arnd Bergmann <arnd@arndb.de>
    x86/msr: Fix wr/rdmsr_safe_regs_on_cpu() prototypes

Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
    clk: exynos7: Mark aclk_fsys1_200 as critical

Jonathon Reinhart <jonathon.reinhart@gmail.com>
    netfilter: conntrack: Make global sysctls readonly in non-init netns

Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    kobject_uevent: remove warning in init_uevent_argv()

Mikulas Patocka <mpatocka@redhat.com>
    dm ioctl: fix out of bounds array access when no devices

Lukasz Luba <lukasz.luba@arm.com>
    thermal/core/fair share: Lock the thermal zone while looping over instances

Maciej W. Rozycki <macro@orcam.me.uk>
    MIPS: Avoid handcoded DIVU in `__div64_32' altogether

Maciej W. Rozycki <macro@orcam.me.uk>
    MIPS: Avoid DIVU in `__div64_32' is result would be zero

Maciej W. Rozycki <macro@orcam.me.uk>
    MIPS: Reinstate platform `__div64_32' handler

Maciej W. Rozycki <macro@orcam.me.uk>
    FDDI: defxx: Make MMIO the configuration default except for EISA

Thomas Gleixner <tglx@linutronix.de>
    KVM: x86: Cancel pvclock_gtod_work on module removal

Chunfeng Yun <chunfeng.yun@mediatek.com>
    usb: core: hub: fix race condition about TRSMRCY of resume

Phil Elwell <phil@raspberrypi.com>
    usb: dwc2: Fix gadget DMA unmap direction

Maximilian Luz <luzmaximilian@gmail.com>
    usb: xhci: Increase timeout for HC halt

Christophe JAILLET <christophe.jaillet@wanadoo.fr>
    ACPI: scan: Fix a memory leak in an error handling path

Christophe JAILLET <christophe.jaillet@wanadoo.fr>
    usb: fotg210-hcd: Fix an error message

Dinghao Liu <dinghao.liu@zju.edu.cn>
    iio: proximity: pulsedlight: Fix rumtime PM imbalance on error

Phillip Lougher <phillip@squashfs.org.uk>
    squashfs: fix divide error in calculate_skip()

Michael Ellerman <mpe@ellerman.id.au>
    powerpc/64s: Fix crashes when toggling entry flush barrier

Vineet Gupta <vgupta@synopsys.com>
    ARC: entry: fix off-by-one error in syscall number validation

Jia-Ju Bai <baijiaju1990@gmail.com>
    kernel: kexec_file: fix error return code of kexec_calculate_store_digests()

Miaohe Lin <linmiaohe@huawei.com>
    ksm: fix potential missing rmap_item for stable_node

Miaohe Lin <linmiaohe@huawei.com>
    mm/hugeltb: handle the error case in hugetlb_fix_reserve_counts()

Miaohe Lin <linmiaohe@huawei.com>
    khugepaged: fix wrong result value for trace_mm_collapse_huge_page_isolate()

Kees Cook <keescook@chromium.org>
    drm/radeon: Fix off-by-one power_state index heap overwrite

Xin Long <lucien.xin@gmail.com>
    sctp: fix a SCTP_MIB_CURRESTAB leak in sctp_sf_do_dupcook_b

Olga Kornievskaia <kolga@netapp.com>
    NFSv4.2 fix handling of sr_eof in SEEK's reply

Nikola Livic <nlivic@gmail.com>
    pNFS/flexfiles: fix incorrect size check in decode_nfs_fh()

Trond Myklebust <trond.myklebust@hammerspace.com>
    NFS: Deal correctly with attribute generation counter overflow

Trond Myklebust <trond.myklebust@hammerspace.com>
    NFSv4.2: Always flush out writes in nfs42_proc_fallocate()

Zhen Lei <thunder.leizhen@huawei.com>
    ARM: 9064/1: hw_breakpoint: Do not directly check the event's overflow_handler hook

Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
    PCI: Release OF node in pci_scan_device()'s error path

Colin Ian King <colin.king@canonical.com>
    f2fs: fix a redundant call to f2fs_balance_fs if an error occurs

David Ward <david.ward@gatech.edu>
    ASoC: rt286: Make RT286_SET_GPIO_* readable and writable

Felix Fietkau <nbd@nbd.name>
    net: ethernet: mtk_eth_soc: fix RX VLAN offload

Alexey Kardashevskiy <aik@ozlabs.ru>
    powerpc/iommu: Annotate nested lock for lockdep

Gustavo A. R. Silva <gustavoars@kernel.org>
    wl3501_cs: Fix out-of-bounds warnings in wl3501_mgmt_join

Gustavo A. R. Silva <gustavoars@kernel.org>
    wl3501_cs: Fix out-of-bounds warnings in wl3501_send_pkt

Michael Ellerman <mpe@ellerman.id.au>
    powerpc/pseries: Stop calling printk in rtas_stop_self()

Yaqi Chen <chendotjs@gmail.com>
    samples/bpf: Fix broken tracex1 due to kprobe argument change

David Ward <david.ward@gatech.edu>
    ASoC: rt286: Generalize support for ALC3263 codec

Gustavo A. R. Silva <gustavoars@kernel.org>
    sctp: Fix out-of-bounds warning in sctp_process_asconf_param()

Mihai Moldovan <ionic@ionic.de>
    kconfig: nconf: stop endless search loops

Yonghong Song <yhs@fb.com>
    selftests: Set CC to clang in lib.mk if LLVM is set

Miklos Szeredi <mszeredi@redhat.com>
    cuse: prevent clone

Emmanuel Grumbach <emmanuel.grumbach@intel.com>
    mac80211: clear the beacon's CRC after channel switch

Eric Dumazet <edumazet@google.com>
    ip6_vti: proper dev_{hold|put} in ndo_[un]init methods

Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
    Bluetooth: initialize skb_queue_head at l2cap_chan_create()

Archie Pusaka <apusaka@chromium.org>
    Bluetooth: Set CONF_NOT_COMPLETE as l2cap_chan default

Tong Zhang <ztong0001@gmail.com>
    ALSA: rme9652: don't disable if not enabled

Tong Zhang <ztong0001@gmail.com>
    ALSA: hdspm: don't disable if not enabled

Tong Zhang <ztong0001@gmail.com>
    ALSA: hdsp: don't disable if not enabled

Jonathan McDowell <noodles@earth.li>
    net: stmmac: Set FIFO sizes for ipq806x

Hoang Le <hoang.h.le@dektech.com.au>
    tipc: convert dest node's address to network order

Alexander Aring <aahringo@redhat.com>
    fs: dlm: fix debugfs dump

Quentin Perret <qperret@google.com>
    Revert "fdt: Properly handle "no-map" field in the memory region"

Quentin Perret <qperret@google.com>
    Revert "of/fdt: Make sure no-map does not remove already reserved regions"

Xin Long <lucien.xin@gmail.com>
    sctp: delay auto_asconf init until binding the first addr

Xin Long <lucien.xin@gmail.com>
    Revert "net/sctp: fix race condition in sctp_destroy_sock"

Dan Carpenter <dan.carpenter@oracle.com>
    kfifo: fix ternary sign extension bugs

Lv Yunlong <lyl2019@mail.ustc.edu.cn>
    net:nfc:digital: Fix a double free in digital_tg_recv_dep_req

Lv Yunlong <lyl2019@mail.ustc.edu.cn>
    net:emac/emac-mac: Fix a use after free in emac_mac_tx_buf_send

Christophe Leroy <christophe.leroy@csgroup.eu>
    powerpc/52xx: Fix an invalid ASM expression ('addi' used instead of 'add')

Toke Høiland-Jørgensen <toke@redhat.com>
    ath9k: Fix error check in ath9k_hw_read_revisions() for PCI devices

Colin Ian King <colin.king@canonical.com>
    net: davinci_emac: Fix incorrect masking of tx and rx error channel

Sindhu Devale <sindhu.devale@intel.com>
    RDMA/i40iw: Fix error unwinding when i40iw_hmc_sd_one fails

Stefano Garzarella <sgarzare@redhat.com>
    vsock/vmci: log once the failed queue pair allocation

Lv Yunlong <lyl2019@mail.ustc.edu.cn>
    mwl8k: Fix a double Free in mwl8k_probe_hw

Sergey Shtylyov <s.shtylyov@omprussia.ru>
    i2c: sh7760: fix IRQ error path

Tyrel Datwyler <tyreld@linux.ibm.com>
    powerpc/pseries: extract host bridge from pci_bus prior to bus removal

Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
    MIPS: pci-legacy: stop using of_pci_range_to_resource

Sergey Shtylyov <s.shtylyov@omprussia.ru>
    i2c: sh7760: add IRQ check

Sergey Shtylyov <s.shtylyov@omprussia.ru>
    i2c: jz4780: add IRQ check

Sergey Shtylyov <s.shtylyov@omprussia.ru>
    i2c: emev2: add IRQ check

Sergey Shtylyov <s.shtylyov@omprussia.ru>
    i2c: cadence: add IRQ check

Colin Ian King <colin.king@canonical.com>
    net: thunderx: Fix unintentional sign extension issue

Colin Ian King <colin.king@canonical.com>
    mt7601u: fix always true expression

Johannes Berg <johannes.berg@intel.com>
    mac80211: bail out if cipher schemes are invalid

Randy Dunlap <rdunlap@infradead.org>
    powerpc: iommu: fix build when neither PCI or IBMVIO is set

Athira Rajeev <atrajeev@linux.vnet.ibm.com>
    powerpc/perf: Fix PMU constraint check for EBB events

Colin Ian King <colin.king@canonical.com>
    liquidio: Fix unintented sign extension of a left shift of a u16

Takashi Iwai <tiwai@suse.de>
    ALSA: usb-audio: Add error checks for usb_driver_claim_interface() calls

Dan Carpenter <dan.carpenter@oracle.com>
    nfc: pn533: prevent potential memory corruption

Jia Zhou <zhou.jia2@zte.com.cn>
    ALSA: core: remove redundant spin_lock pair in snd_card_disconnect

Nathan Chancellor <nathan@kernel.org>
    powerpc/prom: Mark identical_pvr_fixup as __init

Xie He <xie.he.0141@gmail.com>
    net: lapbether: Prevent racing when checking whether the netif is running

Arnaldo Carvalho de Melo <acme@redhat.com>
    perf symbols: Fix dso__fprintf_symbols_by_name() to return the number of printed chars

Maxim Mikityanskiy <maxtram95@gmail.com>
    HID: plantronics: Workaround for double volume key presses

Nathan Chancellor <nathan@kernel.org>
    x86/events/amd/iommu: Fix sysfs type mismatch

Dan Carpenter <dan.carpenter@oracle.com>
    HSI: core: fix resource leaks in hsi_add_client_from_dt()

Sergey Shtylyov <s.shtylyov@omprussia.ru>
    scsi: sni_53c710: Add IRQ check

Sergey Shtylyov <s.shtylyov@omprussia.ru>
    scsi: sun3x_esp: Add IRQ check

Sergey Shtylyov <s.shtylyov@omprussia.ru>
    scsi: jazz_esp: Add IRQ check

Colin Ian King <colin.king@canonical.com>
    clk: uniphier: Fix potential infinite loop

Arnd Bergmann <arnd@arndb.de>
    media: dvb-usb-remote: fix dvb_usb_nec_rc_key_to_event type mismatch

Arnd Bergmann <arnd@arndb.de>
    scsi: fcoe: Fix mismatched fcoe_wwn_from_mac declaration

Sergey Shtylyov <s.shtylyov@omprussia.ru>
    ata: libahci_platform: fix IRQ check

Sergey Shtylyov <s.shtylyov@omprussia.ru>
    sata_mv: add IRQ checks

Sergey Shtylyov <s.shtylyov@omprussia.ru>
    pata_ipx4xx_cf: fix IRQ check

Sergey Shtylyov <s.shtylyov@omprussia.ru>
    pata_arasan_cf: fix IRQ check

Colin Ian King <colin.king@canonical.com>
    media: m88rs6000t: avoid potential out-of-bounds reads on arrays

Yang Yingliang <yangyingliang@huawei.com>
    media: omap4iss: return error code when omap4iss_get() failed

Colin Ian King <colin.king@canonical.com>
    media: vivid: fix assignment of dev->fbuf_out_flags

Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
    ttyprintk: Add TTY hangup callback.

Michael Kelley <mikelley@microsoft.com>
    Drivers: hv: vmbus: Increase wait time for VMbus unload

Ingo Molnar <mingo@kernel.org>
    x86/platform/uv: Fix !KEXEC build failure

He Ying <heying24@huawei.com>
    firmware: qcom-scm: Fix QCOM_SCM configuration

Johan Hovold <johan@kernel.org>
    tty: fix return value for unsupported ioctls

Johan Hovold <johan@kernel.org>
    tty: actually undefine superseded ASYNC flags

Johan Hovold <johan@kernel.org>
    USB: cdc-acm: fix unprivileged TIOCCSERIAL

Colin Ian King <colin.king@canonical.com>
    usb: gadget: r8a66597: Add missing null check on return from platform_get_resource

Lv Yunlong <lyl2019@mail.ustc.edu.cn>
    crypto: qat - Fix a double free in adf_create_ring

Johan Hovold <johan@kernel.org>
    staging: greybus: uart: fix unprivileged TIOCCSERIAL

Colin Ian King <colin.king@canonical.com>
    staging: rtl8192u: Fix potential infinite loop

Lv Yunlong <lyl2019@mail.ustc.edu.cn>
    mtd: rawnand: gpmi: Fix a double free in gpmi_nand_init

Giovanni Cabiddu <giovanni.cabiddu@intel.com>
    crypto: qat - fix error path in adf_isr_resource_alloc()

Pan Bian <bianpan2016@163.com>
    bus: qcom: Put child node before return

Michael Walle <michael@walle.cc>
    mtd: require write permissions for locking and badblock ioctls

Fabian Vogt <fabian@ritter-vogt.de>
    fotg210-udc: Complete OUT requests on short packets

Fabian Vogt <fabian@ritter-vogt.de>
    fotg210-udc: Don't DMA more than the buffer can take

Fabian Vogt <fabian@ritter-vogt.de>
    fotg210-udc: Mask GRP2 interrupts we don't handle

Fabian Vogt <fabian@ritter-vogt.de>
    fotg210-udc: Remove a dubious condition leading to fotg210_done

Fabian Vogt <fabian@ritter-vogt.de>
    fotg210-udc: Fix EP0 IN requests bigger than two packets

Fabian Vogt <fabian@ritter-vogt.de>
    fotg210-udc: Fix DMA on EP0 for length > max packet size

Tong Zhang <ztong0001@gmail.com>
    crypto: qat - ADF_STATUS_PF_RUNNING should be set after adf_dev_init

Tong Zhang <ztong0001@gmail.com>
    crypto: qat - don't release uninitialized resources

Andy Shevchenko <andriy.shevchenko@linux.intel.com>
    usb: gadget: pch_udc: Check for DMA mapping error

Andy Shevchenko <andriy.shevchenko@linux.intel.com>
    usb: gadget: pch_udc: Check if driver is present before calling ->setup()

Andy Shevchenko <andriy.shevchenko@linux.intel.com>
    usb: gadget: pch_udc: Replace cpu_to_le32() by lower_32_bits()

Erwan Le Ray <erwan.leray@foss.st.com>
    serial: stm32: fix incorrect characters on console

Krzysztof Kozlowski <krzk@kernel.org>
    ARM: dts: exynos: correct PMIC interrupt trigger level on Snow

Krzysztof Kozlowski <krzk@kernel.org>
    ARM: dts: exynos: correct PMIC interrupt trigger level on SMDK5250

Colin Ian King <colin.king@canonical.com>
    memory: gpmc: fix out of bounds read and dereference on gpmc_cs[]

Andy Shevchenko <andriy.shevchenko@linux.intel.com>
    usb: gadget: pch_udc: Revert d3cb25a12138 completely

Takashi Iwai <tiwai@suse.de>
    ALSA: hda/realtek: Remove redundant entry for ALC861 Haier/Uniwill devices

Takashi Iwai <tiwai@suse.de>
    ALSA: hda/realtek: Re-order ALC269 Lenovo quirk table entries

Takashi Iwai <tiwai@suse.de>
    ALSA: hda/realtek: Re-order ALC269 Sony quirk table entries

Takashi Iwai <tiwai@suse.de>
    ALSA: hda/realtek: Re-order ALC882 Sony quirk table entries

Takashi Iwai <tiwai@suse.de>
    ALSA: hda/realtek: Re-order ALC882 Acer quirk table entries

Colin Ian King <colin.king@canonical.com>
    drm/radeon: fix copy of uninitialized variable back to userspace

Johannes Berg <johannes.berg@intel.com>
    cfg80211: scan: drop entry from hidden_list on overflow

Dan Carpenter <dan.carpenter@oracle.com>
    ipw2x00: potential buffer overflow in libipw_wx_set_encodeext()

Zhao Heming <heming.zhao@suse.com>
    md: md_open returns -EBUSY when entering racing area

Christoph Hellwig <hch@lst.de>
    md: factor out a mddev_find_locked helper from mddev_find

Heming Zhao <heming.zhao@suse.com>
    md-cluster: fix use-after-free issue when removing rdev

Steven Rostedt (VMware) <rostedt@goodmis.org>
    tracing: Restructure trace_clock_global() to never block

Steven Rostedt (VMware) <rostedt@goodmis.org>
    tracing: Map all PIDs to command lines

Amey Telawane <ameyt@codeaurora.org>
    tracing: Use strlcpy() instead of strcpy() in __trace_find_cmdline()

Joel Fernandes <joelaf@google.com>
    tracing: Treat recording comm for idle task as a success

Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
    misc: vmw_vmci: explicitly initialize vmci_datagram payload

Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
    misc: vmw_vmci: explicitly initialize vmci_notify_bm_set_msg struct

Hans de Goede <hdegoede@redhat.com>
    misc: lis3lv02d: Fix false-positive WARN on various HP models

Maciej W. Rozycki <macro@orcam.me.uk>
    FDDI: defxx: Bail out gracefully with unassigned PCI resource for CSR

Or Cohen <orcohen@paloaltonetworks.com>
    net/nfc: fix use-after-free llcp_sock_bind/connect

Lin Ma <linma@zju.edu.cn>
    bluetooth: eliminate the potential race condition when removing the HCI controller

Taehee Yoo <ap420073@gmail.com>
    hsr: use netdev_err() instead of WARN_ONCE()

Archie Pusaka <apusaka@chromium.org>
    Bluetooth: verify AMP hci_chan before amp_destroy

Benjamin Block <bblock@linux.ibm.com>
    dm rq: fix double free of blk_mq_tag_set in dev remove after table load fails

Joe Thornber <ejt@redhat.com>
    dm space map common: fix division bug in sm_ll_find_free_block()

Joe Thornber <ejt@redhat.com>
    dm persistent data: packed struct should have an aligned() attribute too

Dean Anderson <dean@sensoray.com>
    usb: gadget/function/f_fs string table fix for multiple languages

Hemant Kumar <hemantk@codeaurora.org>
    usb: gadget: Fix double free of device descriptor pointers

Anirudh Rayabharam <mail@anirudhrb.com>
    usb: gadget: dummy_hcd: fix gpf in gadget_setup

Peilin Ye <yepeilin.cs@gmail.com>
    media: dvbdev: Fix memory leak in dvb_media_device_free()

Fengnan Chang <changfengnan@vivo.com>
    ext4: fix error code in ext4_commit_super

Zhang Yi <yi.zhang@huawei.com>
    ext4: fix check to prevent false positive report of incorrect used inodes

Steven Rostedt (VMware) <rostedt@goodmis.org>
    ftrace: Handle commands when closing set_ftrace_filter file

Thomas Gleixner <tglx@linutronix.de>
    Revert 337f13046ff0 ("futex: Allow FUTEX_CLOCK_REALTIME with FUTEX_WAIT op")

Yang Yang <yang.yang29@zte.com.cn>
    jffs2: check the validity of dstlen in jffs2_zlib_compress()

Tony Ambardar <tony.ambardar@gmail.com>
    powerpc: fix EDEADLOCK redefinition error in uapi/asm/errno.h

Mahesh Salgaonkar <mahesh@linux.ibm.com>
    powerpc/eeh: Fix EEH handling for hugepages in ioremap space.

lizhe <lizhe67@huawei.com>
    jffs2: Fix kasan slab-out-of-bounds problem

Trond Myklebust <trond.myklebust@hammerspace.com>
    NFSv4: Don't discard segments marked for return in _pnfs_return_layout()

Davide Caratti <dcaratti@redhat.com>
    openvswitch: fix stack OOB read while fragmenting IPv4 packets

Bill Wendling <morbo@google.com>
    arm64/vdso: Discard .note.gnu.property sections in vDSO

Lv Yunlong <lyl2019@mail.ustc.edu.cn>
    ALSA: sb: Fix two use after free in snd_sb_qsound_build

Lv Yunlong <lyl2019@mail.ustc.edu.cn>
    ALSA: emu8000: Fix a use after free in snd_emu8000_create_mixer

Bart Van Assche <bvanassche@acm.org>
    scsi: libfc: Fix a format specifier

James Smart <jsmart2021@gmail.com>
    scsi: lpfc: Fix crash when a REG_RPI mailbox fails triggering a LOGO response

Guchun Chen <guchun.chen@amd.com>
    drm/amdgpu: fix NULL pointer dereference

Marijn Suijten <marijn.suijten@somainline.org>
    drm/msm/mdp5: Configure PP_SYNC_HEIGHT to double the vtotal

Hans Verkuil <hverkuil-cisco@xs4all.nl>
    media: gscpa/stv06xx: fix memory leak

Pavel Skripkin <paskripkin@gmail.com>
    media: dvb-usb: fix memory leak in dvb_usb_adapter_init

Yang Yingliang <yangyingliang@huawei.com>
    media: i2c: adv7842: fix possible use-after-free in adv7842_remove()

Yang Yingliang <yangyingliang@huawei.com>
    media: i2c: adv7511-v4l2: fix possible use-after-free in adv7511_remove()

Yang Yingliang <yangyingliang@huawei.com>
    media: adv7604: fix possible use-after-free in adv76xx_remove()

Yang Yingliang <yangyingliang@huawei.com>
    power: supply: s3c_adc_battery: fix possible use-after-free in s3c_adc_bat_remove()

Yang Yingliang <yangyingliang@huawei.com>
    power: supply: generic-adc-battery: fix possible use-after-free in gab_remove()

Colin Ian King <colin.king@canonical.com>
    clk: socfpga: arria10: Fix memory leak of socfpga_clk on error return

Muhammad Usama Anjum <musamaanjum@gmail.com>
    media: em28xx: fix memory leak

Ewan D. Milne <emilne@redhat.com>
    scsi: scsi_dh_alua: Remove check for ASC 24h in alua_rtpg()

Bart Van Assche <bvanassche@acm.org>
    scsi: qla2xxx: Always check the return value of qla24xx_get_isp_stats()

dongjian <dongjian@yulong.com>
    power: supply: Use IRQF_ONESHOT

Hans Verkuil <hverkuil-cisco@xs4all.nl>
    media: gspca/sq905.c: fix uninitialized variable

Daniel Niv <danielniv3@gmail.com>
    media: media/saa7164: fix saa7164_encoder_register() memory leak bugs

Hans de Goede <hdegoede@redhat.com>
    extcon: arizona: Fix some issues when HPDET IRQ fires after the jack has been unplugged

Sean Young <sean@mess.org>
    media: ite-cir: check for receive overflow

Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
    scsi: target: pscsi: Fix warning in pscsi_complete_cmd()

Josef Bacik <josef@toxicpanda.com>
    btrfs: convert logic BUG_ON()'s in replace_path to ASSERT()'s

Yang Yingliang <yangyingliang@huawei.com>
    phy: phy-twl4030-usb: Fix possible use-after-free in twl4030_usb_remove()

Pavel Machek <pavel@ucw.cz>
    intel_th: Consistency and off-by-one fix

Wei Yongjun <weiyongjun1@huawei.com>
    spi: omap-100k: Fix reference leak to master

Wei Yongjun <weiyongjun1@huawei.com>
    spi: dln2: Fix reference leak to master

John Millikin <john@john-millikin.com>
    x86/build: Propagate $(CLANG_FLAGS) to $(REALMODE_FLAGS)

Rafael J. Wysocki <rafael.j.wysocki@intel.com>
    PCI: PM: Do not read power state in pci_enable_device_flags()

Thinh Nguyen <Thinh.Nguyen@synopsys.com>
    usb: xhci: Fix port minor revision

Wesley Cheng <wcheng@codeaurora.org>
    usb: dwc3: gadget: Ignore EP queue requests during bus reset

Pawel Laszczak <pawell@cadence.com>
    usb: gadget: uvc: add bInterval checking for HS mode

karthik alapati <mail@karthek.com>
    staging: wimax/i2400m: fix byte-order issue

Phillip Potter <phil@philpotter.co.uk>
    fbdev: zero-fill colormap in fbcmap.c

Filipe Manana <fdmanana@suse.com>
    btrfs: fix metadata extent leak after failure to create subvolume

Seunghui Lee <sh043.lee@samsung.com>
    mmc: core: Set read only for SD cards with permanent write protect bit

DooHyun Hwang <dh0421.hwang@samsung.com>
    mmc: core: Do a power cycle when the CMD11 fails

Jeffrey Mitchell <jeffrey.mitchell@starlab.io>
    ecryptfs: fix kernel panic with null dev_name

Chunfeng Yun <chunfeng.yun@mediatek.com>
    arm64: dts: mt8173: fix property typo of 'phys' in dsi node

Mark Langsdorf <mlangsdo@redhat.com>
    ACPI: custom_method: fix a possible memory leak

Mark Langsdorf <mlangsdo@redhat.com>
    ACPI: custom_method: fix potential use-after-free issue

Vasily Gorbik <gor@linux.ibm.com>
    s390/disassembler: increase ebpf disasm buffer size

Mark Pearson <markpearson@lenovo.com>
    platform/x86: thinkpad_acpi: Correct thermal sensor allocation

Chris Chiu <chris.chiu@canonical.com>
    USB: Add reset-resume quirk for WD19's Realtek Hub

Kai-Heng Feng <kai.heng.feng@canonical.com>
    USB: Add LPM quirk for Lenovo ThinkPad USB-C Dock Gen2 Ethernet

Takashi Iwai <tiwai@suse.de>
    ALSA: usb-audio: Add MIDI quirk for Vox ToneLab EX

Jiri Kosina <jkosina@suse.cz>
    iwlwifi: Fix softirq/hardirq disabling in iwl_pcie_enqueue_hcmd()

Phillip Potter <phil@philpotter.co.uk>
    net: usb: ax88179_178a: initialize local variables before use


-------------

Diffstat:

 Makefile                                           |  4 +-
 arch/arc/kernel/entry.S                            |  4 +-
 arch/arm/boot/dts/exynos5250-smdk5250.dts          |  2 +-
 arch/arm/boot/dts/exynos5250-snow-common.dtsi      |  2 +-
 arch/arm/kernel/hw_breakpoint.c                    |  2 +-
 arch/arm/mm/cache-v7.S                             | 51 +++++++++---------
 arch/arm64/boot/dts/mediatek/mt8173.dtsi           |  2 +-
 arch/arm64/kernel/vdso/vdso.lds.S                  |  8 ++-
 arch/mips/include/asm/div64.h                      | 55 ++++++++++++++------
 arch/mips/pci/pci-legacy.c                         |  9 +++-
 arch/powerpc/Kconfig.debug                         |  1 +
 arch/powerpc/include/uapi/asm/errno.h              |  1 +
 arch/powerpc/kernel/eeh.c                          | 11 ++--
 arch/powerpc/kernel/iommu.c                        |  4 +-
 arch/powerpc/kernel/prom.c                         |  2 +-
 arch/powerpc/lib/feature-fixups.c                  | 17 +++++-
 arch/powerpc/perf/isa207-common.c                  |  4 +-
 arch/powerpc/platforms/52xx/lite5200_sleep.S       |  2 +-
 arch/powerpc/platforms/pseries/hotplug-cpu.c       |  3 --
 arch/powerpc/platforms/pseries/pci_dlpar.c         |  4 +-
 arch/s390/kernel/dis.c                             |  2 +-
 arch/um/kernel/dyn.lds.S                           |  6 +++
 arch/um/kernel/uml.lds.S                           |  6 +++
 arch/x86/Kconfig                                   |  1 +
 arch/x86/Makefile                                  |  1 +
 arch/x86/events/amd/iommu.c                        |  6 +--
 arch/x86/kvm/x86.c                                 |  1 +
 arch/x86/lib/msr-smp.c                             |  4 +-
 drivers/acpi/custom_method.c                       |  4 +-
 drivers/acpi/scan.c                                |  1 +
 drivers/ata/libahci_platform.c                     |  4 +-
 drivers/ata/pata_arasan_cf.c                       | 15 ++++--
 drivers/ata/pata_ixp4xx_cf.c                       |  6 ++-
 drivers/ata/sata_mv.c                              |  4 ++
 drivers/bus/qcom-ebi2.c                            |  4 +-
 drivers/char/ttyprintk.c                           | 11 ++++
 drivers/clk/samsung/clk-exynos7.c                  |  7 ++-
 drivers/clk/socfpga/clk-gate-a10.c                 |  1 +
 drivers/clk/uniphier/clk-uniphier-mux.c            |  4 +-
 drivers/crypto/qat/qat_c3xxxvf/adf_drv.c           |  4 +-
 drivers/crypto/qat/qat_c62xvf/adf_drv.c            |  4 +-
 drivers/crypto/qat/qat_common/adf_isr.c            | 29 ++++++++---
 drivers/crypto/qat/qat_common/adf_transport.c      |  1 +
 drivers/crypto/qat/qat_common/adf_vf_isr.c         | 17 ++++--
 drivers/crypto/qat/qat_dh895xccvf/adf_drv.c        |  4 +-
 drivers/extcon/extcon-arizona.c                    | 17 +++---
 drivers/firmware/Kconfig                           |  1 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c            |  2 +-
 drivers/gpu/drm/msm/mdp/mdp5/mdp5_cmd_encoder.c    | 10 +++-
 drivers/gpu/drm/radeon/radeon_atombios.c           |  6 +--
 drivers/gpu/drm/radeon/radeon_kms.c                |  1 +
 drivers/hid/hid-ids.h                              |  1 +
 drivers/hid/hid-plantronics.c                      | 60 +++++++++++++++++++++-
 drivers/hsi/hsi_core.c                             |  3 +-
 drivers/hv/channel_mgmt.c                          | 30 +++++++++--
 drivers/hwtracing/intel_th/gth.c                   |  4 +-
 drivers/i2c/busses/i2c-cadence.c                   |  5 +-
 drivers/i2c/busses/i2c-emev2.c                     |  5 +-
 drivers/i2c/busses/i2c-jz4780.c                    |  5 +-
 drivers/i2c/busses/i2c-sh7760.c                    |  5 +-
 drivers/iio/proximity/pulsedlight-lidar-lite-v2.c  |  1 +
 drivers/infiniband/hw/i40iw/i40iw_pble.c           |  6 +--
 drivers/input/touchscreen/silead.c                 | 44 ++++++++++++++--
 drivers/isdn/capi/kcapi.c                          |  4 +-
 drivers/md/dm-ioctl.c                              |  2 +-
 drivers/md/dm-rq.c                                 |  2 +
 drivers/md/md.c                                    | 43 +++++++++-------
 drivers/md/persistent-data/dm-btree-internal.h     |  4 +-
 drivers/md/persistent-data/dm-space-map-common.c   |  2 +
 drivers/md/persistent-data/dm-space-map-common.h   |  8 +--
 drivers/media/dvb-core/dvbdev.c                    |  1 +
 drivers/media/i2c/adv7511-v4l2.c                   |  2 +-
 drivers/media/i2c/adv7604.c                        |  2 +-
 drivers/media/i2c/adv7842.c                        |  2 +-
 drivers/media/pci/saa7164/saa7164-encoder.c        | 20 ++++----
 drivers/media/platform/vivid/vivid-vid-out.c       |  2 +-
 drivers/media/rc/ite-cir.c                         |  8 ++-
 drivers/media/tuners/m88rs6000t.c                  |  6 +--
 drivers/media/usb/dvb-usb/dvb-usb-init.c           | 20 ++++++--
 drivers/media/usb/dvb-usb/dvb-usb.h                |  3 +-
 drivers/media/usb/em28xx/em28xx-dvb.c              |  1 +
 drivers/media/usb/gspca/gspca.c                    |  2 +
 drivers/media/usb/gspca/gspca.h                    |  1 +
 drivers/media/usb/gspca/sq905.c                    |  2 +-
 drivers/media/usb/gspca/stv06xx/stv06xx.c          |  9 ++++
 drivers/memory/omap-gpmc.c                         |  7 ++-
 drivers/misc/kgdbts.c                              | 26 +++++-----
 drivers/misc/lis3lv02d/lis3lv02d.c                 | 21 ++++++--
 drivers/misc/vmw_vmci/vmci_doorbell.c              |  2 +-
 drivers/misc/vmw_vmci/vmci_guest.c                 |  2 +-
 drivers/mmc/core/core.c                            |  2 +-
 drivers/mmc/core/sd.c                              |  6 +++
 drivers/mtd/mtdchar.c                              |  8 +--
 drivers/mtd/nand/gpmi-nand/gpmi-nand.c             |  2 +-
 .../net/ethernet/cavium/liquidio/cn23xx_pf_regs.h  |  2 +-
 drivers/net/ethernet/cavium/thunder/nicvf_queues.c |  2 +-
 drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c |  2 +-
 drivers/net/ethernet/mediatek/mtk_eth_soc.c        |  2 +-
 drivers/net/ethernet/mediatek/mtk_eth_soc.h        |  1 +
 drivers/net/ethernet/qualcomm/emac/emac-mac.c      |  4 +-
 .../net/ethernet/stmicro/stmmac/dwmac-ipq806x.c    |  2 +
 drivers/net/ethernet/ti/davinci_emac.c             |  4 +-
 drivers/net/fddi/Kconfig                           | 15 +++---
 drivers/net/fddi/defxx.c                           | 47 +++++++++++------
 drivers/net/usb/ax88179_178a.c                     |  4 +-
 drivers/net/wan/lapbether.c                        | 32 +++++++++---
 drivers/net/wimax/i2400m/op-rfkill.c               |  2 +-
 drivers/net/wireless/ath/ath9k/htc_drv_init.c      |  2 +-
 drivers/net/wireless/ath/ath9k/hw.c                |  2 +-
 drivers/net/wireless/intel/ipw2x00/libipw_wx.c     |  6 ++-
 drivers/net/wireless/intel/iwlwifi/pcie/tx.c       |  7 +--
 drivers/net/wireless/marvell/mwl8k.c               |  1 +
 drivers/net/wireless/mediatek/mt7601u/eeprom.c     |  2 +-
 drivers/net/wireless/wl3501.h                      | 47 +++++++++--------
 drivers/net/wireless/wl3501_cs.c                   | 54 ++++++++++---------
 drivers/nfc/pn533/pn533.c                          |  3 ++
 drivers/of/fdt.c                                   | 12 +----
 drivers/pci/hotplug/acpiphp_glue.c                 |  1 +
 drivers/pci/pci.c                                  | 16 ++----
 drivers/pci/probe.c                                |  1 +
 drivers/phy/phy-twl4030-usb.c                      |  2 +-
 drivers/platform/x86/thinkpad_acpi.c               | 31 +++++++----
 drivers/power/supply/generic-adc-battery.c         |  2 +-
 drivers/power/supply/lp8788-charger.c              |  2 +-
 drivers/power/supply/pm2301_charger.c              |  2 +-
 drivers/power/supply/s3c_adc_battery.c             |  2 +-
 drivers/power/supply/tps65090-charger.c            |  2 +-
 drivers/power/supply/tps65217_charger.c            |  2 +-
 drivers/scsi/device_handler/scsi_dh_alua.c         |  5 +-
 drivers/scsi/jazz_esp.c                            |  4 +-
 drivers/scsi/libfc/fc_lport.c                      |  2 +-
 drivers/scsi/lpfc/lpfc_nportdisc.c                 |  2 -
 drivers/scsi/lpfc/lpfc_sli.c                       |  1 -
 drivers/scsi/qla2xxx/qla_attr.c                    |  8 ++-
 drivers/scsi/sni_53c710.c                          |  5 +-
 drivers/scsi/sun3x_esp.c                           |  4 +-
 drivers/spi/spi-dln2.c                             |  2 +-
 drivers/spi/spi-omap-100k.c                        |  6 +--
 drivers/staging/greybus/uart.c                     |  2 -
 drivers/staging/media/omap4iss/iss.c               |  4 +-
 drivers/staging/rtl8192u/r8192U_core.c             |  2 +-
 drivers/target/target_core_pscsi.c                 |  3 +-
 drivers/thermal/fair_share.c                       |  4 ++
 drivers/tty/serial/stm32-usart.c                   | 12 ++++-
 drivers/tty/tty_io.c                               |  8 +--
 drivers/usb/class/cdc-acm.c                        |  2 -
 drivers/usb/core/hub.c                             |  6 +--
 drivers/usb/core/quirks.c                          |  4 ++
 drivers/usb/dwc2/core.h                            |  2 +
 drivers/usb/dwc2/gadget.c                          |  3 +-
 drivers/usb/dwc3/gadget.c                          |  9 ++++
 drivers/usb/gadget/config.c                        |  4 ++
 drivers/usb/gadget/function/f_fs.c                 |  3 +-
 drivers/usb/gadget/function/f_uvc.c                |  7 ++-
 drivers/usb/gadget/udc/dummy_hcd.c                 | 23 ++++++---
 drivers/usb/gadget/udc/fotg210-udc.c               | 26 +++++++---
 drivers/usb/gadget/udc/pch_udc.c                   | 49 ++++++++++++------
 drivers/usb/gadget/udc/r8a66597-udc.c              |  2 +
 drivers/usb/host/fotg210-hcd.c                     |  4 +-
 drivers/usb/host/sl811-hcd.c                       |  9 ++--
 drivers/usb/host/xhci-ext-caps.h                   |  5 +-
 drivers/usb/host/xhci-mem.c                        |  9 ++++
 drivers/usb/host/xhci.c                            |  6 +--
 drivers/video/fbdev/core/fbcmap.c                  |  8 +--
 fs/btrfs/ioctl.c                                   | 18 +++++--
 fs/btrfs/relocation.c                              |  6 +--
 fs/ceph/caps.c                                     |  1 +
 fs/ceph/inode.c                                    |  1 +
 fs/dlm/debug_fs.c                                  |  1 +
 fs/ecryptfs/main.c                                 |  6 +++
 fs/ext4/ialloc.c                                   | 48 +++++++++++------
 fs/ext4/super.c                                    |  6 ++-
 fs/f2fs/inline.c                                   |  3 +-
 fs/fuse/cuse.c                                     |  2 +
 fs/jffs2/compr_rtime.c                             |  3 ++
 fs/jffs2/scan.c                                    |  2 +-
 fs/nfs/flexfilelayout/flexfilelayout.c             |  2 +-
 fs/nfs/inode.c                                     |  8 +--
 fs/nfs/nfs42proc.c                                 | 21 +++++---
 fs/nfs/pnfs.c                                      |  2 +-
 fs/squashfs/file.c                                 |  6 +--
 include/linux/extcon/extcon-adc-jack.h             |  2 +-
 include/linux/hid.h                                |  2 +
 include/linux/tty_driver.h                         |  2 +-
 include/net/bluetooth/hci_core.h                   |  1 +
 include/scsi/libfcoe.h                             |  2 +-
 include/uapi/linux/tty_flags.h                     |  4 +-
 kernel/futex.c                                     |  3 +-
 kernel/kexec_file.c                                |  4 +-
 kernel/trace/ftrace.c                              |  5 +-
 kernel/trace/trace.c                               | 45 +++++++---------
 kernel/trace/trace_clock.c                         | 44 +++++++++++-----
 lib/kobject_uevent.c                               |  9 ++--
 lib/stackdepot.c                                   |  6 +--
 mm/hugetlb.c                                       | 11 +++-
 mm/khugepaged.c                                    | 18 +++----
 mm/ksm.c                                           |  1 +
 net/bluetooth/hci_event.c                          |  3 +-
 net/bluetooth/hci_request.c                        | 12 +++--
 net/bluetooth/l2cap_core.c                         |  4 ++
 net/hsr/hsr_framereg.c                             |  3 +-
 net/ipv6/ip6_gre.c                                 |  3 --
 net/ipv6/ip6_tunnel.c                              |  3 +-
 net/ipv6/ip6_vti.c                                 |  3 +-
 net/ipv6/sit.c                                     |  5 +-
 net/mac80211/main.c                                |  7 ++-
 net/mac80211/mlme.c                                |  5 ++
 net/netfilter/nf_conntrack_standalone.c            |  5 +-
 net/nfc/digital_dep.c                              |  2 +
 net/nfc/llcp_sock.c                                |  4 ++
 net/openvswitch/actions.c                          |  8 +--
 net/sctp/sm_make_chunk.c                           |  2 +-
 net/sctp/sm_statefuns.c                            |  3 +-
 net/sctp/socket.c                                  | 38 ++++++++------
 net/tipc/netlink_compat.c                          |  2 +-
 net/vmw_vsock/vmci_transport.c                     |  3 +-
 net/wireless/scan.c                                |  2 +
 samples/bpf/tracex1_kern.c                         |  4 +-
 samples/kfifo/bytestream-example.c                 |  8 ++-
 samples/kfifo/inttype-example.c                    |  8 ++-
 samples/kfifo/record-example.c                     |  8 ++-
 scripts/kconfig/nconf.c                            |  2 +-
 sound/core/init.c                                  |  2 -
 sound/isa/sb/emu8000.c                             |  4 +-
 sound/isa/sb/sb16_csp.c                            |  8 ++-
 sound/pci/hda/hda_generic.c                        | 16 ++++--
 sound/pci/hda/patch_realtek.c                      | 21 ++++----
 sound/pci/rme9652/hdsp.c                           |  3 +-
 sound/pci/rme9652/hdspm.c                          |  3 +-
 sound/pci/rme9652/rme9652.c                        |  3 +-
 sound/soc/codecs/rt286.c                           | 23 +++++----
 sound/usb/card.c                                   | 14 ++---
 sound/usb/quirks-table.h                           | 10 ++++
 sound/usb/quirks.c                                 | 16 ++++--
 sound/usb/usbaudio.h                               |  2 +
 tools/perf/util/symbol_fprintf.c                   |  2 +-
 tools/testing/selftests/lib.mk                     |  4 ++
 237 files changed, 1262 insertions(+), 647 deletions(-)



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 001/240] net: usb: ax88179_178a: initialize local variables before use
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
@ 2021-05-20  9:19 ` Greg Kroah-Hartman
  2021-05-20  9:19 ` [PATCH 4.9 002/240] iwlwifi: Fix softirq/hardirq disabling in iwl_pcie_enqueue_hcmd() Greg Kroah-Hartman
                   ` (243 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:19 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, syzbot+4993e4a0e237f1b53747,
	Phillip Potter, David S. Miller

From: Phillip Potter <phil@philpotter.co.uk>

commit bd78980be1a68d14524c51c4b4170782fada622b upstream.

Use memset to initialize local array in drivers/net/usb/ax88179_178a.c, and
also set a local u16 and u32 variable to 0. Fixes a KMSAN found uninit-value bug
reported by syzbot at:
https://syzkaller.appspot.com/bug?id=00371c73c72f72487c1d0bfe0cc9d00de339d5aa

Reported-by: syzbot+4993e4a0e237f1b53747@syzkaller.appspotmail.com
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/usb/ax88179_178a.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/net/usb/ax88179_178a.c
+++ b/drivers/net/usb/ax88179_178a.c
@@ -307,12 +307,12 @@ static int ax88179_read_cmd(struct usbne
 	int ret;
 
 	if (2 == size) {
-		u16 buf;
+		u16 buf = 0;
 		ret = __ax88179_read_cmd(dev, cmd, value, index, size, &buf, 0);
 		le16_to_cpus(&buf);
 		*((u16 *)data) = buf;
 	} else if (4 == size) {
-		u32 buf;
+		u32 buf = 0;
 		ret = __ax88179_read_cmd(dev, cmd, value, index, size, &buf, 0);
 		le32_to_cpus(&buf);
 		*((u32 *)data) = buf;



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 002/240] iwlwifi: Fix softirq/hardirq disabling in iwl_pcie_enqueue_hcmd()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
  2021-05-20  9:19 ` [PATCH 4.9 001/240] net: usb: ax88179_178a: initialize local variables before use Greg Kroah-Hartman
@ 2021-05-20  9:19 ` Greg Kroah-Hartman
  2021-05-20  9:19 ` [PATCH 4.9 003/240] ALSA: usb-audio: Add MIDI quirk for Vox ToneLab EX Greg Kroah-Hartman
                   ` (242 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:19 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Jiri Kosina, Luca Coelho, Kalle Valo,
	Jari Ruusu, Sedat Dilek

From: Jiri Kosina <jkosina@suse.cz>

commit 2800aadc18a64c96b051bcb7da8a7df7d505db3f upstream.

It's possible for iwl_pcie_enqueue_hcmd() to be called with hard IRQs
disabled (e.g. from LED core). We can't enable BHs in such a situation.

Turn the unconditional BH-enable/BH-disable code into
hardirq-disable/conditional-enable.

This fixes the warning below.

 WARNING: CPU: 1 PID: 1139 at kernel/softirq.c:178 __local_bh_enable_ip+0xa5/0xf0
 CPU: 1 PID: 1139 Comm: NetworkManager Not tainted 5.12.0-rc1-00004-gb4ded168af79 #7
 Hardware name: LENOVO 20K5S22R00/20K5S22R00, BIOS R0IET38W (1.16 ) 05/31/2017
 RIP: 0010:__local_bh_enable_ip+0xa5/0xf0
 Code: f7 69 e8 ee 23 14 00 fb 66 0f 1f 44 00 00 65 8b 05 f0 f4 f7 69 85 c0 74 3f 48 83 c4 08 5b c3 65 8b 05 9b fe f7 69 85 c0 75 8e <0f> 0b eb 8a 48 89 3c 24 e8 4e 20 14 00 48 8b 3c 24 eb 91 e8 13 4e
 RSP: 0018:ffffafd580b13298 EFLAGS: 00010046
 RAX: 0000000000000000 RBX: 0000000000000201 RCX: 0000000000000000
 RDX: 0000000000000003 RSI: 0000000000000201 RDI: ffffffffc1272389
 RBP: ffff96517ae4c018 R08: 0000000000000001 R09: 0000000000000000
 R10: ffffafd580b13178 R11: 0000000000000001 R12: ffff96517b060000
 R13: 0000000000000000 R14: ffffffff80000000 R15: 0000000000000001
 FS:  00007fc604ebefc0(0000) GS:ffff965267480000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 000055fb3fef13b2 CR3: 0000000109112004 CR4: 00000000003706e0
 Call Trace:
  ? _raw_spin_unlock_bh+0x1f/0x30
  iwl_pcie_enqueue_hcmd+0x5d9/0xa00 [iwlwifi]
  iwl_trans_txq_send_hcmd+0x6c/0x430 [iwlwifi]
  iwl_trans_send_cmd+0x88/0x170 [iwlwifi]
  ? lock_acquire+0x277/0x3d0
  iwl_mvm_send_cmd+0x32/0x80 [iwlmvm]
  iwl_mvm_led_set+0xc2/0xe0 [iwlmvm]
  ? led_trigger_event+0x46/0x70
  led_trigger_event+0x46/0x70
  ieee80211_do_open+0x5c5/0xa20 [mac80211]
  ieee80211_open+0x67/0x90 [mac80211]
  __dev_open+0xd4/0x150
  __dev_change_flags+0x19e/0x1f0
  dev_change_flags+0x23/0x60
  do_setlink+0x30d/0x1230
  ? lock_is_held_type+0xb4/0x120
  ? __nla_validate_parse.part.7+0x57/0xcb0
  ? __lock_acquire+0x2e1/0x1a50
  __rtnl_newlink+0x560/0x910
  ? __lock_acquire+0x2e1/0x1a50
  ? __lock_acquire+0x2e1/0x1a50
  ? lock_acquire+0x277/0x3d0
  ? sock_def_readable+0x5/0x290
  ? lock_is_held_type+0xb4/0x120
  ? find_held_lock+0x2d/0x90
  ? sock_def_readable+0xb3/0x290
  ? lock_release+0x166/0x2a0
  ? lock_is_held_type+0x90/0x120
  rtnl_newlink+0x47/0x70
  rtnetlink_rcv_msg+0x25c/0x470
  ? netlink_deliver_tap+0x97/0x3e0
  ? validate_linkmsg+0x350/0x350
  netlink_rcv_skb+0x50/0x100
  netlink_unicast+0x1b2/0x280
  netlink_sendmsg+0x336/0x450
  sock_sendmsg+0x5b/0x60
  ____sys_sendmsg+0x1ed/0x250
  ? copy_msghdr_from_user+0x5c/0x90
  ___sys_sendmsg+0x88/0xd0
  ? lock_is_held_type+0xb4/0x120
  ? find_held_lock+0x2d/0x90
  ? lock_release+0x166/0x2a0
  ? __fget_files+0xfe/0x1d0
  ? __sys_sendmsg+0x5e/0xa0
  __sys_sendmsg+0x5e/0xa0
  ? lockdep_hardirqs_on_prepare+0xd9/0x170
  do_syscall_64+0x33/0x80
  entry_SYSCALL_64_after_hwframe+0x44/0xae
 RIP: 0033:0x7fc605c9572d
 Code: 28 89 54 24 1c 48 89 74 24 10 89 7c 24 08 e8 da ee ff ff 8b 54 24 1c 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 33 44 89 c7 48 89 44 24 08 e8 2e ef ff ff 48
 RSP: 002b:00007fffc83789f0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e
 RAX: ffffffffffffffda RBX: 000055ef468570c0 RCX: 00007fc605c9572d
 RDX: 0000000000000000 RSI: 00007fffc8378a30 RDI: 000000000000000c
 RBP: 0000000000000010 R08: 0000000000000000 R09: 0000000000000000
 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
 R13: 00007fffc8378b80 R14: 00007fffc8378b7c R15: 0000000000000000
 irq event stamp: 170785
 hardirqs last  enabled at (170783): [<ffffffff9609a8c2>] __local_bh_enable_ip+0x82/0xf0
 hardirqs last disabled at (170784): [<ffffffff96a8613d>] _raw_read_lock_irqsave+0x8d/0x90
 softirqs last  enabled at (170782): [<ffffffffc1272389>] iwl_pcie_enqueue_hcmd+0x5d9/0xa00 [iwlwifi]
 softirqs last disabled at (170785): [<ffffffffc1271ec6>] iwl_pcie_enqueue_hcmd+0x116/0xa00 [iwlwifi]

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM/Clang v12.0.0-rc3
Acked-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/nycvar.YFH.7.76.2103021125430.12405@cbobk.fhfr.pm
Signed-off-by: Jari Ruusu <jariruusu@protonmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/wireless/intel/iwlwifi/pcie/tx.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/drivers/net/wireless/intel/iwlwifi/pcie/tx.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/tx.c
@@ -1510,6 +1510,7 @@ static int iwl_pcie_enqueue_hcmd(struct
 	u32 cmd_pos;
 	const u8 *cmddata[IWL_MAX_CMD_TBS_PER_TFD];
 	u16 cmdlen[IWL_MAX_CMD_TBS_PER_TFD];
+	unsigned long flags2;
 
 	if (WARN(!trans->wide_cmd_header &&
 		 group_id > IWL_ALWAYS_LONG_GROUP,
@@ -1593,10 +1594,10 @@ static int iwl_pcie_enqueue_hcmd(struct
 		goto free_dup_buf;
 	}
 
-	spin_lock_bh(&txq->lock);
+	spin_lock_irqsave(&txq->lock, flags2);
 
 	if (iwl_queue_space(txq) < ((cmd->flags & CMD_ASYNC) ? 2 : 1)) {
-		spin_unlock_bh(&txq->lock);
+		spin_unlock_irqrestore(&txq->lock, flags2);
 
 		IWL_ERR(trans, "No space in command queue\n");
 		iwl_op_mode_cmd_queue_full(trans->op_mode);
@@ -1757,7 +1758,7 @@ static int iwl_pcie_enqueue_hcmd(struct
 	spin_unlock_irqrestore(&trans_pcie->reg_lock, flags);
 
  out:
-	spin_unlock_bh(&txq->lock);
+	spin_unlock_irqrestore(&txq->lock, flags2);
  free_dup_buf:
 	if (idx < 0)
 		kfree(dup_buf);



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 003/240] ALSA: usb-audio: Add MIDI quirk for Vox ToneLab EX
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
  2021-05-20  9:19 ` [PATCH 4.9 001/240] net: usb: ax88179_178a: initialize local variables before use Greg Kroah-Hartman
  2021-05-20  9:19 ` [PATCH 4.9 002/240] iwlwifi: Fix softirq/hardirq disabling in iwl_pcie_enqueue_hcmd() Greg Kroah-Hartman
@ 2021-05-20  9:19 ` Greg Kroah-Hartman
  2021-05-20  9:19 ` [PATCH 4.9 004/240] USB: Add LPM quirk for Lenovo ThinkPad USB-C Dock Gen2 Ethernet Greg Kroah-Hartman
                   ` (241 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:19 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Takashi Iwai

From: Takashi Iwai <tiwai@suse.de>

commit 64f40f9be14106e7df0098c427cb60be645bddb7 upstream.

ToneLab EX guitar pedal device requires the same quirk like ToneLab ST
for supporting the MIDI.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=212593
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210407144549.1530-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 sound/usb/quirks-table.h |   10 ++++++++++
 1 file changed, 10 insertions(+)

--- a/sound/usb/quirks-table.h
+++ b/sound/usb/quirks-table.h
@@ -2479,6 +2479,16 @@ YAMAHA_DEVICE(0x7010, "UB99"),
 	}
 },
 
+{
+	USB_DEVICE_VENDOR_SPEC(0x0944, 0x0204),
+	.driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
+		.vendor_name = "KORG, Inc.",
+		/* .product_name = "ToneLab EX", */
+		.ifnum = 3,
+		.type = QUIRK_MIDI_STANDARD_INTERFACE,
+	}
+},
+
 /* AKAI devices */
 {
 	USB_DEVICE(0x09e8, 0x0062),



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 004/240] USB: Add LPM quirk for Lenovo ThinkPad USB-C Dock Gen2 Ethernet
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (2 preceding siblings ...)
  2021-05-20  9:19 ` [PATCH 4.9 003/240] ALSA: usb-audio: Add MIDI quirk for Vox ToneLab EX Greg Kroah-Hartman
@ 2021-05-20  9:19 ` Greg Kroah-Hartman
  2021-05-20  9:19 ` [PATCH 4.9 005/240] USB: Add reset-resume quirk for WD19s Realtek Hub Greg Kroah-Hartman
                   ` (240 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:19 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Kai-Heng Feng

From: Kai-Heng Feng <kai.heng.feng@canonical.com>

commit 8f23fe35ff1e5491b4d279323a8209a31f03ae65 upstream.

This is another branded 8153 device that doesn't work well with LPM
enabled:
[ 400.597506] r8152 5-1.1:1.0 enx482ae3a2a6f0: Tx status -71

So disable LPM to resolve the issue.

Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
BugLink: https://bugs.launchpad.net/bugs/1922651
Link: https://lore.kernel.org/r/20210412135455.791971-1-kai.heng.feng@canonical.com
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/usb/core/quirks.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -264,6 +264,9 @@ static const struct usb_device_id usb_qu
 	{ USB_DEVICE(0x1532, 0x0116), .driver_info =
 			USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL },
 
+	/* Lenovo ThinkPad USB-C Dock Gen2 Ethernet (RTL8153 GigE) */
+	{ USB_DEVICE(0x17ef, 0xa387), .driver_info = USB_QUIRK_NO_LPM },
+
 	/* BUILDWIN Photo Frame */
 	{ USB_DEVICE(0x1908, 0x1315), .driver_info =
 			USB_QUIRK_HONOR_BNUMINTERFACES },



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 005/240] USB: Add reset-resume quirk for WD19s Realtek Hub
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (3 preceding siblings ...)
  2021-05-20  9:19 ` [PATCH 4.9 004/240] USB: Add LPM quirk for Lenovo ThinkPad USB-C Dock Gen2 Ethernet Greg Kroah-Hartman
@ 2021-05-20  9:19 ` Greg Kroah-Hartman
  2021-05-20  9:19 ` [PATCH 4.9 006/240] platform/x86: thinkpad_acpi: Correct thermal sensor allocation Greg Kroah-Hartman
                   ` (239 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:19 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Alan Stern, Chris Chiu

From: Chris Chiu <chris.chiu@canonical.com>

commit ca91fd8c7643d93bfc18a6fec1a0d3972a46a18a upstream.

Realtek Hub (0bda:5487) in Dell Dock WD19 sometimes fails to work
after the system resumes from suspend with remote wakeup enabled
device connected:
[ 1947.640907] hub 5-2.3:1.0: hub_ext_port_status failed (err = -71)
[ 1947.641208] usb 5-2.3-port5: cannot disable (err = -71)
[ 1947.641401] hub 5-2.3:1.0: hub_ext_port_status failed (err = -71)
[ 1947.641450] usb 5-2.3-port4: cannot reset (err = -71)

Information of this hub:
T:  Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 10 Spd=480  MxCh= 5
D:  Ver= 2.10 Cls=09(hub  ) Sub=00 Prot=02 MxPS=64 #Cfgs=  1
P:  Vendor=0bda ProdID=5487 Rev= 1.47
S:  Manufacturer=Dell Inc.
S:  Product=Dell dock
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=  0mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=01 Driver=hub
E:  Ad=81(I) Atr=03(Int.) MxPS=   1 Ivl=256ms
I:* If#= 0 Alt= 1 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=02 Driver=hub
E:  Ad=81(I) Atr=03(Int.) MxPS=   1 Ivl=256ms

The failure results from the ETIMEDOUT by chance when turning on
the suspend feature for the specified port of the hub. The port
seems to be in an unknown state so the hub_activate during resume
fails the hub_port_status, then the hub will fail to work.

The quirky hub needs the reset-resume quirk to function correctly.

Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Chris Chiu <chris.chiu@canonical.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210420174651.6202-1-chris.chiu@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/usb/core/quirks.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -245,6 +245,7 @@ static const struct usb_device_id usb_qu
 
 	/* Realtek hub in Dell WD19 (Type-C) */
 	{ USB_DEVICE(0x0bda, 0x0487), .driver_info = USB_QUIRK_NO_LPM },
+	{ USB_DEVICE(0x0bda, 0x5487), .driver_info = USB_QUIRK_RESET_RESUME },
 
 	/* Generic RTL8153 based ethernet adapters */
 	{ USB_DEVICE(0x0bda, 0x8153), .driver_info = USB_QUIRK_NO_LPM },



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 006/240] platform/x86: thinkpad_acpi: Correct thermal sensor allocation
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (4 preceding siblings ...)
  2021-05-20  9:19 ` [PATCH 4.9 005/240] USB: Add reset-resume quirk for WD19s Realtek Hub Greg Kroah-Hartman
@ 2021-05-20  9:19 ` Greg Kroah-Hartman
  2021-05-20  9:19 ` [PATCH 4.9 007/240] s390/disassembler: increase ebpf disasm buffer size Greg Kroah-Hartman
                   ` (238 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:19 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Mark Pearson, Hans de Goede

From: Mark Pearson <markpearson@lenovo.com>

commit 6759e18e5cd8745a5dfc5726e4a3db5281ec1639 upstream.

On recent Thinkpad platforms it was reported that temp sensor 11 was
always incorrectly displaying 66C. It turns out the reason for this is
that this location in EC RAM is not a temperature sensor but is the
power supply ID (offset 0xC2).

Based on feedback from the Lenovo firmware team the EC RAM version can
be determined and for the current version (3) only the 0x78 to 0x7F
range is used for temp sensors. I don't have any details for earlier
versions so I have left the implementation unaltered there.

Note - in this block only 0x78 and 0x79 are officially designated (CPU &
GPU sensors). The use of the other locations in the block will vary from
platform to platform; but the existing logic to detect a sensor presence
holds.

Signed-off-by: Mark Pearson <markpearson@lenovo.com>
Link: https://lore.kernel.org/r/20210407212015.298222-1-markpearson@lenovo.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/platform/x86/thinkpad_acpi.c |   31 ++++++++++++++++++++++---------
 1 file changed, 22 insertions(+), 9 deletions(-)

--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -6044,6 +6044,7 @@ enum thermal_access_mode {
 enum { /* TPACPI_THERMAL_TPEC_* */
 	TP_EC_THERMAL_TMP0 = 0x78,	/* ACPI EC regs TMP 0..7 */
 	TP_EC_THERMAL_TMP8 = 0xC0,	/* ACPI EC regs TMP 8..15 */
+	TP_EC_FUNCREV      = 0xEF,      /* ACPI EC Functional revision */
 	TP_EC_THERMAL_TMP_NA = -128,	/* ACPI EC sensor not available */
 
 	TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */
@@ -6242,7 +6243,7 @@ static const struct attribute_group ther
 
 static int __init thermal_init(struct ibm_init_struct *iibm)
 {
-	u8 t, ta1, ta2;
+	u8 t, ta1, ta2, ver = 0;
 	int i;
 	int acpi_tmp7;
 	int res;
@@ -6257,7 +6258,14 @@ static int __init thermal_init(struct ib
 		 * 0x78-0x7F, 0xC0-0xC7.  Registers return 0x00 for
 		 * non-implemented, thermal sensors return 0x80 when
 		 * not available
+		 * The above rule is unfortunately flawed. This has been seen with
+		 * 0xC2 (power supply ID) causing thermal control problems.
+		 * The EC version can be determined by offset 0xEF and at least for
+		 * version 3 the Lenovo firmware team confirmed that registers 0xC0-0xC7
+		 * are not thermal registers.
 		 */
+		if (!acpi_ec_read(TP_EC_FUNCREV, &ver))
+			pr_warn("Thinkpad ACPI EC unable to access EC version\n");
 
 		ta1 = ta2 = 0;
 		for (i = 0; i < 8; i++) {
@@ -6267,11 +6275,13 @@ static int __init thermal_init(struct ib
 				ta1 = 0;
 				break;
 			}
-			if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
-				ta2 |= t;
-			} else {
-				ta1 = 0;
-				break;
+			if (ver < 3) {
+				if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
+					ta2 |= t;
+				} else {
+					ta1 = 0;
+					break;
+				}
 			}
 		}
 		if (ta1 == 0) {
@@ -6287,9 +6297,12 @@ static int __init thermal_init(struct ib
 				thermal_read_mode = TPACPI_THERMAL_NONE;
 			}
 		} else {
-			thermal_read_mode =
-			    (ta2 != 0) ?
-			    TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
+			if (ver >= 3)
+				thermal_read_mode = TPACPI_THERMAL_TPEC_8;
+			else
+				thermal_read_mode =
+					(ta2 != 0) ?
+					TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
 		}
 	} else if (acpi_tmp7) {
 		if (tpacpi_is_ibm() &&



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 007/240] s390/disassembler: increase ebpf disasm buffer size
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (5 preceding siblings ...)
  2021-05-20  9:19 ` [PATCH 4.9 006/240] platform/x86: thinkpad_acpi: Correct thermal sensor allocation Greg Kroah-Hartman
@ 2021-05-20  9:19 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 008/240] ACPI: custom_method: fix potential use-after-free issue Greg Kroah-Hartman
                   ` (237 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:19 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Heiko Carstens, Vasily Gorbik

From: Vasily Gorbik <gor@linux.ibm.com>

commit 6f3353c2d2b3eb4de52e9704cb962712033db181 upstream.

Current ebpf disassembly buffer size of 64 is too small. E.g. this line
takes 65 bytes:
01fffff8005822e: ec8100ed8065\tclgrj\t%r8,%r1,8,001fffff80058408\n\0

Double the buffer size like it is done for the kernel disassembly buffer.

Fixes the following KASAN finding:

UG: KASAN: stack-out-of-bounds in print_fn_code+0x34c/0x380
Write of size 1 at addr 001fff800ad5f970 by task test_progs/853

CPU: 53 PID: 853 Comm: test_progs Not tainted
5.12.0-rc7-23786-g23457d86b1f0-dirty #19
Hardware name: IBM 3906 M04 704 (LPAR)
Call Trace:
 [<0000000cd8e0538a>] show_stack+0x17a/0x1668
 [<0000000cd8e2a5d8>] dump_stack+0x140/0x1b8
 [<0000000cd8e16e74>] print_address_description.constprop.0+0x54/0x260
 [<0000000cd75a8698>] kasan_report+0xc8/0x130
 [<0000000cd6e26da4>] print_fn_code+0x34c/0x380
 [<0000000cd6ea0f4e>] bpf_int_jit_compile+0xe3e/0xe58
 [<0000000cd72c4c88>] bpf_prog_select_runtime+0x5b8/0x9c0
 [<0000000cd72d1bf8>] bpf_prog_load+0xa78/0x19c0
 [<0000000cd72d7ad6>] __do_sys_bpf.part.0+0x18e/0x768
 [<0000000cd6e0f392>] do_syscall+0x12a/0x220
 [<0000000cd8e333f8>] __do_syscall+0x98/0xc8
 [<0000000cd8e54834>] system_call+0x6c/0x94
1 lock held by test_progs/853:
 #0: 0000000cd9bf7460 (report_lock){....}-{2:2}, at:
     kasan_report+0x96/0x130

addr 001fff800ad5f970 is located in stack of task test_progs/853 at
offset 96 in frame:
 print_fn_code+0x0/0x380
this frame has 1 object:
 [32, 96) 'buffer'

Memory state around the buggy address:
 001fff800ad5f800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 001fff800ad5f880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>001fff800ad5f900: 00 00 f1 f1 f1 f1 00 00 00 00 00 00 00 00 f3 f3
                                                             ^
 001fff800ad5f980: f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 001fff800ad5fa00: 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 00 00

Cc: <stable@vger.kernel.org>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/s390/kernel/dis.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/s390/kernel/dis.c
+++ b/arch/s390/kernel/dis.c
@@ -2026,7 +2026,7 @@ void show_code(struct pt_regs *regs)
 
 void print_fn_code(unsigned char *code, unsigned long len)
 {
-	char buffer[64], *ptr;
+	char buffer[128], *ptr;
 	int opsize, i;
 
 	while (len) {



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 008/240] ACPI: custom_method: fix potential use-after-free issue
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (6 preceding siblings ...)
  2021-05-20  9:19 ` [PATCH 4.9 007/240] s390/disassembler: increase ebpf disasm buffer size Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 009/240] ACPI: custom_method: fix a possible memory leak Greg Kroah-Hartman
                   ` (236 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Mark Langsdorf, Rafael J. Wysocki

From: Mark Langsdorf <mlangsdo@redhat.com>

commit e483bb9a991bdae29a0caa4b3a6d002c968f94aa upstream.

In cm_write(), buf is always freed when reaching the end of the
function.  If the requested count is less than table.length, the
allocated buffer will be freed but subsequent calls to cm_write() will
still try to access it.

Remove the unconditional kfree(buf) at the end of the function and
set the buf to NULL in the -EINVAL error path to match the rest of
function.

Fixes: 03d1571d9513 ("ACPI: custom_method: fix memory leaks")
Signed-off-by: Mark Langsdorf <mlangsdo@redhat.com>
Cc: 5.4+ <stable@vger.kernel.org> # 5.4+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/acpi/custom_method.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/acpi/custom_method.c
+++ b/drivers/acpi/custom_method.c
@@ -50,6 +50,7 @@ static ssize_t cm_write(struct file *fil
 	    (*ppos + count < count) ||
 	    (count > uncopied_bytes)) {
 		kfree(buf);
+		buf = NULL;
 		return -EINVAL;
 	}
 
@@ -71,7 +72,6 @@ static ssize_t cm_write(struct file *fil
 		add_taint(TAINT_OVERRIDDEN_ACPI_TABLE, LOCKDEP_NOW_UNRELIABLE);
 	}
 
-	kfree(buf);
 	return count;
 }
 



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 009/240] ACPI: custom_method: fix a possible memory leak
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (7 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 008/240] ACPI: custom_method: fix potential use-after-free issue Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 010/240] arm64: dts: mt8173: fix property typo of phys in dsi node Greg Kroah-Hartman
                   ` (235 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Mark Langsdorf, Rafael J. Wysocki

From: Mark Langsdorf <mlangsdo@redhat.com>

commit 1cfd8956437f842836e8a066b40d1ec2fc01f13e upstream.

In cm_write(), if the 'buf' is allocated memory but not fully consumed,
it is possible to reallocate the buffer without freeing it by passing
'*ppos' as 0 on a subsequent call.

Add an explicit kfree() before kzalloc() to prevent the possible memory
leak.

Fixes: 526b4af47f44 ("ACPI: Split out custom_method functionality into an own driver")
Signed-off-by: Mark Langsdorf <mlangsdo@redhat.com>
Cc: 5.4+ <stable@vger.kernel.org> # 5.4+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/acpi/custom_method.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/acpi/custom_method.c
+++ b/drivers/acpi/custom_method.c
@@ -37,6 +37,8 @@ static ssize_t cm_write(struct file *fil
 				   sizeof(struct acpi_table_header)))
 			return -EFAULT;
 		uncopied_bytes = max_size = table.length;
+		/* make sure the buf is not allocated */
+		kfree(buf);
 		buf = kzalloc(max_size, GFP_KERNEL);
 		if (!buf)
 			return -ENOMEM;



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 010/240] arm64: dts: mt8173: fix property typo of phys in dsi node
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (8 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 009/240] ACPI: custom_method: fix a possible memory leak Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 011/240] ecryptfs: fix kernel panic with null dev_name Greg Kroah-Hartman
                   ` (234 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Chunfeng Yun, Chun-Kuang Hu,
	Matthias Brugger

From: Chunfeng Yun <chunfeng.yun@mediatek.com>

commit e4e5d030bd779fb8321d3b8bd65406fbe0827037 upstream.

Use 'phys' instead of 'phy'.

Fixes: 81ad4dbaf7af ("arm64: dts: mt8173: Add display subsystem related nodes")
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210316092232.9806-5-chunfeng.yun@mediatek.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm64/boot/dts/mediatek/mt8173.dtsi |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm64/boot/dts/mediatek/mt8173.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
@@ -914,7 +914,7 @@
 				 <&mmsys CLK_MM_DSI1_DIGITAL>,
 				 <&mipi_tx1>;
 			clock-names = "engine", "digital", "hs";
-			phy = <&mipi_tx1>;
+			phys = <&mipi_tx1>;
 			phy-names = "dphy";
 			status = "disabled";
 		};



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 011/240] ecryptfs: fix kernel panic with null dev_name
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (9 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 010/240] arm64: dts: mt8173: fix property typo of phys in dsi node Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 012/240] mmc: core: Do a power cycle when the CMD11 fails Greg Kroah-Hartman
                   ` (233 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Jeffrey Mitchell, Tyler Hicks

From: Jeffrey Mitchell <jeffrey.mitchell@starlab.io>

commit 9046625511ad8dfbc8c6c2de16b3532c43d68d48 upstream.

When mounting eCryptfs, a null "dev_name" argument to ecryptfs_mount()
causes a kernel panic if the parsed options are valid. The easiest way to
reproduce this is to call mount() from userspace with an existing
eCryptfs mount's options and a "source" argument of 0.

Error out if "dev_name" is null in ecryptfs_mount()

Fixes: 237fead61998 ("[PATCH] ecryptfs: fs/Makefile and fs/Kconfig")
Cc: stable@vger.kernel.org
Signed-off-by: Jeffrey Mitchell <jeffrey.mitchell@starlab.io>
Signed-off-by: Tyler Hicks <code@tyhicks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/ecryptfs/main.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -506,6 +506,12 @@ static struct dentry *ecryptfs_mount(str
 		goto out;
 	}
 
+	if (!dev_name) {
+		rc = -EINVAL;
+		err = "Device name cannot be null";
+		goto out;
+	}
+
 	rc = ecryptfs_parse_options(sbi, raw_data, &check_ruid);
 	if (rc) {
 		err = "Error parsing options";



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 012/240] mmc: core: Do a power cycle when the CMD11 fails
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (10 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 011/240] ecryptfs: fix kernel panic with null dev_name Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 013/240] mmc: core: Set read only for SD cards with permanent write protect bit Greg Kroah-Hartman
                   ` (232 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, DooHyun Hwang, Ulf Hansson

From: DooHyun Hwang <dh0421.hwang@samsung.com>

commit 147186f531ae49c18b7a9091a2c40e83b3d95649 upstream.

A CMD11 is sent to the SD/SDIO card to start the voltage switch procedure
into 1.8V I/O. According to the SD spec a power cycle is needed of the
card, if it turns out that the CMD11 fails. Let's fix this, to allow a
retry of the initialization without the voltage switch, to succeed.

Note that, whether it makes sense to also retry with the voltage switch
after the power cycle is a bit more difficult to know. At this point, we
treat it like the CMD11 isn't supported and therefore we skip it when
retrying.

Signed-off-by: DooHyun Hwang <dh0421.hwang@samsung.com>
Link: https://lore.kernel.org/r/20210210045936.7809-1-dh0421.hwang@samsung.com
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/mmc/core/core.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -1691,7 +1691,7 @@ int mmc_set_signal_voltage(struct mmc_ho
 
 	err = mmc_wait_for_cmd(host, &cmd, 0);
 	if (err)
-		return err;
+		goto power_cycle;
 
 	if (!mmc_host_is_spi(host) && (cmd.resp[0] & R1_ERROR))
 		return -EIO;



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 013/240] mmc: core: Set read only for SD cards with permanent write protect bit
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (11 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 012/240] mmc: core: Do a power cycle when the CMD11 fails Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 014/240] btrfs: fix metadata extent leak after failure to create subvolume Greg Kroah-Hartman
                   ` (231 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Seunghui Lee, Ulf Hansson

From: Seunghui Lee <sh043.lee@samsung.com>

commit 917a5336f2c27928be270226ab374ed0cbf3805d upstream.

Some of SD cards sets permanent write protection bit in their CSD register,
due to lifespan or internal problem. To avoid unnecessary I/O write
operations, let's parse the bits in the CSD during initialization and mark
the card as read only for this case.

Signed-off-by: Seunghui Lee <sh043.lee@samsung.com>
Link: https://lore.kernel.org/r/20210222083156.19158-1-sh043.lee@samsung.com
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/mmc/core/sd.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -136,6 +136,9 @@ static int mmc_decode_csd(struct mmc_car
 			csd->erase_size = UNSTUFF_BITS(resp, 39, 7) + 1;
 			csd->erase_size <<= csd->write_blkbits - 9;
 		}
+
+		if (UNSTUFF_BITS(resp, 13, 1))
+			mmc_card_set_readonly(card);
 		break;
 	case 1:
 		/*
@@ -170,6 +173,9 @@ static int mmc_decode_csd(struct mmc_car
 		csd->write_blkbits = 9;
 		csd->write_partial = 0;
 		csd->erase_size = 1;
+
+		if (UNSTUFF_BITS(resp, 13, 1))
+			mmc_card_set_readonly(card);
 		break;
 	default:
 		pr_err("%s: unrecognised CSD structure version %d\n",



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 014/240] btrfs: fix metadata extent leak after failure to create subvolume
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (12 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 013/240] mmc: core: Set read only for SD cards with permanent write protect bit Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 015/240] fbdev: zero-fill colormap in fbcmap.c Greg Kroah-Hartman
                   ` (230 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Filipe Manana, David Sterba

From: Filipe Manana <fdmanana@suse.com>

commit 67addf29004c5be9fa0383c82a364bb59afc7f84 upstream.

When creating a subvolume we allocate an extent buffer for its root node
after starting a transaction. We setup a root item for the subvolume that
points to that extent buffer and then attempt to insert the root item into
the root tree - however if that fails, due to ENOMEM for example, we do
not free the extent buffer previously allocated and we do not abort the
transaction (as at that point we did nothing that can not be undone).

This means that we effectively do not return the metadata extent back to
the free space cache/tree and we leave a delayed reference for it which
causes a metadata extent item to be added to the extent tree, in the next
transaction commit, without having backreferences. When this happens
'btrfs check' reports the following:

  $ btrfs check /dev/sdi
  Opening filesystem to check...
  Checking filesystem on /dev/sdi
  UUID: dce2cb9d-025f-4b05-a4bf-cee0ad3785eb
  [1/7] checking root items
  [2/7] checking extents
  ref mismatch on [30425088 16384] extent item 1, found 0
  backref 30425088 root 256 not referenced back 0x564a91c23d70
  incorrect global backref count on 30425088 found 1 wanted 0
  backpointer mismatch on [30425088 16384]
  owner ref check failed [30425088 16384]
  ERROR: errors found in extent allocation tree or chunk allocation
  [3/7] checking free space cache
  [4/7] checking fs roots
  [5/7] checking only csums items (without verifying data)
  [6/7] checking root refs
  [7/7] checking quota groups skipped (not enabled on this FS)
  found 212992 bytes used, error(s) found
  total csum bytes: 0
  total tree bytes: 131072
  total fs tree bytes: 32768
  total extent tree bytes: 16384
  btree space waste bytes: 124669
  file data blocks allocated: 65536
   referenced 65536

So fix this by freeing the metadata extent if btrfs_insert_root() returns
an error.

CC: stable@vger.kernel.org # 4.4+
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/btrfs/ioctl.c |   18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -557,8 +557,6 @@ static noinline int create_subvol(struct
 	btrfs_set_root_otransid(root_item, trans->transid);
 
 	btrfs_tree_unlock(leaf);
-	free_extent_buffer(leaf);
-	leaf = NULL;
 
 	btrfs_set_root_dirid(root_item, new_dirid);
 
@@ -567,8 +565,22 @@ static noinline int create_subvol(struct
 	key.type = BTRFS_ROOT_ITEM_KEY;
 	ret = btrfs_insert_root(trans, root->fs_info->tree_root, &key,
 				root_item);
-	if (ret)
+	if (ret) {
+		/*
+		 * Since we don't abort the transaction in this case, free the
+		 * tree block so that we don't leak space and leave the
+		 * filesystem in an inconsistent state (an extent item in the
+		 * extent tree without backreferences). Also no need to have
+		 * the tree block locked since it is not in any tree at this
+		 * point, so no other task can find it and use it.
+		 */
+		btrfs_free_tree_block(trans, root, leaf, 0, 1);
+		free_extent_buffer(leaf);
 		goto fail;
+	}
+
+	free_extent_buffer(leaf);
+	leaf = NULL;
 
 	key.offset = (u64)-1;
 	new_root = btrfs_read_fs_root_no_name(root->fs_info, &key);



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 015/240] fbdev: zero-fill colormap in fbcmap.c
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (13 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 014/240] btrfs: fix metadata extent leak after failure to create subvolume Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 016/240] staging: wimax/i2400m: fix byte-order issue Greg Kroah-Hartman
                   ` (229 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, syzbot+47fa9c9c648b765305b9,
	Geert Uytterhoeven, Phillip Potter

From: Phillip Potter <phil@philpotter.co.uk>

commit 19ab233989d0f7ab1de19a036e247afa4a0a1e9c upstream.

Use kzalloc() rather than kmalloc() for the dynamically allocated parts
of the colormap in fb_alloc_cmap_gfp, to prevent a leak of random kernel
data to userspace under certain circumstances.

Fixes a KMSAN-found infoleak bug reported by syzbot at:
https://syzkaller.appspot.com/bug?id=741578659feabd108ad9e06696f0c1f2e69c4b6e

Reported-by: syzbot+47fa9c9c648b765305b9@syzkaller.appspotmail.com
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210331220719.1499743-1-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/video/fbdev/core/fbcmap.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/drivers/video/fbdev/core/fbcmap.c
+++ b/drivers/video/fbdev/core/fbcmap.c
@@ -101,17 +101,17 @@ int fb_alloc_cmap_gfp(struct fb_cmap *cm
 		if (!len)
 			return 0;
 
-		cmap->red = kmalloc(size, flags);
+		cmap->red = kzalloc(size, flags);
 		if (!cmap->red)
 			goto fail;
-		cmap->green = kmalloc(size, flags);
+		cmap->green = kzalloc(size, flags);
 		if (!cmap->green)
 			goto fail;
-		cmap->blue = kmalloc(size, flags);
+		cmap->blue = kzalloc(size, flags);
 		if (!cmap->blue)
 			goto fail;
 		if (transp) {
-			cmap->transp = kmalloc(size, flags);
+			cmap->transp = kzalloc(size, flags);
 			if (!cmap->transp)
 				goto fail;
 		} else {



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 016/240] staging: wimax/i2400m: fix byte-order issue
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (14 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 015/240] fbdev: zero-fill colormap in fbcmap.c Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 017/240] usb: gadget: uvc: add bInterval checking for HS mode Greg Kroah-Hartman
                   ` (228 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, karthik alapati, Sasha Levin

From: karthik alapati <mail@karthek.com>

[ Upstream commit 0c37baae130df39b19979bba88bde2ee70a33355 ]

fix sparse byte-order warnings by converting host byte-order
type to __le16 byte-order types before assigning to hdr.length

Signed-off-by: karthik alapati <mail@karthek.com>
Link: https://lore.kernel.org/r/0ae5c5c4c646506d8be871e7be5705542671a1d5.1613921277.git.mail@karthek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wimax/i2400m/op-rfkill.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wimax/i2400m/op-rfkill.c b/drivers/net/wimax/i2400m/op-rfkill.c
index dc6fe93ce71f..e8473047b2d1 100644
--- a/drivers/net/wimax/i2400m/op-rfkill.c
+++ b/drivers/net/wimax/i2400m/op-rfkill.c
@@ -101,7 +101,7 @@ int i2400m_op_rfkill_sw_toggle(struct wimax_dev *wimax_dev,
 	if (cmd == NULL)
 		goto error_alloc;
 	cmd->hdr.type = cpu_to_le16(I2400M_MT_CMD_RF_CONTROL);
-	cmd->hdr.length = sizeof(cmd->sw_rf);
+	cmd->hdr.length = cpu_to_le16(sizeof(cmd->sw_rf));
 	cmd->hdr.version = cpu_to_le16(I2400M_L3L4_VERSION);
 	cmd->sw_rf.hdr.type = cpu_to_le16(I2400M_TLV_RF_OPERATION);
 	cmd->sw_rf.hdr.length = cpu_to_le16(sizeof(cmd->sw_rf.status));
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 017/240] usb: gadget: uvc: add bInterval checking for HS mode
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (15 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 016/240] staging: wimax/i2400m: fix byte-order issue Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 018/240] usb: dwc3: gadget: Ignore EP queue requests during bus reset Greg Kroah-Hartman
                   ` (227 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Peter Chen, Laurent Pinchart,
	Pawel Laszczak, Sasha Levin

From: Pawel Laszczak <pawell@cadence.com>

[ Upstream commit 26adde04acdff14a1f28d4a5dce46a8513a3038b ]

Patch adds extra checking for bInterval passed by configfs.
The 5.6.4 chapter of USB Specification (rev. 2.0) say:
"A high-bandwidth endpoint must specify a period of 1x125 µs
(i.e., a bInterval value of 1)."

The issue was observed during testing UVC class on CV.
I treat this change as improvement because we can control
bInterval by configfs.

Reviewed-by: Peter Chen <peter.chen@kernel.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Pawel Laszczak <pawell@cadence.com>
Link: https://lore.kernel.org/r/20210308125338.4824-1-pawell@gli-login.cadence.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/gadget/function/f_uvc.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/function/f_uvc.c b/drivers/usb/gadget/function/f_uvc.c
index f8a1881609a2..89da34ef7b3f 100644
--- a/drivers/usb/gadget/function/f_uvc.c
+++ b/drivers/usb/gadget/function/f_uvc.c
@@ -625,7 +625,12 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f)
 
 	uvc_hs_streaming_ep.wMaxPacketSize =
 		cpu_to_le16(max_packet_size | ((max_packet_mult - 1) << 11));
-	uvc_hs_streaming_ep.bInterval = opts->streaming_interval;
+
+	/* A high-bandwidth endpoint must specify a bInterval value of 1 */
+	if (max_packet_mult > 1)
+		uvc_hs_streaming_ep.bInterval = 1;
+	else
+		uvc_hs_streaming_ep.bInterval = opts->streaming_interval;
 
 	uvc_ss_streaming_ep.wMaxPacketSize = cpu_to_le16(max_packet_size);
 	uvc_ss_streaming_ep.bInterval = opts->streaming_interval;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 018/240] usb: dwc3: gadget: Ignore EP queue requests during bus reset
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (16 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 017/240] usb: gadget: uvc: add bInterval checking for HS mode Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 019/240] usb: xhci: Fix port minor revision Greg Kroah-Hartman
                   ` (226 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Wesley Cheng, Sasha Levin

From: Wesley Cheng <wcheng@codeaurora.org>

[ Upstream commit 71ca43f30df9c642970f9dc9b2d6f463f4967e7b ]

The current dwc3_gadget_reset_interrupt() will stop any active
transfers, but only addresses blocking of EP queuing for while we are
coming from a disconnected scenario, i.e. after receiving the disconnect
event.  If the host decides to issue a bus reset on the device, the
connected parameter will still be set to true, allowing for EP queuing
to continue while we are disabling the functions.  To avoid this, set the
connected flag to false until the stop active transfers is complete.

Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
Link: https://lore.kernel.org/r/1616146285-19149-3-git-send-email-wcheng@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/dwc3/gadget.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index e0fb7b3723c5..cca51553e0fb 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2409,6 +2409,15 @@ static void dwc3_gadget_reset_interrupt(struct dwc3 *dwc)
 
 	dwc->connected = true;
 
+	/*
+	 * Ideally, dwc3_reset_gadget() would trigger the function
+	 * drivers to stop any active transfers through ep disable.
+	 * However, for functions which defer ep disable, such as mass
+	 * storage, we will need to rely on the call to stop active
+	 * transfers here, and avoid allowing of request queuing.
+	 */
+	dwc->connected = false;
+
 	/*
 	 * WORKAROUND: DWC3 revisions <1.88a have an issue which
 	 * would cause a missing Disconnect Event if there's a
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 019/240] usb: xhci: Fix port minor revision
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (17 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 018/240] usb: dwc3: gadget: Ignore EP queue requests during bus reset Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 020/240] PCI: PM: Do not read power state in pci_enable_device_flags() Greg Kroah-Hartman
                   ` (225 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Mathias Nyman, Thinh Nguyen, Sasha Levin

From: Thinh Nguyen <Thinh.Nguyen@synopsys.com>

[ Upstream commit 64364bc912c01b33bba6c22e3ccb849bfca96398 ]

Some hosts incorrectly use sub-minor version for minor version (i.e.
0x02 instead of 0x20 for bcdUSB 0x320 and 0x01 for bcdUSB 0x310).
Currently the xHCI driver works around this by just checking for minor
revision > 0x01 for USB 3.1 everywhere. With the addition of USB 3.2,
checking this gets a bit cumbersome. Since there is no USB release with
bcdUSB 0x301 to 0x309, we can assume that sub-minor version 01 to 09 is
incorrect. Let's try to fix this and use the minor revision that matches
with the USB/xHCI spec to help with the version checking within the
driver.

Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/ed330e95a19dc367819c5b4d78bf7a541c35aa0a.1615432770.git.Thinh.Nguyen@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/host/xhci-mem.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index 3cca60b845a8..9b30936904da 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -2159,6 +2159,15 @@ static void xhci_add_in_port(struct xhci_hcd *xhci, unsigned int num_ports,
 
 	if (major_revision == 0x03) {
 		rhub = &xhci->usb3_rhub;
+		/*
+		 * Some hosts incorrectly use sub-minor version for minor
+		 * version (i.e. 0x02 instead of 0x20 for bcdUSB 0x320 and 0x01
+		 * for bcdUSB 0x310). Since there is no USB release with sub
+		 * minor version 0x301 to 0x309, we can assume that they are
+		 * incorrect and fix it here.
+		 */
+		if (minor_revision > 0x00 && minor_revision < 0x10)
+			minor_revision <<= 4;
 	} else if (major_revision <= 0x02) {
 		rhub = &xhci->usb2_rhub;
 	} else {
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 020/240] PCI: PM: Do not read power state in pci_enable_device_flags()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (18 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 019/240] usb: xhci: Fix port minor revision Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 021/240] x86/build: Propagate $(CLANG_FLAGS) to $(REALMODE_FLAGS) Greg Kroah-Hartman
                   ` (224 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Maximilian Luz, Rafael J. Wysocki,
	Mika Westerberg, Sasha Levin

From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

[ Upstream commit 4514d991d99211f225d83b7e640285f29f0755d0 ]

It should not be necessary to update the current_state field of
struct pci_dev in pci_enable_device_flags() before calling
do_pci_enable_device() for the device, because none of the
code between that point and the pci_set_power_state() call in
do_pci_enable_device() invoked later depends on it.

Moreover, doing that is actively harmful in some cases.  For example,
if the given PCI device depends on an ACPI power resource whose _STA
method initially returns 0 ("off"), but the config space of the PCI
device is accessible and the power state retrieved from the
PCI_PM_CTRL register is D0, the current_state field in the struct
pci_dev representing that device will get out of sync with the
power.state of its ACPI companion object and that will lead to
power management issues going forward.

To avoid such issues it is better to leave the current_state value
as is until it is changed to PCI_D0 by do_pci_enable_device() as
appropriate.  However, the power state of the device is not changed
to PCI_D0 if it is already enabled when pci_enable_device_flags()
gets called for it, so update its current_state in that case, but
use pci_update_current_state() covering platform PM too for that.

Link: https://lore.kernel.org/lkml/20210314000439.3138941-1-luzmaximilian@gmail.com/
Reported-by: Maximilian Luz <luzmaximilian@gmail.com>
Tested-by: Maximilian Luz <luzmaximilian@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pci/pci.c | 16 +++-------------
 1 file changed, 3 insertions(+), 13 deletions(-)

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index e09653c73ab4..acd89fa9820c 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1378,20 +1378,10 @@ static int pci_enable_device_flags(struct pci_dev *dev, unsigned long flags)
 	int err;
 	int i, bars = 0;
 
-	/*
-	 * Power state could be unknown at this point, either due to a fresh
-	 * boot or a device removal call.  So get the current power state
-	 * so that things like MSI message writing will behave as expected
-	 * (e.g. if the device really is in D0 at enable time).
-	 */
-	if (dev->pm_cap) {
-		u16 pmcsr;
-		pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
-		dev->current_state = (pmcsr & PCI_PM_CTRL_STATE_MASK);
-	}
-
-	if (atomic_inc_return(&dev->enable_cnt) > 1)
+	if (atomic_inc_return(&dev->enable_cnt) > 1) {
+		pci_update_current_state(dev, dev->current_state);
 		return 0;		/* already enabled */
+	}
 
 	bridge = pci_upstream_bridge(dev);
 	if (bridge)
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 021/240] x86/build: Propagate $(CLANG_FLAGS) to $(REALMODE_FLAGS)
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (19 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 020/240] PCI: PM: Do not read power state in pci_enable_device_flags() Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 022/240] spi: dln2: Fix reference leak to master Greg Kroah-Hartman
                   ` (223 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, John Millikin, Nathan Chancellor,
	Borislav Petkov, Ard Biesheuvel, Sedat Dilek, Sasha Levin

From: John Millikin <john@john-millikin.com>

[ Upstream commit 8abe7fc26ad8f28bfdf78adbed56acd1fa93f82d ]

When cross-compiling with Clang, the `$(CLANG_FLAGS)' variable
contains additional flags needed to build C and assembly sources
for the target platform. Normally this variable is automatically
included in `$(KBUILD_CFLAGS)' via the top-level Makefile.

The x86 real-mode makefile builds `$(REALMODE_CFLAGS)' from a
plain assignment and therefore drops the Clang flags. This causes
Clang to not recognize x86-specific assembler directives:

  arch/x86/realmode/rm/header.S:36:1: error: unknown directive
  .type real_mode_header STT_OBJECT ; .size real_mode_header, .-real_mode_header
  ^

Explicit propagation of `$(CLANG_FLAGS)' to `$(REALMODE_CFLAGS)',
which is inherited by real-mode make rules, fixes cross-compilation
with Clang for x86 targets.

Relevant flags:

* `--target' sets the target architecture when cross-compiling. This
  flag must be set for both compilation and assembly (`KBUILD_AFLAGS')
  to support architecture-specific assembler directives.

* `-no-integrated-as' tells clang to assemble with GNU Assembler
  instead of its built-in LLVM assembler. This flag is set by default
  unless `LLVM_IAS=1' is set, because the LLVM assembler can't yet
  parse certain GNU extensions.

Signed-off-by: John Millikin <john@john-millikin.com>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Link: https://lkml.kernel.org/r/20210326000435.4785-2-nathan@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/x86/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 9ebbd4892557..0bc35e3e6c5c 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -40,6 +40,7 @@ REALMODE_CFLAGS += $(call __cc-option, $(CC), $(REALMODE_CFLAGS), -ffreestanding
 REALMODE_CFLAGS += $(call __cc-option, $(CC), $(REALMODE_CFLAGS), -fno-stack-protector)
 REALMODE_CFLAGS += $(call __cc-option, $(CC), $(REALMODE_CFLAGS), -Wno-address-of-packed-member)
 REALMODE_CFLAGS += $(call __cc-option, $(CC), $(REALMODE_CFLAGS), $(cc_stack_align4))
+REALMODE_CFLAGS += $(CLANG_FLAGS)
 export REALMODE_CFLAGS
 
 # BITS is used as extension for files which are available in a 32 bit
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 022/240] spi: dln2: Fix reference leak to master
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (20 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 021/240] x86/build: Propagate $(CLANG_FLAGS) to $(REALMODE_FLAGS) Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 023/240] spi: omap-100k: " Greg Kroah-Hartman
                   ` (222 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Hulk Robot, Wei Yongjun, Mark Brown,
	Sasha Levin

From: Wei Yongjun <weiyongjun1@huawei.com>

[ Upstream commit 9b844b087124c1538d05f40fda8a4fec75af55be ]

Call spi_master_get() holds the reference count to master device, thus
we need an additional spi_master_put() call to reduce the reference
count, otherwise we will leak a reference to master.

This commit fix it by removing the unnecessary spi_master_get().

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20210409082955.2907950-1-weiyongjun1@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/spi/spi-dln2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi-dln2.c b/drivers/spi/spi-dln2.c
index b62a99caacc0..a41adea48618 100644
--- a/drivers/spi/spi-dln2.c
+++ b/drivers/spi/spi-dln2.c
@@ -783,7 +783,7 @@ exit_free_master:
 
 static int dln2_spi_remove(struct platform_device *pdev)
 {
-	struct spi_master *master = spi_master_get(platform_get_drvdata(pdev));
+	struct spi_master *master = platform_get_drvdata(pdev);
 	struct dln2_spi *dln2 = spi_master_get_devdata(master);
 
 	pm_runtime_disable(&pdev->dev);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 023/240] spi: omap-100k: Fix reference leak to master
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (21 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 022/240] spi: dln2: Fix reference leak to master Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 024/240] intel_th: Consistency and off-by-one fix Greg Kroah-Hartman
                   ` (221 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Hulk Robot, Wei Yongjun, Mark Brown,
	Sasha Levin

From: Wei Yongjun <weiyongjun1@huawei.com>

[ Upstream commit a23faea76d4cf5f75decb574491e66f9ecd707e7 ]

Call spi_master_get() holds the reference count to master device, thus
we need an additional spi_master_put() call to reduce the reference
count, otherwise we will leak a reference to master.

This commit fix it by removing the unnecessary spi_master_get().

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20210409082954.2906933-1-weiyongjun1@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/spi/spi-omap-100k.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/spi/spi-omap-100k.c b/drivers/spi/spi-omap-100k.c
index 76a8425be227..1eccdc4a4581 100644
--- a/drivers/spi/spi-omap-100k.c
+++ b/drivers/spi/spi-omap-100k.c
@@ -435,7 +435,7 @@ err:
 
 static int omap1_spi100k_remove(struct platform_device *pdev)
 {
-	struct spi_master *master = spi_master_get(platform_get_drvdata(pdev));
+	struct spi_master *master = platform_get_drvdata(pdev);
 	struct omap1_spi100k *spi100k = spi_master_get_devdata(master);
 
 	pm_runtime_disable(&pdev->dev);
@@ -449,7 +449,7 @@ static int omap1_spi100k_remove(struct platform_device *pdev)
 #ifdef CONFIG_PM
 static int omap1_spi100k_runtime_suspend(struct device *dev)
 {
-	struct spi_master *master = spi_master_get(dev_get_drvdata(dev));
+	struct spi_master *master = dev_get_drvdata(dev);
 	struct omap1_spi100k *spi100k = spi_master_get_devdata(master);
 
 	clk_disable_unprepare(spi100k->ick);
@@ -460,7 +460,7 @@ static int omap1_spi100k_runtime_suspend(struct device *dev)
 
 static int omap1_spi100k_runtime_resume(struct device *dev)
 {
-	struct spi_master *master = spi_master_get(dev_get_drvdata(dev));
+	struct spi_master *master = dev_get_drvdata(dev);
 	struct omap1_spi100k *spi100k = spi_master_get_devdata(master);
 	int ret;
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 024/240] intel_th: Consistency and off-by-one fix
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (22 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 023/240] spi: omap-100k: " Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 025/240] phy: phy-twl4030-usb: Fix possible use-after-free in twl4030_usb_remove() Greg Kroah-Hartman
                   ` (220 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Pavel Machek, Alexander Shishkin,
	Andy Shevchenko, Sasha Levin

From: Pavel Machek <pavel@ucw.cz>

[ Upstream commit 18ffbc47d45a1489b664dd68fb3a7610a6e1dea3 ]

Consistently use "< ... +1" in for loops.

Fix of-by-one in for_each_set_bit().

Signed-off-by: Pavel Machek <pavel@denx.de>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Link: https://lore.kernel.org/lkml/20190724095841.GA6952@amd/
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210414171251.14672-6-alexander.shishkin@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hwtracing/intel_th/gth.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/hwtracing/intel_th/gth.c b/drivers/hwtracing/intel_th/gth.c
index 98a4cb5d4993..9c236c88bc7b 100644
--- a/drivers/hwtracing/intel_th/gth.c
+++ b/drivers/hwtracing/intel_th/gth.c
@@ -485,7 +485,7 @@ static void intel_th_gth_disable(struct intel_th_device *thdev,
 	output->active = false;
 
 	for_each_set_bit(master, gth->output[output->port].master,
-			 TH_CONFIGURABLE_MASTERS) {
+			 TH_CONFIGURABLE_MASTERS + 1) {
 		gth_master_set(gth, master, -1);
 	}
 	spin_unlock(&gth->gth_lock);
@@ -605,7 +605,7 @@ static void intel_th_gth_unassign(struct intel_th_device *thdev,
 	othdev->output.port = -1;
 	othdev->output.active = false;
 	gth->output[port].output = NULL;
-	for (master = 0; master <= TH_CONFIGURABLE_MASTERS; master++)
+	for (master = 0; master < TH_CONFIGURABLE_MASTERS + 1; master++)
 		if (gth->master[master] == port)
 			gth->master[master] = -1;
 	spin_unlock(&gth->gth_lock);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 025/240] phy: phy-twl4030-usb: Fix possible use-after-free in twl4030_usb_remove()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (23 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 024/240] intel_th: Consistency and off-by-one fix Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 026/240] btrfs: convert logic BUG_ON()s in replace_path to ASSERT()s Greg Kroah-Hartman
                   ` (219 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Hulk Robot, Yang Yingliang,
	Vinod Koul, Sasha Levin

From: Yang Yingliang <yangyingliang@huawei.com>

[ Upstream commit e1723d8b87b73ab363256e7ca3af3ddb75855680 ]

This driver's remove path calls cancel_delayed_work(). However, that
function does not wait until the work function finishes. This means
that the callback function may still be running after the driver's
remove function has finished, which would result in a use-after-free.

Fix by calling cancel_delayed_work_sync(), which ensures that
the work is properly cancelled, no longer running, and unable
to re-schedule itself.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20210407092716.3270248-1-yangyingliang@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/phy/phy-twl4030-usb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/phy/phy-twl4030-usb.c b/drivers/phy/phy-twl4030-usb.c
index ddb530ee2255..9d57695e1f21 100644
--- a/drivers/phy/phy-twl4030-usb.c
+++ b/drivers/phy/phy-twl4030-usb.c
@@ -798,7 +798,7 @@ static int twl4030_usb_remove(struct platform_device *pdev)
 
 	usb_remove_phy(&twl->phy);
 	pm_runtime_get_sync(twl->dev);
-	cancel_delayed_work(&twl->id_workaround_work);
+	cancel_delayed_work_sync(&twl->id_workaround_work);
 	device_remove_file(twl->dev, &dev_attr_vbus);
 
 	/* set transceiver mode to power on defaults */
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 026/240] btrfs: convert logic BUG_ON()s in replace_path to ASSERT()s
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (24 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 025/240] phy: phy-twl4030-usb: Fix possible use-after-free in twl4030_usb_remove() Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 027/240] scsi: target: pscsi: Fix warning in pscsi_complete_cmd() Greg Kroah-Hartman
                   ` (218 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Qu Wenruo, Josef Bacik, David Sterba,
	Sasha Levin

From: Josef Bacik <josef@toxicpanda.com>

[ Upstream commit 7a9213a93546e7eaef90e6e153af6b8fc7553f10 ]

A few BUG_ON()'s in replace_path are purely to keep us from making
logical mistakes, so replace them with ASSERT()'s.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/btrfs/relocation.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index cd5b86d80e7a..5caf4dbdd801 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -1801,8 +1801,8 @@ int replace_path(struct btrfs_trans_handle *trans,
 	int ret;
 	int slot;
 
-	BUG_ON(src->root_key.objectid != BTRFS_TREE_RELOC_OBJECTID);
-	BUG_ON(dest->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID);
+	ASSERT(src->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID);
+	ASSERT(dest->root_key.objectid != BTRFS_TREE_RELOC_OBJECTID);
 
 	last_snapshot = btrfs_root_last_snapshot(&src->root_item);
 again:
@@ -1834,7 +1834,7 @@ again:
 	parent = eb;
 	while (1) {
 		level = btrfs_header_level(parent);
-		BUG_ON(level < lowest_level);
+		ASSERT(level >= lowest_level);
 
 		ret = btrfs_bin_search(parent, &key, level, &slot);
 		if (ret && slot > 0)
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 027/240] scsi: target: pscsi: Fix warning in pscsi_complete_cmd()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (25 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 026/240] btrfs: convert logic BUG_ON()s in replace_path to ASSERT()s Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 028/240] media: ite-cir: check for receive overflow Greg Kroah-Hartman
                   ` (217 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Mike Christie, Johannes Thumshirn,
	Chaitanya Kulkarni, Martin K. Petersen, Sasha Levin

From: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>

[ Upstream commit fd48c056a32ed6e7754c7c475490f3bed54ed378 ]

This fixes a compilation warning in pscsi_complete_cmd():

     drivers/target/target_core_pscsi.c: In function ‘pscsi_complete_cmd’:
     drivers/target/target_core_pscsi.c:624:5: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]
     ; /* XXX: TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE */

Link: https://lore.kernel.org/r/20210228055645.22253-5-chaitanya.kulkarni@wdc.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/target/target_core_pscsi.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c
index 079db0bd3917..089ba39f76a2 100644
--- a/drivers/target/target_core_pscsi.c
+++ b/drivers/target/target_core_pscsi.c
@@ -629,8 +629,9 @@ static void pscsi_transport_complete(struct se_cmd *cmd, struct scatterlist *sg,
 			unsigned char *buf;
 
 			buf = transport_kmap_data_sg(cmd);
-			if (!buf)
+			if (!buf) {
 				; /* XXX: TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE */
+			}
 
 			if (cdb[0] == MODE_SENSE_10) {
 				if (!(buf[3] & 0x80))
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 028/240] media: ite-cir: check for receive overflow
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (26 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 027/240] scsi: target: pscsi: Fix warning in pscsi_complete_cmd() Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 029/240] extcon: arizona: Fix some issues when HPDET IRQ fires after the jack has been unplugged Greg Kroah-Hartman
                   ` (216 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Sean Young, Mauro Carvalho Chehab,
	Sasha Levin

From: Sean Young <sean@mess.org>

[ Upstream commit 28c7afb07ccfc0a939bb06ac1e7afe669901c65a ]

It's best if this condition is reported.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/rc/ite-cir.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/media/rc/ite-cir.c b/drivers/media/rc/ite-cir.c
index 63165d324fff..7d3e50d94d86 100644
--- a/drivers/media/rc/ite-cir.c
+++ b/drivers/media/rc/ite-cir.c
@@ -292,8 +292,14 @@ static irqreturn_t ite_cir_isr(int irq, void *data)
 	/* read the interrupt flags */
 	iflags = dev->params.get_irq_causes(dev);
 
+	/* Check for RX overflow */
+	if (iflags & ITE_IRQ_RX_FIFO_OVERRUN) {
+		dev_warn(&dev->rdev->dev, "receive overflow\n");
+		ir_raw_event_reset(dev->rdev);
+	}
+
 	/* check for the receive interrupt */
-	if (iflags & (ITE_IRQ_RX_FIFO | ITE_IRQ_RX_FIFO_OVERRUN)) {
+	if (iflags & ITE_IRQ_RX_FIFO) {
 		/* read the FIFO bytes */
 		rx_bytes =
 			dev->params.get_rx_bytes(dev, rx_buf,
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 029/240] extcon: arizona: Fix some issues when HPDET IRQ fires after the jack has been unplugged
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (27 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 028/240] media: ite-cir: check for receive overflow Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 030/240] media: media/saa7164: fix saa7164_encoder_register() memory leak bugs Greg Kroah-Hartman
                   ` (215 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Hans de Goede, Andy Shevchenko,
	Charles Keepax, Chanwoo Choi, Lee Jones, Sasha Levin

From: Hans de Goede <hdegoede@redhat.com>

[ Upstream commit c309a3e8793f7e01c4a4ec7960658380572cb576 ]

When the jack is partially inserted and then removed again it may be
removed while the hpdet code is running. In this case the following
may happen:

1. The "JACKDET rise" or ""JACKDET fall" IRQ triggers
2. arizona_jackdet runs and takes info->lock
3. The "HPDET" IRQ triggers
4. arizona_hpdet_irq runs, blocks on info->lock
5. arizona_jackdet calls arizona_stop_mic() and clears info->hpdet_done
6. arizona_jackdet releases info->lock
7. arizona_hpdet_irq now can continue running and:
7.1 Calls arizona_start_mic() (if a mic was detected)
7.2 sets info->hpdet_done

Step 7 is undesirable / a bug:
7.1 causes the device to stay in a high power-state (with MICVDD enabled)
7.2 causes hpdet to not run on the next jack insertion, which in turn
    causes the EXTCON_JACK_HEADPHONE state to never get set

This fixes both issues by skipping these 2 steps when arizona_hpdet_irq
runs after the jack has been unplugged.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Tested-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/extcon/extcon-arizona.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index 4c0b6df8b5dd..1d06d99b8bd9 100644
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -601,7 +601,7 @@ static irqreturn_t arizona_hpdet_irq(int irq, void *data)
 	struct arizona *arizona = info->arizona;
 	int id_gpio = arizona->pdata.hpdet_id_gpio;
 	unsigned int report = EXTCON_JACK_HEADPHONE;
-	int ret, reading;
+	int ret, reading, state;
 	bool mic = false;
 
 	mutex_lock(&info->lock);
@@ -614,12 +614,11 @@ static irqreturn_t arizona_hpdet_irq(int irq, void *data)
 	}
 
 	/* If the cable was removed while measuring ignore the result */
-	ret = extcon_get_state(info->edev, EXTCON_MECHANICAL);
-	if (ret < 0) {
-		dev_err(arizona->dev, "Failed to check cable state: %d\n",
-			ret);
+	state = extcon_get_state(info->edev, EXTCON_MECHANICAL);
+	if (state < 0) {
+		dev_err(arizona->dev, "Failed to check cable state: %d\n", state);
 		goto out;
-	} else if (!ret) {
+	} else if (!state) {
 		dev_dbg(arizona->dev, "Ignoring HPDET for removed cable\n");
 		goto done;
 	}
@@ -672,7 +671,7 @@ done:
 			   ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
 
 	/* If we have a mic then reenable MICDET */
-	if (mic || info->mic)
+	if (state && (mic || info->mic))
 		arizona_start_mic(info);
 
 	if (info->hpdet_active) {
@@ -680,7 +679,9 @@ done:
 		info->hpdet_active = false;
 	}
 
-	info->hpdet_done = true;
+	/* Do not set hp_det done when the cable has been unplugged */
+	if (state)
+		info->hpdet_done = true;
 
 out:
 	mutex_unlock(&info->lock);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 030/240] media: media/saa7164: fix saa7164_encoder_register() memory leak bugs
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (28 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 029/240] extcon: arizona: Fix some issues when HPDET IRQ fires after the jack has been unplugged Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 031/240] media: gspca/sq905.c: fix uninitialized variable Greg Kroah-Hartman
                   ` (214 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Daniel Niv, Hans Verkuil,
	Mauro Carvalho Chehab, Sasha Levin

From: Daniel Niv <danielniv3@gmail.com>

[ Upstream commit c759b2970c561e3b56aa030deb13db104262adfe ]

Add a fix for the memory leak bugs that can occur when the
saa7164_encoder_register() function fails.
The function allocates memory without explicitly freeing
it when errors occur.
Add a better error handling that deallocate the unused buffers before the
function exits during a fail.

Signed-off-by: Daniel Niv <danielniv3@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/pci/saa7164/saa7164-encoder.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/drivers/media/pci/saa7164/saa7164-encoder.c b/drivers/media/pci/saa7164/saa7164-encoder.c
index 32a353d162e7..f2e6fbfa019f 100644
--- a/drivers/media/pci/saa7164/saa7164-encoder.c
+++ b/drivers/media/pci/saa7164/saa7164-encoder.c
@@ -1030,7 +1030,7 @@ int saa7164_encoder_register(struct saa7164_port *port)
 		       "(errno = %d), NO PCI configuration\n",
 			__func__, result);
 		result = -ENOMEM;
-		goto failed;
+		goto fail_pci;
 	}
 
 	/* Establish encoder defaults here */
@@ -1084,7 +1084,7 @@ int saa7164_encoder_register(struct saa7164_port *port)
 			  100000, ENCODER_DEF_BITRATE);
 	if (hdl->error) {
 		result = hdl->error;
-		goto failed;
+		goto fail_hdl;
 	}
 
 	port->std = V4L2_STD_NTSC_M;
@@ -1102,7 +1102,7 @@ int saa7164_encoder_register(struct saa7164_port *port)
 		printk(KERN_INFO "%s: can't allocate mpeg device\n",
 			dev->name);
 		result = -ENOMEM;
-		goto failed;
+		goto fail_hdl;
 	}
 
 	port->v4l_device->ctrl_handler = hdl;
@@ -1113,10 +1113,7 @@ int saa7164_encoder_register(struct saa7164_port *port)
 	if (result < 0) {
 		printk(KERN_INFO "%s: can't register mpeg device\n",
 			dev->name);
-		/* TODO: We're going to leak here if we don't dealloc
-		 The buffers above. The unreg function can't deal wit it.
-		*/
-		goto failed;
+		goto fail_reg;
 	}
 
 	printk(KERN_INFO "%s: registered device video%d [mpeg]\n",
@@ -1138,9 +1135,14 @@ int saa7164_encoder_register(struct saa7164_port *port)
 
 	saa7164_api_set_encoder(port);
 	saa7164_api_get_encoder(port);
+	return 0;
 
-	result = 0;
-failed:
+fail_reg:
+	video_device_release(port->v4l_device);
+	port->v4l_device = NULL;
+fail_hdl:
+	v4l2_ctrl_handler_free(hdl);
+fail_pci:
 	return result;
 }
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 031/240] media: gspca/sq905.c: fix uninitialized variable
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (29 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 030/240] media: media/saa7164: fix saa7164_encoder_register() memory leak bugs Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 032/240] power: supply: Use IRQF_ONESHOT Greg Kroah-Hartman
                   ` (213 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Hans Verkuil,
	syzbot+a4e309017a5f3a24c7b3, Mauro Carvalho Chehab, Sasha Levin

From: Hans Verkuil <hverkuil-cisco@xs4all.nl>

[ Upstream commit eaaea4681984c79d2b2b160387b297477f0c1aab ]

act_len can be uninitialized if usb_bulk_msg() returns an error.
Set it to 0 to avoid a KMSAN error.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reported-by: syzbot+a4e309017a5f3a24c7b3@syzkaller.appspotmail.com
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/usb/gspca/sq905.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/usb/gspca/sq905.c b/drivers/media/usb/gspca/sq905.c
index a7ae0ec9fa91..03322d2b2e82 100644
--- a/drivers/media/usb/gspca/sq905.c
+++ b/drivers/media/usb/gspca/sq905.c
@@ -172,7 +172,7 @@ static int
 sq905_read_data(struct gspca_dev *gspca_dev, u8 *data, int size, int need_lock)
 {
 	int ret;
-	int act_len;
+	int act_len = 0;
 
 	gspca_dev->usb_buf[0] = '\0';
 	if (need_lock)
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 032/240] power: supply: Use IRQF_ONESHOT
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (30 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 031/240] media: gspca/sq905.c: fix uninitialized variable Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 033/240] scsi: qla2xxx: Always check the return value of qla24xx_get_isp_stats() Greg Kroah-Hartman
                   ` (212 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, dongjian, Sebastian Reichel, Sasha Levin

From: dongjian <dongjian@yulong.com>

[ Upstream commit 2469b836fa835c67648acad17d62bc805236a6ea ]

Fixes coccicheck error:

drivers/power/supply/pm2301_charger.c:1089:7-27: ERROR:
drivers/power/supply/lp8788-charger.c:502:8-28: ERROR:
drivers/power/supply/tps65217_charger.c:239:8-33: ERROR:
drivers/power/supply/tps65090-charger.c:303:8-33: ERROR:

Threaded IRQ with no primary handler requested without IRQF_ONESHOT

Signed-off-by: dongjian <dongjian@yulong.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/power/supply/lp8788-charger.c   | 2 +-
 drivers/power/supply/pm2301_charger.c   | 2 +-
 drivers/power/supply/tps65090-charger.c | 2 +-
 drivers/power/supply/tps65217_charger.c | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/power/supply/lp8788-charger.c b/drivers/power/supply/lp8788-charger.c
index c3075ea011b6..e800beff1f8f 100644
--- a/drivers/power/supply/lp8788-charger.c
+++ b/drivers/power/supply/lp8788-charger.c
@@ -532,7 +532,7 @@ static int lp8788_set_irqs(struct platform_device *pdev,
 
 		ret = request_threaded_irq(virq, NULL,
 					lp8788_charger_irq_thread,
-					0, name, pchg);
+					IRQF_ONESHOT, name, pchg);
 		if (ret)
 			break;
 	}
diff --git a/drivers/power/supply/pm2301_charger.c b/drivers/power/supply/pm2301_charger.c
index 78561b6884fc..9ef218d76aa9 100644
--- a/drivers/power/supply/pm2301_charger.c
+++ b/drivers/power/supply/pm2301_charger.c
@@ -1098,7 +1098,7 @@ static int pm2xxx_wall_charger_probe(struct i2c_client *i2c_client,
 	ret = request_threaded_irq(gpio_to_irq(pm2->pdata->gpio_irq_number),
 				NULL,
 				pm2xxx_charger_irq[0].isr,
-				pm2->pdata->irq_type,
+				pm2->pdata->irq_type | IRQF_ONESHOT,
 				pm2xxx_charger_irq[0].name, pm2);
 
 	if (ret != 0) {
diff --git a/drivers/power/supply/tps65090-charger.c b/drivers/power/supply/tps65090-charger.c
index 1b4b5e09538e..297bf58f0d4f 100644
--- a/drivers/power/supply/tps65090-charger.c
+++ b/drivers/power/supply/tps65090-charger.c
@@ -311,7 +311,7 @@ static int tps65090_charger_probe(struct platform_device *pdev)
 
 	if (irq != -ENXIO) {
 		ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
-			tps65090_charger_isr, 0, "tps65090-charger", cdata);
+			tps65090_charger_isr, IRQF_ONESHOT, "tps65090-charger", cdata);
 		if (ret) {
 			dev_err(cdata->dev,
 				"Unable to register irq %d err %d\n", irq,
diff --git a/drivers/power/supply/tps65217_charger.c b/drivers/power/supply/tps65217_charger.c
index 9fd019f9b88c..a6b4eb61b4bb 100644
--- a/drivers/power/supply/tps65217_charger.c
+++ b/drivers/power/supply/tps65217_charger.c
@@ -238,7 +238,7 @@ static int tps65217_charger_probe(struct platform_device *pdev)
 	if (irq != -ENXIO) {
 		ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
 						tps65217_charger_irq,
-						0, "tps65217-charger",
+						IRQF_ONESHOT, "tps65217-charger",
 						charger);
 		if (ret) {
 			dev_err(charger->dev,
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 033/240] scsi: qla2xxx: Always check the return value of qla24xx_get_isp_stats()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (31 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 032/240] power: supply: Use IRQF_ONESHOT Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 034/240] scsi: scsi_dh_alua: Remove check for ASC 24h in alua_rtpg() Greg Kroah-Hartman
                   ` (211 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Quinn Tran, Mike Christie,
	Himanshu Madhani, Daniel Wagner, Lee Duncan, Bart Van Assche,
	Martin K. Petersen, Sasha Levin

From: Bart Van Assche <bvanassche@acm.org>

[ Upstream commit a2b2cc660822cae08c351c7f6b452bfd1330a4f7 ]

This patch fixes the following Coverity warning:

    CID 361199 (#1 of 1): Unchecked return value (CHECKED_RETURN)
    3. check_return: Calling qla24xx_get_isp_stats without checking return
    value (as is done elsewhere 4 out of 5 times).

Link: https://lore.kernel.org/r/20210320232359.941-7-bvanassche@acm.org
Cc: Quinn Tran <qutran@marvell.com>
Cc: Mike Christie <michael.christie@oracle.com>
Cc: Himanshu Madhani <himanshu.madhani@oracle.com>
Cc: Daniel Wagner <dwagner@suse.de>
Cc: Lee Duncan <lduncan@suse.com>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/scsi/qla2xxx/qla_attr.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c
index 33f4181ba9f7..591e2e89ae9f 100644
--- a/drivers/scsi/qla2xxx/qla_attr.c
+++ b/drivers/scsi/qla2xxx/qla_attr.c
@@ -1909,6 +1909,8 @@ qla2x00_reset_host_stats(struct Scsi_Host *shost)
 	vha->qla_stats.jiffies_at_last_reset = get_jiffies_64();
 
 	if (IS_FWI2_CAPABLE(ha)) {
+		int rval;
+
 		stats = dma_alloc_coherent(&ha->pdev->dev,
 		    sizeof(*stats), &stats_dma, GFP_KERNEL);
 		if (!stats) {
@@ -1918,7 +1920,11 @@ qla2x00_reset_host_stats(struct Scsi_Host *shost)
 		}
 
 		/* reset firmware statistics */
-		qla24xx_get_isp_stats(base_vha, stats, stats_dma, BIT_0);
+		rval = qla24xx_get_isp_stats(base_vha, stats, stats_dma, BIT_0);
+		if (rval != QLA_SUCCESS)
+			ql_log(ql_log_warn, vha, 0x70de,
+			       "Resetting ISP statistics failed: rval = %d\n",
+			       rval);
 
 		dma_free_coherent(&ha->pdev->dev, sizeof(*stats),
 		    stats, stats_dma);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 034/240] scsi: scsi_dh_alua: Remove check for ASC 24h in alua_rtpg()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (32 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 033/240] scsi: qla2xxx: Always check the return value of qla24xx_get_isp_stats() Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 035/240] media: em28xx: fix memory leak Greg Kroah-Hartman
                   ` (210 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Hannes Reinecke, Ewan D. Milne,
	Martin K. Petersen, Sasha Levin

From: Ewan D. Milne <emilne@redhat.com>

[ Upstream commit bc3f2b42b70eb1b8576e753e7d0e117bbb674496 ]

Some arrays return ILLEGAL_REQUEST with ASC 00h if they don't support the
RTPG extended header so remove the check for INVALID FIELD IN CDB.

Link: https://lore.kernel.org/r/20210331201154.20348-1-emilne@redhat.com
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/scsi/device_handler/scsi_dh_alua.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c
index 2bc3dc6244a5..dce885276235 100644
--- a/drivers/scsi/device_handler/scsi_dh_alua.c
+++ b/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -564,10 +564,11 @@ static int alua_rtpg(struct scsi_device *sdev, struct alua_port_group *pg)
 		 * even though it shouldn't according to T10.
 		 * The retry without rtpg_ext_hdr_req set
 		 * handles this.
+		 * Note:  some arrays return a sense key of ILLEGAL_REQUEST
+		 * with ASC 00h if they don't support the extended header.
 		 */
 		if (!(pg->flags & ALUA_RTPG_EXT_HDR_UNSUPP) &&
-		    sense_hdr.sense_key == ILLEGAL_REQUEST &&
-		    sense_hdr.asc == 0x24 && sense_hdr.ascq == 0) {
+		    sense_hdr.sense_key == ILLEGAL_REQUEST) {
 			pg->flags |= ALUA_RTPG_EXT_HDR_UNSUPP;
 			goto retry;
 		}
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 035/240] media: em28xx: fix memory leak
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (33 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 034/240] scsi: scsi_dh_alua: Remove check for ASC 24h in alua_rtpg() Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 036/240] clk: socfpga: arria10: Fix memory leak of socfpga_clk on error return Greg Kroah-Hartman
                   ` (209 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, syzbot+889397c820fa56adf25d,
	Muhammad Usama Anjum, Hans Verkuil, Mauro Carvalho Chehab,
	Sasha Levin

From: Muhammad Usama Anjum <musamaanjum@gmail.com>

[ Upstream commit 0ae10a7dc8992ee682ff0b1752ff7c83d472eef1 ]

If some error occurs, URB buffers should also be freed. If they aren't
freed with the dvb here, the em28xx_dvb_fini call doesn't frees the URB
buffers as dvb is set to NULL. The function in which error occurs should
do all the cleanup for the allocations it had done.

Tested the patch with the reproducer provided by syzbot. This patch
fixes the memleak.

Reported-by: syzbot+889397c820fa56adf25d@syzkaller.appspotmail.com
Signed-off-by: Muhammad Usama Anjum <musamaanjum@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/usb/em28xx/em28xx-dvb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/media/usb/em28xx/em28xx-dvb.c b/drivers/media/usb/em28xx/em28xx-dvb.c
index b0aea48907b7..7e259be47252 100644
--- a/drivers/media/usb/em28xx/em28xx-dvb.c
+++ b/drivers/media/usb/em28xx/em28xx-dvb.c
@@ -1967,6 +1967,7 @@ ret:
 	return result;
 
 out_free:
+	em28xx_uninit_usb_xfer(dev, EM28XX_DIGITAL_MODE);
 	kfree(dvb);
 	dev->dvb = NULL;
 	goto ret;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 036/240] clk: socfpga: arria10: Fix memory leak of socfpga_clk on error return
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (34 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 035/240] media: em28xx: fix memory leak Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 037/240] power: supply: generic-adc-battery: fix possible use-after-free in gab_remove() Greg Kroah-Hartman
                   ` (208 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Colin Ian King, Dinh Nguyen,
	Krzysztof Kozlowski, Stephen Boyd, Sasha Levin

From: Colin Ian King <colin.king@canonical.com>

[ Upstream commit 657d4d1934f75a2d978c3cf2086495eaa542e7a9 ]

There is an error return path that is not kfree'ing socfpga_clk leading
to a memory leak. Fix this by adding in the missing kfree call.

Addresses-Coverity: ("Resource leak")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210406170115.430990-1-colin.king@canonical.com
Acked-by: Dinh Nguyen <dinguyen@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/clk/socfpga/clk-gate-a10.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/clk/socfpga/clk-gate-a10.c b/drivers/clk/socfpga/clk-gate-a10.c
index c2d572748167..7913dbedba89 100644
--- a/drivers/clk/socfpga/clk-gate-a10.c
+++ b/drivers/clk/socfpga/clk-gate-a10.c
@@ -157,6 +157,7 @@ static void __init __socfpga_gate_init(struct device_node *node,
 		if (IS_ERR(socfpga_clk->sys_mgr_base_addr)) {
 			pr_err("%s: failed to find altr,sys-mgr regmap!\n",
 					__func__);
+			kfree(socfpga_clk);
 			return;
 		}
 	}
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 037/240] power: supply: generic-adc-battery: fix possible use-after-free in gab_remove()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (35 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 036/240] clk: socfpga: arria10: Fix memory leak of socfpga_clk on error return Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 038/240] power: supply: s3c_adc_battery: fix possible use-after-free in s3c_adc_bat_remove() Greg Kroah-Hartman
                   ` (207 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Hulk Robot, Yang Yingliang,
	Sebastian Reichel, Sasha Levin

From: Yang Yingliang <yangyingliang@huawei.com>

[ Upstream commit b6cfa007b3b229771d9588970adb4ab3e0487f49 ]

This driver's remove path calls cancel_delayed_work(). However, that
function does not wait until the work function finishes. This means
that the callback function may still be running after the driver's
remove function has finished, which would result in a use-after-free.

Fix by calling cancel_delayed_work_sync(), which ensures that
the work is properly cancelled, no longer running, and unable
to re-schedule itself.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/power/supply/generic-adc-battery.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/power/supply/generic-adc-battery.c b/drivers/power/supply/generic-adc-battery.c
index f627b39f64bf..b77fd751945d 100644
--- a/drivers/power/supply/generic-adc-battery.c
+++ b/drivers/power/supply/generic-adc-battery.c
@@ -384,7 +384,7 @@ static int gab_remove(struct platform_device *pdev)
 	}
 
 	kfree(adc_bat->psy_desc.properties);
-	cancel_delayed_work(&adc_bat->bat_work);
+	cancel_delayed_work_sync(&adc_bat->bat_work);
 	return 0;
 }
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 038/240] power: supply: s3c_adc_battery: fix possible use-after-free in s3c_adc_bat_remove()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (36 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 037/240] power: supply: generic-adc-battery: fix possible use-after-free in gab_remove() Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 039/240] media: adv7604: fix possible use-after-free in adv76xx_remove() Greg Kroah-Hartman
                   ` (206 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Hulk Robot, Yang Yingliang,
	Krzysztof Kozlowski, Sebastian Reichel, Sasha Levin

From: Yang Yingliang <yangyingliang@huawei.com>

[ Upstream commit 68ae256945d2abe9036a7b68af4cc65aff79d5b7 ]

This driver's remove path calls cancel_delayed_work(). However, that
function does not wait until the work function finishes. This means
that the callback function may still be running after the driver's
remove function has finished, which would result in a use-after-free.

Fix by calling cancel_delayed_work_sync(), which ensures that
the work is properly cancelled, no longer running, and unable
to re-schedule itself.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/power/supply/s3c_adc_battery.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/power/supply/s3c_adc_battery.c b/drivers/power/supply/s3c_adc_battery.c
index 0ffe5cd3abf6..06b412c43aa7 100644
--- a/drivers/power/supply/s3c_adc_battery.c
+++ b/drivers/power/supply/s3c_adc_battery.c
@@ -392,7 +392,7 @@ static int s3c_adc_bat_remove(struct platform_device *pdev)
 		gpio_free(pdata->gpio_charge_finished);
 	}
 
-	cancel_delayed_work(&bat_work);
+	cancel_delayed_work_sync(&bat_work);
 
 	if (pdata->exit)
 		pdata->exit();
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 039/240] media: adv7604: fix possible use-after-free in adv76xx_remove()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (37 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 038/240] power: supply: s3c_adc_battery: fix possible use-after-free in s3c_adc_bat_remove() Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 040/240] media: i2c: adv7511-v4l2: fix possible use-after-free in adv7511_remove() Greg Kroah-Hartman
                   ` (205 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Hulk Robot, Yang Yingliang,
	Hans Verkuil, Mauro Carvalho Chehab, Sasha Levin

From: Yang Yingliang <yangyingliang@huawei.com>

[ Upstream commit fa56f5f1fe31c2050675fa63b84963ebd504a5b3 ]

This driver's remove path calls cancel_delayed_work(). However, that
function does not wait until the work function finishes. This means
that the callback function may still be running after the driver's
remove function has finished, which would result in a use-after-free.

Fix by calling cancel_delayed_work_sync(), which ensures that
the work is properly cancelled, no longer running, and unable
to re-schedule itself.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/i2c/adv7604.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c
index ce6f93074ae0..56b8b7bf759e 100644
--- a/drivers/media/i2c/adv7604.c
+++ b/drivers/media/i2c/adv7604.c
@@ -3541,7 +3541,7 @@ static int adv76xx_remove(struct i2c_client *client)
 	io_write(sd, 0x6e, 0);
 	io_write(sd, 0x73, 0);
 
-	cancel_delayed_work(&state->delayed_work_enable_hotplug);
+	cancel_delayed_work_sync(&state->delayed_work_enable_hotplug);
 	v4l2_async_unregister_subdev(sd);
 	media_entity_cleanup(&sd->entity);
 	adv76xx_unregister_clients(to_state(sd));
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 040/240] media: i2c: adv7511-v4l2: fix possible use-after-free in adv7511_remove()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (38 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 039/240] media: adv7604: fix possible use-after-free in adv76xx_remove() Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 041/240] media: i2c: adv7842: fix possible use-after-free in adv7842_remove() Greg Kroah-Hartman
                   ` (204 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Hulk Robot, Yang Yingliang,
	Hans Verkuil, Mauro Carvalho Chehab, Sasha Levin

From: Yang Yingliang <yangyingliang@huawei.com>

[ Upstream commit 2c9541720c66899adf6f3600984cf3ef151295ad ]

This driver's remove path calls cancel_delayed_work(). However, that
function does not wait until the work function finishes. This means
that the callback function may still be running after the driver's
remove function has finished, which would result in a use-after-free.

Fix by calling cancel_delayed_work_sync(), which ensures that
the work is properly cancelled, no longer running, and unable
to re-schedule itself.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/i2c/adv7511-v4l2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/i2c/adv7511-v4l2.c b/drivers/media/i2c/adv7511-v4l2.c
index b87c9e7ff146..e81c4cca50c6 100644
--- a/drivers/media/i2c/adv7511-v4l2.c
+++ b/drivers/media/i2c/adv7511-v4l2.c
@@ -1976,7 +1976,7 @@ static int adv7511_remove(struct i2c_client *client)
 
 	adv7511_set_isr(sd, false);
 	adv7511_init_setup(sd);
-	cancel_delayed_work(&state->edid_handler);
+	cancel_delayed_work_sync(&state->edid_handler);
 	i2c_unregister_device(state->i2c_edid);
 	if (state->i2c_cec)
 		i2c_unregister_device(state->i2c_cec);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 041/240] media: i2c: adv7842: fix possible use-after-free in adv7842_remove()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (39 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 040/240] media: i2c: adv7511-v4l2: fix possible use-after-free in adv7511_remove() Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 042/240] media: dvb-usb: fix memory leak in dvb_usb_adapter_init Greg Kroah-Hartman
                   ` (203 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Hulk Robot, Yang Yingliang,
	Hans Verkuil, Mauro Carvalho Chehab, Sasha Levin

From: Yang Yingliang <yangyingliang@huawei.com>

[ Upstream commit 4a15275b6a18597079f18241c87511406575179a ]

This driver's remove path calls cancel_delayed_work(). However, that
function does not wait until the work function finishes. This means
that the callback function may still be running after the driver's
remove function has finished, which would result in a use-after-free.

Fix by calling cancel_delayed_work_sync(), which ensures that
the work is properly cancelled, no longer running, and unable
to re-schedule itself.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/i2c/adv7842.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/i2c/adv7842.c b/drivers/media/i2c/adv7842.c
index cf3b42c9417e..d7af4fbcb84b 100644
--- a/drivers/media/i2c/adv7842.c
+++ b/drivers/media/i2c/adv7842.c
@@ -3598,7 +3598,7 @@ static int adv7842_remove(struct i2c_client *client)
 	struct adv7842_state *state = to_state(sd);
 
 	adv7842_irq_enable(sd, false);
-	cancel_delayed_work(&state->delayed_work_enable_hotplug);
+	cancel_delayed_work_sync(&state->delayed_work_enable_hotplug);
 	v4l2_device_unregister_subdev(sd);
 	media_entity_cleanup(&sd->entity);
 	adv7842_unregister_clients(sd);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 042/240] media: dvb-usb: fix memory leak in dvb_usb_adapter_init
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (40 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 041/240] media: i2c: adv7842: fix possible use-after-free in adv7842_remove() Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 043/240] media: gscpa/stv06xx: fix memory leak Greg Kroah-Hartman
                   ` (202 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Pavel Skripkin,
	syzbot+3c2be7424cea3b932b0e, Sean Young, Mauro Carvalho Chehab,
	Sasha Levin

From: Pavel Skripkin <paskripkin@gmail.com>

[ Upstream commit b7cd0da982e3043f2eec7235ac5530cb18d6af1d ]

syzbot reported memory leak in dvb-usb. The problem was
in invalid error handling in dvb_usb_adapter_init().

for (n = 0; n < d->props.num_adapters; n++) {
....
	if ((ret = dvb_usb_adapter_stream_init(adap)) ||
		(ret = dvb_usb_adapter_dvb_init(adap, adapter_nrs)) ||
		(ret = dvb_usb_adapter_frontend_init(adap))) {
		return ret;
	}
...
	d->num_adapters_initialized++;
...
}

In case of error in dvb_usb_adapter_dvb_init() or
dvb_usb_adapter_dvb_init() d->num_adapters_initialized won't be
incremented, but dvb_usb_adapter_exit() relies on it:

	for (n = 0; n < d->num_adapters_initialized; n++)

So, allocated objects won't be freed.

Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Reported-by: syzbot+3c2be7424cea3b932b0e@syzkaller.appspotmail.com
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/usb/dvb-usb/dvb-usb-init.c | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/drivers/media/usb/dvb-usb/dvb-usb-init.c b/drivers/media/usb/dvb-usb/dvb-usb-init.c
index b3413404f91a..690c1e06fbfa 100644
--- a/drivers/media/usb/dvb-usb/dvb-usb-init.c
+++ b/drivers/media/usb/dvb-usb/dvb-usb-init.c
@@ -82,11 +82,17 @@ static int dvb_usb_adapter_init(struct dvb_usb_device *d, short *adapter_nrs)
 			}
 		}
 
-		if ((ret = dvb_usb_adapter_stream_init(adap)) ||
-			(ret = dvb_usb_adapter_dvb_init(adap, adapter_nrs)) ||
-			(ret = dvb_usb_adapter_frontend_init(adap))) {
+		ret = dvb_usb_adapter_stream_init(adap);
+		if (ret)
 			return ret;
-		}
+
+		ret = dvb_usb_adapter_dvb_init(adap, adapter_nrs);
+		if (ret)
+			goto dvb_init_err;
+
+		ret = dvb_usb_adapter_frontend_init(adap);
+		if (ret)
+			goto frontend_init_err;
 
 		/* use exclusive FE lock if there is multiple shared FEs */
 		if (adap->fe_adap[1].fe)
@@ -106,6 +112,12 @@ static int dvb_usb_adapter_init(struct dvb_usb_device *d, short *adapter_nrs)
 	}
 
 	return 0;
+
+frontend_init_err:
+	dvb_usb_adapter_dvb_exit(adap);
+dvb_init_err:
+	dvb_usb_adapter_stream_exit(adap);
+	return ret;
 }
 
 static int dvb_usb_adapter_exit(struct dvb_usb_device *d)
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 043/240] media: gscpa/stv06xx: fix memory leak
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (41 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 042/240] media: dvb-usb: fix memory leak in dvb_usb_adapter_init Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 044/240] drm/msm/mdp5: Configure PP_SYNC_HEIGHT to double the vtotal Greg Kroah-Hartman
                   ` (201 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Hans Verkuil, Mauro Carvalho Chehab,
	Sasha Levin, syzbot+e7f4c64a4248a0340c37

From: Hans Verkuil <hverkuil-cisco@xs4all.nl>

[ Upstream commit 4f4e6644cd876c844cdb3bea2dd7051787d5ae25 ]

For two of the supported sensors the stv06xx driver allocates memory which
is stored in sd->sensor_priv. This memory is freed on a disconnect, but if
the probe() fails, then it isn't freed and so this leaks memory.

Add a new probe_error() op that drivers can use to free any allocated
memory in case there was a probe failure.

Thanks to Pavel Skripkin <paskripkin@gmail.com> for discovering the cause
of the memory leak.

Reported-and-tested-by: syzbot+e7f4c64a4248a0340c37@syzkaller.appspotmail.com

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/usb/gspca/gspca.c           | 2 ++
 drivers/media/usb/gspca/gspca.h           | 1 +
 drivers/media/usb/gspca/stv06xx/stv06xx.c | 9 +++++++++
 3 files changed, 12 insertions(+)

diff --git a/drivers/media/usb/gspca/gspca.c b/drivers/media/usb/gspca/gspca.c
index d239075a6a65..79f1e8904e30 100644
--- a/drivers/media/usb/gspca/gspca.c
+++ b/drivers/media/usb/gspca/gspca.c
@@ -2146,6 +2146,8 @@ out:
 #endif
 	v4l2_ctrl_handler_free(gspca_dev->vdev.ctrl_handler);
 	v4l2_device_unregister(&gspca_dev->v4l2_dev);
+	if (sd_desc->probe_error)
+		sd_desc->probe_error(gspca_dev);
 	kfree(gspca_dev->usb_buf);
 	kfree(gspca_dev);
 	return ret;
diff --git a/drivers/media/usb/gspca/gspca.h b/drivers/media/usb/gspca/gspca.h
index d39adf90303b..bec8fccc2c94 100644
--- a/drivers/media/usb/gspca/gspca.h
+++ b/drivers/media/usb/gspca/gspca.h
@@ -101,6 +101,7 @@ struct sd_desc {
 	cam_cf_op config;	/* called on probe */
 	cam_op init;		/* called on probe and resume */
 	cam_op init_controls;	/* called on probe */
+	cam_v_op probe_error;	/* called if probe failed, do cleanup here */
 	cam_op start;		/* called on stream on after URBs creation */
 	cam_pkt_op pkt_scan;
 /* optional operations */
diff --git a/drivers/media/usb/gspca/stv06xx/stv06xx.c b/drivers/media/usb/gspca/stv06xx/stv06xx.c
index 7d255529ed4c..40d4c99debb8 100644
--- a/drivers/media/usb/gspca/stv06xx/stv06xx.c
+++ b/drivers/media/usb/gspca/stv06xx/stv06xx.c
@@ -541,12 +541,21 @@ static int sd_int_pkt_scan(struct gspca_dev *gspca_dev,
 static int stv06xx_config(struct gspca_dev *gspca_dev,
 			  const struct usb_device_id *id);
 
+static void stv06xx_probe_error(struct gspca_dev *gspca_dev)
+{
+	struct sd *sd = (struct sd *)gspca_dev;
+
+	kfree(sd->sensor_priv);
+	sd->sensor_priv = NULL;
+}
+
 /* sub-driver description */
 static const struct sd_desc sd_desc = {
 	.name = MODULE_NAME,
 	.config = stv06xx_config,
 	.init = stv06xx_init,
 	.init_controls = stv06xx_init_controls,
+	.probe_error = stv06xx_probe_error,
 	.start = stv06xx_start,
 	.stopN = stv06xx_stopN,
 	.pkt_scan = stv06xx_pkt_scan,
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 044/240] drm/msm/mdp5: Configure PP_SYNC_HEIGHT to double the vtotal
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (42 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 043/240] media: gscpa/stv06xx: fix memory leak Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 045/240] drm/amdgpu: fix NULL pointer dereference Greg Kroah-Hartman
                   ` (200 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, AngeloGioacchino Del Regno,
	Marijn Suijten, Rob Clark, Sasha Levin

From: Marijn Suijten <marijn.suijten@somainline.org>

[ Upstream commit 2ad52bdb220de5ab348098e3482b01235d15a842 ]

Leaving this at a close-to-maximum register value 0xFFF0 means it takes
very long for the MDSS to generate a software vsync interrupt when the
hardware TE interrupt doesn't arrive.  Configuring this to double the
vtotal (like some downstream kernels) leads to a frame to take at most
twice before the vsync signal, until hardware TE comes up.

In this case the hardware interrupt responsible for providing this
signal - "disp-te" gpio - is not hooked up to the mdp5 vsync/pp logic at
all.  This solves severe panel update issues observed on at least the
Xperia Loire and Tone series, until said gpio is properly hooked up to
an irq.

Suggested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Link: https://lore.kernel.org/r/20210406214726.131534-2-marijn.suijten@somainline.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/msm/mdp/mdp5/mdp5_cmd_encoder.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cmd_encoder.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cmd_encoder.c
index c627ab6d0061..8ac54b9dcd39 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cmd_encoder.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cmd_encoder.c
@@ -128,9 +128,17 @@ static int pingpong_tearcheck_setup(struct drm_encoder *encoder,
 		| MDP5_PP_SYNC_CONFIG_VSYNC_IN_EN;
 	cfg |= MDP5_PP_SYNC_CONFIG_VSYNC_COUNT(vclks_line);
 
+	/*
+	 * Tearcheck emits a blanking signal every vclks_line * vtotal * 2 ticks on
+	 * the vsync_clk equating to roughly half the desired panel refresh rate.
+	 * This is only necessary as stability fallback if interrupts from the
+	 * panel arrive too late or not at all, but is currently used by default
+	 * because these panel interrupts are not wired up yet.
+	 */
 	mdp5_write(mdp5_kms, REG_MDP5_PP_SYNC_CONFIG_VSYNC(pp_id), cfg);
 	mdp5_write(mdp5_kms,
-		REG_MDP5_PP_SYNC_CONFIG_HEIGHT(pp_id), 0xfff0);
+		REG_MDP5_PP_SYNC_CONFIG_HEIGHT(pp_id), (2 * mode->vtotal));
+
 	mdp5_write(mdp5_kms,
 		REG_MDP5_PP_VSYNC_INIT_VAL(pp_id), mode->vdisplay);
 	mdp5_write(mdp5_kms, REG_MDP5_PP_RD_PTR_IRQ(pp_id), mode->vdisplay + 1);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 045/240] drm/amdgpu: fix NULL pointer dereference
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (43 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 044/240] drm/msm/mdp5: Configure PP_SYNC_HEIGHT to double the vtotal Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 046/240] scsi: lpfc: Fix crash when a REG_RPI mailbox fails triggering a LOGO response Greg Kroah-Hartman
                   ` (199 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Guchun Chen, Christian König,
	Alex Deucher, Sasha Levin

From: Guchun Chen <guchun.chen@amd.com>

[ Upstream commit 3c3dc654333f6389803cdcaf03912e94173ae510 ]

ttm->sg needs to be checked before accessing its child member.

Call Trace:
 amdgpu_ttm_backend_destroy+0x12/0x70 [amdgpu]
 ttm_bo_cleanup_memtype_use+0x3a/0x60 [ttm]
 ttm_bo_release+0x17d/0x300 [ttm]
 amdgpu_bo_unref+0x1a/0x30 [amdgpu]
 amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu+0x78b/0x8b0 [amdgpu]
 kfd_ioctl_alloc_memory_of_gpu+0x118/0x220 [amdgpu]
 kfd_ioctl+0x222/0x400 [amdgpu]
 ? kfd_dev_is_large_bar+0x90/0x90 [amdgpu]
 __x64_sys_ioctl+0x8e/0xd0
 ? __context_tracking_exit+0x52/0x90
 do_syscall_64+0x33/0x80
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f97f264d317
Code: b3 66 90 48 8b 05 71 4b 2d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 41 4b 2d 00 f7 d8 64 89 01 48
RSP: 002b:00007ffdb402c338 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f97f3cc63a0 RCX: 00007f97f264d317
RDX: 00007ffdb402c380 RSI: 00000000c0284b16 RDI: 0000000000000003
RBP: 00007ffdb402c380 R08: 00007ffdb402c428 R09: 00000000c4000004
R10: 00000000c4000004 R11: 0000000000000246 R12: 00000000c0284b16
R13: 0000000000000003 R14: 00007f97f3cc63a0 R15: 00007f8836200000

Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 80c60a62d39e..7271e3f32d82 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -652,7 +652,7 @@ static void amdgpu_ttm_tt_unpin_userptr(struct ttm_tt *ttm)
 		DMA_BIDIRECTIONAL : DMA_TO_DEVICE;
 
 	/* double check that we don't free the table twice */
-	if (!ttm->sg->sgl)
+	if (!ttm->sg || !ttm->sg->sgl)
 		return;
 
 	/* free the sg table and pages again */
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 046/240] scsi: lpfc: Fix crash when a REG_RPI mailbox fails triggering a LOGO response
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (44 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 045/240] drm/amdgpu: fix NULL pointer dereference Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 047/240] scsi: libfc: Fix a format specifier Greg Kroah-Hartman
                   ` (198 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Justin Tee, James Smart,
	Martin K. Petersen, Sasha Levin

From: James Smart <jsmart2021@gmail.com>

[ Upstream commit fffd18ec6579c2d9c72b212169259062fe747888 ]

Fix a crash caused by a double put on the node when the driver completed an
ACC for an unsolicted abort on the same node.  The second put was executed
by lpfc_nlp_not_used() and is wrong because the completion routine executes
the nlp_put when the iocbq was released.  Additionally, the driver is
issuing a LOGO then immediately calls lpfc_nlp_set_state to put the node
into NPR.  This call does nothing.

Remove the lpfc_nlp_not_used call and additional set_state in the
completion routine.  Remove the lpfc_nlp_set_state post issue_logo.  Isn't
necessary.

Link: https://lore.kernel.org/r/20210412013127.2387-3-jsmart2021@gmail.com
Co-developed-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/scsi/lpfc/lpfc_nportdisc.c | 2 --
 drivers/scsi/lpfc/lpfc_sli.c       | 1 -
 2 files changed, 3 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_nportdisc.c b/drivers/scsi/lpfc/lpfc_nportdisc.c
index fefef2884d59..30b5f65b29d1 100644
--- a/drivers/scsi/lpfc/lpfc_nportdisc.c
+++ b/drivers/scsi/lpfc/lpfc_nportdisc.c
@@ -1606,8 +1606,6 @@ lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
 		ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
 
 		lpfc_issue_els_logo(vport, ndlp, 0);
-		ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
-		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 		return ndlp->nlp_state;
 	}
 
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 08c76c361e8d..0e7915ecb85a 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -15252,7 +15252,6 @@ lpfc_sli4_seq_abort_rsp_cmpl(struct lpfc_hba *phba,
 	if (cmd_iocbq) {
 		ndlp = (struct lpfc_nodelist *)cmd_iocbq->context1;
 		lpfc_nlp_put(ndlp);
-		lpfc_nlp_not_used(ndlp);
 		lpfc_sli_release_iocbq(phba, cmd_iocbq);
 	}
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 047/240] scsi: libfc: Fix a format specifier
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (45 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 046/240] scsi: lpfc: Fix crash when a REG_RPI mailbox fails triggering a LOGO response Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 048/240] ALSA: emu8000: Fix a use after free in snd_emu8000_create_mixer Greg Kroah-Hartman
                   ` (197 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Hannes Reinecke, Bart Van Assche,
	Martin K. Petersen, Sasha Levin

From: Bart Van Assche <bvanassche@acm.org>

[ Upstream commit 90d6697810f06aceea9de71ad836a8c7669789cd ]

Since the 'mfs' member has been declared as 'u32' in include/scsi/libfc.h,
use the %u format specifier instead of %hu. This patch fixes the following
clang compiler warning:

warning: format specifies type
      'unsigned short' but the argument has type 'u32' (aka 'unsigned int')
      [-Wformat]
                             "lport->mfs:%hu\n", mfs, lport->mfs);
                                         ~~~          ^~~~~~~~~~
                                         %u

Link: https://lore.kernel.org/r/20210415220826.29438-8-bvanassche@acm.org
Cc: Hannes Reinecke <hare@suse.de>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/scsi/libfc/fc_lport.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/libfc/fc_lport.c b/drivers/scsi/libfc/fc_lport.c
index ae93f45f9cd8..a36817fb0673 100644
--- a/drivers/scsi/libfc/fc_lport.c
+++ b/drivers/scsi/libfc/fc_lport.c
@@ -1751,7 +1751,7 @@ void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp,
 
 	if (mfs < FC_SP_MIN_MAX_PAYLOAD || mfs > FC_SP_MAX_MAX_PAYLOAD) {
 		FC_LPORT_DBG(lport, "FLOGI bad mfs:%hu response, "
-			     "lport->mfs:%hu\n", mfs, lport->mfs);
+			     "lport->mfs:%u\n", mfs, lport->mfs);
 		fc_lport_error(lport, fp);
 		goto out;
 	}
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 048/240] ALSA: emu8000: Fix a use after free in snd_emu8000_create_mixer
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (46 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 047/240] scsi: libfc: Fix a format specifier Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 049/240] ALSA: sb: Fix two use after free in snd_sb_qsound_build Greg Kroah-Hartman
                   ` (196 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Lv Yunlong, Takashi Iwai

From: Lv Yunlong <lyl2019@mail.ustc.edu.cn>

commit 1c98f574403dbcf2eb832d5535a10d967333ef2d upstream.

Our code analyzer reported a uaf.

In snd_emu8000_create_mixer, the callee snd_ctl_add(..,emu->controls[i])
calls snd_ctl_add_replace(.., kcontrol,..). Inside snd_ctl_add_replace(),
if error happens, kcontrol will be freed by snd_ctl_free_one(kcontrol).
Then emu->controls[i] points to a freed memory, and the execution comes
to __error branch of snd_emu8000_create_mixer. The freed emu->controls[i]
is used in snd_ctl_remove(card, emu->controls[i]).

My patch set emu->controls[i] to NULL if snd_ctl_add() failed to avoid
the uaf.

Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210426131129.4796-1-lyl2019@mail.ustc.edu.cn
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 sound/isa/sb/emu8000.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/sound/isa/sb/emu8000.c
+++ b/sound/isa/sb/emu8000.c
@@ -1042,8 +1042,10 @@ snd_emu8000_create_mixer(struct snd_card
 
 	memset(emu->controls, 0, sizeof(emu->controls));
 	for (i = 0; i < EMU8000_NUM_CONTROLS; i++) {
-		if ((err = snd_ctl_add(card, emu->controls[i] = snd_ctl_new1(mixer_defs[i], emu))) < 0)
+		if ((err = snd_ctl_add(card, emu->controls[i] = snd_ctl_new1(mixer_defs[i], emu))) < 0) {
+			emu->controls[i] = NULL;
 			goto __error;
+		}
 	}
 	return 0;
 



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 049/240] ALSA: sb: Fix two use after free in snd_sb_qsound_build
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (47 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 048/240] ALSA: emu8000: Fix a use after free in snd_emu8000_create_mixer Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 050/240] arm64/vdso: Discard .note.gnu.property sections in vDSO Greg Kroah-Hartman
                   ` (195 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Lv Yunlong, Takashi Iwai

From: Lv Yunlong <lyl2019@mail.ustc.edu.cn>

commit 4fb44dd2c1dda18606348acdfdb97e8759dde9df upstream.

In snd_sb_qsound_build, snd_ctl_add(..,p->qsound_switch...) and
snd_ctl_add(..,p->qsound_space..) are called. But the second
arguments of snd_ctl_add() could be freed via snd_ctl_add_replace()
->snd_ctl_free_one(). After the error code is returned,
snd_sb_qsound_destroy(p) is called in __error branch.

But in snd_sb_qsound_destroy(), the freed p->qsound_switch and
p->qsound_space are still used by snd_ctl_remove().

My patch set p->qsound_switch and p->qsound_space to NULL if
snd_ctl_add() failed to avoid the uaf bugs. But these codes need
to further be improved with the code style.

Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210426145541.8070-1-lyl2019@mail.ustc.edu.cn
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 sound/isa/sb/sb16_csp.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

--- a/sound/isa/sb/sb16_csp.c
+++ b/sound/isa/sb/sb16_csp.c
@@ -1059,10 +1059,14 @@ static int snd_sb_qsound_build(struct sn
 
 	spin_lock_init(&p->q_lock);
 
-	if ((err = snd_ctl_add(card, p->qsound_switch = snd_ctl_new1(&snd_sb_qsound_switch, p))) < 0)
+	if ((err = snd_ctl_add(card, p->qsound_switch = snd_ctl_new1(&snd_sb_qsound_switch, p))) < 0) {
+		p->qsound_switch = NULL;
 		goto __error;
-	if ((err = snd_ctl_add(card, p->qsound_space = snd_ctl_new1(&snd_sb_qsound_space, p))) < 0)
+	}
+	if ((err = snd_ctl_add(card, p->qsound_space = snd_ctl_new1(&snd_sb_qsound_space, p))) < 0) {
+		p->qsound_space = NULL;
 		goto __error;
+	}
 
 	return 0;
 



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 050/240] arm64/vdso: Discard .note.gnu.property sections in vDSO
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (48 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 049/240] ALSA: sb: Fix two use after free in snd_sb_qsound_build Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 051/240] openvswitch: fix stack OOB read while fragmenting IPv4 packets Greg Kroah-Hartman
                   ` (194 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Bill Wendling, Kees Cook,
	Ard Biesheuvel, Catalin Marinas, Sasha Levin

From: Bill Wendling <morbo@google.com>

[ Upstream commit 388708028e6937f3fc5fc19aeeb847f8970f489c ]

The arm64 assembler in binutils 2.32 and above generates a program
property note in a note section, .note.gnu.property, to encode used x86
ISAs and features. But the kernel linker script only contains a single
NOTE segment:

  PHDRS
  {
    text    PT_LOAD    FLAGS(5) FILEHDR PHDRS; /* PF_R|PF_X */
    dynamic PT_DYNAMIC FLAGS(4);               /* PF_R */
    note    PT_NOTE    FLAGS(4);               /* PF_R */
  }

The NOTE segment generated by the vDSO linker script is aligned to 4 bytes.
But the .note.gnu.property section must be aligned to 8 bytes on arm64.

  $ readelf -n vdso64.so

  Displaying notes found in: .note
    Owner                Data size      Description
    Linux                0x00000004     Unknown note type: (0x00000000)
     description data: 06 00 00 00
  readelf: Warning: note with invalid namesz and/or descsz found at offset 0x20
  readelf: Warning:  type: 0x78, namesize: 0x00000100, descsize: 0x756e694c, alignment: 8

Since the note.gnu.property section in the vDSO is not checked by the
dynamic linker, discard the .note.gnu.property sections in the vDSO.

Similar to commit 4caffe6a28d31 ("x86/vdso: Discard .note.gnu.property
sections in vDSO"), but for arm64.

Signed-off-by: Bill Wendling <morbo@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20210423205159.830854-1-morbo@google.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/kernel/vdso/vdso.lds.S | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/kernel/vdso/vdso.lds.S b/arch/arm64/kernel/vdso/vdso.lds.S
index beca249bc2f3..b3e6c4d5b75c 100644
--- a/arch/arm64/kernel/vdso/vdso.lds.S
+++ b/arch/arm64/kernel/vdso/vdso.lds.S
@@ -39,6 +39,13 @@ SECTIONS
 	.gnu.version_d	: { *(.gnu.version_d) }
 	.gnu.version_r	: { *(.gnu.version_r) }
 
+	/*
+	 * Discard .note.gnu.property sections which are unused and have
+	 * different alignment requirement from vDSO note sections.
+	 */
+	/DISCARD/	: {
+		*(.note.GNU-stack .note.gnu.property)
+	}
 	.note		: { *(.note.*) }		:text	:note
 
 	. = ALIGN(16);
@@ -59,7 +66,6 @@ SECTIONS
 	PROVIDE(end = .);
 
 	/DISCARD/	: {
-		*(.note.GNU-stack)
 		*(.data .data.* .gnu.linkonce.d.* .sdata*)
 		*(.bss .sbss .dynbss .dynsbss)
 	}
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 051/240] openvswitch: fix stack OOB read while fragmenting IPv4 packets
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (49 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 050/240] arm64/vdso: Discard .note.gnu.property sections in vDSO Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 052/240] NFSv4: Dont discard segments marked for return in _pnfs_return_layout() Greg Kroah-Hartman
                   ` (193 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Eelco Chaudron, Davide Caratti,
	David S. Miller

From: Davide Caratti <dcaratti@redhat.com>

commit 7c0ea5930c1c211931819d83cfb157bff1539a4c upstream.

running openvswitch on kernels built with KASAN, it's possible to see the
following splat while testing fragmentation of IPv4 packets:

 BUG: KASAN: stack-out-of-bounds in ip_do_fragment+0x1b03/0x1f60
 Read of size 1 at addr ffff888112fc713c by task handler2/1367

 CPU: 0 PID: 1367 Comm: handler2 Not tainted 5.12.0-rc6+ #418
 Hardware name: Red Hat KVM, BIOS 1.11.1-4.module+el8.1.0+4066+0f1aadab 04/01/2014
 Call Trace:
  dump_stack+0x92/0xc1
  print_address_description.constprop.7+0x1a/0x150
  kasan_report.cold.13+0x7f/0x111
  ip_do_fragment+0x1b03/0x1f60
  ovs_fragment+0x5bf/0x840 [openvswitch]
  do_execute_actions+0x1bd5/0x2400 [openvswitch]
  ovs_execute_actions+0xc8/0x3d0 [openvswitch]
  ovs_packet_cmd_execute+0xa39/0x1150 [openvswitch]
  genl_family_rcv_msg_doit.isra.15+0x227/0x2d0
  genl_rcv_msg+0x287/0x490
  netlink_rcv_skb+0x120/0x380
  genl_rcv+0x24/0x40
  netlink_unicast+0x439/0x630
  netlink_sendmsg+0x719/0xbf0
  sock_sendmsg+0xe2/0x110
  ____sys_sendmsg+0x5ba/0x890
  ___sys_sendmsg+0xe9/0x160
  __sys_sendmsg+0xd3/0x170
  do_syscall_64+0x33/0x40
  entry_SYSCALL_64_after_hwframe+0x44/0xae
 RIP: 0033:0x7f957079db07
 Code: c3 66 90 41 54 41 89 d4 55 48 89 f5 53 89 fb 48 83 ec 10 e8 eb ec ff ff 44 89 e2 48 89 ee 89 df 41 89 c0 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 48 89 44 24 08 e8 24 ed ff ff 48
 RSP: 002b:00007f956ce35a50 EFLAGS: 00000293 ORIG_RAX: 000000000000002e
 RAX: ffffffffffffffda RBX: 0000000000000019 RCX: 00007f957079db07
 RDX: 0000000000000000 RSI: 00007f956ce35ae0 RDI: 0000000000000019
 RBP: 00007f956ce35ae0 R08: 0000000000000000 R09: 00007f9558006730
 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
 R13: 00007f956ce37308 R14: 00007f956ce35f80 R15: 00007f956ce35ae0

 The buggy address belongs to the page:
 page:00000000af2a1d93 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x112fc7
 flags: 0x17ffffc0000000()
 raw: 0017ffffc0000000 0000000000000000 dead000000000122 0000000000000000
 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
 page dumped because: kasan: bad access detected

 addr ffff888112fc713c is located in stack of task handler2/1367 at offset 180 in frame:
  ovs_fragment+0x0/0x840 [openvswitch]

 this frame has 2 objects:
  [32, 144) 'ovs_dst'
  [192, 424) 'ovs_rt'

 Memory state around the buggy address:
  ffff888112fc7000: f3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  ffff888112fc7080: 00 f1 f1 f1 f1 00 00 00 00 00 00 00 00 00 00 00
 >ffff888112fc7100: 00 00 00 f2 f2 f2 f2 f2 f2 00 00 00 00 00 00 00
                                         ^
  ffff888112fc7180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  ffff888112fc7200: 00 00 00 00 00 00 f2 f2 f2 00 00 00 00 00 00 00

for IPv4 packets, ovs_fragment() uses a temporary struct dst_entry. Then,
in the following call graph:

  ip_do_fragment()
    ip_skb_dst_mtu()
      ip_dst_mtu_maybe_forward()
        ip_mtu_locked()

the pointer to struct dst_entry is used as pointer to struct rtable: this
turns the access to struct members like rt_mtu_locked into an OOB read in
the stack. Fix this changing the temporary variable used for IPv4 packets
in ovs_fragment(), similarly to what is done for IPv6 few lines below.

Fixes: d52e5a7e7ca4 ("ipv4: lock mtu in fnhe when received PMTU < net.ipv4.route.min_pmt")
Cc: <stable@vger.kernel.org>
Acked-by: Eelco Chaudron <echaudro@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/openvswitch/actions.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/net/openvswitch/actions.c
+++ b/net/openvswitch/actions.c
@@ -710,16 +710,16 @@ static void ovs_fragment(struct net *net
 	}
 
 	if (ethertype == htons(ETH_P_IP)) {
-		struct dst_entry ovs_dst;
+		struct rtable ovs_rt = { 0 };
 		unsigned long orig_dst;
 
 		prepare_frag(vport, skb);
-		dst_init(&ovs_dst, &ovs_dst_ops, NULL, 1,
+		dst_init(&ovs_rt.dst, &ovs_dst_ops, NULL, 1,
 			 DST_OBSOLETE_NONE, DST_NOCOUNT);
-		ovs_dst.dev = vport->dev;
+		ovs_rt.dst.dev = vport->dev;
 
 		orig_dst = skb->_skb_refdst;
-		skb_dst_set_noref(skb, &ovs_dst);
+		skb_dst_set_noref(skb, &ovs_rt.dst);
 		IPCB(skb)->frag_max_size = mru;
 
 		ip_do_fragment(net, skb->sk, skb, ovs_vport_output);



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 052/240] NFSv4: Dont discard segments marked for return in _pnfs_return_layout()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (50 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 051/240] openvswitch: fix stack OOB read while fragmenting IPv4 packets Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 053/240] jffs2: Fix kasan slab-out-of-bounds problem Greg Kroah-Hartman
                   ` (192 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Trond Myklebust

From: Trond Myklebust <trond.myklebust@hammerspace.com>

commit de144ff4234f935bd2150108019b5d87a90a8a96 upstream.

If the pNFS layout segment is marked with the NFS_LSEG_LAYOUTRETURN
flag, then the assumption is that it has some reporting requirement
to perform through a layoutreturn (e.g. flexfiles layout stats or error
information).

Fixes: 6d597e175012 ("pnfs: only tear down lsegs that precede seqid in LAYOUTRETURN args")
Cc: stable@vger.kernel.org
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/nfs/pnfs.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -1088,7 +1088,7 @@ _pnfs_return_layout(struct inode *ino)
 	pnfs_get_layout_hdr(lo);
 	empty = list_empty(&lo->plh_segs);
 	pnfs_clear_layoutcommit(ino, &tmp_list);
-	pnfs_mark_matching_lsegs_invalid(lo, &tmp_list, NULL, 0);
+	pnfs_mark_matching_lsegs_return(lo, &tmp_list, NULL, 0);
 
 	if (NFS_SERVER(ino)->pnfs_curr_ld->return_range) {
 		struct pnfs_layout_range range = {



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 053/240] jffs2: Fix kasan slab-out-of-bounds problem
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (51 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 052/240] NFSv4: Dont discard segments marked for return in _pnfs_return_layout() Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 054/240] powerpc/eeh: Fix EEH handling for hugepages in ioremap space Greg Kroah-Hartman
                   ` (191 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Kunkun Xu, lizhe, Richard Weinberger

From: lizhe <lizhe67@huawei.com>

commit 960b9a8a7676b9054d8b46a2c7db52a0c8766b56 upstream.

KASAN report a slab-out-of-bounds problem. The logs are listed below.
It is because in function jffs2_scan_dirent_node, we alloc "checkedlen+1"
bytes for fd->name and we check crc with length rd->nsize. If checkedlen
is less than rd->nsize, it will cause the slab-out-of-bounds problem.

jffs2: Dirent at *** has zeroes in name. Truncating to %d char
==================================================================
BUG: KASAN: slab-out-of-bounds in crc32_le+0x1ce/0x260 at addr ffff8800842cf2d1
Read of size 1 by task test_JFFS2/915
=============================================================================
BUG kmalloc-64 (Tainted: G    B      O   ): kasan: bad access detected
-----------------------------------------------------------------------------
INFO: Allocated in jffs2_alloc_full_dirent+0x2a/0x40 age=0 cpu=1 pid=915
	___slab_alloc+0x580/0x5f0
	__slab_alloc.isra.24+0x4e/0x64
	__kmalloc+0x170/0x300
	jffs2_alloc_full_dirent+0x2a/0x40
	jffs2_scan_eraseblock+0x1ca4/0x3b64
	jffs2_scan_medium+0x285/0xfe0
	jffs2_do_mount_fs+0x5fb/0x1bbc
	jffs2_do_fill_super+0x245/0x6f0
	jffs2_fill_super+0x287/0x2e0
	mount_mtd_aux.isra.0+0x9a/0x144
	mount_mtd+0x222/0x2f0
	jffs2_mount+0x41/0x60
	mount_fs+0x63/0x230
	vfs_kern_mount.part.6+0x6c/0x1f4
	do_mount+0xae8/0x1940
	SyS_mount+0x105/0x1d0
INFO: Freed in jffs2_free_full_dirent+0x22/0x40 age=27 cpu=1 pid=915
	__slab_free+0x372/0x4e4
	kfree+0x1d4/0x20c
	jffs2_free_full_dirent+0x22/0x40
	jffs2_build_remove_unlinked_inode+0x17a/0x1e4
	jffs2_do_mount_fs+0x1646/0x1bbc
	jffs2_do_fill_super+0x245/0x6f0
	jffs2_fill_super+0x287/0x2e0
	mount_mtd_aux.isra.0+0x9a/0x144
	mount_mtd+0x222/0x2f0
	jffs2_mount+0x41/0x60
	mount_fs+0x63/0x230
	vfs_kern_mount.part.6+0x6c/0x1f4
	do_mount+0xae8/0x1940
	SyS_mount+0x105/0x1d0
	entry_SYSCALL_64_fastpath+0x1e/0x97
Call Trace:
 [<ffffffff815befef>] dump_stack+0x59/0x7e
 [<ffffffff812d1d65>] print_trailer+0x125/0x1b0
 [<ffffffff812d82c8>] object_err+0x34/0x40
 [<ffffffff812dadef>] kasan_report.part.1+0x21f/0x534
 [<ffffffff81132401>] ? vprintk+0x2d/0x40
 [<ffffffff815f1ee2>] ? crc32_le+0x1ce/0x260
 [<ffffffff812db41a>] kasan_report+0x26/0x30
 [<ffffffff812d9fc1>] __asan_load1+0x3d/0x50
 [<ffffffff815f1ee2>] crc32_le+0x1ce/0x260
 [<ffffffff814764ae>] ? jffs2_alloc_full_dirent+0x2a/0x40
 [<ffffffff81485cec>] jffs2_scan_eraseblock+0x1d0c/0x3b64
 [<ffffffff81488813>] ? jffs2_scan_medium+0xccf/0xfe0
 [<ffffffff81483fe0>] ? jffs2_scan_make_ino_cache+0x14c/0x14c
 [<ffffffff812da3e9>] ? kasan_unpoison_shadow+0x35/0x50
 [<ffffffff812da3e9>] ? kasan_unpoison_shadow+0x35/0x50
 [<ffffffff812da462>] ? kasan_kmalloc+0x5e/0x70
 [<ffffffff812d5d90>] ? kmem_cache_alloc_trace+0x10c/0x2cc
 [<ffffffff818169fb>] ? mtd_point+0xf7/0x130
 [<ffffffff81487dc9>] jffs2_scan_medium+0x285/0xfe0
 [<ffffffff81487b44>] ? jffs2_scan_eraseblock+0x3b64/0x3b64
 [<ffffffff812da3e9>] ? kasan_unpoison_shadow+0x35/0x50
 [<ffffffff812da3e9>] ? kasan_unpoison_shadow+0x35/0x50
 [<ffffffff812da462>] ? kasan_kmalloc+0x5e/0x70
 [<ffffffff812d57df>] ? __kmalloc+0x12b/0x300
 [<ffffffff812da462>] ? kasan_kmalloc+0x5e/0x70
 [<ffffffff814a2753>] ? jffs2_sum_init+0x9f/0x240
 [<ffffffff8148b2ff>] jffs2_do_mount_fs+0x5fb/0x1bbc
 [<ffffffff8148ad04>] ? jffs2_del_noinode_dirent+0x640/0x640
 [<ffffffff812da462>] ? kasan_kmalloc+0x5e/0x70
 [<ffffffff81127c5b>] ? __init_rwsem+0x97/0xac
 [<ffffffff81492349>] jffs2_do_fill_super+0x245/0x6f0
 [<ffffffff81493c5b>] jffs2_fill_super+0x287/0x2e0
 [<ffffffff814939d4>] ? jffs2_parse_options+0x594/0x594
 [<ffffffff81819bea>] mount_mtd_aux.isra.0+0x9a/0x144
 [<ffffffff81819eb6>] mount_mtd+0x222/0x2f0
 [<ffffffff814939d4>] ? jffs2_parse_options+0x594/0x594
 [<ffffffff81819c94>] ? mount_mtd_aux.isra.0+0x144/0x144
 [<ffffffff81258757>] ? free_pages+0x13/0x1c
 [<ffffffff814fa0ac>] ? selinux_sb_copy_data+0x278/0x2e0
 [<ffffffff81492b35>] jffs2_mount+0x41/0x60
 [<ffffffff81302fb7>] mount_fs+0x63/0x230
 [<ffffffff8133755f>] ? alloc_vfsmnt+0x32f/0x3b0
 [<ffffffff81337f2c>] vfs_kern_mount.part.6+0x6c/0x1f4
 [<ffffffff8133ceec>] do_mount+0xae8/0x1940
 [<ffffffff811b94e0>] ? audit_filter_rules.constprop.6+0x1d10/0x1d10
 [<ffffffff8133c404>] ? copy_mount_string+0x40/0x40
 [<ffffffff812cbf78>] ? alloc_pages_current+0xa4/0x1bc
 [<ffffffff81253a89>] ? __get_free_pages+0x25/0x50
 [<ffffffff81338993>] ? copy_mount_options.part.17+0x183/0x264
 [<ffffffff8133e3a9>] SyS_mount+0x105/0x1d0
 [<ffffffff8133e2a4>] ? copy_mnt_ns+0x560/0x560
 [<ffffffff810e8391>] ? msa_space_switch_handler+0x13d/0x190
 [<ffffffff81be184a>] entry_SYSCALL_64_fastpath+0x1e/0x97
 [<ffffffff810e9274>] ? msa_space_switch+0xb0/0xe0
Memory state around the buggy address:
 ffff8800842cf180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8800842cf200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8800842cf280: fc fc fc fc fc fc 00 00 00 00 01 fc fc fc fc fc
                                                 ^
 ffff8800842cf300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8800842cf380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================

Cc: stable@vger.kernel.org
Reported-by: Kunkun Xu <xukunkun1@huawei.com>
Signed-off-by: lizhe <lizhe67@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/jffs2/scan.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/jffs2/scan.c
+++ b/fs/jffs2/scan.c
@@ -1075,7 +1075,7 @@ static int jffs2_scan_dirent_node(struct
 	memcpy(&fd->name, rd->name, checkedlen);
 	fd->name[checkedlen] = 0;
 
-	crc = crc32(0, fd->name, rd->nsize);
+	crc = crc32(0, fd->name, checkedlen);
 	if (crc != je32_to_cpu(rd->name_crc)) {
 		pr_notice("%s(): Name CRC failed on node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
 			  __func__, ofs, je32_to_cpu(rd->name_crc), crc);



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 054/240] powerpc/eeh: Fix EEH handling for hugepages in ioremap space.
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (52 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 053/240] jffs2: Fix kasan slab-out-of-bounds problem Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 055/240] powerpc: fix EDEADLOCK redefinition error in uapi/asm/errno.h Greg Kroah-Hartman
                   ` (190 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Dominic DeMarco, Mahesh Salgaonkar,
	Aneesh Kumar K.V, Michael Ellerman

From: Mahesh Salgaonkar <mahesh@linux.ibm.com>

commit 5ae5bc12d0728db60a0aa9b62160ffc038875f1a upstream.

During the EEH MMIO error checking, the current implementation fails to map
the (virtual) MMIO address back to the pci device on radix with hugepage
mappings for I/O. This results into failure to dispatch EEH event with no
recovery even when EEH capability has been enabled on the device.

eeh_check_failure(token)		# token = virtual MMIO address
  addr = eeh_token_to_phys(token);
  edev = eeh_addr_cache_get_dev(addr);
  if (!edev)
	return 0;
  eeh_dev_check_failure(edev);	<= Dispatch the EEH event

In case of hugepage mappings, eeh_token_to_phys() has a bug in virt -> phys
translation that results in wrong physical address, which is then passed to
eeh_addr_cache_get_dev() to match it against cached pci I/O address ranges
to get to a PCI device. Hence, it fails to find a match and the EEH event
never gets dispatched leaving the device in failed state.

The commit 33439620680be ("powerpc/eeh: Handle hugepages in ioremap space")
introduced following logic to translate virt to phys for hugepage mappings:

eeh_token_to_phys():
+	pa = pte_pfn(*ptep);
+
+	/* On radix we can do hugepage mappings for io, so handle that */
+       if (hugepage_shift) {
+               pa <<= hugepage_shift;			<= This is wrong
+               pa |= token & ((1ul << hugepage_shift) - 1);
+       }

This patch fixes the virt -> phys translation in eeh_token_to_phys()
function.

  $ cat /sys/kernel/debug/powerpc/eeh_address_cache
  mem addr range [0x0000040080000000-0x00000400807fffff]: 0030:01:00.1
  mem addr range [0x0000040080800000-0x0000040080ffffff]: 0030:01:00.1
  mem addr range [0x0000040081000000-0x00000400817fffff]: 0030:01:00.0
  mem addr range [0x0000040081800000-0x0000040081ffffff]: 0030:01:00.0
  mem addr range [0x0000040082000000-0x000004008207ffff]: 0030:01:00.1
  mem addr range [0x0000040082080000-0x00000400820fffff]: 0030:01:00.0
  mem addr range [0x0000040082100000-0x000004008210ffff]: 0030:01:00.1
  mem addr range [0x0000040082110000-0x000004008211ffff]: 0030:01:00.0

Above is the list of cached io address ranges of pci 0030:01:00.<fn>.

Before this patch:

Tracing 'arg1' of function eeh_addr_cache_get_dev() during error injection
clearly shows that 'addr=' contains wrong physical address:

   kworker/u16:0-7       [001] ....   108.883775: eeh_addr_cache_get_dev:
	   (eeh_addr_cache_get_dev+0xc/0xf0) addr=0x80103000a510

dmesg shows no EEH recovery messages:

  [  108.563768] bnx2x: [bnx2x_timer:5801(eth2)]MFW seems hanged: drv_pulse (0x9ae) != mcp_pulse (0x7fff)
  [  108.563788] bnx2x: [bnx2x_hw_stats_update:870(eth2)]NIG timer max (4294967295)
  [  108.883788] bnx2x: [bnx2x_acquire_hw_lock:2013(eth1)]lock_status 0xffffffff  resource_bit 0x1
  [  108.884407] bnx2x 0030:01:00.0 eth1: MDC/MDIO access timeout
  [  108.884976] bnx2x 0030:01:00.0 eth1: MDC/MDIO access timeout
  <..>

After this patch:

eeh_addr_cache_get_dev() trace shows correct physical address:

  <idle>-0       [001] ..s.  1043.123828: eeh_addr_cache_get_dev:
	  (eeh_addr_cache_get_dev+0xc/0xf0) addr=0x40080bc7cd8

dmesg logs shows EEH recovery getting triggerred:

  [  964.323980] bnx2x: [bnx2x_timer:5801(eth2)]MFW seems hanged: drv_pulse (0x746f) != mcp_pulse (0x7fff)
  [  964.323991] EEH: Recovering PHB#30-PE#10000
  [  964.324002] EEH: PE location: N/A, PHB location: N/A
  [  964.324006] EEH: Frozen PHB#30-PE#10000 detected
  <..>

Fixes: 33439620680b ("powerpc/eeh: Handle hugepages in ioremap space")
Cc: stable@vger.kernel.org # v5.3+
Reported-by: Dominic DeMarco <ddemarc@us.ibm.com>
Signed-off-by: Mahesh Salgaonkar <mahesh@linux.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/161821396263.48361.2796709239866588652.stgit@jupiter
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/powerpc/kernel/eeh.c |   11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

--- a/arch/powerpc/kernel/eeh.c
+++ b/arch/powerpc/kernel/eeh.c
@@ -366,14 +366,11 @@ static inline unsigned long eeh_token_to
 	pa = pte_pfn(*ptep);
 
 	/* On radix we can do hugepage mappings for io, so handle that */
-	if (hugepage_shift) {
-		pa <<= hugepage_shift;
-		pa |= token & ((1ul << hugepage_shift) - 1);
-	} else {
-		pa <<= PAGE_SHIFT;
-		pa |= token & (PAGE_SIZE - 1);
-	}
+	if (!hugepage_shift)
+		hugepage_shift = PAGE_SHIFT;
 
+	pa <<= PAGE_SHIFT;
+	pa |= token & ((1ul << hugepage_shift) - 1);
 	return pa;
 }
 



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 055/240] powerpc: fix EDEADLOCK redefinition error in uapi/asm/errno.h
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (53 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 054/240] powerpc/eeh: Fix EEH handling for hugepages in ioremap space Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 056/240] jffs2: check the validity of dstlen in jffs2_zlib_compress() Greg Kroah-Hartman
                   ` (189 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Rosen Penev, Tony Ambardar, Michael Ellerman

From: Tony Ambardar <tony.ambardar@gmail.com>

commit 7de21e679e6a789f3729e8402bc440b623a28eae upstream.

A few archs like powerpc have different errno.h values for macros
EDEADLOCK and EDEADLK. In code including both libc and linux versions of
errno.h, this can result in multiple definitions of EDEADLOCK in the
include chain. Definitions to the same value (e.g. seen with mips) do
not raise warnings, but on powerpc there are redefinitions changing the
value, which raise warnings and errors (if using "-Werror").

Guard against these redefinitions to avoid build errors like the following,
first seen cross-compiling libbpf v5.8.9 for powerpc using GCC 8.4.0 with
musl 1.1.24:

  In file included from ../../arch/powerpc/include/uapi/asm/errno.h:5,
                   from ../../include/linux/err.h:8,
                   from libbpf.c:29:
  ../../include/uapi/asm-generic/errno.h:40: error: "EDEADLOCK" redefined [-Werror]
   #define EDEADLOCK EDEADLK

  In file included from toolchain-powerpc_8540_gcc-8.4.0_musl/include/errno.h:10,
                   from libbpf.c:26:
  toolchain-powerpc_8540_gcc-8.4.0_musl/include/bits/errno.h:58: note: this is the location of the previous definition
   #define EDEADLOCK       58

  cc1: all warnings being treated as errors

Cc: Stable <stable@vger.kernel.org>
Reported-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: Tony Ambardar <Tony.Ambardar@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200917135437.1238787-1-Tony.Ambardar@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/powerpc/include/uapi/asm/errno.h |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/powerpc/include/uapi/asm/errno.h
+++ b/arch/powerpc/include/uapi/asm/errno.h
@@ -1,6 +1,7 @@
 #ifndef _ASM_POWERPC_ERRNO_H
 #define _ASM_POWERPC_ERRNO_H
 
+#undef	EDEADLOCK
 #include <asm-generic/errno.h>
 
 #undef	EDEADLOCK



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 056/240] jffs2: check the validity of dstlen in jffs2_zlib_compress()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (54 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 055/240] powerpc: fix EDEADLOCK redefinition error in uapi/asm/errno.h Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 057/240] Revert 337f13046ff0 ("futex: Allow FUTEX_CLOCK_REALTIME with FUTEX_WAIT op") Greg Kroah-Hartman
                   ` (188 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Yang Yang, Joel Stanley, Richard Weinberger

From: Yang Yang <yang.yang29@zte.com.cn>

commit 90ada91f4610c5ef11bc52576516d96c496fc3f1 upstream.

KASAN reports a BUG when download file in jffs2 filesystem.It is
because when dstlen == 1, cpage_out will write array out of bounds.
Actually, data will not be compressed in jffs2_zlib_compress() if
data's length less than 4.

[  393.799778] BUG: KASAN: slab-out-of-bounds in jffs2_rtime_compress+0x214/0x2f0 at addr ffff800062e3b281
[  393.809166] Write of size 1 by task tftp/2918
[  393.813526] CPU: 3 PID: 2918 Comm: tftp Tainted: G    B           4.9.115-rt93-EMBSYS-CGEL-6.1.R6-dirty #1
[  393.823173] Hardware name: LS1043A RDB Board (DT)
[  393.827870] Call trace:
[  393.830322] [<ffff20000808c700>] dump_backtrace+0x0/0x2f0
[  393.835721] [<ffff20000808ca04>] show_stack+0x14/0x20
[  393.840774] [<ffff2000086ef700>] dump_stack+0x90/0xb0
[  393.845829] [<ffff20000827b19c>] kasan_object_err+0x24/0x80
[  393.851402] [<ffff20000827b404>] kasan_report_error+0x1b4/0x4d8
[  393.857323] [<ffff20000827bae8>] kasan_report+0x38/0x40
[  393.862548] [<ffff200008279d44>] __asan_store1+0x4c/0x58
[  393.867859] [<ffff2000084ce2ec>] jffs2_rtime_compress+0x214/0x2f0
[  393.873955] [<ffff2000084bb3b0>] jffs2_selected_compress+0x178/0x2a0
[  393.880308] [<ffff2000084bb530>] jffs2_compress+0x58/0x478
[  393.885796] [<ffff2000084c5b34>] jffs2_write_inode_range+0x13c/0x450
[  393.892150] [<ffff2000084be0b8>] jffs2_write_end+0x2a8/0x4a0
[  393.897811] [<ffff2000081f3008>] generic_perform_write+0x1c0/0x280
[  393.903990] [<ffff2000081f5074>] __generic_file_write_iter+0x1c4/0x228
[  393.910517] [<ffff2000081f5210>] generic_file_write_iter+0x138/0x288
[  393.916870] [<ffff20000829ec1c>] __vfs_write+0x1b4/0x238
[  393.922181] [<ffff20000829ff00>] vfs_write+0xd0/0x238
[  393.927232] [<ffff2000082a1ba8>] SyS_write+0xa0/0x110
[  393.932283] [<ffff20000808429c>] __sys_trace_return+0x0/0x4
[  393.937851] Object at ffff800062e3b280, in cache kmalloc-64 size: 64
[  393.944197] Allocated:
[  393.946552] PID = 2918
[  393.948913]  save_stack_trace_tsk+0x0/0x220
[  393.953096]  save_stack_trace+0x18/0x20
[  393.956932]  kasan_kmalloc+0xd8/0x188
[  393.960594]  __kmalloc+0x144/0x238
[  393.963994]  jffs2_selected_compress+0x48/0x2a0
[  393.968524]  jffs2_compress+0x58/0x478
[  393.972273]  jffs2_write_inode_range+0x13c/0x450
[  393.976889]  jffs2_write_end+0x2a8/0x4a0
[  393.980810]  generic_perform_write+0x1c0/0x280
[  393.985251]  __generic_file_write_iter+0x1c4/0x228
[  393.990040]  generic_file_write_iter+0x138/0x288
[  393.994655]  __vfs_write+0x1b4/0x238
[  393.998228]  vfs_write+0xd0/0x238
[  394.001543]  SyS_write+0xa0/0x110
[  394.004856]  __sys_trace_return+0x0/0x4
[  394.008684] Freed:
[  394.010691] PID = 2918
[  394.013051]  save_stack_trace_tsk+0x0/0x220
[  394.017233]  save_stack_trace+0x18/0x20
[  394.021069]  kasan_slab_free+0x88/0x188
[  394.024902]  kfree+0x6c/0x1d8
[  394.027868]  jffs2_sum_write_sumnode+0x2c4/0x880
[  394.032486]  jffs2_do_reserve_space+0x198/0x598
[  394.037016]  jffs2_reserve_space+0x3f8/0x4d8
[  394.041286]  jffs2_write_inode_range+0xf0/0x450
[  394.045816]  jffs2_write_end+0x2a8/0x4a0
[  394.049737]  generic_perform_write+0x1c0/0x280
[  394.054179]  __generic_file_write_iter+0x1c4/0x228
[  394.058968]  generic_file_write_iter+0x138/0x288
[  394.063583]  __vfs_write+0x1b4/0x238
[  394.067157]  vfs_write+0xd0/0x238
[  394.070470]  SyS_write+0xa0/0x110
[  394.073783]  __sys_trace_return+0x0/0x4
[  394.077612] Memory state around the buggy address:
[  394.082404]  ffff800062e3b180: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
[  394.089623]  ffff800062e3b200: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
[  394.096842] >ffff800062e3b280: 01 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[  394.104056]                    ^
[  394.107283]  ffff800062e3b300: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[  394.114502]  ffff800062e3b380: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[  394.121718] ==================================================================

Signed-off-by: Yang Yang <yang.yang29@zte.com.cn>
Cc: Joel Stanley <joel@jms.id.au>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/jffs2/compr_rtime.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/fs/jffs2/compr_rtime.c
+++ b/fs/jffs2/compr_rtime.c
@@ -37,6 +37,9 @@ static int jffs2_rtime_compress(unsigned
 	int outpos = 0;
 	int pos=0;
 
+	if (*dstlen <= 3)
+		return -1;
+
 	memset(positions,0,sizeof(positions));
 
 	while (pos < (*sourcelen) && outpos <= (*dstlen)-2) {



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 057/240] Revert 337f13046ff0 ("futex: Allow FUTEX_CLOCK_REALTIME with FUTEX_WAIT op")
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (55 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 056/240] jffs2: check the validity of dstlen in jffs2_zlib_compress() Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 058/240] ftrace: Handle commands when closing set_ftrace_filter file Greg Kroah-Hartman
                   ` (187 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Thomas Gleixner, Peter Zijlstra (Intel)

From: Thomas Gleixner <tglx@linutronix.de>

commit 4fbf5d6837bf81fd7a27d771358f4ee6c4f243f8 upstream.

The FUTEX_WAIT operand has historically a relative timeout which means that
the clock id is irrelevant as relative timeouts on CLOCK_REALTIME are not
subject to wall clock changes and therefore are mapped by the kernel to
CLOCK_MONOTONIC for simplicity.

If a caller would set FUTEX_CLOCK_REALTIME for FUTEX_WAIT the timeout is
still treated relative vs. CLOCK_MONOTONIC and then the wait arms that
timeout based on CLOCK_REALTIME which is broken and obviously has never
been used or even tested.

Reject any attempt to use FUTEX_CLOCK_REALTIME with FUTEX_WAIT again.

The desired functionality can be achieved with FUTEX_WAIT_BITSET and a
FUTEX_BITSET_MATCH_ANY argument.

Fixes: 337f13046ff0 ("futex: Allow FUTEX_CLOCK_REALTIME with FUTEX_WAIT op")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20210422194704.834797921@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 kernel/futex.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -3860,8 +3860,7 @@ long do_futex(u32 __user *uaddr, int op,
 
 	if (op & FUTEX_CLOCK_REALTIME) {
 		flags |= FLAGS_CLOCKRT;
-		if (cmd != FUTEX_WAIT && cmd != FUTEX_WAIT_BITSET && \
-		    cmd != FUTEX_WAIT_REQUEUE_PI)
+		if (cmd != FUTEX_WAIT_BITSET &&	cmd != FUTEX_WAIT_REQUEUE_PI)
 			return -ENOSYS;
 	}
 



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 058/240] ftrace: Handle commands when closing set_ftrace_filter file
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (56 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 057/240] Revert 337f13046ff0 ("futex: Allow FUTEX_CLOCK_REALTIME with FUTEX_WAIT op") Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 059/240] ext4: fix check to prevent false positive report of incorrect used inodes Greg Kroah-Hartman
                   ` (186 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Steven Rostedt (VMware)

From: Steven Rostedt (VMware) <rostedt@goodmis.org>

commit 8c9af478c06bb1ab1422f90d8ecbc53defd44bc3 upstream.

 # echo switch_mm:traceoff > /sys/kernel/tracing/set_ftrace_filter

will cause switch_mm to stop tracing by the traceoff command.

 # echo -n switch_mm:traceoff > /sys/kernel/tracing/set_ftrace_filter

does nothing.

The reason is that the parsing in the write function only processes
commands if it finished parsing (there is white space written after the
command). That's to handle:

 write(fd, "switch_mm:", 10);
 write(fd, "traceoff", 8);

cases, where the command is broken over multiple writes.

The problem is if the file descriptor is closed, then the write call is
not processed, and the command needs to be processed in the release code.
The release code can handle matching of functions, but does not handle
commands.

Cc: stable@vger.kernel.org
Fixes: eda1e32855656 ("tracing: handle broken names in ftrace filter")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 kernel/trace/ftrace.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -4486,8 +4486,11 @@ int ftrace_regex_release(struct inode *i
 
 	parser = &iter->parser;
 	if (trace_parser_loaded(parser)) {
+		int enable = !(iter->flags & FTRACE_ITER_NOTRACE);
+
 		parser->buffer[parser->idx] = 0;
-		ftrace_match_records(iter->hash, parser->buffer, parser->idx);
+		ftrace_process_regex(iter->hash, parser->buffer,
+				     parser->idx, enable);
 	}
 
 	trace_parser_put(parser);



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 059/240] ext4: fix check to prevent false positive report of incorrect used inodes
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (57 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 058/240] ftrace: Handle commands when closing set_ftrace_filter file Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 060/240] ext4: fix error code in ext4_commit_super Greg Kroah-Hartman
                   ` (185 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, stable, Zhang Yi, Jan Kara, Theodore Tso

From: Zhang Yi <yi.zhang@huawei.com>

commit a149d2a5cabbf6507a7832a1c4fd2593c55fd450 upstream.

Commit <50122847007> ("ext4: fix check to prevent initializing reserved
inodes") check the block group zero and prevent initializing reserved
inodes. But in some special cases, the reserved inode may not all belong
to the group zero, it may exist into the second group if we format
filesystem below.

  mkfs.ext4 -b 4096 -g 8192 -N 1024 -I 4096 /dev/sda

So, it will end up triggering a false positive report of a corrupted
file system. This patch fix it by avoid check reserved inodes if no free
inode blocks will be zeroed.

Cc: stable@kernel.org
Fixes: 50122847007 ("ext4: fix check to prevent initializing reserved inodes")
Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Suggested-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20210331121516.2243099-1-yi.zhang@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/ext4/ialloc.c |   48 ++++++++++++++++++++++++++++++++----------------
 1 file changed, 32 insertions(+), 16 deletions(-)

--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -1286,6 +1286,7 @@ int ext4_init_inode_table(struct super_b
 	handle_t *handle;
 	ext4_fsblk_t blk;
 	int num, ret = 0, used_blks = 0;
+	unsigned long used_inos = 0;
 
 	/* This should not happen, but just to be sure check this */
 	if (sb->s_flags & MS_RDONLY) {
@@ -1316,22 +1317,37 @@ int ext4_init_inode_table(struct super_b
 	 * used inodes so we need to skip blocks with used inodes in
 	 * inode table.
 	 */
-	if (!(gdp->bg_flags & cpu_to_le16(EXT4_BG_INODE_UNINIT)))
-		used_blks = DIV_ROUND_UP((EXT4_INODES_PER_GROUP(sb) -
-			    ext4_itable_unused_count(sb, gdp)),
-			    sbi->s_inodes_per_block);
-
-	if ((used_blks < 0) || (used_blks > sbi->s_itb_per_group) ||
-	    ((group == 0) && ((EXT4_INODES_PER_GROUP(sb) -
-			       ext4_itable_unused_count(sb, gdp)) <
-			      EXT4_FIRST_INO(sb)))) {
-		ext4_error(sb, "Something is wrong with group %u: "
-			   "used itable blocks: %d; "
-			   "itable unused count: %u",
-			   group, used_blks,
-			   ext4_itable_unused_count(sb, gdp));
-		ret = 1;
-		goto err_out;
+	if (!(gdp->bg_flags & cpu_to_le16(EXT4_BG_INODE_UNINIT))) {
+		used_inos = EXT4_INODES_PER_GROUP(sb) -
+			    ext4_itable_unused_count(sb, gdp);
+		used_blks = DIV_ROUND_UP(used_inos, sbi->s_inodes_per_block);
+
+		/* Bogus inode unused count? */
+		if (used_blks < 0 || used_blks > sbi->s_itb_per_group) {
+			ext4_error(sb, "Something is wrong with group %u: "
+				   "used itable blocks: %d; "
+				   "itable unused count: %u",
+				   group, used_blks,
+				   ext4_itable_unused_count(sb, gdp));
+			ret = 1;
+			goto err_out;
+		}
+
+		used_inos += group * EXT4_INODES_PER_GROUP(sb);
+		/*
+		 * Are there some uninitialized inodes in the inode table
+		 * before the first normal inode?
+		 */
+		if ((used_blks != sbi->s_itb_per_group) &&
+		     (used_inos < EXT4_FIRST_INO(sb))) {
+			ext4_error(sb, "Something is wrong with group %u: "
+				   "itable unused count: %u; "
+				   "itables initialized count: %ld",
+				   group, ext4_itable_unused_count(sb, gdp),
+				   used_inos);
+			ret = 1;
+			goto err_out;
+		}
 	}
 
 	blk = ext4_inode_table(sb, gdp) + used_blks;



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 060/240] ext4: fix error code in ext4_commit_super
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (58 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 059/240] ext4: fix check to prevent false positive report of incorrect used inodes Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 061/240] media: dvbdev: Fix memory leak in dvb_media_device_free() Greg Kroah-Hartman
                   ` (184 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, stable, Fengnan Chang,
	Andreas Dilger, Theodore Tso

From: Fengnan Chang <changfengnan@vivo.com>

commit f88f1466e2a2e5ca17dfada436d3efa1b03a3972 upstream.

We should set the error code when ext4_commit_super check argument failed.
Found in code review.
Fixes: c4be0c1dc4cdc ("filesystem freeze: add error handling of write_super_lockfs/unlockfs").

Cc: stable@kernel.org
Signed-off-by: Fengnan Chang <changfengnan@vivo.com>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Link: https://lore.kernel.org/r/20210402101631.561-1-changfengnan@vivo.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/ext4/super.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -4678,8 +4678,10 @@ static int ext4_commit_super(struct supe
 	struct buffer_head *sbh = EXT4_SB(sb)->s_sbh;
 	int error = 0;
 
-	if (!sbh || block_device_ejected(sb))
-		return error;
+	if (!sbh)
+		return -EINVAL;
+	if (block_device_ejected(sb))
+		return -ENODEV;
 
 	/*
 	 * If the file system is mounted read-only, don't update the



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 061/240] media: dvbdev: Fix memory leak in dvb_media_device_free()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (59 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 060/240] ext4: fix error code in ext4_commit_super Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 062/240] usb: gadget: dummy_hcd: fix gpf in gadget_setup Greg Kroah-Hartman
                   ` (183 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, syzbot+7f09440acc069a0d38ac,
	Peilin Ye, Mauro Carvalho Chehab

From: Peilin Ye <yepeilin.cs@gmail.com>

commit bf9a40ae8d722f281a2721779595d6df1c33a0bf upstream.

dvb_media_device_free() is leaking memory. Free `dvbdev->adapter->conn`
before setting it to NULL, as documented in include/media/media-device.h:
"The media_entity instance itself must be freed explicitly by the driver
if required."

Link: https://syzkaller.appspot.com/bug?id=9bbe4b842c98f0ed05c5eed77a226e9de33bf298

Link: https://lore.kernel.org/linux-media/20201211083039.521617-1-yepeilin.cs@gmail.com
Cc: stable@vger.kernel.org
Fixes: 0230d60e4661 ("[media] dvbdev: Add RF connector if needed")
Reported-by: syzbot+7f09440acc069a0d38ac@syzkaller.appspotmail.com
Signed-off-by: Peilin Ye <yepeilin.cs@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/media/dvb-core/dvbdev.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/media/dvb-core/dvbdev.c
+++ b/drivers/media/dvb-core/dvbdev.c
@@ -216,6 +216,7 @@ static void dvb_media_device_free(struct
 
 	if (dvbdev->adapter->conn) {
 		media_device_unregister_entity(dvbdev->adapter->conn);
+		kfree(dvbdev->adapter->conn);
 		dvbdev->adapter->conn = NULL;
 		kfree(dvbdev->adapter->conn_pads);
 		dvbdev->adapter->conn_pads = NULL;



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 062/240] usb: gadget: dummy_hcd: fix gpf in gadget_setup
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (60 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 061/240] media: dvbdev: Fix memory leak in dvb_media_device_free() Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 063/240] usb: gadget: Fix double free of device descriptor pointers Greg Kroah-Hartman
                   ` (182 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, syzbot+eb4674092e6cc8d9e0bd,
	Alan Stern, Anirudh Rayabharam

From: Anirudh Rayabharam <mail@anirudhrb.com>

commit 4a5d797a9f9c4f18585544237216d7812686a71f upstream.

Fix a general protection fault reported by syzbot due to a race between
gadget_setup() and gadget_unbind() in raw_gadget.

The gadget core is supposed to guarantee that there won't be any more
callbacks to the gadget driver once the driver's unbind routine is
called. That guarantee is enforced in usb_gadget_remove_driver as
follows:

        usb_gadget_disconnect(udc->gadget);
        if (udc->gadget->irq)
                synchronize_irq(udc->gadget->irq);
        udc->driver->unbind(udc->gadget);
        usb_gadget_udc_stop(udc);

usb_gadget_disconnect turns off the pullup resistor, telling the host
that the gadget is no longer connected and preventing the transmission
of any more USB packets. Any packets that have already been received
are sure to processed by the UDC driver's interrupt handler by the time
synchronize_irq returns.

But this doesn't work with dummy_hcd, because dummy_hcd doesn't use
interrupts; it uses a timer instead. It does have code to emulate the
effect of synchronize_irq, but that code doesn't get invoked at the
right time -- it currently runs in usb_gadget_udc_stop, after the unbind
callback instead of before. Indeed, there's no way for
usb_gadget_remove_driver to invoke this code before the unbind callback.

To fix this, move the synchronize_irq() emulation code to dummy_pullup
so that it runs before unbind. Also, add a comment explaining why it is
necessary to have it there.

Reported-by: syzbot+eb4674092e6cc8d9e0bd@syzkaller.appspotmail.com
Suggested-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Anirudh Rayabharam <mail@anirudhrb.com>
Link: https://lore.kernel.org/r/20210419033713.3021-1-mail@anirudhrb.com
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/usb/gadget/udc/dummy_hcd.c |   23 +++++++++++++++--------
 1 file changed, 15 insertions(+), 8 deletions(-)

--- a/drivers/usb/gadget/udc/dummy_hcd.c
+++ b/drivers/usb/gadget/udc/dummy_hcd.c
@@ -918,6 +918,21 @@ static int dummy_pullup(struct usb_gadge
 	spin_lock_irqsave(&dum->lock, flags);
 	dum->pullup = (value != 0);
 	set_link_state(dum_hcd);
+	if (value == 0) {
+		/*
+		 * Emulate synchronize_irq(): wait for callbacks to finish.
+		 * This seems to be the best place to emulate the call to
+		 * synchronize_irq() that's in usb_gadget_remove_driver().
+		 * Doing it in dummy_udc_stop() would be too late since it
+		 * is called after the unbind callback and unbind shouldn't
+		 * be invoked until all the other callbacks are finished.
+		 */
+		while (dum->callback_usage > 0) {
+			spin_unlock_irqrestore(&dum->lock, flags);
+			usleep_range(1000, 2000);
+			spin_lock_irqsave(&dum->lock, flags);
+		}
+	}
 	spin_unlock_irqrestore(&dum->lock, flags);
 
 	usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd));
@@ -998,14 +1013,6 @@ static int dummy_udc_stop(struct usb_gad
 	spin_lock_irq(&dum->lock);
 	dum->ints_enabled = 0;
 	stop_activity(dum);
-
-	/* emulate synchronize_irq(): wait for callbacks to finish */
-	while (dum->callback_usage > 0) {
-		spin_unlock_irq(&dum->lock);
-		usleep_range(1000, 2000);
-		spin_lock_irq(&dum->lock);
-	}
-
 	dum->driver = NULL;
 	spin_unlock_irq(&dum->lock);
 



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 063/240] usb: gadget: Fix double free of device descriptor pointers
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (61 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 062/240] usb: gadget: dummy_hcd: fix gpf in gadget_setup Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 064/240] usb: gadget/function/f_fs string table fix for multiple languages Greg Kroah-Hartman
                   ` (181 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Peter Chen, Hemant Kumar, Wesley Cheng

From: Hemant Kumar <hemantk@codeaurora.org>

commit 43c4cab006f55b6ca549dd1214e22f5965a8675f upstream.

Upon driver unbind usb_free_all_descriptors() function frees all
speed descriptor pointers without setting them to NULL. In case
gadget speed changes (i.e from super speed plus to super speed)
after driver unbind only upto super speed descriptor pointers get
populated. Super speed plus desc still holds the stale (already
freed) pointer. Fix this issue by setting all descriptor pointers
to NULL after freeing them in usb_free_all_descriptors().

Fixes: f5c61225cf29 ("usb: gadget: Update function for SuperSpeedPlus")
cc: stable@vger.kernel.org
Reviewed-by: Peter Chen <peter.chen@kernel.org>
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
Link: https://lore.kernel.org/r/1619034452-17334-1-git-send-email-wcheng@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/usb/gadget/config.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/usb/gadget/config.c
+++ b/drivers/usb/gadget/config.c
@@ -198,9 +198,13 @@ EXPORT_SYMBOL_GPL(usb_assign_descriptors
 void usb_free_all_descriptors(struct usb_function *f)
 {
 	usb_free_descriptors(f->fs_descriptors);
+	f->fs_descriptors = NULL;
 	usb_free_descriptors(f->hs_descriptors);
+	f->hs_descriptors = NULL;
 	usb_free_descriptors(f->ss_descriptors);
+	f->ss_descriptors = NULL;
 	usb_free_descriptors(f->ssp_descriptors);
+	f->ssp_descriptors = NULL;
 }
 EXPORT_SYMBOL_GPL(usb_free_all_descriptors);
 



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 064/240] usb: gadget/function/f_fs string table fix for multiple languages
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (62 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 063/240] usb: gadget: Fix double free of device descriptor pointers Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 065/240] dm persistent data: packed struct should have an aligned() attribute too Greg Kroah-Hartman
                   ` (180 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Dean Anderson

From: Dean Anderson <dean@sensoray.com>

commit 55b74ce7d2ce0b0058f3e08cab185a0afacfe39e upstream.

Fixes bug with the handling of more than one language in
the string table in f_fs.c.
str_count was not reset for subsequent language codes.
str_count-- "rolls under" and processes u32 max strings on
the processing of the second language entry.
The existing bug can be reproduced by adding a second language table
to the structure "strings" in tools/usb/ffs-test.c.

Signed-off-by: Dean Anderson <dean@sensoray.com>
Link: https://lore.kernel.org/r/20210317224109.21534-1-dean@sensoray.com
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/usb/gadget/function/f_fs.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -2543,6 +2543,7 @@ static int __ffs_data_got_strings(struct
 
 	do { /* lang_count > 0 so we can use do-while */
 		unsigned needed = needed_count;
+		u32 str_per_lang = str_count;
 
 		if (unlikely(len < 3))
 			goto error_free;
@@ -2578,7 +2579,7 @@ static int __ffs_data_got_strings(struct
 
 			data += length + 1;
 			len -= length + 1;
-		} while (--str_count);
+		} while (--str_per_lang);
 
 		s->id = 0;   /* terminator */
 		s->s = NULL;



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 065/240] dm persistent data: packed struct should have an aligned() attribute too
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (63 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 064/240] usb: gadget/function/f_fs string table fix for multiple languages Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 066/240] dm space map common: fix division bug in sm_ll_find_free_block() Greg Kroah-Hartman
                   ` (179 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Joe Thornber, Mike Snitzer

From: Joe Thornber <ejt@redhat.com>

commit a88b2358f1da2c9f9fcc432f2e0a79617fea397c upstream.

Otherwise most non-x86 architectures (e.g. riscv, arm) will resort to
byte-by-byte access.

Cc: stable@vger.kernel.org
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/md/persistent-data/dm-btree-internal.h   |    4 ++--
 drivers/md/persistent-data/dm-space-map-common.h |    8 ++++----
 2 files changed, 6 insertions(+), 6 deletions(-)

--- a/drivers/md/persistent-data/dm-btree-internal.h
+++ b/drivers/md/persistent-data/dm-btree-internal.h
@@ -34,12 +34,12 @@ struct node_header {
 	__le32 max_entries;
 	__le32 value_size;
 	__le32 padding;
-} __packed;
+} __attribute__((packed, aligned(8)));
 
 struct btree_node {
 	struct node_header header;
 	__le64 keys[0];
-} __packed;
+} __attribute__((packed, aligned(8)));
 
 
 /*
--- a/drivers/md/persistent-data/dm-space-map-common.h
+++ b/drivers/md/persistent-data/dm-space-map-common.h
@@ -33,7 +33,7 @@ struct disk_index_entry {
 	__le64 blocknr;
 	__le32 nr_free;
 	__le32 none_free_before;
-} __packed;
+} __attribute__ ((packed, aligned(8)));
 
 
 #define MAX_METADATA_BITMAPS 255
@@ -43,7 +43,7 @@ struct disk_metadata_index {
 	__le64 blocknr;
 
 	struct disk_index_entry index[MAX_METADATA_BITMAPS];
-} __packed;
+} __attribute__ ((packed, aligned(8)));
 
 struct ll_disk;
 
@@ -86,7 +86,7 @@ struct disk_sm_root {
 	__le64 nr_allocated;
 	__le64 bitmap_root;
 	__le64 ref_count_root;
-} __packed;
+} __attribute__ ((packed, aligned(8)));
 
 #define ENTRIES_PER_BYTE 4
 
@@ -94,7 +94,7 @@ struct disk_bitmap_header {
 	__le32 csum;
 	__le32 not_used;
 	__le64 blocknr;
-} __packed;
+} __attribute__ ((packed, aligned(8)));
 
 enum allocation_event {
 	SM_NONE,



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 066/240] dm space map common: fix division bug in sm_ll_find_free_block()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (64 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 065/240] dm persistent data: packed struct should have an aligned() attribute too Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:20 ` [PATCH 4.9 067/240] dm rq: fix double free of blk_mq_tag_set in dev remove after table load fails Greg Kroah-Hartman
                   ` (178 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Joe Thornber, Ming-Hung Tsai, Mike Snitzer

From: Joe Thornber <ejt@redhat.com>

commit 5208692e80a1f3c8ce2063a22b675dd5589d1d80 upstream.

This division bug meant the search for free metadata space could skip
the final allocation bitmap's worth of entries. Fix affects DM thinp,
cache and era targets.

Cc: stable@vger.kernel.org
Signed-off-by: Joe Thornber <ejt@redhat.com>
Tested-by: Ming-Hung Tsai <mtsai@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/md/persistent-data/dm-space-map-common.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/md/persistent-data/dm-space-map-common.c
+++ b/drivers/md/persistent-data/dm-space-map-common.c
@@ -337,6 +337,8 @@ int sm_ll_find_free_block(struct ll_disk
 	 */
 	begin = do_div(index_begin, ll->entries_per_block);
 	end = do_div(end, ll->entries_per_block);
+	if (end == 0)
+		end = ll->entries_per_block;
 
 	for (i = index_begin; i < index_end; i++, begin = 0) {
 		struct dm_block *blk;



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 067/240] dm rq: fix double free of blk_mq_tag_set in dev remove after table load fails
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (65 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 066/240] dm space map common: fix division bug in sm_ll_find_free_block() Greg Kroah-Hartman
@ 2021-05-20  9:20 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 068/240] Bluetooth: verify AMP hci_chan before amp_destroy Greg Kroah-Hartman
                   ` (177 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:20 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Benjamin Block, Mike Snitzer

From: Benjamin Block <bblock@linux.ibm.com>

commit 8e947c8f4a5620df77e43c9c75310dc510250166 upstream.

When loading a device-mapper table for a request-based mapped device,
and the allocation/initialization of the blk_mq_tag_set for the device
fails, a following device remove will cause a double free.

E.g. (dmesg):
  device-mapper: core: Cannot initialize queue for request-based dm-mq mapped device
  device-mapper: ioctl: unable to set up device queue for new table.
  Unable to handle kernel pointer dereference in virtual kernel address space
  Failing address: 0305e098835de000 TEID: 0305e098835de803
  Fault in home space mode while using kernel ASCE.
  AS:000000025efe0007 R3:0000000000000024
  Oops: 0038 ilc:3 [#1] SMP
  Modules linked in: ... lots of modules ...
  Supported: Yes, External
  CPU: 0 PID: 7348 Comm: multipathd Kdump: loaded Tainted: G        W      X    5.3.18-53-default #1 SLE15-SP3
  Hardware name: IBM 8561 T01 7I2 (LPAR)
  Krnl PSW : 0704e00180000000 000000025e368eca (kfree+0x42/0x330)
             R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3
  Krnl GPRS: 000000000000004a 000000025efe5230 c1773200d779968d 0000000000000000
             000000025e520270 000000025e8d1b40 0000000000000003 00000007aae10000
             000000025e5202a2 0000000000000001 c1773200d779968d 0305e098835de640
             00000007a8170000 000003ff80138650 000000025e5202a2 000003e00396faa8
  Krnl Code: 000000025e368eb8: c4180041e100       lgrl    %r1,25eba50b8
             000000025e368ebe: ecba06b93a55       risbg   %r11,%r10,6,185,58
            #000000025e368ec4: e3b010000008       ag      %r11,0(%r1)
            >000000025e368eca: e310b0080004       lg      %r1,8(%r11)
             000000025e368ed0: a7110001           tmll    %r1,1
             000000025e368ed4: a7740129           brc     7,25e369126
             000000025e368ed8: e320b0080004       lg      %r2,8(%r11)
             000000025e368ede: b904001b           lgr     %r1,%r11
  Call Trace:
   [<000000025e368eca>] kfree+0x42/0x330
   [<000000025e5202a2>] blk_mq_free_tag_set+0x72/0xb8
   [<000003ff801316a8>] dm_mq_cleanup_mapped_device+0x38/0x50 [dm_mod]
   [<000003ff80120082>] free_dev+0x52/0xd0 [dm_mod]
   [<000003ff801233f0>] __dm_destroy+0x150/0x1d0 [dm_mod]
   [<000003ff8012bb9a>] dev_remove+0x162/0x1c0 [dm_mod]
   [<000003ff8012a988>] ctl_ioctl+0x198/0x478 [dm_mod]
   [<000003ff8012ac8a>] dm_ctl_ioctl+0x22/0x38 [dm_mod]
   [<000000025e3b11ee>] ksys_ioctl+0xbe/0xe0
   [<000000025e3b127a>] __s390x_sys_ioctl+0x2a/0x40
   [<000000025e8c15ac>] system_call+0xd8/0x2c8
  Last Breaking-Event-Address:
   [<000000025e52029c>] blk_mq_free_tag_set+0x6c/0xb8
  Kernel panic - not syncing: Fatal exception: panic_on_oops

When allocation/initialization of the blk_mq_tag_set fails in
dm_mq_init_request_queue(), it is uninitialized/freed, but the pointer
is not reset to NULL; so when dev_remove() later gets into
dm_mq_cleanup_mapped_device() it sees the pointer and tries to
uninitialize and free it again.

Fix this by setting the pointer to NULL in dm_mq_init_request_queue()
error-handling. Also set it to NULL in dm_mq_cleanup_mapped_device().

Cc: <stable@vger.kernel.org> # 4.6+
Fixes: 1c357a1e86a4 ("dm: allocate blk_mq_tag_set rather than embed in mapped_device")
Signed-off-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/md/dm-rq.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/md/dm-rq.c
+++ b/drivers/md/dm-rq.c
@@ -1009,6 +1009,7 @@ out_tag_set:
 	blk_mq_free_tag_set(md->tag_set);
 out_kfree_tag_set:
 	kfree(md->tag_set);
+	md->tag_set = NULL;
 
 	return err;
 }
@@ -1018,6 +1019,7 @@ void dm_mq_cleanup_mapped_device(struct
 	if (md->tag_set) {
 		blk_mq_free_tag_set(md->tag_set);
 		kfree(md->tag_set);
+		md->tag_set = NULL;
 	}
 }
 



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 068/240] Bluetooth: verify AMP hci_chan before amp_destroy
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (66 preceding siblings ...)
  2021-05-20  9:20 ` [PATCH 4.9 067/240] dm rq: fix double free of blk_mq_tag_set in dev remove after table load fails Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 069/240] hsr: use netdev_err() instead of WARN_ONCE() Greg Kroah-Hartman
                   ` (176 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Archie Pusaka,
	syzbot+98228e7407314d2d4ba2, Alain Michaud,
	Abhishek Pandit-Subedi, Marcel Holtmann, George Kennedy

From: Archie Pusaka <apusaka@chromium.org>

commit 5c4c8c9544099bb9043a10a5318130a943e32fc3 upstream.

hci_chan can be created in 2 places: hci_loglink_complete_evt() if
it is an AMP hci_chan, or l2cap_conn_add() otherwise. In theory,
Only AMP hci_chan should be removed by a call to
hci_disconn_loglink_complete_evt(). However, the controller might mess
up, call that function, and destroy an hci_chan which is not initiated
by hci_loglink_complete_evt().

This patch adds a verification that the destroyed hci_chan must have
been init'd by hci_loglink_complete_evt().

Example crash call trace:
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xe3/0x144 lib/dump_stack.c:118
 print_address_description+0x67/0x22a mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report mm/kasan/report.c:412 [inline]
 kasan_report+0x251/0x28f mm/kasan/report.c:396
 hci_send_acl+0x3b/0x56e net/bluetooth/hci_core.c:4072
 l2cap_send_cmd+0x5af/0x5c2 net/bluetooth/l2cap_core.c:877
 l2cap_send_move_chan_cfm_icid+0x8e/0xb1 net/bluetooth/l2cap_core.c:4661
 l2cap_move_fail net/bluetooth/l2cap_core.c:5146 [inline]
 l2cap_move_channel_rsp net/bluetooth/l2cap_core.c:5185 [inline]
 l2cap_bredr_sig_cmd net/bluetooth/l2cap_core.c:5464 [inline]
 l2cap_sig_channel net/bluetooth/l2cap_core.c:5799 [inline]
 l2cap_recv_frame+0x1d12/0x51aa net/bluetooth/l2cap_core.c:7023
 l2cap_recv_acldata+0x2ea/0x693 net/bluetooth/l2cap_core.c:7596
 hci_acldata_packet net/bluetooth/hci_core.c:4606 [inline]
 hci_rx_work+0x2bd/0x45e net/bluetooth/hci_core.c:4796
 process_one_work+0x6f8/0xb50 kernel/workqueue.c:2175
 worker_thread+0x4fc/0x670 kernel/workqueue.c:2321
 kthread+0x2f0/0x304 kernel/kthread.c:253
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:415

Allocated by task 38:
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc+0x8d/0x9a mm/kasan/kasan.c:553
 kmem_cache_alloc_trace+0x102/0x129 mm/slub.c:2787
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 hci_chan_create+0x86/0x26d net/bluetooth/hci_conn.c:1674
 l2cap_conn_add.part.0+0x1c/0x814 net/bluetooth/l2cap_core.c:7062
 l2cap_conn_add net/bluetooth/l2cap_core.c:7059 [inline]
 l2cap_connect_cfm+0x134/0x852 net/bluetooth/l2cap_core.c:7381
 hci_connect_cfm+0x9d/0x122 include/net/bluetooth/hci_core.h:1404
 hci_remote_ext_features_evt net/bluetooth/hci_event.c:4161 [inline]
 hci_event_packet+0x463f/0x72fa net/bluetooth/hci_event.c:5981
 hci_rx_work+0x197/0x45e net/bluetooth/hci_core.c:4791
 process_one_work+0x6f8/0xb50 kernel/workqueue.c:2175
 worker_thread+0x4fc/0x670 kernel/workqueue.c:2321
 kthread+0x2f0/0x304 kernel/kthread.c:253
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:415

Freed by task 1732:
 set_track mm/kasan/kasan.c:460 [inline]
 __kasan_slab_free mm/kasan/kasan.c:521 [inline]
 __kasan_slab_free+0x106/0x128 mm/kasan/kasan.c:493
 slab_free_hook mm/slub.c:1409 [inline]
 slab_free_freelist_hook+0xaa/0xf6 mm/slub.c:1436
 slab_free mm/slub.c:3009 [inline]
 kfree+0x182/0x21e mm/slub.c:3972
 hci_disconn_loglink_complete_evt net/bluetooth/hci_event.c:4891 [inline]
 hci_event_packet+0x6a1c/0x72fa net/bluetooth/hci_event.c:6050
 hci_rx_work+0x197/0x45e net/bluetooth/hci_core.c:4791
 process_one_work+0x6f8/0xb50 kernel/workqueue.c:2175
 worker_thread+0x4fc/0x670 kernel/workqueue.c:2321
 kthread+0x2f0/0x304 kernel/kthread.c:253
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:415

The buggy address belongs to the object at ffff8881d7af9180
 which belongs to the cache kmalloc-128 of size 128
The buggy address is located 24 bytes inside of
 128-byte region [ffff8881d7af9180, ffff8881d7af9200)
The buggy address belongs to the page:
page:ffffea00075ebe40 count:1 mapcount:0 mapping:ffff8881da403200 index:0x0
flags: 0x8000000000000200(slab)
raw: 8000000000000200 dead000000000100 dead000000000200 ffff8881da403200
raw: 0000000000000000 0000000080150015 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881d7af9080: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
 ffff8881d7af9100: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff8881d7af9180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                            ^
 ffff8881d7af9200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881d7af9280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

Signed-off-by: Archie Pusaka <apusaka@chromium.org>
Reported-by: syzbot+98228e7407314d2d4ba2@syzkaller.appspotmail.com
Reviewed-by: Alain Michaud <alainm@chromium.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Cc: George Kennedy <george.kennedy@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/net/bluetooth/hci_core.h |    1 +
 net/bluetooth/hci_event.c        |    3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -512,6 +512,7 @@ struct hci_chan {
 	struct sk_buff_head data_q;
 	unsigned int	sent;
 	__u8		state;
+	bool		amp;
 };
 
 struct hci_conn_params {
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -4399,6 +4399,7 @@ static void hci_loglink_complete_evt(str
 		return;
 
 	hchan->handle = le16_to_cpu(ev->handle);
+	hchan->amp = true;
 
 	BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
 
@@ -4431,7 +4432,7 @@ static void hci_disconn_loglink_complete
 	hci_dev_lock(hdev);
 
 	hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
-	if (!hchan)
+	if (!hchan || !hchan->amp)
 		goto unlock;
 
 	amp_destroy_logical_link(hchan, ev->reason);



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 069/240] hsr: use netdev_err() instead of WARN_ONCE()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (67 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 068/240] Bluetooth: verify AMP hci_chan before amp_destroy Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 070/240] bluetooth: eliminate the potential race condition when removing the HCI controller Greg Kroah-Hartman
                   ` (175 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Taehee Yoo, David S. Miller, George Kennedy

From: Taehee Yoo <ap420073@gmail.com>

commit 4b793acdca0050739b99ace6a8b9e7f717f57c6b upstream.

When HSR interface is sending a frame, it finds a node with
the destination ethernet address from the list.
If there is no node, it calls WARN_ONCE().
But, using WARN_ONCE() for this situation is a little bit overdoing.
So, in this patch, the netdev_err() is used instead.

Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: George Kennedy <george.kennedy@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/hsr/hsr_framereg.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/net/hsr/hsr_framereg.c
+++ b/net/hsr/hsr_framereg.c
@@ -310,7 +310,8 @@ void hsr_addr_subst_dest(struct hsr_node
 
 	node_dst = find_node_by_AddrA(&port->hsr->node_db, eth_hdr(skb)->h_dest);
 	if (!node_dst) {
-		WARN_ONCE(1, "%s: Unknown node\n", __func__);
+		if (net_ratelimit())
+			netdev_err(skb->dev, "%s: Unknown node\n", __func__);
 		return;
 	}
 	if (port->type != node_dst->AddrB_port)



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 070/240] bluetooth: eliminate the potential race condition when removing the HCI controller
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (68 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 069/240] hsr: use netdev_err() instead of WARN_ONCE() Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 071/240] net/nfc: fix use-after-free llcp_sock_bind/connect Greg Kroah-Hartman
                   ` (174 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Lin Ma, Marcel Holtmann

From: Lin Ma <linma@zju.edu.cn>

commit e2cb6b891ad2b8caa9131e3be70f45243df82a80 upstream.

There is a possible race condition vulnerability between issuing a HCI
command and removing the cont.  Specifically, functions hci_req_sync()
and hci_dev_do_close() can race each other like below:

thread-A in hci_req_sync()      |   thread-B in hci_dev_do_close()
                                |   hci_req_sync_lock(hdev);
test_bit(HCI_UP, &hdev->flags); |
...                             |   test_and_clear_bit(HCI_UP, &hdev->flags)
hci_req_sync_lock(hdev);        |
                                |
In this commit we alter the sequence in function hci_req_sync(). Hence,
the thread-A cannot issue th.

Signed-off-by: Lin Ma <linma@zju.edu.cn>
Cc: Marcel Holtmann <marcel@holtmann.org>
Fixes: 7c6a329e4447 ("[Bluetooth] Fix regression from using default link policy")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/bluetooth/hci_request.c |   12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -275,12 +275,16 @@ int hci_req_sync(struct hci_dev *hdev, i
 {
 	int ret;
 
-	if (!test_bit(HCI_UP, &hdev->flags))
-		return -ENETDOWN;
-
 	/* Serialize all requests */
 	hci_req_sync_lock(hdev);
-	ret = __hci_req_sync(hdev, req, opt, timeout, hci_status);
+	/* check the state after obtaing the lock to protect the HCI_UP
+	 * against any races from hci_dev_do_close when the controller
+	 * gets removed.
+	 */
+	if (test_bit(HCI_UP, &hdev->flags))
+		ret = __hci_req_sync(hdev, req, opt, timeout, hci_status);
+	else
+		ret = -ENETDOWN;
 	hci_req_sync_unlock(hdev);
 
 	return ret;



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 071/240] net/nfc: fix use-after-free llcp_sock_bind/connect
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (69 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 070/240] bluetooth: eliminate the potential race condition when removing the HCI controller Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 072/240] FDDI: defxx: Bail out gracefully with unassigned PCI resource for CSR Greg Kroah-Hartman
                   ` (173 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Or Cohen, Nadav Markus, David S. Miller

From: Or Cohen <orcohen@paloaltonetworks.com>

commit c61760e6940dd4039a7f5e84a6afc9cdbf4d82b6 upstream.

Commits 8a4cd82d ("nfc: fix refcount leak in llcp_sock_connect()")
and c33b1cc62 ("nfc: fix refcount leak in llcp_sock_bind()")
fixed a refcount leak bug in bind/connect but introduced a
use-after-free if the same local is assigned to 2 different sockets.

This can be triggered by the following simple program:
    int sock1 = socket( AF_NFC, SOCK_STREAM, NFC_SOCKPROTO_LLCP );
    int sock2 = socket( AF_NFC, SOCK_STREAM, NFC_SOCKPROTO_LLCP );
    memset( &addr, 0, sizeof(struct sockaddr_nfc_llcp) );
    addr.sa_family = AF_NFC;
    addr.nfc_protocol = NFC_PROTO_NFC_DEP;
    bind( sock1, (struct sockaddr*) &addr, sizeof(struct sockaddr_nfc_llcp) )
    bind( sock2, (struct sockaddr*) &addr, sizeof(struct sockaddr_nfc_llcp) )
    close(sock1);
    close(sock2);

Fix this by assigning NULL to llcp_sock->local after calling
nfc_llcp_local_put.

This addresses CVE-2021-23134.

Reported-by: Or Cohen <orcohen@paloaltonetworks.com>
Reported-by: Nadav Markus <nmarkus@paloaltonetworks.com>
Fixes: c33b1cc62 ("nfc: fix refcount leak in llcp_sock_bind()")
Signed-off-by: Or Cohen <orcohen@paloaltonetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/nfc/llcp_sock.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/net/nfc/llcp_sock.c
+++ b/net/nfc/llcp_sock.c
@@ -120,12 +120,14 @@ static int llcp_sock_bind(struct socket
 					  GFP_KERNEL);
 	if (!llcp_sock->service_name) {
 		nfc_llcp_local_put(llcp_sock->local);
+		llcp_sock->local = NULL;
 		ret = -ENOMEM;
 		goto put_dev;
 	}
 	llcp_sock->ssap = nfc_llcp_get_sdp_ssap(local, llcp_sock);
 	if (llcp_sock->ssap == LLCP_SAP_MAX) {
 		nfc_llcp_local_put(llcp_sock->local);
+		llcp_sock->local = NULL;
 		kfree(llcp_sock->service_name);
 		llcp_sock->service_name = NULL;
 		ret = -EADDRINUSE;
@@ -721,6 +723,7 @@ static int llcp_sock_connect(struct sock
 	llcp_sock->ssap = nfc_llcp_get_local_ssap(local);
 	if (llcp_sock->ssap == LLCP_SAP_MAX) {
 		nfc_llcp_local_put(llcp_sock->local);
+		llcp_sock->local = NULL;
 		ret = -ENOMEM;
 		goto put_dev;
 	}
@@ -759,6 +762,7 @@ static int llcp_sock_connect(struct sock
 sock_unlink:
 	nfc_llcp_put_ssap(local, llcp_sock->ssap);
 	nfc_llcp_local_put(llcp_sock->local);
+	llcp_sock->local = NULL;
 
 	nfc_llcp_sock_unlink(&local->connecting_sockets, sk);
 	kfree(llcp_sock->service_name);



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 072/240] FDDI: defxx: Bail out gracefully with unassigned PCI resource for CSR
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (70 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 071/240] net/nfc: fix use-after-free llcp_sock_bind/connect Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 073/240] misc: lis3lv02d: Fix false-positive WARN on various HP models Greg Kroah-Hartman
                   ` (172 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Maciej W. Rozycki, David S. Miller

From: Maciej W. Rozycki <macro@orcam.me.uk>

commit f626ca682912fab55dff15469ce893ae16b65c7e upstream.

Recent versions of the PCI Express specification have deprecated support
for I/O transactions and actually some PCIe host bridges, such as Power
Systems Host Bridge 4 (PHB4), do not implement them.

For those systems the PCI BARs that request a mapping in the I/O space
have the length recorded in the corresponding PCI resource set to zero,
which makes it unassigned:

# lspci -s 0031:02:04.0 -v
0031:02:04.0 FDDI network controller: Digital Equipment Corporation PCI-to-PDQ Interface Chip [PFI] FDDI (DEFPA) (rev 02)
	Subsystem: Digital Equipment Corporation FDDIcontroller/PCI (DEFPA)
	Flags: bus master, medium devsel, latency 136, IRQ 57, NUMA node 8
	Memory at 620c080020000 (32-bit, non-prefetchable) [size=128]
	I/O ports at <unassigned> [disabled]
	Memory at 620c080030000 (32-bit, non-prefetchable) [size=64K]
	Capabilities: [50] Power Management version 2
	Kernel driver in use: defxx
	Kernel modules: defxx

#

Regardless the driver goes ahead and requests it (here observed with a
Raptor Talos II POWER9 system), resulting in an odd /proc/ioport entry:

# cat /proc/ioports
00000000-ffffffffffffffff : 0031:02:04.0
#

Furthermore, the system gets confused as the driver actually continues
and pokes at those locations, causing a flood of messages being output
to the system console by the underlying system firmware, like:

defxx: v1.11 2014/07/01  Lawrence V. Stefani and others
defxx 0031:02:04.0: enabling device (0140 -> 0142)
LPC[000]: Got SYNC no-response error. Error address reg: 0xd0010000
IPMI: dropping non severe PEL event
LPC[000]: Got SYNC no-response error. Error address reg: 0xd0010014
IPMI: dropping non severe PEL event
LPC[000]: Got SYNC no-response error. Error address reg: 0xd0010014
IPMI: dropping non severe PEL event

and so on and so on (possibly intermixed actually, as there's no locking
between the kernel and the firmware in console port access with this
particular system, but cleaned up above for clarity), and once some 10k
of such pairs of the latter two messages have been produced an interace
eventually shows up in a useless state:

0031:02:04.0: DEFPA at I/O addr = 0x0, IRQ = 57, Hardware addr = 00-00-00-00-00-00

This was not expected to happen as resource handling was added to the
driver a while ago, because it was not known at that time that a PCI
system would be possible that cannot assign port I/O resources, and
oddly enough `request_region' does not fail, which would have caught it.

Correct the problem then by checking for the length of zero for the CSR
resource and bail out gracefully refusing to register an interface if
that turns out to be the case, producing messages like:

defxx: v1.11 2014/07/01  Lawrence V. Stefani and others
0031:02:04.0: Cannot use I/O, no address set, aborting
0031:02:04.0: Recompile driver with "CONFIG_DEFXX_MMIO=y"

Keep the original check for the EISA MMIO resource as implemented,
because in that case the length is hardwired to 0x400 as a consequence
of how the compare/mask address decoding works in the ESIC chip and it
is only the base address that is set to zero if MMIO has been disabled
for the adapter in EISA configuration, which in turn could be a valid
bus address in a legacy-free system implementing PCI, especially for
port I/O.

Where the EISA MMIO resource has been disabled for the adapter in EISA
configuration this arrangement keeps producing messages like:

eisa 00:05: EISA: slot 5: DEC3002 detected
defxx: v1.11 2014/07/01  Lawrence V. Stefani and others
00:05: Cannot use MMIO, no address set, aborting
00:05: Recompile driver with "CONFIG_DEFXX_MMIO=n"
00:05: Or run ECU and set adapter's MMIO location

with the last two lines now swapped for easier handling in the driver.

There is no need to check for and catch the case of a port I/O resource
not having been assigned for EISA as the adapter uses the slot-specific
I/O space, which gets assigned by how EISA has been specified and maps
directly to the particular slot an option card has been placed in.  And
the EISA variant of the adapter has additional registers that are only
accessible via the port I/O space anyway.

While at it factor out the error message calls into helpers and fix an
argument order bug with the `pr_err' call now in `dfx_register_res_err'.

Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Fixes: 4d0438e56a8f ("defxx: Clean up DEFEA resource management")
Cc: stable@vger.kernel.org # v3.19+
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/fddi/defxx.c |   47 ++++++++++++++++++++++++++++++-----------------
 1 file changed, 30 insertions(+), 17 deletions(-)

--- a/drivers/net/fddi/defxx.c
+++ b/drivers/net/fddi/defxx.c
@@ -495,6 +495,25 @@ static const struct net_device_ops dfx_n
 	.ndo_set_mac_address	= dfx_ctl_set_mac_address,
 };
 
+static void dfx_register_res_alloc_err(const char *print_name, bool mmio,
+				       bool eisa)
+{
+	pr_err("%s: Cannot use %s, no address set, aborting\n",
+	       print_name, mmio ? "MMIO" : "I/O");
+	pr_err("%s: Recompile driver with \"CONFIG_DEFXX_MMIO=%c\"\n",
+	       print_name, mmio ? 'n' : 'y');
+	if (eisa && mmio)
+		pr_err("%s: Or run ECU and set adapter's MMIO location\n",
+		       print_name);
+}
+
+static void dfx_register_res_err(const char *print_name, bool mmio,
+				 unsigned long start, unsigned long len)
+{
+	pr_err("%s: Cannot reserve %s resource 0x%lx @ 0x%lx, aborting\n",
+	       print_name, mmio ? "MMIO" : "I/O", len, start);
+}
+
 /*
  * ================
  * = dfx_register =
@@ -568,15 +587,12 @@ static int dfx_register(struct device *b
 	dev_set_drvdata(bdev, dev);
 
 	dfx_get_bars(bdev, bar_start, bar_len);
-	if (dfx_bus_eisa && dfx_use_mmio && bar_start[0] == 0) {
-		pr_err("%s: Cannot use MMIO, no address set, aborting\n",
-		       print_name);
-		pr_err("%s: Run ECU and set adapter's MMIO location\n",
-		       print_name);
-		pr_err("%s: Or recompile driver with \"CONFIG_DEFXX_MMIO=n\""
-		       "\n", print_name);
+	if (bar_len[0] == 0 ||
+	    (dfx_bus_eisa && dfx_use_mmio && bar_start[0] == 0)) {
+		dfx_register_res_alloc_err(print_name, dfx_use_mmio,
+					   dfx_bus_eisa);
 		err = -ENXIO;
-		goto err_out;
+		goto err_out_disable;
 	}
 
 	if (dfx_use_mmio)
@@ -585,18 +601,16 @@ static int dfx_register(struct device *b
 	else
 		region = request_region(bar_start[0], bar_len[0], print_name);
 	if (!region) {
-		pr_err("%s: Cannot reserve %s resource 0x%lx @ 0x%lx, "
-		       "aborting\n", dfx_use_mmio ? "MMIO" : "I/O", print_name,
-		       (long)bar_len[0], (long)bar_start[0]);
+		dfx_register_res_err(print_name, dfx_use_mmio,
+				     bar_start[0], bar_len[0]);
 		err = -EBUSY;
 		goto err_out_disable;
 	}
 	if (bar_start[1] != 0) {
 		region = request_region(bar_start[1], bar_len[1], print_name);
 		if (!region) {
-			pr_err("%s: Cannot reserve I/O resource "
-			       "0x%lx @ 0x%lx, aborting\n", print_name,
-			       (long)bar_len[1], (long)bar_start[1]);
+			dfx_register_res_err(print_name, 0,
+					     bar_start[1], bar_len[1]);
 			err = -EBUSY;
 			goto err_out_csr_region;
 		}
@@ -604,9 +618,8 @@ static int dfx_register(struct device *b
 	if (bar_start[2] != 0) {
 		region = request_region(bar_start[2], bar_len[2], print_name);
 		if (!region) {
-			pr_err("%s: Cannot reserve I/O resource "
-			       "0x%lx @ 0x%lx, aborting\n", print_name,
-			       (long)bar_len[2], (long)bar_start[2]);
+			dfx_register_res_err(print_name, 0,
+					     bar_start[2], bar_len[2]);
 			err = -EBUSY;
 			goto err_out_bh_region;
 		}



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 073/240] misc: lis3lv02d: Fix false-positive WARN on various HP models
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (71 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 072/240] FDDI: defxx: Bail out gracefully with unassigned PCI resource for CSR Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 074/240] misc: vmw_vmci: explicitly initialize vmci_notify_bm_set_msg struct Greg Kroah-Hartman
                   ` (171 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Hans de Goede

From: Hans de Goede <hdegoede@redhat.com>

commit 3641762c1c9c7cfd84a7061a0a73054f09b412e3 upstream.

Before this commit lis3lv02d_get_pwron_wait() had a WARN_ONCE() to catch
a potential divide by 0. WARN macros should only be used to catch internal
kernel bugs and that is not the case here. We have been receiving a lot of
bug reports about kernel backtraces caused by this WARN.

The div value being checked comes from the lis3->odrs[] array. Which
is sized to be a power-of-2 matching the number of bits in lis3->odr_mask.

The only lis3 model where this array is not entirely filled with non zero
values. IOW the only model where we can hit the div == 0 check is the
3dc ("8 bits 3DC sensor") model:

int lis3_3dc_rates[16] = {0, 1, 10, 25, 50, 100, 200, 400, 1600, 5000};

Note the 0 value at index 0, according to the datasheet an odr index of 0
means "Power-down mode". HP typically uses a lis3 accelerometer for HDD
fall protection. What I believe is happening here is that on newer
HP devices, which only contain a SDD, the BIOS is leaving the lis3 device
powered-down since it is not used for HDD fall protection.

Note that the lis3_3dc_rates array initializer only specifies 10 values,
which matches the datasheet. So it also contains 6 zero values at the end.

Replace the WARN with a normal check, which treats an odr index of 0
as power-down and uses a normal dev_err() to report the error in case
odr index point past the initialized part of the array.

Fixes: 1510dd5954be ("lis3lv02d: avoid divide by zero due to unchecked")
Cc: stable@vger.kernel.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=785814
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1817027
BugLink: https://bugs.centos.org/view.php?id=10720
Link: https://lore.kernel.org/r/20210217102501.31758-1-hdegoede@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/misc/lis3lv02d/lis3lv02d.c |   21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

--- a/drivers/misc/lis3lv02d/lis3lv02d.c
+++ b/drivers/misc/lis3lv02d/lis3lv02d.c
@@ -220,7 +220,7 @@ static int lis3_3dc_rates[16] = {0, 1, 1
 static int lis3_3dlh_rates[4] = {50, 100, 400, 1000};
 
 /* ODR is Output Data Rate */
-static int lis3lv02d_get_odr(struct lis3lv02d *lis3)
+static int lis3lv02d_get_odr_index(struct lis3lv02d *lis3)
 {
 	u8 ctrl;
 	int shift;
@@ -228,15 +228,23 @@ static int lis3lv02d_get_odr(struct lis3
 	lis3->read(lis3, CTRL_REG1, &ctrl);
 	ctrl &= lis3->odr_mask;
 	shift = ffs(lis3->odr_mask) - 1;
-	return lis3->odrs[(ctrl >> shift)];
+	return (ctrl >> shift);
 }
 
 static int lis3lv02d_get_pwron_wait(struct lis3lv02d *lis3)
 {
-	int div = lis3lv02d_get_odr(lis3);
+	int odr_idx = lis3lv02d_get_odr_index(lis3);
+	int div = lis3->odrs[odr_idx];
 
-	if (WARN_ONCE(div == 0, "device returned spurious data"))
+	if (div == 0) {
+		if (odr_idx == 0) {
+			/* Power-down mode, not sampling no need to sleep */
+			return 0;
+		}
+
+		dev_err(&lis3->pdev->dev, "Error unknown odrs-index: %d\n", odr_idx);
 		return -ENXIO;
+	}
 
 	/* LIS3 power on delay is quite long */
 	msleep(lis3->pwron_delay / div);
@@ -819,9 +827,12 @@ static ssize_t lis3lv02d_rate_show(struc
 			struct device_attribute *attr, char *buf)
 {
 	struct lis3lv02d *lis3 = dev_get_drvdata(dev);
+	int odr_idx;
 
 	lis3lv02d_sysfs_poweron(lis3);
-	return sprintf(buf, "%d\n", lis3lv02d_get_odr(lis3));
+
+	odr_idx = lis3lv02d_get_odr_index(lis3);
+	return sprintf(buf, "%d\n", lis3->odrs[odr_idx]);
 }
 
 static ssize_t lis3lv02d_rate_set(struct device *dev,



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 074/240] misc: vmw_vmci: explicitly initialize vmci_notify_bm_set_msg struct
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (72 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 073/240] misc: lis3lv02d: Fix false-positive WARN on various HP models Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 075/240] misc: vmw_vmci: explicitly initialize vmci_datagram payload Greg Kroah-Hartman
                   ` (170 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Tetsuo Handa

From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>

commit 376565b9717c30cd58ad33860fa42697615fa2e4 upstream.

KMSAN complains that the vmci_use_ppn64() == false path in
vmci_dbell_register_notification_bitmap() left upper 32bits of
bitmap_set_msg.bitmap_ppn64 member uninitialized.

  =====================================================
  BUG: KMSAN: uninit-value in kmsan_check_memory+0xd/0x10
  CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.11.0-rc7+ #4
  Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 02/27/2020
  Call Trace:
   dump_stack+0x21c/0x280
   kmsan_report+0xfb/0x1e0
   kmsan_internal_check_memory+0x484/0x520
   kmsan_check_memory+0xd/0x10
   iowrite8_rep+0x86/0x380
   vmci_send_datagram+0x150/0x280
   vmci_dbell_register_notification_bitmap+0x133/0x1e0
   vmci_guest_probe_device+0xcab/0x1e70
   pci_device_probe+0xab3/0xe70
   really_probe+0xd16/0x24d0
   driver_probe_device+0x29d/0x3a0
   device_driver_attach+0x25a/0x490
   __driver_attach+0x78c/0x840
   bus_for_each_dev+0x210/0x340
   driver_attach+0x89/0xb0
   bus_add_driver+0x677/0xc40
   driver_register+0x485/0x8e0
   __pci_register_driver+0x1ff/0x350
   vmci_guest_init+0x3e/0x41
   vmci_drv_init+0x1d6/0x43f
   do_one_initcall+0x39c/0x9a0
   do_initcall_level+0x1d7/0x259
   do_initcalls+0x127/0x1cb
   do_basic_setup+0x33/0x36
   kernel_init_freeable+0x29a/0x3ed
   kernel_init+0x1f/0x840
   ret_from_fork+0x1f/0x30

  Local variable ----bitmap_set_msg@vmci_dbell_register_notification_bitmap created at:
   vmci_dbell_register_notification_bitmap+0x50/0x1e0
   vmci_dbell_register_notification_bitmap+0x50/0x1e0

  Bytes 28-31 of 32 are uninitialized
  Memory access of size 32 starts at ffff88810098f570
  =====================================================

Fixes: 83e2ec765be03e8a ("VMCI: doorbell implementation.")
Cc: <stable@vger.kernel.org>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Link: https://lore.kernel.org/r/20210402121742.3917-1-penguin-kernel@I-love.SAKURA.ne.jp
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/misc/vmw_vmci/vmci_doorbell.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/misc/vmw_vmci/vmci_doorbell.c
+++ b/drivers/misc/vmw_vmci/vmci_doorbell.c
@@ -334,7 +334,7 @@ int vmci_dbell_host_context_notify(u32 s
 bool vmci_dbell_register_notification_bitmap(u32 bitmap_ppn)
 {
 	int result;
-	struct vmci_notify_bm_set_msg bitmap_set_msg;
+	struct vmci_notify_bm_set_msg bitmap_set_msg = { };
 
 	bitmap_set_msg.hdr.dst = vmci_make_handle(VMCI_HYPERVISOR_CONTEXT_ID,
 						  VMCI_SET_NOTIFY_BITMAP);



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 075/240] misc: vmw_vmci: explicitly initialize vmci_datagram payload
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (73 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 074/240] misc: vmw_vmci: explicitly initialize vmci_notify_bm_set_msg struct Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 076/240] tracing: Treat recording comm for idle task as a success Greg Kroah-Hartman
                   ` (169 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Tetsuo Handa

From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>

commit b2192cfeba8481224da0a4ec3b4a7ccd80b1623b upstream.

KMSAN complains that vmci_check_host_caps() left the payload part of
check_msg uninitialized.

  =====================================================
  BUG: KMSAN: uninit-value in kmsan_check_memory+0xd/0x10
  CPU: 1 PID: 1 Comm: swapper/0 Tainted: G    B             5.11.0-rc7+ #4
  Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 02/27/2020
  Call Trace:
   dump_stack+0x21c/0x280
   kmsan_report+0xfb/0x1e0
   kmsan_internal_check_memory+0x202/0x520
   kmsan_check_memory+0xd/0x10
   iowrite8_rep+0x86/0x380
   vmci_guest_probe_device+0xf0b/0x1e70
   pci_device_probe+0xab3/0xe70
   really_probe+0xd16/0x24d0
   driver_probe_device+0x29d/0x3a0
   device_driver_attach+0x25a/0x490
   __driver_attach+0x78c/0x840
   bus_for_each_dev+0x210/0x340
   driver_attach+0x89/0xb0
   bus_add_driver+0x677/0xc40
   driver_register+0x485/0x8e0
   __pci_register_driver+0x1ff/0x350
   vmci_guest_init+0x3e/0x41
   vmci_drv_init+0x1d6/0x43f
   do_one_initcall+0x39c/0x9a0
   do_initcall_level+0x1d7/0x259
   do_initcalls+0x127/0x1cb
   do_basic_setup+0x33/0x36
   kernel_init_freeable+0x29a/0x3ed
   kernel_init+0x1f/0x840
   ret_from_fork+0x1f/0x30

  Uninit was created at:
   kmsan_internal_poison_shadow+0x5c/0xf0
   kmsan_slab_alloc+0x8d/0xe0
   kmem_cache_alloc+0x84f/0xe30
   vmci_guest_probe_device+0xd11/0x1e70
   pci_device_probe+0xab3/0xe70
   really_probe+0xd16/0x24d0
   driver_probe_device+0x29d/0x3a0
   device_driver_attach+0x25a/0x490
   __driver_attach+0x78c/0x840
   bus_for_each_dev+0x210/0x340
   driver_attach+0x89/0xb0
   bus_add_driver+0x677/0xc40
   driver_register+0x485/0x8e0
   __pci_register_driver+0x1ff/0x350
   vmci_guest_init+0x3e/0x41
   vmci_drv_init+0x1d6/0x43f
   do_one_initcall+0x39c/0x9a0
   do_initcall_level+0x1d7/0x259
   do_initcalls+0x127/0x1cb
   do_basic_setup+0x33/0x36
   kernel_init_freeable+0x29a/0x3ed
   kernel_init+0x1f/0x840
   ret_from_fork+0x1f/0x30

  Bytes 28-31 of 36 are uninitialized
  Memory access of size 36 starts at ffff8881675e5f00
  =====================================================

Fixes: 1f166439917b69d3 ("VMCI: guest side driver implementation.")
Cc: <stable@vger.kernel.org>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Link: https://lore.kernel.org/r/20210402121742.3917-2-penguin-kernel@I-love.SAKURA.ne.jp
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/misc/vmw_vmci/vmci_guest.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/misc/vmw_vmci/vmci_guest.c
+++ b/drivers/misc/vmw_vmci/vmci_guest.c
@@ -172,7 +172,7 @@ static int vmci_check_host_caps(struct p
 				VMCI_UTIL_NUM_RESOURCES * sizeof(u32);
 	struct vmci_datagram *check_msg;
 
-	check_msg = kmalloc(msg_size, GFP_KERNEL);
+	check_msg = kzalloc(msg_size, GFP_KERNEL);
 	if (!check_msg) {
 		dev_err(&pdev->dev, "%s: Insufficient memory\n", __func__);
 		return -ENOMEM;



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 076/240] tracing: Treat recording comm for idle task as a success
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (74 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 075/240] misc: vmw_vmci: explicitly initialize vmci_datagram payload Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 077/240] tracing: Use strlcpy() instead of strcpy() in __trace_find_cmdline() Greg Kroah-Hartman
                   ` (168 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, kernel-team, Ingo Molnar,
	Michael Sartain, Joel Fernandes, Steven Rostedt (VMware)

From: Joel Fernandes <joelaf@google.com>

commit eaf260ac04d9b4cf9f458d5c97555bfff2da526e upstream.

Currently we stop recording comm for non-idle tasks when switching from/to idle
task since we treat that as a record failure. Fix that by treat recording of
comm for idle task as a success.

Link: http://lkml.kernel.org/r/20170706230023.17942-1-joelaf@google.com

Cc: kernel-team@android.com
Cc: Ingo Molnar <mingo@redhat.com>
Reported-by: Michael Sartain <mikesart@gmail.com>
Signed-off-by: Joel Fernandes <joelaf@google.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 kernel/trace/trace.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1811,7 +1811,11 @@ static int trace_save_cmdline(struct tas
 {
 	unsigned pid, idx;
 
-	if (!tsk->pid || unlikely(tsk->pid > PID_MAX_DEFAULT))
+	/* treat recording of idle task as a success */
+	if (!tsk->pid)
+		return 1;
+
+	if (unlikely(tsk->pid > PID_MAX_DEFAULT))
 		return 0;
 
 	/*



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 077/240] tracing: Use strlcpy() instead of strcpy() in __trace_find_cmdline()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (75 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 076/240] tracing: Treat recording comm for idle task as a success Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 078/240] tracing: Map all PIDs to command lines Greg Kroah-Hartman
                   ` (167 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Amey Telawane, Amit Pundir,
	Steven Rostedt (VMware)

From: Amey Telawane <ameyt@codeaurora.org>

commit e09e28671cda63e6308b31798b997639120e2a21 upstream.

Strcpy is inherently not safe, and strlcpy() should be used instead.
__trace_find_cmdline() uses strcpy() because the comms saved must have a
terminating nul character, but it doesn't hurt to add the extra protection
of using strlcpy() instead of strcpy().

Link: http://lkml.kernel.org/r/1493806274-13936-1-git-send-email-amit.pundir@linaro.org

Signed-off-by: Amey Telawane <ameyt@codeaurora.org>
[AmitP: Cherry-picked this commit from CodeAurora kernel/msm-3.10
https://source.codeaurora.org/quic/la/kernel/msm-3.10/commit/?id=2161ae9a70b12cf18ac8e5952a20161ffbccb477]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
[ Updated change log and removed the "- 1" from len parameter ]
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 kernel/trace/trace.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1875,7 +1875,7 @@ static void __trace_find_cmdline(int pid
 
 	map = savedcmd->map_pid_to_cmdline[pid];
 	if (map != NO_CMDLINE_MAP)
-		strcpy(comm, get_saved_cmdlines(map));
+		strlcpy(comm, get_saved_cmdlines(map), TASK_COMM_LEN);
 	else
 		strcpy(comm, "<...>");
 }



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 078/240] tracing: Map all PIDs to command lines
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (76 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 077/240] tracing: Use strlcpy() instead of strcpy() in __trace_find_cmdline() Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 079/240] tracing: Restructure trace_clock_global() to never block Greg Kroah-Hartman
                   ` (166 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Steven Rostedt (VMware)

From: Steven Rostedt (VMware) <rostedt@goodmis.org>

commit 785e3c0a3a870e72dc530856136ab4c8dd207128 upstream.

The default max PID is set by PID_MAX_DEFAULT, and the tracing
infrastructure uses this number to map PIDs to the comm names of the
tasks, such output of the trace can show names from the recorded PIDs in
the ring buffer. This mapping is also exported to user space via the
"saved_cmdlines" file in the tracefs directory.

But currently the mapping expects the PIDs to be less than
PID_MAX_DEFAULT, which is the default maximum and not the real maximum.
Recently, systemd will increases the maximum value of a PID on the system,
and when tasks are traced that have a PID higher than PID_MAX_DEFAULT, its
comm is not recorded. This leads to the entire trace to have "<...>" as
the comm name, which is pretty useless.

Instead, keep the array mapping the size of PID_MAX_DEFAULT, but instead
of just mapping the index to the comm, map a mask of the PID
(PID_MAX_DEFAULT - 1) to the comm, and find the full PID from the
map_cmdline_to_pid array (that already exists).

This bug goes back to the beginning of ftrace, but hasn't been an issue
until user space started increasing the maximum value of PIDs.

Link: https://lkml.kernel.org/r/20210427113207.3c601884@gandalf.local.home

Cc: stable@vger.kernel.org
Fixes: bc0c38d139ec7 ("ftrace: latency tracer infrastructure")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 kernel/trace/trace.c |   41 +++++++++++++++--------------------------
 1 file changed, 15 insertions(+), 26 deletions(-)

--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1809,14 +1809,13 @@ void trace_stop_cmdline_recording(void);
 
 static int trace_save_cmdline(struct task_struct *tsk)
 {
-	unsigned pid, idx;
+	unsigned tpid, idx;
 
 	/* treat recording of idle task as a success */
 	if (!tsk->pid)
 		return 1;
 
-	if (unlikely(tsk->pid > PID_MAX_DEFAULT))
-		return 0;
+	tpid = tsk->pid & (PID_MAX_DEFAULT - 1);
 
 	/*
 	 * It's not the end of the world if we don't get
@@ -1827,26 +1826,15 @@ static int trace_save_cmdline(struct tas
 	if (!arch_spin_trylock(&trace_cmdline_lock))
 		return 0;
 
-	idx = savedcmd->map_pid_to_cmdline[tsk->pid];
+	idx = savedcmd->map_pid_to_cmdline[tpid];
 	if (idx == NO_CMDLINE_MAP) {
 		idx = (savedcmd->cmdline_idx + 1) % savedcmd->cmdline_num;
 
-		/*
-		 * Check whether the cmdline buffer at idx has a pid
-		 * mapped. We are going to overwrite that entry so we
-		 * need to clear the map_pid_to_cmdline. Otherwise we
-		 * would read the new comm for the old pid.
-		 */
-		pid = savedcmd->map_cmdline_to_pid[idx];
-		if (pid != NO_CMDLINE_MAP)
-			savedcmd->map_pid_to_cmdline[pid] = NO_CMDLINE_MAP;
-
-		savedcmd->map_cmdline_to_pid[idx] = tsk->pid;
-		savedcmd->map_pid_to_cmdline[tsk->pid] = idx;
-
+		savedcmd->map_pid_to_cmdline[tpid] = idx;
 		savedcmd->cmdline_idx = idx;
 	}
 
+	savedcmd->map_cmdline_to_pid[idx] = tsk->pid;
 	set_cmdline(idx, tsk->comm);
 
 	arch_spin_unlock(&trace_cmdline_lock);
@@ -1857,6 +1845,7 @@ static int trace_save_cmdline(struct tas
 static void __trace_find_cmdline(int pid, char comm[])
 {
 	unsigned map;
+	int tpid;
 
 	if (!pid) {
 		strcpy(comm, "<idle>");
@@ -1868,16 +1857,16 @@ static void __trace_find_cmdline(int pid
 		return;
 	}
 
-	if (pid > PID_MAX_DEFAULT) {
-		strcpy(comm, "<...>");
-		return;
+	tpid = pid & (PID_MAX_DEFAULT - 1);
+	map = savedcmd->map_pid_to_cmdline[tpid];
+	if (map != NO_CMDLINE_MAP) {
+		tpid = savedcmd->map_cmdline_to_pid[map];
+		if (tpid == pid) {
+			strlcpy(comm, get_saved_cmdlines(map), TASK_COMM_LEN);
+			return;
+		}
 	}
-
-	map = savedcmd->map_pid_to_cmdline[pid];
-	if (map != NO_CMDLINE_MAP)
-		strlcpy(comm, get_saved_cmdlines(map), TASK_COMM_LEN);
-	else
-		strcpy(comm, "<...>");
+	strcpy(comm, "<...>");
 }
 
 void trace_find_cmdline(int pid, char comm[])



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 079/240] tracing: Restructure trace_clock_global() to never block
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (77 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 078/240] tracing: Map all PIDs to command lines Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 080/240] md-cluster: fix use-after-free issue when removing rdev Greg Kroah-Hartman
                   ` (165 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Konstantin Kharlamov, Todd Brandt,
	Steven Rostedt (VMware)

From: Steven Rostedt (VMware) <rostedt@goodmis.org>

commit aafe104aa9096827a429bc1358f8260ee565b7cc upstream.

It was reported that a fix to the ring buffer recursion detection would
cause a hung machine when performing suspend / resume testing. The
following backtrace was extracted from debugging that case:

Call Trace:
 trace_clock_global+0x91/0xa0
 __rb_reserve_next+0x237/0x460
 ring_buffer_lock_reserve+0x12a/0x3f0
 trace_buffer_lock_reserve+0x10/0x50
 __trace_graph_return+0x1f/0x80
 trace_graph_return+0xb7/0xf0
 ? trace_clock_global+0x91/0xa0
 ftrace_return_to_handler+0x8b/0xf0
 ? pv_hash+0xa0/0xa0
 return_to_handler+0x15/0x30
 ? ftrace_graph_caller+0xa0/0xa0
 ? trace_clock_global+0x91/0xa0
 ? __rb_reserve_next+0x237/0x460
 ? ring_buffer_lock_reserve+0x12a/0x3f0
 ? trace_event_buffer_lock_reserve+0x3c/0x120
 ? trace_event_buffer_reserve+0x6b/0xc0
 ? trace_event_raw_event_device_pm_callback_start+0x125/0x2d0
 ? dpm_run_callback+0x3b/0xc0
 ? pm_ops_is_empty+0x50/0x50
 ? platform_get_irq_byname_optional+0x90/0x90
 ? trace_device_pm_callback_start+0x82/0xd0
 ? dpm_run_callback+0x49/0xc0

With the following RIP:

RIP: 0010:native_queued_spin_lock_slowpath+0x69/0x200

Since the fix to the recursion detection would allow a single recursion to
happen while tracing, this lead to the trace_clock_global() taking a spin
lock and then trying to take it again:

ring_buffer_lock_reserve() {
  trace_clock_global() {
    arch_spin_lock() {
      queued_spin_lock_slowpath() {
        /* lock taken */
        (something else gets traced by function graph tracer)
          ring_buffer_lock_reserve() {
            trace_clock_global() {
              arch_spin_lock() {
                queued_spin_lock_slowpath() {
                /* DEAD LOCK! */

Tracing should *never* block, as it can lead to strange lockups like the
above.

Restructure the trace_clock_global() code to instead of simply taking a
lock to update the recorded "prev_time" simply use it, as two events
happening on two different CPUs that calls this at the same time, really
doesn't matter which one goes first. Use a trylock to grab the lock for
updating the prev_time, and if it fails, simply try again the next time.
If it failed to be taken, that means something else is already updating
it.

Link: https://lkml.kernel.org/r/20210430121758.650b6e8a@gandalf.local.home

Cc: stable@vger.kernel.org
Tested-by: Konstantin Kharlamov <hi-angel@yandex.ru>
Tested-by: Todd Brandt <todd.e.brandt@linux.intel.com>
Fixes: b02414c8f045 ("ring-buffer: Fix recursion protection transitions between interrupt context") # started showing the problem
Fixes: 14131f2f98ac3 ("tracing: implement trace_clock_*() APIs") # where the bug happened
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=212761
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 kernel/trace/trace_clock.c |   48 ++++++++++++++++++++++++++++++---------------
 1 file changed, 32 insertions(+), 16 deletions(-)

--- a/kernel/trace/trace_clock.c
+++ b/kernel/trace/trace_clock.c
@@ -93,33 +93,49 @@ u64 notrace trace_clock_global(void)
 {
 	unsigned long flags;
 	int this_cpu;
-	u64 now;
+	u64 now, prev_time;
 
 	local_irq_save(flags);
 
 	this_cpu = raw_smp_processor_id();
-	now = sched_clock_cpu(this_cpu);
+
 	/*
-	 * If in an NMI context then dont risk lockups and return the
-	 * cpu_clock() time:
+	 * The global clock "guarantees" that the events are ordered
+	 * between CPUs. But if two events on two different CPUS call
+	 * trace_clock_global at roughly the same time, it really does
+	 * not matter which one gets the earlier time. Just make sure
+	 * that the same CPU will always show a monotonic clock.
+	 *
+	 * Use a read memory barrier to get the latest written
+	 * time that was recorded.
 	 */
-	if (unlikely(in_nmi()))
-		goto out;
+	smp_rmb();
+	prev_time = READ_ONCE(trace_clock_struct.prev_time);
+	now = sched_clock_cpu(this_cpu);
 
-	arch_spin_lock(&trace_clock_struct.lock);
+	/* Make sure that now is always greater than prev_time */
+	if ((s64)(now - prev_time) < 0)
+		now = prev_time + 1;
 
 	/*
-	 * TODO: if this happens often then maybe we should reset
-	 * my_scd->clock to prev_time+1, to make sure
-	 * we start ticking with the local clock from now on?
+	 * If in an NMI context then dont risk lockups and simply return
+	 * the current time.
 	 */
-	if ((s64)(now - trace_clock_struct.prev_time) < 0)
-		now = trace_clock_struct.prev_time + 1;
-
-	trace_clock_struct.prev_time = now;
-
-	arch_spin_unlock(&trace_clock_struct.lock);
+	if (unlikely(in_nmi()))
+		goto out;
 
+	/* Tracing can cause strange recursion, always use a try lock */
+	if (arch_spin_trylock(&trace_clock_struct.lock)) {
+		/* Reread prev_time in case it was already updated */
+		prev_time = READ_ONCE(trace_clock_struct.prev_time);
+		if ((s64)(now - prev_time) < 0)
+			now = prev_time + 1;
+
+		trace_clock_struct.prev_time = now;
+
+		/* The unlock acts as the wmb for the above rmb */
+		arch_spin_unlock(&trace_clock_struct.lock);
+	}
  out:
 	local_irq_restore(flags);
 



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 080/240] md-cluster: fix use-after-free issue when removing rdev
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (78 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 079/240] tracing: Restructure trace_clock_global() to never block Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 081/240] md: factor out a mddev_find_locked helper from mddev_find Greg Kroah-Hartman
                   ` (164 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Gang He, Heming Zhao, Song Liu

From: Heming Zhao <heming.zhao@suse.com>

commit f7c7a2f9a23e5b6e0f5251f29648d0238bb7757e upstream.

md_kick_rdev_from_array will remove rdev, so we should
use rdev_for_each_safe to search list.

How to trigger:

env: Two nodes on kvm-qemu x86_64 VMs (2C2G with 2 iscsi luns).

```
node2=192.168.0.3

for i in {1..20}; do
    echo ==== $i `date` ====;

    mdadm -Ss && ssh ${node2} "mdadm -Ss"
    wipefs -a /dev/sda /dev/sdb

    mdadm -CR /dev/md0 -b clustered -e 1.2 -n 2 -l 1 /dev/sda \
       /dev/sdb --assume-clean
    ssh ${node2} "mdadm -A /dev/md0 /dev/sda /dev/sdb"
    mdadm --wait /dev/md0
    ssh ${node2} "mdadm --wait /dev/md0"

    mdadm --manage /dev/md0 --fail /dev/sda --remove /dev/sda
    sleep 1
done
```

Crash stack:

```
stack segment: 0000 [#1] SMP
... ...
RIP: 0010:md_check_recovery+0x1e8/0x570 [md_mod]
... ...
RSP: 0018:ffffb149807a7d68 EFLAGS: 00010207
RAX: 0000000000000000 RBX: ffff9d494c180800 RCX: ffff9d490fc01e50
RDX: fffff047c0ed8308 RSI: 0000000000000246 RDI: 0000000000000246
RBP: 6b6b6b6b6b6b6b6b R08: ffff9d490fc01e40 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000
R13: ffff9d494c180818 R14: ffff9d493399ef38 R15: ffff9d4933a1d800
FS:  0000000000000000(0000) GS:ffff9d494f700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe68cab9010 CR3: 000000004c6be001 CR4: 00000000003706e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 raid1d+0x5c/0xd40 [raid1]
 ? finish_task_switch+0x75/0x2a0
 ? lock_timer_base+0x67/0x80
 ? try_to_del_timer_sync+0x4d/0x80
 ? del_timer_sync+0x41/0x50
 ? schedule_timeout+0x254/0x2d0
 ? md_start_sync+0xe0/0xe0 [md_mod]
 ? md_thread+0x127/0x160 [md_mod]
 md_thread+0x127/0x160 [md_mod]
 ? wait_woken+0x80/0x80
 kthread+0x10d/0x130
 ? kthread_park+0xa0/0xa0
 ret_from_fork+0x1f/0x40
```

Fixes: dbb64f8635f5d ("md-cluster: Fix adding of new disk with new reload code")
Fixes: 659b254fa7392 ("md-cluster: remove a disk asynchronously from cluster environment")
Cc: stable@vger.kernel.org
Reviewed-by: Gang He <ghe@suse.com>
Signed-off-by: Heming Zhao <heming.zhao@suse.com>
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/md/md.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -8462,11 +8462,11 @@ void md_check_recovery(struct mddev *mdd
 		}
 
 		if (mddev_is_clustered(mddev)) {
-			struct md_rdev *rdev;
+			struct md_rdev *rdev, *tmp;
 			/* kick the device if another node issued a
 			 * remove disk.
 			 */
-			rdev_for_each(rdev, mddev) {
+			rdev_for_each_safe(rdev, tmp, mddev) {
 				if (test_and_clear_bit(ClusterRemove, &rdev->flags) &&
 						rdev->raid_disk < 0)
 					md_kick_rdev_from_array(rdev);
@@ -8775,12 +8775,12 @@ err_wq:
 static void check_sb_changes(struct mddev *mddev, struct md_rdev *rdev)
 {
 	struct mdp_superblock_1 *sb = page_address(rdev->sb_page);
-	struct md_rdev *rdev2;
+	struct md_rdev *rdev2, *tmp;
 	int role, ret;
 	char b[BDEVNAME_SIZE];
 
 	/* Check for change of roles in the active devices */
-	rdev_for_each(rdev2, mddev) {
+	rdev_for_each_safe(rdev2, tmp, mddev) {
 		if (test_bit(Faulty, &rdev2->flags))
 			continue;
 



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 081/240] md: factor out a mddev_find_locked helper from mddev_find
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (79 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 080/240] md-cluster: fix use-after-free issue when removing rdev Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 082/240] md: md_open returns -EBUSY when entering racing area Greg Kroah-Hartman
                   ` (163 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Heming Zhao, Christoph Hellwig, Song Liu

From: Christoph Hellwig <hch@lst.de>

commit 8b57251f9a91f5e5a599de7549915d2d226cc3af upstream.

Factor out a self-contained helper to just lookup a mddev by the dev_t
"unit".

Cc: stable@vger.kernel.org
Reviewed-by: Heming Zhao <heming.zhao@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/md/md.c |   32 +++++++++++++++++++-------------
 1 file changed, 19 insertions(+), 13 deletions(-)

--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -508,6 +508,17 @@ void mddev_init(struct mddev *mddev)
 }
 EXPORT_SYMBOL_GPL(mddev_init);
 
+static struct mddev *mddev_find_locked(dev_t unit)
+{
+	struct mddev *mddev;
+
+	list_for_each_entry(mddev, &all_mddevs, all_mddevs)
+		if (mddev->unit == unit)
+			return mddev;
+
+	return NULL;
+}
+
 static struct mddev *mddev_find(dev_t unit)
 {
 	struct mddev *mddev, *new = NULL;
@@ -519,13 +530,13 @@ static struct mddev *mddev_find(dev_t un
 	spin_lock(&all_mddevs_lock);
 
 	if (unit) {
-		list_for_each_entry(mddev, &all_mddevs, all_mddevs)
-			if (mddev->unit == unit) {
-				mddev_get(mddev);
-				spin_unlock(&all_mddevs_lock);
-				kfree(new);
-				return mddev;
-			}
+		mddev = mddev_find_locked(unit);
+		if (mddev) {
+			mddev_get(mddev);
+			spin_unlock(&all_mddevs_lock);
+			kfree(new);
+			return mddev;
+		}
 
 		if (new) {
 			list_add(&new->all_mddevs, &all_mddevs);
@@ -551,12 +562,7 @@ static struct mddev *mddev_find(dev_t un
 				return NULL;
 			}
 
-			is_free = 1;
-			list_for_each_entry(mddev, &all_mddevs, all_mddevs)
-				if (mddev->unit == dev) {
-					is_free = 0;
-					break;
-				}
+			is_free = !mddev_find_locked(dev);
 		}
 		new->unit = dev;
 		new->md_minor = MINOR(dev);



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 082/240] md: md_open returns -EBUSY when entering racing area
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (80 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 081/240] md: factor out a mddev_find_locked helper from mddev_find Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 083/240] ipw2x00: potential buffer overflow in libipw_wx_set_encodeext() Greg Kroah-Hartman
                   ` (162 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Christoph Hellwig, Zhao Heming, Song Liu

From: Zhao Heming <heming.zhao@suse.com>

commit 6a4db2a60306eb65bfb14ccc9fde035b74a4b4e7 upstream.

commit d3374825ce57 ("md: make devices disappear when they are no longer
needed.") introduced protection between mddev creating & removing. The
md_open shouldn't create mddev when all_mddevs list doesn't contain
mddev. With currently code logic, there will be very easy to trigger
soft lockup in non-preempt env.

This patch changes md_open returning from -ERESTARTSYS to -EBUSY, which
will break the infinitely retry when md_open enter racing area.

This patch is partly fix soft lockup issue, full fix needs mddev_find
is split into two functions: mddev_find & mddev_find_or_alloc. And
md_open should call new mddev_find (it only does searching job).

For more detail, please refer with Christoph's "split mddev_find" patch
in later commits.

*** env ***
kvm-qemu VM 2C1G with 2 iscsi luns
kernel should be non-preempt

*** script ***

about trigger every time with below script

```
1  node1="mdcluster1"
2  node2="mdcluster2"
3
4  mdadm -Ss
5  ssh ${node2} "mdadm -Ss"
6  wipefs -a /dev/sda /dev/sdb
7  mdadm -CR /dev/md0 -b clustered -e 1.2 -n 2 -l mirror /dev/sda \
   /dev/sdb --assume-clean
8
9  for i in {1..10}; do
10    echo ==== $i ====;
11
12    echo "test  ...."
13    ssh ${node2} "mdadm -A /dev/md0 /dev/sda /dev/sdb"
14    sleep 1
15
16    echo "clean  ....."
17    ssh ${node2} "mdadm -Ss"
18 done
```

I use mdcluster env to trigger soft lockup, but it isn't mdcluster
speical bug. To stop md array in mdcluster env will do more jobs than
non-cluster array, which will leave enough time/gap to allow kernel to
run md_open.

*** stack ***

```
[  884.226509]  mddev_put+0x1c/0xe0 [md_mod]
[  884.226515]  md_open+0x3c/0xe0 [md_mod]
[  884.226518]  __blkdev_get+0x30d/0x710
[  884.226520]  ? bd_acquire+0xd0/0xd0
[  884.226522]  blkdev_get+0x14/0x30
[  884.226524]  do_dentry_open+0x204/0x3a0
[  884.226531]  path_openat+0x2fc/0x1520
[  884.226534]  ? seq_printf+0x4e/0x70
[  884.226536]  do_filp_open+0x9b/0x110
[  884.226542]  ? md_release+0x20/0x20 [md_mod]
[  884.226543]  ? seq_read+0x1d8/0x3e0
[  884.226545]  ? kmem_cache_alloc+0x18a/0x270
[  884.226547]  ? do_sys_open+0x1bd/0x260
[  884.226548]  do_sys_open+0x1bd/0x260
[  884.226551]  do_syscall_64+0x5b/0x1e0
[  884.226554]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
```

*** rootcause ***

"mdadm -A" (or other array assemble commands) will start a daemon "mdadm
--monitor" by default. When "mdadm -Ss" is running, the stop action will
wakeup "mdadm --monitor". The "--monitor" daemon will immediately get
info from /proc/mdstat. This time mddev in kernel still exist, so
/proc/mdstat still show md device, which makes "mdadm --monitor" to open
/dev/md0.

The previously "mdadm -Ss" is removing action, the "mdadm --monitor"
open action will trigger md_open which is creating action. Racing is
happening.

```
<thread 1>: "mdadm -Ss"
md_release
  mddev_put deletes mddev from all_mddevs
  queue_work for mddev_delayed_delete
  at this time, "/dev/md0" is still available for opening

<thread 2>: "mdadm --monitor ..."
md_open
 + mddev_find can't find mddev of /dev/md0, and create a new mddev and
 |    return.
 + trigger "if (mddev->gendisk != bdev->bd_disk)" and return
      -ERESTARTSYS.
```

In non-preempt kernel, <thread 2> is occupying on current CPU. and
mddev_delayed_delete which was created in <thread 1> also can't be
schedule.

In preempt kernel, it can also trigger above racing. But kernel doesn't
allow one thread running on a CPU all the time. after <thread 2> running
some time, the later "mdadm -A" (refer above script line 13) will call
md_alloc to alloc a new gendisk for mddev. it will break md_open
statement "if (mddev->gendisk != bdev->bd_disk)" and return 0 to caller,
the soft lockup is broken.

Cc: stable@vger.kernel.org
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Zhao Heming <heming.zhao@suse.com>
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/md/md.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 368cad6cd53a..464cca5d5952 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -7821,8 +7821,7 @@ static int md_open(struct block_device *bdev, fmode_t mode)
 		/* Wait until bdev->bd_disk is definitely gone */
 		if (work_pending(&mddev->del_work))
 			flush_workqueue(md_misc_wq);
-		/* Then retry the open from the top */
-		return -ERESTARTSYS;
+		return -EBUSY;
 	}
 	BUG_ON(mddev != bdev->bd_disk->private_data);
 
-- 
2.31.1




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 083/240] ipw2x00: potential buffer overflow in libipw_wx_set_encodeext()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (81 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 082/240] md: md_open returns -EBUSY when entering racing area Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 084/240] cfg80211: scan: drop entry from hidden_list on overflow Greg Kroah-Hartman
                   ` (161 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Dan Carpenter, Stanislav Yakovlev,
	Kalle Valo

From: Dan Carpenter <dan.carpenter@oracle.com>

commit 260a9ad9446723d4063ed802989758852809714d upstream.

The "ext->key_len" is a u16 that comes from the user.  If it's over
SCM_KEY_LEN (32) that could lead to memory corruption.

Fixes: e0d369d1d969 ("[PATCH] ieee82011: Added WE-18 support to default wireless extension handler")
Cc: stable@vger.kernel.org
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Stanislav Yakovlev <stas.yakovlev@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/YHaoA1i+8uT4ir4h@mwanda
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/wireless/intel/ipw2x00/libipw_wx.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/net/wireless/intel/ipw2x00/libipw_wx.c
+++ b/drivers/net/wireless/intel/ipw2x00/libipw_wx.c
@@ -649,8 +649,10 @@ int libipw_wx_set_encodeext(struct libip
 	}
 
 	if (ext->alg != IW_ENCODE_ALG_NONE) {
-		memcpy(sec.keys[idx], ext->key, ext->key_len);
-		sec.key_sizes[idx] = ext->key_len;
+		int key_len = clamp_val(ext->key_len, 0, SCM_KEY_LEN);
+
+		memcpy(sec.keys[idx], ext->key, key_len);
+		sec.key_sizes[idx] = key_len;
 		sec.flags |= (1 << idx);
 		if (ext->alg == IW_ENCODE_ALG_WEP) {
 			sec.encode_alg[idx] = SEC_ALG_WEP;



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 084/240] cfg80211: scan: drop entry from hidden_list on overflow
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (82 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 083/240] ipw2x00: potential buffer overflow in libipw_wx_set_encodeext() Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 085/240] drm/radeon: fix copy of uninitialized variable back to userspace Greg Kroah-Hartman
                   ` (160 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Dan Carpenter, Johannes Berg

From: Johannes Berg <johannes.berg@intel.com>

commit 010bfbe768f7ecc876ffba92db30432de4997e2a upstream.

If we overflow the maximum number of BSS entries and free the
new entry, drop it from any hidden_list that it may have been
added to in the code above or in cfg80211_combine_bsses().

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20210416094212.5de7d1676ad7.Ied283b0bc5f504845e7d6ab90626bdfa68bb3dc0@changeid
Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/wireless/scan.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -956,6 +956,8 @@ cfg80211_bss_update(struct cfg80211_regi
 
 		if (rdev->bss_entries >= bss_entries_limit &&
 		    !cfg80211_bss_expire_oldest(rdev)) {
+			if (!list_empty(&new->hidden_list))
+				list_del(&new->hidden_list);
 			kfree(new);
 			goto drop;
 		}



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 085/240] drm/radeon: fix copy of uninitialized variable back to userspace
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (83 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 084/240] cfg80211: scan: drop entry from hidden_list on overflow Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 086/240] ALSA: hda/realtek: Re-order ALC882 Acer quirk table entries Greg Kroah-Hartman
                   ` (159 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Christian König, Colin Ian King,
	Alex Deucher

From: Colin Ian King <colin.king@canonical.com>

commit 8dbc2ccac5a65c5b57e3070e36a3dc97c7970d96 upstream.

Currently the ioctl command RADEON_INFO_SI_BACKEND_ENABLED_MASK can
copy back uninitialised data in value_tmp that pointer *value points
to. This can occur when rdev->family is less than CHIP_BONAIRE and
less than CHIP_TAHITI.  Fix this by adding in a missing -EINVAL
so that no invalid value is copied back to userspace.

Addresses-Coverity: ("Uninitialized scalar variable)
Cc: stable@vger.kernel.org # 3.13+
Fixes: 439a1cfffe2c ("drm/radeon: expose render backend mask to the userspace")
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/radeon/radeon_kms.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -506,6 +506,7 @@ static int radeon_info_ioctl(struct drm_
 			*value = rdev->config.si.backend_enable_mask;
 		} else {
 			DRM_DEBUG_KMS("BACKEND_ENABLED_MASK is si+ only!\n");
+			return -EINVAL;
 		}
 		break;
 	case RADEON_INFO_MAX_SCLK:



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 086/240] ALSA: hda/realtek: Re-order ALC882 Acer quirk table entries
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (84 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 085/240] drm/radeon: fix copy of uninitialized variable back to userspace Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 087/240] ALSA: hda/realtek: Re-order ALC882 Sony " Greg Kroah-Hartman
                   ` (158 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Takashi Iwai

From: Takashi Iwai <tiwai@suse.de>

commit b265047ac56bad8c4f3d0c8bf9cb4e828ee0d28e upstream.

Just re-order the alc882_fixup_tbl[] entries for Acer devices for
avoiding the oversight of the duplicated or unapplied item in future.
No functional changes.

Also Cc-to-stable for the further patch applications.

Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210428112704.23967-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 sound/pci/hda/patch_realtek.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -2219,13 +2219,13 @@ static const struct snd_pci_quirk alc882
 		      ALC882_FIXUP_ACER_ASPIRE_8930G),
 	SND_PCI_QUIRK(0x1025, 0x0146, "Acer Aspire 6935G",
 		      ALC882_FIXUP_ACER_ASPIRE_8930G),
+	SND_PCI_QUIRK(0x1025, 0x0142, "Acer Aspire 7730G",
+		      ALC882_FIXUP_ACER_ASPIRE_4930G),
+	SND_PCI_QUIRK(0x1025, 0x0155, "Packard-Bell M5120", ALC882_FIXUP_PB_M5210),
 	SND_PCI_QUIRK(0x1025, 0x015e, "Acer Aspire 6930G",
 		      ALC882_FIXUP_ACER_ASPIRE_4930G),
 	SND_PCI_QUIRK(0x1025, 0x0166, "Acer Aspire 6530G",
 		      ALC882_FIXUP_ACER_ASPIRE_4930G),
-	SND_PCI_QUIRK(0x1025, 0x0142, "Acer Aspire 7730G",
-		      ALC882_FIXUP_ACER_ASPIRE_4930G),
-	SND_PCI_QUIRK(0x1025, 0x0155, "Packard-Bell M5120", ALC882_FIXUP_PB_M5210),
 	SND_PCI_QUIRK(0x1025, 0x021e, "Acer Aspire 5739G",
 		      ALC882_FIXUP_ACER_ASPIRE_4930G),
 	SND_PCI_QUIRK(0x1025, 0x0259, "Acer Aspire 5935", ALC889_FIXUP_DAC_ROUTE),



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 087/240] ALSA: hda/realtek: Re-order ALC882 Sony quirk table entries
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (85 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 086/240] ALSA: hda/realtek: Re-order ALC882 Acer quirk table entries Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 088/240] ALSA: hda/realtek: Re-order ALC269 " Greg Kroah-Hartman
                   ` (157 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Takashi Iwai

From: Takashi Iwai <tiwai@suse.de>

commit b7529c18feecb1af92f9db08c8e7fe446a82d96d upstream.

Just re-order the alc882_fixup_tbl[] entries for Sony devices for
avoiding the oversight of the duplicated or unapplied item in future.
No functional changes.

Also Cc-to-stable for the further patch applications.

Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210428112704.23967-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 sound/pci/hda/patch_realtek.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -2237,11 +2237,11 @@ static const struct snd_pci_quirk alc882
 	SND_PCI_QUIRK(0x1043, 0x835f, "Asus Eee 1601", ALC888_FIXUP_EEE1601),
 	SND_PCI_QUIRK(0x1043, 0x84bc, "ASUS ET2700", ALC887_FIXUP_ASUS_BASS),
 	SND_PCI_QUIRK(0x1043, 0x8691, "ASUS ROG Ranger VIII", ALC882_FIXUP_GPIO3),
+	SND_PCI_QUIRK(0x104d, 0x9043, "Sony Vaio VGC-LN51JGB", ALC882_FIXUP_NO_PRIMARY_HP),
+	SND_PCI_QUIRK(0x104d, 0x9044, "Sony VAIO AiO", ALC882_FIXUP_NO_PRIMARY_HP),
 	SND_PCI_QUIRK(0x104d, 0x9047, "Sony Vaio TT", ALC889_FIXUP_VAIO_TT),
 	SND_PCI_QUIRK(0x104d, 0x905a, "Sony Vaio Z", ALC882_FIXUP_NO_PRIMARY_HP),
 	SND_PCI_QUIRK(0x104d, 0x9060, "Sony Vaio VPCL14M1R", ALC882_FIXUP_NO_PRIMARY_HP),
-	SND_PCI_QUIRK(0x104d, 0x9043, "Sony Vaio VGC-LN51JGB", ALC882_FIXUP_NO_PRIMARY_HP),
-	SND_PCI_QUIRK(0x104d, 0x9044, "Sony VAIO AiO", ALC882_FIXUP_NO_PRIMARY_HP),
 
 	/* All Apple entries are in codec SSIDs */
 	SND_PCI_QUIRK(0x106b, 0x00a0, "MacBookPro 3,1", ALC889_FIXUP_MBP_VREF),



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 088/240] ALSA: hda/realtek: Re-order ALC269 Sony quirk table entries
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (86 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 087/240] ALSA: hda/realtek: Re-order ALC882 Sony " Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 089/240] ALSA: hda/realtek: Re-order ALC269 Lenovo " Greg Kroah-Hartman
                   ` (156 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Takashi Iwai

From: Takashi Iwai <tiwai@suse.de>

commit cab561f8d4bc9b196ae20c960aa5da89fd786ab5 upstream.

Just re-order the alc269_fixup_tbl[] entries for Sony devices for
avoiding the oversight of the duplicated or unapplied item in future.
No functional changes.

Also Cc-to-stable for the further patch applications.

Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210428112704.23967-9-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 sound/pci/hda/patch_realtek.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -5821,12 +5821,12 @@ static const struct snd_pci_quirk alc269
 	SND_PCI_QUIRK(0x1043, 0x8398, "ASUS P1005", ALC269_FIXUP_STEREO_DMIC),
 	SND_PCI_QUIRK(0x1043, 0x83ce, "ASUS P1005", ALC269_FIXUP_STEREO_DMIC),
 	SND_PCI_QUIRK(0x1043, 0x8516, "ASUS X101CH", ALC269_FIXUP_ASUS_X101),
-	SND_PCI_QUIRK(0x104d, 0x90b5, "Sony VAIO Pro 11", ALC286_FIXUP_SONY_MIC_NO_PRESENCE),
-	SND_PCI_QUIRK(0x104d, 0x90b6, "Sony VAIO Pro 13", ALC286_FIXUP_SONY_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x104d, 0x9073, "Sony VAIO", ALC275_FIXUP_SONY_VAIO_GPIO2),
 	SND_PCI_QUIRK(0x104d, 0x907b, "Sony VAIO", ALC275_FIXUP_SONY_HWEQ),
 	SND_PCI_QUIRK(0x104d, 0x9084, "Sony VAIO", ALC275_FIXUP_SONY_HWEQ),
 	SND_PCI_QUIRK(0x104d, 0x9099, "Sony VAIO S13", ALC275_FIXUP_SONY_DISABLE_AAMIX),
+	SND_PCI_QUIRK(0x104d, 0x90b5, "Sony VAIO Pro 11", ALC286_FIXUP_SONY_MIC_NO_PRESENCE),
+	SND_PCI_QUIRK(0x104d, 0x90b6, "Sony VAIO Pro 13", ALC286_FIXUP_SONY_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x10cf, 0x1475, "Lifebook", ALC269_FIXUP_LIFEBOOK),
 	SND_PCI_QUIRK(0x10cf, 0x159f, "Lifebook E780", ALC269_FIXUP_LIFEBOOK_NO_HP_TO_LINEOUT),
 	SND_PCI_QUIRK(0x10cf, 0x15dc, "Lifebook T731", ALC269_FIXUP_LIFEBOOK_HP_PIN),



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 089/240] ALSA: hda/realtek: Re-order ALC269 Lenovo quirk table entries
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (87 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 088/240] ALSA: hda/realtek: Re-order ALC269 " Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 090/240] ALSA: hda/realtek: Remove redundant entry for ALC861 Haier/Uniwill devices Greg Kroah-Hartman
                   ` (155 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Takashi Iwai

From: Takashi Iwai <tiwai@suse.de>

commit f552ff54c2a700616a02b038e4bf3cbf859f65b7 upstream.

Just re-order the alc269_fixup_tbl[] entries for Lenovo devices for
avoiding the oversight of the duplicated or unapplied item in future.
No functional changes.

Also Cc-to-stable for the further patch applications.

Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210428112704.23967-10-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 sound/pci/hda/patch_realtek.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -5841,9 +5841,9 @@ static const struct snd_pci_quirk alc269
 	SND_PCI_QUIRK(0x17aa, 0x21b8, "Thinkpad Edge 14", ALC269_FIXUP_SKU_IGNORE),
 	SND_PCI_QUIRK(0x17aa, 0x21ca, "Thinkpad L412", ALC269_FIXUP_SKU_IGNORE),
 	SND_PCI_QUIRK(0x17aa, 0x21e9, "Thinkpad Edge 15", ALC269_FIXUP_SKU_IGNORE),
+	SND_PCI_QUIRK(0x17aa, 0x21f3, "Thinkpad T430", ALC269_FIXUP_LENOVO_DOCK),
 	SND_PCI_QUIRK(0x17aa, 0x21f6, "Thinkpad T530", ALC269_FIXUP_LENOVO_DOCK_LIMIT_BOOST),
 	SND_PCI_QUIRK(0x17aa, 0x21fa, "Thinkpad X230", ALC269_FIXUP_LENOVO_DOCK),
-	SND_PCI_QUIRK(0x17aa, 0x21f3, "Thinkpad T430", ALC269_FIXUP_LENOVO_DOCK),
 	SND_PCI_QUIRK(0x17aa, 0x21fb, "Thinkpad T430s", ALC269_FIXUP_LENOVO_DOCK),
 	SND_PCI_QUIRK(0x17aa, 0x2203, "Thinkpad X230 Tablet", ALC269_FIXUP_LENOVO_DOCK),
 	SND_PCI_QUIRK(0x17aa, 0x2208, "Thinkpad T431s", ALC269_FIXUP_LENOVO_DOCK),
@@ -5875,6 +5875,7 @@ static const struct snd_pci_quirk alc269
 	SND_PCI_QUIRK(0x17aa, 0x3902, "Lenovo E50-80", ALC269_FIXUP_DMIC_THINKPAD_ACPI),
 	SND_PCI_QUIRK(0x17aa, 0x3977, "IdeaPad S210", ALC283_FIXUP_INT_MIC),
 	SND_PCI_QUIRK(0x17aa, 0x3978, "Lenovo B50-70", ALC269_FIXUP_DMIC_THINKPAD_ACPI),
+	SND_PCI_QUIRK(0x17aa, 0x3bf8, "Quanta FL1", ALC269_FIXUP_PCM_44K),
 	SND_PCI_QUIRK(0x17aa, 0x5013, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
 	SND_PCI_QUIRK(0x17aa, 0x501a, "Thinkpad", ALC283_FIXUP_INT_MIC),
 	SND_PCI_QUIRK(0x17aa, 0x501e, "Thinkpad L440", ALC292_FIXUP_TPT440_DOCK),
@@ -5893,7 +5894,6 @@ static const struct snd_pci_quirk alc269
 	SND_PCI_QUIRK(0x17aa, 0x5109, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
 	SND_PCI_QUIRK(0x17aa, 0x511e, "Thinkpad", ALC298_FIXUP_TPT470_DOCK),
 	SND_PCI_QUIRK(0x17aa, 0x511f, "Thinkpad", ALC298_FIXUP_TPT470_DOCK),
-	SND_PCI_QUIRK(0x17aa, 0x3bf8, "Quanta FL1", ALC269_FIXUP_PCM_44K),
 	SND_PCI_QUIRK(0x17aa, 0x9e54, "LENOVO NB", ALC269_FIXUP_LENOVO_EAPD),
 	SND_PCI_QUIRK(0x1b7d, 0xa831, "Ordissimo EVE2 ", ALC269VB_FIXUP_ORDISSIMO_EVE2), /* Also known as Malata PC-B1303 */
 



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 090/240] ALSA: hda/realtek: Remove redundant entry for ALC861 Haier/Uniwill devices
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (88 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 089/240] ALSA: hda/realtek: Re-order ALC269 Lenovo " Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 091/240] usb: gadget: pch_udc: Revert d3cb25a12138 completely Greg Kroah-Hartman
                   ` (154 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Takashi Iwai

From: Takashi Iwai <tiwai@suse.de>

commit defce244b01ee12534910a4544e11be5eb927d25 upstream.

The quirk entry for Uniwill ECS M31EI is with the PCI SSID device 0,
which means matching with all.  That is, it's essentially equivalent
with SND_PCI_QUIRK_VENDOR(0x1584), which also matches with the
previous entry for Haier W18 applying the very same quirk.

Let's unify them with the single vendor-quirk entry.

Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210428112704.23967-13-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 sound/pci/hda/patch_realtek.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -6569,8 +6569,7 @@ static const struct snd_pci_quirk alc861
 	SND_PCI_QUIRK(0x1043, 0x1393, "ASUS A6Rp", ALC861_FIXUP_ASUS_A6RP),
 	SND_PCI_QUIRK_VENDOR(0x1043, "ASUS laptop", ALC861_FIXUP_AMP_VREF_0F),
 	SND_PCI_QUIRK(0x1462, 0x7254, "HP DX2200", ALC861_FIXUP_NO_JACK_DETECT),
-	SND_PCI_QUIRK(0x1584, 0x2b01, "Haier W18", ALC861_FIXUP_AMP_VREF_0F),
-	SND_PCI_QUIRK(0x1584, 0x0000, "Uniwill ECS M31EI", ALC861_FIXUP_AMP_VREF_0F),
+	SND_PCI_QUIRK_VENDOR(0x1584, "Haier/Uniwill", ALC861_FIXUP_AMP_VREF_0F),
 	SND_PCI_QUIRK(0x1734, 0x10c7, "FSC Amilo Pi1505", ALC861_FIXUP_FSC_AMILO_PI1505),
 	{}
 };



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 091/240] usb: gadget: pch_udc: Revert d3cb25a12138 completely
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (89 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 090/240] ALSA: hda/realtek: Remove redundant entry for ALC861 Haier/Uniwill devices Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 092/240] memory: gpmc: fix out of bounds read and dereference on gpmc_cs[] Greg Kroah-Hartman
                   ` (153 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Iago Abal, Andy Shevchenko

From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

commit 50a318cc9b54a36f00beadf77e578a50f3620477 upstream.

The commit d3cb25a12138 ("usb: gadget: udc: fix spin_lock in pch_udc")
obviously was not thought through and had made the situation even worse
than it was before. Two changes after almost reverted it. but a few
leftovers have been left as it. With this revert d3cb25a12138 completely.

While at it, narrow down the scope of unlocked section to prevent
potential race when prot_stall is assigned.

Fixes: d3cb25a12138 ("usb: gadget: udc: fix spin_lock in pch_udc")
Fixes: 9903b6bedd38 ("usb: gadget: pch-udc: fix lock")
Fixes: 1d23d16a88e6 ("usb: gadget: pch_udc: reorder spin_[un]lock to avoid deadlock")
Cc: Iago Abal <mail@iagoabal.eu>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210323153626.54908-5-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/usb/gadget/udc/pch_udc.c |   17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

--- a/drivers/usb/gadget/udc/pch_udc.c
+++ b/drivers/usb/gadget/udc/pch_udc.c
@@ -604,18 +604,22 @@ static void pch_udc_reconnect(struct pch
 static inline void pch_udc_vbus_session(struct pch_udc_dev *dev,
 					  int is_active)
 {
+	unsigned long		iflags;
+
+	spin_lock_irqsave(&dev->lock, iflags);
 	if (is_active) {
 		pch_udc_reconnect(dev);
 		dev->vbus_session = 1;
 	} else {
 		if (dev->driver && dev->driver->disconnect) {
-			spin_lock(&dev->lock);
+			spin_unlock_irqrestore(&dev->lock, iflags);
 			dev->driver->disconnect(&dev->gadget);
-			spin_unlock(&dev->lock);
+			spin_lock_irqsave(&dev->lock, iflags);
 		}
 		pch_udc_set_disconnect(dev);
 		dev->vbus_session = 0;
 	}
+	spin_unlock_irqrestore(&dev->lock, iflags);
 }
 
 /**
@@ -1172,20 +1176,25 @@ static int pch_udc_pcd_selfpowered(struc
 static int pch_udc_pcd_pullup(struct usb_gadget *gadget, int is_on)
 {
 	struct pch_udc_dev	*dev;
+	unsigned long		iflags;
 
 	if (!gadget)
 		return -EINVAL;
+
 	dev = container_of(gadget, struct pch_udc_dev, gadget);
+
+	spin_lock_irqsave(&dev->lock, iflags);
 	if (is_on) {
 		pch_udc_reconnect(dev);
 	} else {
 		if (dev->driver && dev->driver->disconnect) {
-			spin_lock(&dev->lock);
+			spin_unlock_irqrestore(&dev->lock, iflags);
 			dev->driver->disconnect(&dev->gadget);
-			spin_unlock(&dev->lock);
+			spin_lock_irqsave(&dev->lock, iflags);
 		}
 		pch_udc_set_disconnect(dev);
 	}
+	spin_unlock_irqrestore(&dev->lock, iflags);
 
 	return 0;
 }



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 092/240] memory: gpmc: fix out of bounds read and dereference on gpmc_cs[]
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (90 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 091/240] usb: gadget: pch_udc: Revert d3cb25a12138 completely Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 093/240] ARM: dts: exynos: correct PMIC interrupt trigger level on SMDK5250 Greg Kroah-Hartman
                   ` (152 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Colin Ian King, Tony Lindgren,
	Krzysztof Kozlowski, Sasha Levin

From: Colin Ian King <colin.king@canonical.com>

[ Upstream commit e004c3e67b6459c99285b18366a71af467d869f5 ]

Currently the array gpmc_cs is indexed by cs before it cs is range checked
and the pointer read from this out-of-index read is dereferenced. Fix this
by performing the range check on cs before the read and the following
pointer dereference.

Addresses-Coverity: ("Negative array index read")
Fixes: 9ed7a776eb50 ("ARM: OMAP2+: Fix support for multiple devices on a GPMC chip select")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20210223193821.17232-1-colin.king@canonical.com
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/memory/omap-gpmc.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/memory/omap-gpmc.c b/drivers/memory/omap-gpmc.c
index a9d47c06f80f..4af2f5b231dd 100644
--- a/drivers/memory/omap-gpmc.c
+++ b/drivers/memory/omap-gpmc.c
@@ -1028,8 +1028,8 @@ EXPORT_SYMBOL(gpmc_cs_request);
 
 void gpmc_cs_free(int cs)
 {
-	struct gpmc_cs_data *gpmc = &gpmc_cs[cs];
-	struct resource *res = &gpmc->mem;
+	struct gpmc_cs_data *gpmc;
+	struct resource *res;
 
 	spin_lock(&gpmc_mem_lock);
 	if (cs >= gpmc_cs_num || cs < 0 || !gpmc_cs_reserved(cs)) {
@@ -1038,6 +1038,9 @@ void gpmc_cs_free(int cs)
 		spin_unlock(&gpmc_mem_lock);
 		return;
 	}
+	gpmc = &gpmc_cs[cs];
+	res = &gpmc->mem;
+
 	gpmc_cs_disable_mem(cs);
 	if (res->flags)
 		release_resource(res);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 093/240] ARM: dts: exynos: correct PMIC interrupt trigger level on SMDK5250
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (91 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 092/240] memory: gpmc: fix out of bounds read and dereference on gpmc_cs[] Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 094/240] ARM: dts: exynos: correct PMIC interrupt trigger level on Snow Greg Kroah-Hartman
                   ` (151 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Krzysztof Kozlowski, Sasha Levin

From: Krzysztof Kozlowski <krzk@kernel.org>

[ Upstream commit f6368c60561370e4a92fac22982a3bd656172170 ]

The Maxim PMIC datasheets describe the interrupt line as active low
with a requirement of acknowledge from the CPU.  Without specifying the
interrupt type in Devicetree, kernel might apply some fixed
configuration, not necessarily working for this hardware.

Additionally, the interrupt line is shared so using level sensitive
interrupt is here especially important to avoid races.

Fixes: 47580e8d94c2 ("ARM: dts: Specify MAX77686 pmic interrupt for exynos5250-smdk5250")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20201210212534.216197-8-krzk@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/boot/dts/exynos5250-smdk5250.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/exynos5250-smdk5250.dts b/arch/arm/boot/dts/exynos5250-smdk5250.dts
index a97a785ccc6b..f0906d67a107 100644
--- a/arch/arm/boot/dts/exynos5250-smdk5250.dts
+++ b/arch/arm/boot/dts/exynos5250-smdk5250.dts
@@ -134,7 +134,7 @@
 		compatible = "maxim,max77686";
 		reg = <0x09>;
 		interrupt-parent = <&gpx3>;
-		interrupts = <2 IRQ_TYPE_NONE>;
+		interrupts = <2 IRQ_TYPE_LEVEL_LOW>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&max77686_irq>;
 		wakeup-source;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 094/240] ARM: dts: exynos: correct PMIC interrupt trigger level on Snow
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (92 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 093/240] ARM: dts: exynos: correct PMIC interrupt trigger level on SMDK5250 Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 095/240] serial: stm32: fix incorrect characters on console Greg Kroah-Hartman
                   ` (150 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Krzysztof Kozlowski, Sasha Levin

From: Krzysztof Kozlowski <krzk@kernel.org>

[ Upstream commit 8987efbb17c2522be8615085df9a14da2ab53d34 ]

The Maxim PMIC datasheets describe the interrupt line as active low
with a requirement of acknowledge from the CPU.  Without specifying the
interrupt type in Devicetree, kernel might apply some fixed
configuration, not necessarily working for this hardware.

Additionally, the interrupt line is shared so using level sensitive
interrupt is here especially important to avoid races.

Fixes: c61248afa819 ("ARM: dts: Add max77686 RTC interrupt to cros5250-common")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20201210212534.216197-9-krzk@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/boot/dts/exynos5250-snow-common.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/exynos5250-snow-common.dtsi b/arch/arm/boot/dts/exynos5250-snow-common.dtsi
index d5d51916bb74..b24a77781e75 100644
--- a/arch/arm/boot/dts/exynos5250-snow-common.dtsi
+++ b/arch/arm/boot/dts/exynos5250-snow-common.dtsi
@@ -280,7 +280,7 @@
 	max77686: max77686@09 {
 		compatible = "maxim,max77686";
 		interrupt-parent = <&gpx3>;
-		interrupts = <2 IRQ_TYPE_NONE>;
+		interrupts = <2 IRQ_TYPE_LEVEL_LOW>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&max77686_irq>;
 		wakeup-source;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 095/240] serial: stm32: fix incorrect characters on console
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (93 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 094/240] ARM: dts: exynos: correct PMIC interrupt trigger level on Snow Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 096/240] usb: gadget: pch_udc: Replace cpu_to_le32() by lower_32_bits() Greg Kroah-Hartman
                   ` (149 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Erwan Le Ray, Sasha Levin

From: Erwan Le Ray <erwan.leray@foss.st.com>

[ Upstream commit f264c6f6aece81a9f8fbdf912b20bd3feb476a7a ]

Incorrect characters are observed on console during boot. This issue occurs
when init/main.c is modifying termios settings to open /dev/console on the
rootfs.

This patch adds a waiting loop in set_termios to wait for TX shift register
empty (and TX FIFO if any) before stopping serial port.

Fixes: 48a6092fb41f ("serial: stm32-usart: Add STM32 USART Driver")
Signed-off-by: Erwan Le Ray <erwan.leray@foss.st.com>
Link: https://lore.kernel.org/r/20210304162308.8984-4-erwan.leray@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/tty/serial/stm32-usart.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c
index ea8b591dd46f..f325019887b2 100644
--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c
@@ -476,8 +476,9 @@ static void stm32_set_termios(struct uart_port *port, struct ktermios *termios,
 	unsigned int baud;
 	u32 usartdiv, mantissa, fraction, oversampling;
 	tcflag_t cflag = termios->c_cflag;
-	u32 cr1, cr2, cr3;
+	u32 cr1, cr2, cr3, isr;
 	unsigned long flags;
+	int ret;
 
 	if (!stm32_port->hw_flow_control)
 		cflag &= ~CRTSCTS;
@@ -486,6 +487,15 @@ static void stm32_set_termios(struct uart_port *port, struct ktermios *termios,
 
 	spin_lock_irqsave(&port->lock, flags);
 
+	ret = readl_relaxed_poll_timeout_atomic(port->membase + ofs->isr,
+						isr,
+						(isr & USART_SR_TC),
+						10, 100000);
+
+	/* Send the TC error message only when ISR_TC is not set. */
+	if (ret)
+		dev_err(port->dev, "Transmission is not complete\n");
+
 	/* Stop serial port and reset value */
 	writel_relaxed(0, port->membase + ofs->cr1);
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 096/240] usb: gadget: pch_udc: Replace cpu_to_le32() by lower_32_bits()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (94 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 095/240] serial: stm32: fix incorrect characters on console Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 097/240] usb: gadget: pch_udc: Check if driver is present before calling ->setup() Greg Kroah-Hartman
                   ` (148 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Andy Shevchenko, Sasha Levin

From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

[ Upstream commit 91356fed6afd1c83bf0d3df1fc336d54e38f0458 ]

Either way ~0 will be in the correct byte order, hence
replace cpu_to_le32() by lower_32_bits(). Moreover,
it makes sparse happy, otherwise it complains:

.../pch_udc.c:1813:27: warning: incorrect type in assignment (different base types)
.../pch_udc.c:1813:27:    expected unsigned int [usertype] dataptr
.../pch_udc.c:1813:27:    got restricted __le32 [usertype]

Fixes: f646cf94520e ("USB device driver of Topcliff PCH")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210323153626.54908-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/gadget/udc/pch_udc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/udc/pch_udc.c b/drivers/usb/gadget/udc/pch_udc.c
index fe0887578117..b143830285f6 100644
--- a/drivers/usb/gadget/udc/pch_udc.c
+++ b/drivers/usb/gadget/udc/pch_udc.c
@@ -1786,7 +1786,7 @@ static struct usb_request *pch_udc_alloc_request(struct usb_ep *usbep,
 	}
 	/* prevent from using desc. - set HOST BUSY */
 	dma_desc->status |= PCH_UDC_BS_HST_BSY;
-	dma_desc->dataptr = cpu_to_le32(DMA_ADDR_INVALID);
+	dma_desc->dataptr = lower_32_bits(DMA_ADDR_INVALID);
 	req->td_data = dma_desc;
 	req->td_data_last = dma_desc;
 	req->chain_len = 1;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 097/240] usb: gadget: pch_udc: Check if driver is present before calling ->setup()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (95 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 096/240] usb: gadget: pch_udc: Replace cpu_to_le32() by lower_32_bits() Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 098/240] usb: gadget: pch_udc: Check for DMA mapping error Greg Kroah-Hartman
                   ` (147 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Andy Shevchenko, Sasha Levin

From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

[ Upstream commit fbdbbe6d3ee502b3bdeb4f255196bb45003614be ]

Since we have a separate routine for VBUS sense, the interrupt may occur
before gadget driver is present. Hence, ->setup() call may oops the kernel:

[   55.245843] BUG: kernel NULL pointer dereference, address: 00000010
...
[   55.245843] EIP: pch_udc_isr.cold+0x162/0x33f
...
[   55.245843]  <IRQ>
[   55.245843]  ? pch_udc_svc_data_out+0x160/0x160

Check if driver is present before calling ->setup().

Fixes: f646cf94520e ("USB device driver of Topcliff PCH")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210323153626.54908-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/gadget/udc/pch_udc.c | 28 ++++++++++++++++++----------
 1 file changed, 18 insertions(+), 10 deletions(-)

diff --git a/drivers/usb/gadget/udc/pch_udc.c b/drivers/usb/gadget/udc/pch_udc.c
index b143830285f6..2363e3f66647 100644
--- a/drivers/usb/gadget/udc/pch_udc.c
+++ b/drivers/usb/gadget/udc/pch_udc.c
@@ -2329,6 +2329,21 @@ static void pch_udc_svc_data_out(struct pch_udc_dev *dev, int ep_num)
 		pch_udc_set_dma(dev, DMA_DIR_RX);
 }
 
+static int pch_udc_gadget_setup(struct pch_udc_dev *dev)
+	__must_hold(&dev->lock)
+{
+	int rc;
+
+	/* In some cases we can get an interrupt before driver gets setup */
+	if (!dev->driver)
+		return -ESHUTDOWN;
+
+	spin_unlock(&dev->lock);
+	rc = dev->driver->setup(&dev->gadget, &dev->setup_data);
+	spin_lock(&dev->lock);
+	return rc;
+}
+
 /**
  * pch_udc_svc_control_in() - Handle Control IN endpoint interrupts
  * @dev:	Reference to the device structure
@@ -2400,15 +2415,12 @@ static void pch_udc_svc_control_out(struct pch_udc_dev *dev)
 			dev->gadget.ep0 = &dev->ep[UDC_EP0IN_IDX].ep;
 		else /* OUT */
 			dev->gadget.ep0 = &ep->ep;
-		spin_lock(&dev->lock);
 		/* If Mass storage Reset */
 		if ((dev->setup_data.bRequestType == 0x21) &&
 		    (dev->setup_data.bRequest == 0xFF))
 			dev->prot_stall = 0;
 		/* call gadget with setup data received */
-		setup_supported = dev->driver->setup(&dev->gadget,
-						     &dev->setup_data);
-		spin_unlock(&dev->lock);
+		setup_supported = pch_udc_gadget_setup(dev);
 
 		if (dev->setup_data.bRequestType & USB_DIR_IN) {
 			ep->td_data->status = (ep->td_data->status &
@@ -2656,9 +2668,7 @@ static void pch_udc_svc_intf_interrupt(struct pch_udc_dev *dev)
 		dev->ep[i].halted = 0;
 	}
 	dev->stall = 0;
-	spin_unlock(&dev->lock);
-	dev->driver->setup(&dev->gadget, &dev->setup_data);
-	spin_lock(&dev->lock);
+	pch_udc_gadget_setup(dev);
 }
 
 /**
@@ -2693,9 +2703,7 @@ static void pch_udc_svc_cfg_interrupt(struct pch_udc_dev *dev)
 	dev->stall = 0;
 
 	/* call gadget zero with setup data received */
-	spin_unlock(&dev->lock);
-	dev->driver->setup(&dev->gadget, &dev->setup_data);
-	spin_lock(&dev->lock);
+	pch_udc_gadget_setup(dev);
 }
 
 /**
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 098/240] usb: gadget: pch_udc: Check for DMA mapping error
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (96 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 097/240] usb: gadget: pch_udc: Check if driver is present before calling ->setup() Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 099/240] crypto: qat - dont release uninitialized resources Greg Kroah-Hartman
                   ` (146 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Andy Shevchenko, Sasha Levin

From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

[ Upstream commit 4a28d77e359009b846951b06f7c0d8eec8dce298 ]

DMA mapping might fail, we have to check it with dma_mapping_error().
Otherwise DMA-API is not happy:

  DMA-API: pch_udc 0000:02:02.4: device driver failed to check map error[device address=0x00000000027ee678] [size=64 bytes] [mapped as single]

Fixes: abab0c67c061 ("usb: pch_udc: Fixed issue which does not work with g_serial")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210323153626.54908-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/gadget/udc/pch_udc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/udc/pch_udc.c b/drivers/usb/gadget/udc/pch_udc.c
index 2363e3f66647..18ce19162804 100644
--- a/drivers/usb/gadget/udc/pch_udc.c
+++ b/drivers/usb/gadget/udc/pch_udc.c
@@ -2977,7 +2977,7 @@ static int init_dma_pools(struct pch_udc_dev *dev)
 	dev->dma_addr = dma_map_single(&dev->pdev->dev, ep0out_buf,
 				       UDC_EP0OUT_BUFF_SIZE * 4,
 				       DMA_FROM_DEVICE);
-	return 0;
+	return dma_mapping_error(&dev->pdev->dev, dev->dma_addr);
 }
 
 static int pch_udc_start(struct usb_gadget *g,
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 099/240] crypto: qat - dont release uninitialized resources
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (97 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 098/240] usb: gadget: pch_udc: Check for DMA mapping error Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 100/240] crypto: qat - ADF_STATUS_PF_RUNNING should be set after adf_dev_init Greg Kroah-Hartman
                   ` (145 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Tong Zhang, Andy Shevchenko,
	Giovanni Cabiddu, Herbert Xu, Sasha Levin

From: Tong Zhang <ztong0001@gmail.com>

[ Upstream commit b66accaab3791e15ac99c92f236d0d3a6d5bd64e ]

adf_vf_isr_resource_alloc() is not unwinding correctly when error
happens and it want to release uninitialized resources.
To fix this, only release initialized resources.

[    1.792845] Trying to free already-free IRQ 11
[    1.793091] WARNING: CPU: 0 PID: 182 at kernel/irq/manage.c:1821 free_irq+0x202/0x380
[    1.801340] Call Trace:
[    1.801477]  adf_vf_isr_resource_free+0x32/0xb0 [intel_qat]
[    1.801785]  adf_vf_isr_resource_alloc+0x14d/0x150 [intel_qat]
[    1.802105]  adf_dev_init+0xba/0x140 [intel_qat]

Signed-off-by: Tong Zhang <ztong0001@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Fixes: dd0f368398ea ("crypto: qat - Add qat dh895xcc VF driver")
Acked-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/crypto/qat/qat_common/adf_vf_isr.c | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/drivers/crypto/qat/qat_common/adf_vf_isr.c b/drivers/crypto/qat/qat_common/adf_vf_isr.c
index bf99e11a3403..4c1217ba83ae 100644
--- a/drivers/crypto/qat/qat_common/adf_vf_isr.c
+++ b/drivers/crypto/qat/qat_common/adf_vf_isr.c
@@ -304,17 +304,26 @@ int adf_vf_isr_resource_alloc(struct adf_accel_dev *accel_dev)
 		goto err_out;
 
 	if (adf_setup_pf2vf_bh(accel_dev))
-		goto err_out;
+		goto err_disable_msi;
 
 	if (adf_setup_bh(accel_dev))
-		goto err_out;
+		goto err_cleanup_pf2vf_bh;
 
 	if (adf_request_msi_irq(accel_dev))
-		goto err_out;
+		goto err_cleanup_bh;
 
 	return 0;
+
+err_cleanup_bh:
+	adf_cleanup_bh(accel_dev);
+
+err_cleanup_pf2vf_bh:
+	adf_cleanup_pf2vf_bh(accel_dev);
+
+err_disable_msi:
+	adf_disable_msi(accel_dev);
+
 err_out:
-	adf_vf_isr_resource_free(accel_dev);
 	return -EFAULT;
 }
 EXPORT_SYMBOL_GPL(adf_vf_isr_resource_alloc);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 100/240] crypto: qat - ADF_STATUS_PF_RUNNING should be set after adf_dev_init
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (98 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 099/240] crypto: qat - dont release uninitialized resources Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 101/240] fotg210-udc: Fix DMA on EP0 for length > max packet size Greg Kroah-Hartman
                   ` (144 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Tong Zhang, Andy Shevchenko,
	Giovanni Cabiddu, Herbert Xu, Sasha Levin

From: Tong Zhang <ztong0001@gmail.com>

[ Upstream commit 8609f5cfdc872fc3a462efa6a3eca5cb1e2f6446 ]

ADF_STATUS_PF_RUNNING is (only) used and checked by adf_vf2pf_shutdown()
before calling adf_iov_putmsg()->mutex_lock(vf2pf_lock), however the
vf2pf_lock is initialized in adf_dev_init(), which can fail and when it
fail, the vf2pf_lock is either not initialized or destroyed, a subsequent
use of vf2pf_lock will cause issue.
To fix this issue, only set this flag if adf_dev_init() returns 0.

[    7.178404] BUG: KASAN: user-memory-access in __mutex_lock.isra.0+0x1ac/0x7c0
[    7.180345] Call Trace:
[    7.182576]  mutex_lock+0xc9/0xd0
[    7.183257]  adf_iov_putmsg+0x118/0x1a0 [intel_qat]
[    7.183541]  adf_vf2pf_shutdown+0x4d/0x7b [intel_qat]
[    7.183834]  adf_dev_shutdown+0x172/0x2b0 [intel_qat]
[    7.184127]  adf_probe+0x5e9/0x600 [qat_dh895xccvf]

Signed-off-by: Tong Zhang <ztong0001@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Fixes: 25c6ffb249f6 ("crypto: qat - check if PF is running")
Acked-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/crypto/qat/qat_c3xxxvf/adf_drv.c    | 4 ++--
 drivers/crypto/qat/qat_c62xvf/adf_drv.c     | 4 ++--
 drivers/crypto/qat/qat_dh895xccvf/adf_drv.c | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/crypto/qat/qat_c3xxxvf/adf_drv.c b/drivers/crypto/qat/qat_c3xxxvf/adf_drv.c
index 0dd8d2dc2ec1..26931325dfa2 100644
--- a/drivers/crypto/qat/qat_c3xxxvf/adf_drv.c
+++ b/drivers/crypto/qat/qat_c3xxxvf/adf_drv.c
@@ -238,12 +238,12 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (ret)
 		goto out_err_free_reg;
 
-	set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
-
 	ret = adf_dev_init(accel_dev);
 	if (ret)
 		goto out_err_dev_shutdown;
 
+	set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
+
 	ret = adf_dev_start(accel_dev);
 	if (ret)
 		goto out_err_dev_stop;
diff --git a/drivers/crypto/qat/qat_c62xvf/adf_drv.c b/drivers/crypto/qat/qat_c62xvf/adf_drv.c
index cd9e63468b18..722a06aac9fa 100644
--- a/drivers/crypto/qat/qat_c62xvf/adf_drv.c
+++ b/drivers/crypto/qat/qat_c62xvf/adf_drv.c
@@ -238,12 +238,12 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (ret)
 		goto out_err_free_reg;
 
-	set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
-
 	ret = adf_dev_init(accel_dev);
 	if (ret)
 		goto out_err_dev_shutdown;
 
+	set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
+
 	ret = adf_dev_start(accel_dev);
 	if (ret)
 		goto out_err_dev_stop;
diff --git a/drivers/crypto/qat/qat_dh895xccvf/adf_drv.c b/drivers/crypto/qat/qat_dh895xccvf/adf_drv.c
index 15de9cbed3bf..cc3f5171a523 100644
--- a/drivers/crypto/qat/qat_dh895xccvf/adf_drv.c
+++ b/drivers/crypto/qat/qat_dh895xccvf/adf_drv.c
@@ -238,12 +238,12 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (ret)
 		goto out_err_free_reg;
 
-	set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
-
 	ret = adf_dev_init(accel_dev);
 	if (ret)
 		goto out_err_dev_shutdown;
 
+	set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
+
 	ret = adf_dev_start(accel_dev);
 	if (ret)
 		goto out_err_dev_stop;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 101/240] fotg210-udc: Fix DMA on EP0 for length > max packet size
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (99 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 100/240] crypto: qat - ADF_STATUS_PF_RUNNING should be set after adf_dev_init Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 102/240] fotg210-udc: Fix EP0 IN requests bigger than two packets Greg Kroah-Hartman
                   ` (143 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Fabian Vogt, Sasha Levin

From: Fabian Vogt <fabian@ritter-vogt.de>

[ Upstream commit 755915fc28edfc608fa89a163014acb2f31c1e19 ]

For a 75 Byte request, it would send the first 64 separately, then detect
that the remaining 11 Byte fit into a single DMA, but due to this bug set
the length to the original 75 Bytes. This leads to a DMA failure (which is
ignored...) and the request completes without the remaining bytes having
been sent.

Fixes: b84a8dee23fd ("usb: gadget: add Faraday fotg210_udc driver")
Signed-off-by: Fabian Vogt <fabian@ritter-vogt.de>
Link: https://lore.kernel.org/r/20210324141115.9384-2-fabian@ritter-vogt.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/gadget/udc/fotg210-udc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/udc/fotg210-udc.c b/drivers/usb/gadget/udc/fotg210-udc.c
index 76e991557116..7831c556a40b 100644
--- a/drivers/usb/gadget/udc/fotg210-udc.c
+++ b/drivers/usb/gadget/udc/fotg210-udc.c
@@ -348,7 +348,7 @@ static void fotg210_start_dma(struct fotg210_ep *ep,
 		if (req->req.length - req->req.actual > ep->ep.maxpacket)
 			length = ep->ep.maxpacket;
 		else
-			length = req->req.length;
+			length = req->req.length - req->req.actual;
 	}
 
 	d = dma_map_single(NULL, buffer, length,
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 102/240] fotg210-udc: Fix EP0 IN requests bigger than two packets
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (100 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 101/240] fotg210-udc: Fix DMA on EP0 for length > max packet size Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 103/240] fotg210-udc: Remove a dubious condition leading to fotg210_done Greg Kroah-Hartman
                   ` (142 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Fabian Vogt, Sasha Levin

From: Fabian Vogt <fabian@ritter-vogt.de>

[ Upstream commit 078ba935651e149c92c41161e0322e3372cc2705 ]

For a 134 Byte packet, it sends the first two 64 Byte packets just fine,
but then notice that less than a packet is remaining and call fotg210_done
without actually sending the rest.

Fixes: b84a8dee23fd ("usb: gadget: add Faraday fotg210_udc driver")
Signed-off-by: Fabian Vogt <fabian@ritter-vogt.de>
Link: https://lore.kernel.org/r/20210324141115.9384-3-fabian@ritter-vogt.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/gadget/udc/fotg210-udc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/udc/fotg210-udc.c b/drivers/usb/gadget/udc/fotg210-udc.c
index 7831c556a40b..1eda6fc750c1 100644
--- a/drivers/usb/gadget/udc/fotg210-udc.c
+++ b/drivers/usb/gadget/udc/fotg210-udc.c
@@ -827,7 +827,7 @@ static void fotg210_ep0in(struct fotg210_udc *fotg210)
 		if (req->req.length)
 			fotg210_start_dma(ep, req);
 
-		if ((req->req.length - req->req.actual) < ep->ep.maxpacket)
+		if (req->req.actual == req->req.length)
 			fotg210_done(ep, req, 0);
 	} else {
 		fotg210_set_cxdone(fotg210);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 103/240] fotg210-udc: Remove a dubious condition leading to fotg210_done
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (101 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 102/240] fotg210-udc: Fix EP0 IN requests bigger than two packets Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 104/240] fotg210-udc: Mask GRP2 interrupts we dont handle Greg Kroah-Hartman
                   ` (141 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Fabian Vogt, Sasha Levin

From: Fabian Vogt <fabian@ritter-vogt.de>

[ Upstream commit c7f755b243494d6043aadcd9a2989cb157958b95 ]

When the EP0 IN request was not completed but less than a packet sent,
it would complete the request successfully. That doesn't make sense
and can't really happen as fotg210_start_dma always sends
min(length, maxpkt) bytes.

Fixes: b84a8dee23fd ("usb: gadget: add Faraday fotg210_udc driver")
Signed-off-by: Fabian Vogt <fabian@ritter-vogt.de>
Link: https://lore.kernel.org/r/20210324141115.9384-4-fabian@ritter-vogt.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/gadget/udc/fotg210-udc.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/usb/gadget/udc/fotg210-udc.c b/drivers/usb/gadget/udc/fotg210-udc.c
index 1eda6fc750c1..d0a9ce7d0635 100644
--- a/drivers/usb/gadget/udc/fotg210-udc.c
+++ b/drivers/usb/gadget/udc/fotg210-udc.c
@@ -385,8 +385,7 @@ static void fotg210_ep0_queue(struct fotg210_ep *ep,
 	}
 	if (ep->dir_in) { /* if IN */
 		fotg210_start_dma(ep, req);
-		if ((req->req.length == req->req.actual) ||
-		    (req->req.actual < ep->ep.maxpacket))
+		if (req->req.length == req->req.actual)
 			fotg210_done(ep, req, 0);
 	} else { /* OUT */
 		u32 value = ioread32(ep->fotg210->reg + FOTG210_DMISGR0);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 104/240] fotg210-udc: Mask GRP2 interrupts we dont handle
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (102 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 103/240] fotg210-udc: Remove a dubious condition leading to fotg210_done Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 105/240] fotg210-udc: Dont DMA more than the buffer can take Greg Kroah-Hartman
                   ` (140 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Fabian Vogt, Sasha Levin

From: Fabian Vogt <fabian@ritter-vogt.de>

[ Upstream commit 9aee3a23d6455200702f3a57e731fa11e8408667 ]

Currently it leaves unhandled interrupts unmasked, but those are never
acked. In the case of a "device idle" interrupt, this leads to an
effectively frozen system until plugging it in.

Fixes: b84a8dee23fd ("usb: gadget: add Faraday fotg210_udc driver")
Signed-off-by: Fabian Vogt <fabian@ritter-vogt.de>
Link: https://lore.kernel.org/r/20210324141115.9384-5-fabian@ritter-vogt.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/gadget/udc/fotg210-udc.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/usb/gadget/udc/fotg210-udc.c b/drivers/usb/gadget/udc/fotg210-udc.c
index d0a9ce7d0635..491b04dd6db7 100644
--- a/drivers/usb/gadget/udc/fotg210-udc.c
+++ b/drivers/usb/gadget/udc/fotg210-udc.c
@@ -1033,6 +1033,12 @@ static void fotg210_init(struct fotg210_udc *fotg210)
 	value &= ~DMCR_GLINT_EN;
 	iowrite32(value, fotg210->reg + FOTG210_DMCR);
 
+	/* enable only grp2 irqs we handle */
+	iowrite32(~(DISGR2_DMA_ERROR | DISGR2_RX0BYTE_INT | DISGR2_TX0BYTE_INT
+		    | DISGR2_ISO_SEQ_ABORT_INT | DISGR2_ISO_SEQ_ERR_INT
+		    | DISGR2_RESM_INT | DISGR2_SUSP_INT | DISGR2_USBRST_INT),
+		  fotg210->reg + FOTG210_DMISGR2);
+
 	/* disable all fifo interrupt */
 	iowrite32(~(u32)0, fotg210->reg + FOTG210_DMISGR1);
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 105/240] fotg210-udc: Dont DMA more than the buffer can take
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (103 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 104/240] fotg210-udc: Mask GRP2 interrupts we dont handle Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 106/240] fotg210-udc: Complete OUT requests on short packets Greg Kroah-Hartman
                   ` (139 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Fabian Vogt, Sasha Levin

From: Fabian Vogt <fabian@ritter-vogt.de>

[ Upstream commit 3e7c2510bdfe89a9ec223dd7acd6bfc8bb1cbeb6 ]

Before this, it wrote as much as available into the buffer, even if it
didn't fit.

Fixes: b84a8dee23fd ("usb: gadget: add Faraday fotg210_udc driver")
Signed-off-by: Fabian Vogt <fabian@ritter-vogt.de>
Link: https://lore.kernel.org/r/20210324141115.9384-7-fabian@ritter-vogt.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/gadget/udc/fotg210-udc.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/gadget/udc/fotg210-udc.c b/drivers/usb/gadget/udc/fotg210-udc.c
index 491b04dd6db7..b2910bc65e51 100644
--- a/drivers/usb/gadget/udc/fotg210-udc.c
+++ b/drivers/usb/gadget/udc/fotg210-udc.c
@@ -340,8 +340,9 @@ static void fotg210_start_dma(struct fotg210_ep *ep,
 		} else {
 			buffer = req->req.buf + req->req.actual;
 			length = ioread32(ep->fotg210->reg +
-					FOTG210_FIBCR(ep->epnum - 1));
-			length &= FIBCR_BCFX;
+					FOTG210_FIBCR(ep->epnum - 1)) & FIBCR_BCFX;
+			if (length > req->req.length - req->req.actual)
+				length = req->req.length - req->req.actual;
 		}
 	} else {
 		buffer = req->req.buf + req->req.actual;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 106/240] fotg210-udc: Complete OUT requests on short packets
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (104 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 105/240] fotg210-udc: Dont DMA more than the buffer can take Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 107/240] mtd: require write permissions for locking and badblock ioctls Greg Kroah-Hartman
                   ` (138 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Fabian Vogt, Sasha Levin

From: Fabian Vogt <fabian@ritter-vogt.de>

[ Upstream commit 75bb93be0027123b5db6cbcce89eb62f0f6b3c5b ]

A short packet indicates the end of a transfer and marks the request as
complete.

Fixes: b84a8dee23fd ("usb: gadget: add Faraday fotg210_udc driver")
Signed-off-by: Fabian Vogt <fabian@ritter-vogt.de>
Link: https://lore.kernel.org/r/20210324141115.9384-8-fabian@ritter-vogt.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/gadget/udc/fotg210-udc.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/gadget/udc/fotg210-udc.c b/drivers/usb/gadget/udc/fotg210-udc.c
index b2910bc65e51..9e102ba9cf66 100644
--- a/drivers/usb/gadget/udc/fotg210-udc.c
+++ b/drivers/usb/gadget/udc/fotg210-udc.c
@@ -856,12 +856,16 @@ static void fotg210_out_fifo_handler(struct fotg210_ep *ep)
 {
 	struct fotg210_request *req = list_entry(ep->queue.next,
 						 struct fotg210_request, queue);
+	int disgr1 = ioread32(ep->fotg210->reg + FOTG210_DISGR1);
 
 	fotg210_start_dma(ep, req);
 
-	/* finish out transfer */
+	/* Complete the request when it's full or a short packet arrived.
+	 * Like other drivers, short_not_ok isn't handled.
+	 */
+
 	if (req->req.length == req->req.actual ||
-	    req->req.actual < ep->ep.maxpacket)
+	    (disgr1 & DISGR1_SPK_INT(ep->epnum - 1)))
 		fotg210_done(ep, req, 0);
 }
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 107/240] mtd: require write permissions for locking and badblock ioctls
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (105 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 106/240] fotg210-udc: Complete OUT requests on short packets Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 108/240] bus: qcom: Put child node before return Greg Kroah-Hartman
                   ` (137 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Michael Walle,
	Rafał Miłecki, Richard Weinberger, Miquel Raynal,
	Sasha Levin

From: Michael Walle <michael@walle.cc>

[ Upstream commit 1e97743fd180981bef5f01402342bb54bf1c6366 ]

MEMLOCK, MEMUNLOCK and OTPLOCK modify protection bits. Thus require
write permission. Depending on the hardware MEMLOCK might even be
write-once, e.g. for SPI-NOR flashes with their WP# tied to GND. OTPLOCK
is always write-once.

MEMSETBADBLOCK modifies the bad block table.

Fixes: f7e6b19bc764 ("mtd: properly check all write ioctls for permissions")
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210303155735.25887-1-michael@walle.cc
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/mtd/mtdchar.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index 331183548bc5..b43b8edc18ec 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -689,16 +689,12 @@ static int mtdchar_ioctl(struct file *file, u_int cmd, u_long arg)
 	case MEMGETINFO:
 	case MEMREADOOB:
 	case MEMREADOOB64:
-	case MEMLOCK:
-	case MEMUNLOCK:
 	case MEMISLOCKED:
 	case MEMGETOOBSEL:
 	case MEMGETBADBLOCK:
-	case MEMSETBADBLOCK:
 	case OTPSELECT:
 	case OTPGETREGIONCOUNT:
 	case OTPGETREGIONINFO:
-	case OTPLOCK:
 	case ECCGETLAYOUT:
 	case ECCGETSTATS:
 	case MTDFILEMODE:
@@ -709,9 +705,13 @@ static int mtdchar_ioctl(struct file *file, u_int cmd, u_long arg)
 	/* "dangerous" commands */
 	case MEMERASE:
 	case MEMERASE64:
+	case MEMLOCK:
+	case MEMUNLOCK:
+	case MEMSETBADBLOCK:
 	case MEMWRITEOOB:
 	case MEMWRITEOOB64:
 	case MEMWRITE:
+	case OTPLOCK:
 		if (!(file->f_mode & FMODE_WRITE))
 			return -EPERM;
 		break;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 108/240] bus: qcom: Put child node before return
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (106 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 107/240] mtd: require write permissions for locking and badblock ioctls Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 109/240] crypto: qat - fix error path in adf_isr_resource_alloc() Greg Kroah-Hartman
                   ` (136 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Linus Walleij, Pan Bian,
	Bjorn Andersson, Sasha Levin

From: Pan Bian <bianpan2016@163.com>

[ Upstream commit ac6ad7c2a862d682bb584a4bc904d89fa7721af8 ]

Put child node before return to fix potential reference count leak.
Generally, the reference count of child is incremented and decremented
automatically in the macro for_each_available_child_of_node() and should
be decremented manually if the loop is broken in loop body.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Fixes: 335a12754808 ("bus: qcom: add EBI2 driver")
Signed-off-by: Pan Bian <bianpan2016@163.com>
Link: https://lore.kernel.org/r/20210121114907.109267-1-bianpan2016@163.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/bus/qcom-ebi2.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/bus/qcom-ebi2.c b/drivers/bus/qcom-ebi2.c
index a6444244c411..bfb67aa00bec 100644
--- a/drivers/bus/qcom-ebi2.c
+++ b/drivers/bus/qcom-ebi2.c
@@ -357,8 +357,10 @@ static int qcom_ebi2_probe(struct platform_device *pdev)
 
 		/* Figure out the chipselect */
 		ret = of_property_read_u32(child, "reg", &csindex);
-		if (ret)
+		if (ret) {
+			of_node_put(child);
 			return ret;
+		}
 
 		if (csindex > 5) {
 			dev_err(dev,
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 109/240] crypto: qat - fix error path in adf_isr_resource_alloc()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (107 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 108/240] bus: qcom: Put child node before return Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 110/240] mtd: rawnand: gpmi: Fix a double free in gpmi_nand_init Greg Kroah-Hartman
                   ` (135 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Giovanni Cabiddu, Marco Chiappero,
	Herbert Xu, Sasha Levin

From: Giovanni Cabiddu <giovanni.cabiddu@intel.com>

[ Upstream commit 83dc1173d73f80cbce2fee4d308f51f87b2f26ae ]

The function adf_isr_resource_alloc() is not unwinding correctly in case
of error.
This patch fixes the error paths and propagate the errors to the caller.

Fixes: 7afa232e76ce ("crypto: qat - Intel(R) QAT DH895xcc accelerator")
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Marco Chiappero <marco.chiappero@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/crypto/qat/qat_common/adf_isr.c | 29 ++++++++++++++++++-------
 1 file changed, 21 insertions(+), 8 deletions(-)

diff --git a/drivers/crypto/qat/qat_common/adf_isr.c b/drivers/crypto/qat/qat_common/adf_isr.c
index 06d49017a52b..2c0be14309cf 100644
--- a/drivers/crypto/qat/qat_common/adf_isr.c
+++ b/drivers/crypto/qat/qat_common/adf_isr.c
@@ -330,19 +330,32 @@ int adf_isr_resource_alloc(struct adf_accel_dev *accel_dev)
 
 	ret = adf_isr_alloc_msix_entry_table(accel_dev);
 	if (ret)
-		return ret;
-	if (adf_enable_msix(accel_dev))
 		goto err_out;
 
-	if (adf_setup_bh(accel_dev))
-		goto err_out;
+	ret = adf_enable_msix(accel_dev);
+	if (ret)
+		goto err_free_msix_table;
 
-	if (adf_request_irqs(accel_dev))
-		goto err_out;
+	ret = adf_setup_bh(accel_dev);
+	if (ret)
+		goto err_disable_msix;
+
+	ret = adf_request_irqs(accel_dev);
+	if (ret)
+		goto err_cleanup_bh;
 
 	return 0;
+
+err_cleanup_bh:
+	adf_cleanup_bh(accel_dev);
+
+err_disable_msix:
+	adf_disable_msix(&accel_dev->accel_pci_dev);
+
+err_free_msix_table:
+	adf_isr_free_msix_entry_table(accel_dev);
+
 err_out:
-	adf_isr_resource_free(accel_dev);
-	return -EFAULT;
+	return ret;
 }
 EXPORT_SYMBOL_GPL(adf_isr_resource_alloc);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 110/240] mtd: rawnand: gpmi: Fix a double free in gpmi_nand_init
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (108 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 109/240] crypto: qat - fix error path in adf_isr_resource_alloc() Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 111/240] staging: rtl8192u: Fix potential infinite loop Greg Kroah-Hartman
                   ` (134 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Lv Yunlong, Miquel Raynal, Sasha Levin

From: Lv Yunlong <lyl2019@mail.ustc.edu.cn>

[ Upstream commit 076de75de1e53160e9b099f75872c1f9adf41a0b ]

If the callee gpmi_alloc_dma_buffer() failed to alloc memory for
this->raw_buffer, gpmi_free_dma_buffer() will be called to free
this->auxiliary_virt. But this->auxiliary_virt is still a non-NULL
and valid ptr.

Then gpmi_alloc_dma_buffer() returns err and gpmi_free_dma_buffer()
is called again to free this->auxiliary_virt in err_out. This causes
a double free.

As gpmi_free_dma_buffer() has already called in gpmi_alloc_dma_buffer's
error path, so it should return err directly instead of releasing the dma
buffer again.

Fixes: 4d02423e9afe6 ("mtd: nand: gpmi: Fix gpmi_nand_init() error path")
Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210403060905.5251-1-lyl2019@mail.ustc.edu.cn
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/mtd/nand/gpmi-nand/gpmi-nand.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
index f4a99e91c250..c43bd945d93a 100644
--- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
@@ -2020,7 +2020,7 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
 	this->bch_geometry.auxiliary_size = 128;
 	ret = gpmi_alloc_dma_buffer(this);
 	if (ret)
-		goto err_out;
+		return ret;
 
 	ret = nand_scan_ident(mtd, GPMI_IS_MX6(this) ? 2 : 1, NULL);
 	if (ret)
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 111/240] staging: rtl8192u: Fix potential infinite loop
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (109 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 110/240] mtd: rawnand: gpmi: Fix a double free in gpmi_nand_init Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 112/240] staging: greybus: uart: fix unprivileged TIOCCSERIAL Greg Kroah-Hartman
                   ` (133 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Colin Ian King, Sasha Levin

From: Colin Ian King <colin.king@canonical.com>

[ Upstream commit f9b9263a25dc3d2eaaa829e207434db6951ca7bc ]

The for-loop iterates with a u8 loop counter i and compares this
with the loop upper limit of riv->ieee80211->LinkDetectInfo.SlotNum
that is a u16 type. There is a potential infinite loop if SlotNum
is larger than the u8 loop counter. Fix this by making the loop
counter the same type as SlotNum.

Addresses-Coverity: ("Infinite loop")
Fixes: 8fc8598e61f6 ("Staging: Added Realtek rtl8192u driver to staging")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210407150308.496623-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/staging/rtl8192u/r8192U_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/rtl8192u/r8192U_core.c b/drivers/staging/rtl8192u/r8192U_core.c
index fa4c47c7d216..53b77c8ae328 100644
--- a/drivers/staging/rtl8192u/r8192U_core.c
+++ b/drivers/staging/rtl8192u/r8192U_core.c
@@ -3420,7 +3420,7 @@ static void rtl819x_update_rxcounts(struct r8192_priv *priv, u32 *TotalRxBcnNum,
 			     u32 *TotalRxDataNum)
 {
 	u16			SlotIndex;
-	u8			i;
+	u16			i;
 
 	*TotalRxBcnNum = 0;
 	*TotalRxDataNum = 0;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 112/240] staging: greybus: uart: fix unprivileged TIOCCSERIAL
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (110 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 111/240] staging: rtl8192u: Fix potential infinite loop Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 113/240] crypto: qat - Fix a double free in adf_create_ring Greg Kroah-Hartman
                   ` (132 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Johan Hovold, Sasha Levin

From: Johan Hovold <johan@kernel.org>

[ Upstream commit 60c6b305c11b5fd167ce5e2ce42f3a9098c388f0 ]

TIOCSSERIAL is a horrid, underspecified, legacy interface which for most
serial devices is only useful for setting the close_delay and
closing_wait parameters.

A non-privileged user has only ever been able to set the since long
deprecated ASYNC_SPD flags and trying to change any other *supported*
feature should result in -EPERM being returned. Setting the current
values for any supported features should return success.

Fix the greybus implementation which instead indicated that the
TIOCSSERIAL ioctl was not even implemented when a non-privileged user
set the current values.

Fixes: e68453ed28c5 ("greybus: uart-gb: now builds, more framework added")
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210407102334.32361-7-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/staging/greybus/uart.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/staging/greybus/uart.c b/drivers/staging/greybus/uart.c
index 9ef9cbfd8926..c35c9b766a00 100644
--- a/drivers/staging/greybus/uart.c
+++ b/drivers/staging/greybus/uart.c
@@ -661,8 +661,6 @@ static int set_serial_info(struct gb_tty *gb_tty,
 		if ((close_delay != gb_tty->port.close_delay) ||
 		    (closing_wait != gb_tty->port.closing_wait))
 			retval = -EPERM;
-		else
-			retval = -EOPNOTSUPP;
 	} else {
 		gb_tty->port.close_delay = close_delay;
 		gb_tty->port.closing_wait = closing_wait;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 113/240] crypto: qat - Fix a double free in adf_create_ring
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (111 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 112/240] staging: greybus: uart: fix unprivileged TIOCCSERIAL Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 114/240] usb: gadget: r8a66597: Add missing null check on return from platform_get_resource Greg Kroah-Hartman
                   ` (131 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Lv Yunlong, Herbert Xu, Sasha Levin

From: Lv Yunlong <lyl2019@mail.ustc.edu.cn>

[ Upstream commit f7cae626cabb3350b23722b78fe34dd7a615ca04 ]

In adf_create_ring, if the callee adf_init_ring() failed, the callee will
free the ring->base_addr by dma_free_coherent() and return -EFAULT. Then
adf_create_ring will goto err and the ring->base_addr will be freed again
in adf_cleanup_ring().

My patch sets ring->base_addr to NULL after the first freed to avoid the
double free.

Fixes: a672a9dc872ec ("crypto: qat - Intel(R) QAT transport code")
Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/crypto/qat/qat_common/adf_transport.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/crypto/qat/qat_common/adf_transport.c b/drivers/crypto/qat/qat_common/adf_transport.c
index 57d2622728a5..4c0067f8c079 100644
--- a/drivers/crypto/qat/qat_common/adf_transport.c
+++ b/drivers/crypto/qat/qat_common/adf_transport.c
@@ -197,6 +197,7 @@ static int adf_init_ring(struct adf_etr_ring_data *ring)
 		dev_err(&GET_DEV(accel_dev), "Ring address not aligned\n");
 		dma_free_coherent(&GET_DEV(accel_dev), ring_size_bytes,
 				  ring->base_addr, ring->dma_addr);
+		ring->base_addr = NULL;
 		return -EFAULT;
 	}
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 114/240] usb: gadget: r8a66597: Add missing null check on return from platform_get_resource
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (112 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 113/240] crypto: qat - Fix a double free in adf_create_ring Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 115/240] USB: cdc-acm: fix unprivileged TIOCCSERIAL Greg Kroah-Hartman
                   ` (130 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Colin Ian King, Sasha Levin

From: Colin Ian King <colin.king@canonical.com>

[ Upstream commit 9c2076090c2815fe7c49676df68dde7e60a9b9fc ]

The call to platform_get_resource can potentially return a NULL pointer
on failure, so add this check and return -EINVAL if it fails.

Fixes: c41442474a26 ("usb: gadget: R8A66597 peripheral controller support.")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Addresses-Coverity: ("Dereference null return")
Link: https://lore.kernel.org/r/20210406184510.433497-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/gadget/udc/r8a66597-udc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/gadget/udc/r8a66597-udc.c b/drivers/usb/gadget/udc/r8a66597-udc.c
index 230e3248f386..80503c3604ca 100644
--- a/drivers/usb/gadget/udc/r8a66597-udc.c
+++ b/drivers/usb/gadget/udc/r8a66597-udc.c
@@ -1855,6 +1855,8 @@ static int r8a66597_probe(struct platform_device *pdev)
 		return PTR_ERR(reg);
 
 	ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+	if (!ires)
+		return -EINVAL;
 	irq = ires->start;
 	irq_trigger = ires->flags & IRQF_TRIGGER_MASK;
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 115/240] USB: cdc-acm: fix unprivileged TIOCCSERIAL
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (113 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 114/240] usb: gadget: r8a66597: Add missing null check on return from platform_get_resource Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 116/240] tty: actually undefine superseded ASYNC flags Greg Kroah-Hartman
                   ` (129 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Oliver Neukum, Johan Hovold, Sasha Levin

From: Johan Hovold <johan@kernel.org>

[ Upstream commit dd5619582d60007139f0447382d2839f4f9e339b ]

TIOCSSERIAL is a horrid, underspecified, legacy interface which for most
serial devices is only useful for setting the close_delay and
closing_wait parameters.

A non-privileged user has only ever been able to set the since long
deprecated ASYNC_SPD flags and trying to change any other *supported*
feature should result in -EPERM being returned. Setting the current
values for any supported features should return success.

Fix the cdc-acm implementation which instead indicated that the
TIOCSSERIAL ioctl was not even implemented when a non-privileged user
set the current values.

Fixes: ba2d8ce9db0a ("cdc-acm: implement TIOCSSERIAL to avoid blocking close(2)")
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210408131602.27956-3-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/class/cdc-acm.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 97b5b021a220..a70d2341ada6 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -870,8 +870,6 @@ static int set_serial_info(struct acm *acm,
 		if ((new_serial.close_delay != old_close_delay) ||
 	            (new_serial.closing_wait != old_closing_wait))
 			retval = -EPERM;
-		else
-			retval = -EOPNOTSUPP;
 	} else {
 		acm->port.close_delay  = close_delay;
 		acm->port.closing_wait = closing_wait;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 116/240] tty: actually undefine superseded ASYNC flags
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (114 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 115/240] USB: cdc-acm: fix unprivileged TIOCCSERIAL Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 117/240] tty: fix return value for unsupported ioctls Greg Kroah-Hartman
                   ` (128 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Johan Hovold, Sasha Levin

From: Johan Hovold <johan@kernel.org>

[ Upstream commit d09845e98a05850a8094ea8fd6dd09a8e6824fff ]

Some kernel-internal ASYNC flags have been superseded by tty-port flags
and should no longer be used by kernel drivers.

Fix the misspelled "__KERNEL__" compile guards which failed their sole
purpose to break out-of-tree drivers that have not yet been updated.

Fixes: 5c0517fefc92 ("tty: core: Undefine ASYNC_* flags superceded by TTY_PORT* flags")
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210407095208.31838-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/uapi/linux/tty_flags.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/uapi/linux/tty_flags.h b/include/uapi/linux/tty_flags.h
index 66e4d8bcb16f..9f9572b2a596 100644
--- a/include/uapi/linux/tty_flags.h
+++ b/include/uapi/linux/tty_flags.h
@@ -38,7 +38,7 @@
  * WARNING: These flags are no longer used and have been superceded by the
  *	    TTY_PORT_ flags in the iflags field (and not userspace-visible)
  */
-#ifndef _KERNEL_
+#ifndef __KERNEL__
 #define ASYNCB_INITIALIZED	31 /* Serial port was initialized */
 #define ASYNCB_SUSPENDED	30 /* Serial port is suspended */
 #define ASYNCB_NORMAL_ACTIVE	29 /* Normal device is active */
@@ -80,7 +80,7 @@
 #define ASYNC_SPD_WARP		(ASYNC_SPD_HI|ASYNC_SPD_SHI)
 #define ASYNC_SPD_MASK		(ASYNC_SPD_HI|ASYNC_SPD_VHI|ASYNC_SPD_SHI)
 
-#ifndef _KERNEL_
+#ifndef __KERNEL__
 /* These flags are no longer used (and were always masked from userspace) */
 #define ASYNC_INITIALIZED	(1U << ASYNCB_INITIALIZED)
 #define ASYNC_NORMAL_ACTIVE	(1U << ASYNCB_NORMAL_ACTIVE)
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 117/240] tty: fix return value for unsupported ioctls
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (115 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 116/240] tty: actually undefine superseded ASYNC flags Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 118/240] firmware: qcom-scm: Fix QCOM_SCM configuration Greg Kroah-Hartman
                   ` (127 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Johan Hovold, Sasha Levin

From: Johan Hovold <johan@kernel.org>

[ Upstream commit 1b8b20868a6d64cfe8174a21b25b74367bdf0560 ]

Drivers should return -ENOTTY ("Inappropriate I/O control operation")
when an ioctl isn't supported, while -EINVAL is used for invalid
arguments.

Fix up the TIOCMGET, TIOCMSET and TIOCGICOUNT helpers which returned
-EINVAL when a tty driver did not implement the corresponding
operations.

Note that the TIOCMGET and TIOCMSET helpers predate git and do not get a
corresponding Fixes tag below.

Fixes: d281da7ff6f7 ("tty: Make tiocgicount a handler")
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210407095208.31838-3-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/tty/tty_io.c       | 8 ++++----
 include/linux/tty_driver.h | 2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index 7b4aca20cb29..e16a74b68cd0 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -2791,14 +2791,14 @@ out:
  *	@p: pointer to result
  *
  *	Obtain the modem status bits from the tty driver if the feature
- *	is supported. Return -EINVAL if it is not available.
+ *	is supported. Return -ENOTTY if it is not available.
  *
  *	Locking: none (up to the driver)
  */
 
 static int tty_tiocmget(struct tty_struct *tty, int __user *p)
 {
-	int retval = -EINVAL;
+	int retval = -ENOTTY;
 
 	if (tty->ops->tiocmget) {
 		retval = tty->ops->tiocmget(tty);
@@ -2816,7 +2816,7 @@ static int tty_tiocmget(struct tty_struct *tty, int __user *p)
  *	@p: pointer to desired bits
  *
  *	Set the modem status bits from the tty driver if the feature
- *	is supported. Return -EINVAL if it is not available.
+ *	is supported. Return -ENOTTY if it is not available.
  *
  *	Locking: none (up to the driver)
  */
@@ -2828,7 +2828,7 @@ static int tty_tiocmset(struct tty_struct *tty, unsigned int cmd,
 	unsigned int set, clear, val;
 
 	if (tty->ops->tiocmset == NULL)
-		return -EINVAL;
+		return -ENOTTY;
 
 	retval = get_user(val, p);
 	if (retval)
diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index b742b5e47cc2..ae63c962fa22 100644
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -235,7 +235,7 @@
  *
  *	Called when the device receives a TIOCGICOUNT ioctl. Passed a kernel
  *	structure to complete. This method is optional and will only be called
- *	if provided (otherwise EINVAL will be returned).
+ *	if provided (otherwise ENOTTY will be returned).
  */
 
 #include <linux/export.h>
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 118/240] firmware: qcom-scm: Fix QCOM_SCM configuration
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (116 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 117/240] tty: fix return value for unsupported ioctls Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 119/240] x86/platform/uv: Fix !KEXEC build failure Greg Kroah-Hartman
                   ` (126 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Hulk Robot, He Ying, Sasha Levin

From: He Ying <heying24@huawei.com>

[ Upstream commit 2954a6f12f250890ec2433cec03ba92784d613e8 ]

When CONFIG_QCOM_SCM is y and CONFIG_HAVE_ARM_SMCCC
is not set, compiling errors are encountered as follows:

drivers/firmware/qcom_scm-smc.o: In function `__scm_smc_do_quirk':
qcom_scm-smc.c:(.text+0x36): undefined reference to `__arm_smccc_smc'
drivers/firmware/qcom_scm-legacy.o: In function `scm_legacy_call':
qcom_scm-legacy.c:(.text+0xe2): undefined reference to `__arm_smccc_smc'
drivers/firmware/qcom_scm-legacy.o: In function `scm_legacy_call_atomic':
qcom_scm-legacy.c:(.text+0x1f0): undefined reference to `__arm_smccc_smc'

Note that __arm_smccc_smc is defined when HAVE_ARM_SMCCC is y.
So add dependency on HAVE_ARM_SMCCC in QCOM_SCM configuration.

Fixes: 916f743da354 ("firmware: qcom: scm: Move the scm driver to drivers/firmware")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: He Ying <heying24@huawei.com>
Link: https://lore.kernel.org/r/20210406094200.60952-1-heying24@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/firmware/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index 854df538ae01..1fc29fca27c8 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -194,6 +194,7 @@ config FW_CFG_SYSFS_CMDLINE
 config QCOM_SCM
 	bool
 	depends on ARM || ARM64
+	depends on HAVE_ARM_SMCCC
 	select RESET_CONTROLLER
 
 config QCOM_SCM_32
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 119/240] x86/platform/uv: Fix !KEXEC build failure
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (117 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 118/240] firmware: qcom-scm: Fix QCOM_SCM configuration Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 120/240] Drivers: hv: vmbus: Increase wait time for VMbus unload Greg Kroah-Hartman
                   ` (125 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Ingo Molnar, Mike Travis, Sasha Levin

From: Ingo Molnar <mingo@kernel.org>

[ Upstream commit c2209ea55612efac75de0a58ef5f7394fae7fa0f ]

When KEXEC is disabled, the UV build fails:

  arch/x86/platform/uv/uv_nmi.c:875:14: error: ‘uv_nmi_kexec_failed’ undeclared (first use in this function)

Since uv_nmi_kexec_failed is only defined in the KEXEC_CORE #ifdef branch,
this code cannot ever have been build tested:

	if (main)
		pr_err("UV: NMI kdump: KEXEC not supported in this kernel\n");
	atomic_set(&uv_nmi_kexec_failed, 1);

Nor is this use possible in uv_handle_nmi():

                atomic_set(&uv_nmi_kexec_failed, 0);

These bugs were introduced in this commit:

    d0a9964e9873: ("x86/platform/uv: Implement simple dump failover if kdump fails")

Which added the uv_nmi_kexec_failed assignments to !KEXEC code, while making the
definition KEXEC-only - apparently without testing the !KEXEC case.

Instead of complicating the #ifdef maze, simplify the code by requiring X86_UV
to depend on KEXEC_CORE. This pattern is present in other architectures as well.

( We'll remove the untested, 7 years old !KEXEC complications from the file in a
  separate commit. )

Fixes: d0a9964e9873: ("x86/platform/uv: Implement simple dump failover if kdump fails")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Mike Travis <travis@sgi.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/x86/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 80636caee07c..3ce5b5bd1dc4 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -495,6 +495,7 @@ config X86_UV
 	depends on X86_EXTENDED_PLATFORM
 	depends on NUMA
 	depends on EFI
+	depends on KEXEC_CORE
 	depends on X86_X2APIC
 	depends on PCI
 	---help---
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 120/240] Drivers: hv: vmbus: Increase wait time for VMbus unload
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (118 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 119/240] x86/platform/uv: Fix !KEXEC build failure Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 121/240] ttyprintk: Add TTY hangup callback Greg Kroah-Hartman
                   ` (124 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Michael Kelley, Vitaly Kuznetsov,
	Wei Liu, Sasha Levin

From: Michael Kelley <mikelley@microsoft.com>

[ Upstream commit 77db0ec8b7764cb9b09b78066ebfd47b2c0c1909 ]

When running in Azure, disks may be connected to a Linux VM with
read/write caching enabled. If a VM panics and issues a VMbus
UNLOAD request to Hyper-V, the response is delayed until all dirty
data in the disk cache is flushed.  In extreme cases, this flushing
can take 10's of seconds, depending on the disk speed and the amount
of dirty data. If kdump is configured for the VM, the current 10 second
timeout in vmbus_wait_for_unload() may be exceeded, and the UNLOAD
complete message may arrive well after the kdump kernel is already
running, causing problems.  Note that no problem occurs if kdump is
not enabled because Hyper-V waits for the cache flush before doing
a reboot through the BIOS/UEFI code.

Fix this problem by increasing the timeout in vmbus_wait_for_unload()
to 100 seconds. Also output periodic messages so that if anyone is
watching the serial console, they won't think the VM is completely
hung.

Fixes: 911e1987efc8 ("Drivers: hv: vmbus: Add timeout to vmbus_wait_for_unload")
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/r/1618894089-126662-1-git-send-email-mikelley@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hv/channel_mgmt.c | 30 +++++++++++++++++++++++++-----
 1 file changed, 25 insertions(+), 5 deletions(-)

diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index 7bf5e2fe1751..60c122b355ea 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -675,6 +675,12 @@ static void init_vp_index(struct vmbus_channel *channel, u16 dev_type)
 	channel->target_vp = hv_context.vp_index[cur_cpu];
 }
 
+#define UNLOAD_DELAY_UNIT_MS	10		/* 10 milliseconds */
+#define UNLOAD_WAIT_MS		(100*1000)	/* 100 seconds */
+#define UNLOAD_WAIT_LOOPS	(UNLOAD_WAIT_MS/UNLOAD_DELAY_UNIT_MS)
+#define UNLOAD_MSG_MS		(5*1000)	/* Every 5 seconds */
+#define UNLOAD_MSG_LOOPS	(UNLOAD_MSG_MS/UNLOAD_DELAY_UNIT_MS)
+
 static void vmbus_wait_for_unload(void)
 {
 	int cpu;
@@ -692,12 +698,17 @@ static void vmbus_wait_for_unload(void)
 	 * vmbus_connection.unload_event. If not, the last thing we can do is
 	 * read message pages for all CPUs directly.
 	 *
-	 * Wait no more than 10 seconds so that the panic path can't get
-	 * hung forever in case the response message isn't seen.
+	 * Wait up to 100 seconds since an Azure host must writeback any dirty
+	 * data in its disk cache before the VMbus UNLOAD request will
+	 * complete. This flushing has been empirically observed to take up
+	 * to 50 seconds in cases with a lot of dirty data, so allow additional
+	 * leeway and for inaccuracies in mdelay(). But eventually time out so
+	 * that the panic path can't get hung forever in case the response
+	 * message isn't seen.
 	 */
-	for (i = 0; i < 1000; i++) {
+	for (i = 1; i <= UNLOAD_WAIT_LOOPS; i++) {
 		if (completion_done(&vmbus_connection.unload_event))
-			break;
+			goto completed;
 
 		for_each_online_cpu(cpu) {
 			page_addr = hv_context.synic_message_page[cpu];
@@ -717,9 +728,18 @@ static void vmbus_wait_for_unload(void)
 			vmbus_signal_eom(msg, message_type);
 		}
 
-		mdelay(10);
+		/*
+		 * Give a notice periodically so someone watching the
+		 * serial output won't think it is completely hung.
+		 */
+		if (!(i % UNLOAD_MSG_LOOPS))
+			pr_notice("Waiting for VMBus UNLOAD to complete\n");
+
+		mdelay(UNLOAD_DELAY_UNIT_MS);
 	}
+	pr_err("Continuing even though VMBus UNLOAD did not complete\n");
 
+completed:
 	/*
 	 * We're crashing and already got the UNLOAD_RESPONSE, cleanup all
 	 * maybe-pending messages on all CPUs to be able to receive new
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 121/240] ttyprintk: Add TTY hangup callback.
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (119 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 120/240] Drivers: hv: vmbus: Increase wait time for VMbus unload Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 122/240] media: vivid: fix assignment of dev->fbuf_out_flags Greg Kroah-Hartman
                   ` (123 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, syzbot, syzbot, Tetsuo Handa, Sasha Levin

From: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>

[ Upstream commit c0070e1e60270f6a1e09442a9ab2335f3eaeaad2 ]

syzbot is reporting hung task due to flood of

  tty_warn(tty, "%s: tty->count = 1 port count = %d\n", __func__,
           port->count);

message [1], for ioctl(TIOCVHANGUP) prevents tty_port_close() from
decrementing port->count due to tty_hung_up_p() == true.

----------
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <unistd.h>

int main(int argc, char *argv[])
{
	int i;
	int fd[10];

	for (i = 0; i < 10; i++)
		fd[i] = open("/dev/ttyprintk", O_WRONLY);
	ioctl(fd[0], TIOCVHANGUP);
	for (i = 0; i < 10; i++)
		close(fd[i]);
	close(open("/dev/ttyprintk", O_WRONLY));
	return 0;
}
----------

When TTY hangup happens, port->count needs to be reset via
"struct tty_operations"->hangup callback.

[1] https://syzkaller.appspot.com/bug?id=39ea6caa479af471183997376dc7e90bc7d64a6a

Reported-by: syzbot <syzbot+43e93968b964e369db0b@syzkaller.appspotmail.com>
Reported-by: syzbot <syzbot+3ed715090790806d8b18@syzkaller.appspotmail.com>
Tested-by: syzbot <syzbot+43e93968b964e369db0b@syzkaller.appspotmail.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Fixes: 24b4b67d17c308aa ("add ttyprintk driver")
Link: https://lore.kernel.org/r/17e0652d-89b7-c8c0-fb53-e7566ac9add4@i-love.sakura.ne.jp
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/char/ttyprintk.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/char/ttyprintk.c b/drivers/char/ttyprintk.c
index 774748497ace..e56ac5adb5fc 100644
--- a/drivers/char/ttyprintk.c
+++ b/drivers/char/ttyprintk.c
@@ -159,12 +159,23 @@ static int tpk_ioctl(struct tty_struct *tty,
 	return 0;
 }
 
+/*
+ * TTY operations hangup function.
+ */
+static void tpk_hangup(struct tty_struct *tty)
+{
+	struct ttyprintk_port *tpkp = tty->driver_data;
+
+	tty_port_hangup(&tpkp->port);
+}
+
 static const struct tty_operations ttyprintk_ops = {
 	.open = tpk_open,
 	.close = tpk_close,
 	.write = tpk_write,
 	.write_room = tpk_write_room,
 	.ioctl = tpk_ioctl,
+	.hangup = tpk_hangup,
 };
 
 static const struct tty_port_operations null_ops = { };
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 122/240] media: vivid: fix assignment of dev->fbuf_out_flags
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (120 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 121/240] ttyprintk: Add TTY hangup callback Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 123/240] media: omap4iss: return error code when omap4iss_get() failed Greg Kroah-Hartman
                   ` (122 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Colin Ian King, Hans Verkuil,
	Mauro Carvalho Chehab, Sasha Levin

From: Colin Ian King <colin.king@canonical.com>

[ Upstream commit 5cde22fcc7271812a7944c47b40100df15908358 ]

Currently the chroma_flags and alpha_flags are being zero'd with a bit-wise
mask and the following statement should be bit-wise or'ing in the new flag
bits but instead is making a direct assignment.  Fix this by using the |=
operator rather than an assignment.

Addresses-Coverity: ("Unused value")

Fixes: ef834f7836ec ("[media] vivid: add the video capture and output parts")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/platform/vivid/vivid-vid-out.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/platform/vivid/vivid-vid-out.c b/drivers/media/platform/vivid/vivid-vid-out.c
index 8fed2fbe91a9..f78caf72cb3e 100644
--- a/drivers/media/platform/vivid/vivid-vid-out.c
+++ b/drivers/media/platform/vivid/vivid-vid-out.c
@@ -1003,7 +1003,7 @@ int vivid_vid_out_s_fbuf(struct file *file, void *fh,
 		return -EINVAL;
 	}
 	dev->fbuf_out_flags &= ~(chroma_flags | alpha_flags);
-	dev->fbuf_out_flags = a->flags & (chroma_flags | alpha_flags);
+	dev->fbuf_out_flags |= a->flags & (chroma_flags | alpha_flags);
 	return 0;
 }
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 123/240] media: omap4iss: return error code when omap4iss_get() failed
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (121 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 122/240] media: vivid: fix assignment of dev->fbuf_out_flags Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 124/240] media: m88rs6000t: avoid potential out-of-bounds reads on arrays Greg Kroah-Hartman
                   ` (121 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Hulk Robot, Yang Yingliang,
	Hans Verkuil, Mauro Carvalho Chehab, Sasha Levin

From: Yang Yingliang <yangyingliang@huawei.com>

[ Upstream commit 8938c48fa25b491842ece9eb38f0bea0fcbaca44 ]

If omap4iss_get() failed, it need return error code in iss_probe().

Fixes: 59f0ad807681 ("[media] v4l: omap4iss: Add support for OMAP4...")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/staging/media/omap4iss/iss.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/media/omap4iss/iss.c b/drivers/staging/media/omap4iss/iss.c
index c26c99fd4a24..1e10fe204d3b 100644
--- a/drivers/staging/media/omap4iss/iss.c
+++ b/drivers/staging/media/omap4iss/iss.c
@@ -1244,8 +1244,10 @@ static int iss_probe(struct platform_device *pdev)
 	if (ret < 0)
 		goto error;
 
-	if (!omap4iss_get(iss))
+	if (!omap4iss_get(iss)) {
+		ret = -EINVAL;
 		goto error;
+	}
 
 	ret = iss_reset(iss);
 	if (ret < 0)
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 124/240] media: m88rs6000t: avoid potential out-of-bounds reads on arrays
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (122 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 123/240] media: omap4iss: return error code when omap4iss_get() failed Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 125/240] pata_arasan_cf: fix IRQ check Greg Kroah-Hartman
                   ` (120 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Colin Ian King,
	Mauro Carvalho Chehab, Sasha Levin

From: Colin Ian King <colin.king@canonical.com>

[ Upstream commit 9baa3d64e8e2373ddd11c346439e5dfccb2cbb0d ]

There a 3 array for-loops that don't check the upper bounds of the
index into arrays and this may lead to potential out-of-bounds
reads.  Fix this by adding array size upper bounds checks to be
full safe.

Addresses-Coverity: ("Out-of-bounds read")

Link: https://lore.kernel.org/linux-media/20201007121628.20676-1-colin.king@canonical.com
Fixes: 333829110f1d ("[media] m88rs6000t: add new dvb-s/s2 tuner for integrated chip M88RS6000")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/tuners/m88rs6000t.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/media/tuners/m88rs6000t.c b/drivers/media/tuners/m88rs6000t.c
index 9f3e0fd4cad9..d4443f9c9fa3 100644
--- a/drivers/media/tuners/m88rs6000t.c
+++ b/drivers/media/tuners/m88rs6000t.c
@@ -534,7 +534,7 @@ static int m88rs6000t_get_rf_strength(struct dvb_frontend *fe, u16 *strength)
 	PGA2_cri = PGA2_GC >> 2;
 	PGA2_crf = PGA2_GC & 0x03;
 
-	for (i = 0; i <= RF_GC; i++)
+	for (i = 0; i <= RF_GC && i < ARRAY_SIZE(RFGS); i++)
 		RFG += RFGS[i];
 
 	if (RF_GC == 0)
@@ -546,12 +546,12 @@ static int m88rs6000t_get_rf_strength(struct dvb_frontend *fe, u16 *strength)
 	if (RF_GC == 3)
 		RFG += 100;
 
-	for (i = 0; i <= IF_GC; i++)
+	for (i = 0; i <= IF_GC && i < ARRAY_SIZE(IFGS); i++)
 		IFG += IFGS[i];
 
 	TIAG = TIA_GC * TIA_GS;
 
-	for (i = 0; i <= BB_GC; i++)
+	for (i = 0; i <= BB_GC && i < ARRAY_SIZE(BBGS); i++)
 		BBG += BBGS[i];
 
 	PGA2G = PGA2_cri * PGA2_cri_GS + PGA2_crf * PGA2_crf_GS;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 125/240] pata_arasan_cf: fix IRQ check
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (123 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 124/240] media: m88rs6000t: avoid potential out-of-bounds reads on arrays Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 126/240] pata_ipx4xx_cf: " Greg Kroah-Hartman
                   ` (119 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Sergey Shtylyov, Viresh Kumar,
	Jens Axboe, Sasha Levin

From: Sergey Shtylyov <s.shtylyov@omprussia.ru>

[ Upstream commit c7e8f404d56b99c80990b19a402c3f640d74be05 ]

The driver's probe() method is written as if platform_get_irq() returns 0
on error, while actually it returns a negative error code (with all the
other values considered valid IRQs). Rewrite the driver's IRQ checking code
to pass the positive IRQ #s to ata_host_activate(), propagate upstream
-EPROBE_DEFER, and set up the driver to polling mode on (negative) errors
and IRQ0 (libata treats IRQ #0 as a polling mode anyway)...

Fixes: a480167b23ef ("pata_arasan_cf: Adding support for arasan compact flash host controller")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/ata/pata_arasan_cf.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/drivers/ata/pata_arasan_cf.c b/drivers/ata/pata_arasan_cf.c
index b4d54771c9fe..623199fab8fe 100644
--- a/drivers/ata/pata_arasan_cf.c
+++ b/drivers/ata/pata_arasan_cf.c
@@ -819,12 +819,19 @@ static int arasan_cf_probe(struct platform_device *pdev)
 	else
 		quirk = CF_BROKEN_UDMA; /* as it is on spear1340 */
 
-	/* if irq is 0, support only PIO */
-	acdev->irq = platform_get_irq(pdev, 0);
-	if (acdev->irq)
+	/*
+	 * If there's an error getting IRQ (or we do get IRQ0),
+	 * support only PIO
+	 */
+	ret = platform_get_irq(pdev, 0);
+	if (ret > 0) {
+		acdev->irq = ret;
 		irq_handler = arasan_cf_interrupt;
-	else
+	} else	if (ret == -EPROBE_DEFER) {
+		return ret;
+	} else	{
 		quirk |= CF_BROKEN_MWDMA | CF_BROKEN_UDMA;
+	}
 
 	acdev->pbase = res->start;
 	acdev->vbase = devm_ioremap_nocache(&pdev->dev, res->start,
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 126/240] pata_ipx4xx_cf: fix IRQ check
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (124 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 125/240] pata_arasan_cf: fix IRQ check Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:21 ` [PATCH 4.9 127/240] sata_mv: add IRQ checks Greg Kroah-Hartman
                   ` (118 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Sergey Shtylyov, Jens Axboe, Sasha Levin

From: Sergey Shtylyov <s.shtylyov@omprussia.ru>

[ Upstream commit e379b40cc0f179403ce0b82b7e539f635a568da5 ]

The driver's probe() method is written as if platform_get_irq() returns 0
on error, while actually it returns a negative error code (with all the
other values considered valid IRQs).  Rewrite the driver's IRQ checking
code to pass the positive IRQ #s to ata_host_activate(), propagate errors
upstream, and treat IRQ0 as error, returning -EINVAL, as the libata code
treats 0  as  an indication that polling should be used anyway...

Fixes: 0df0d0a0ea9f ("[libata] ARM: add ixp4xx PATA driver")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/ata/pata_ixp4xx_cf.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/ata/pata_ixp4xx_cf.c b/drivers/ata/pata_ixp4xx_cf.c
index abda44183512..fb8d1f68f36f 100644
--- a/drivers/ata/pata_ixp4xx_cf.c
+++ b/drivers/ata/pata_ixp4xx_cf.c
@@ -169,8 +169,12 @@ static int ixp4xx_pata_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq)
+	if (irq > 0)
 		irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
+	else if (irq < 0)
+		return irq;
+	else
+		return -EINVAL;
 
 	/* Setup expansion bus chip selects */
 	*data->cs0_cfg = data->cs0_bits;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 127/240] sata_mv: add IRQ checks
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (125 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 126/240] pata_ipx4xx_cf: " Greg Kroah-Hartman
@ 2021-05-20  9:21 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 128/240] ata: libahci_platform: fix IRQ check Greg Kroah-Hartman
                   ` (117 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:21 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Sergey Shtylyov, Jens Axboe, Sasha Levin

From: Sergey Shtylyov <s.shtylyov@omprussia.ru>

[ Upstream commit e6471a65fdd5efbb8dd2732dd0f063f960685ceb ]

The function mv_platform_probe() neglects to check the results of the
calls to platform_get_irq() and irq_of_parse_and_map() and blithely
passes them to ata_host_activate() -- while the latter only checks
for IRQ0 (treating it as a polling mode indicattion) and passes the
negative values to devm_request_irq() causing it to fail as it takes
unsigned values for the IRQ #...

Add to mv_platform_probe() the proper IRQ checks to pass the positive IRQ
#s to ata_host_activate(), propagate upstream the negative error codes,
and override the IRQ0 with -EINVAL (as we don't want the polling mode).

Fixes: f351b2d638c3 ("sata_mv: Support SoC controllers")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Link: https://lore.kernel.org/r/51436f00-27a1-e20b-c21b-0e817e0a7c86@omprussia.ru
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/ata/sata_mv.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index 513ef298dd96..ded3a66049d2 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -4112,6 +4112,10 @@ static int mv_platform_probe(struct platform_device *pdev)
 		n_ports = mv_platform_data->n_ports;
 		irq = platform_get_irq(pdev, 0);
 	}
+	if (irq < 0)
+		return irq;
+	if (!irq)
+		return -EINVAL;
 
 	host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
 	hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 128/240] ata: libahci_platform: fix IRQ check
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (126 preceding siblings ...)
  2021-05-20  9:21 ` [PATCH 4.9 127/240] sata_mv: add IRQ checks Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 129/240] scsi: fcoe: Fix mismatched fcoe_wwn_from_mac declaration Greg Kroah-Hartman
                   ` (116 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Sergey Shtylyov, Jens Axboe, Sasha Levin

From: Sergey Shtylyov <s.shtylyov@omprussia.ru>

[ Upstream commit b30d0040f06159de97ad9c0b1536f47250719d7d ]

Iff platform_get_irq() returns 0, ahci_platform_init_host() would return 0
early (as if the call was successful). Override IRQ0 with -EINVAL instead
as the 'libata' regards 0 as "no IRQ" (thus polling) anyway...

Fixes: c034640a32f8 ("ata: libahci: properly propagate return value of platform_get_irq()")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Link: https://lore.kernel.org/r/4448c8cc-331f-2915-0e17-38ea34e251c8@omprussia.ru
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/ata/libahci_platform.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/ata/libahci_platform.c b/drivers/ata/libahci_platform.c
index 0b80502bc1c5..bfa2e5eec263 100644
--- a/drivers/ata/libahci_platform.c
+++ b/drivers/ata/libahci_platform.c
@@ -518,11 +518,13 @@ int ahci_platform_init_host(struct platform_device *pdev,
 	int i, irq, n_ports, rc;
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq <= 0) {
+	if (irq < 0) {
 		if (irq != -EPROBE_DEFER)
 			dev_err(dev, "no irq\n");
 		return irq;
 	}
+	if (!irq)
+		return -EINVAL;
 
 	hpriv->irq = irq;
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 129/240] scsi: fcoe: Fix mismatched fcoe_wwn_from_mac declaration
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (127 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 128/240] ata: libahci_platform: fix IRQ check Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 130/240] media: dvb-usb-remote: fix dvb_usb_nec_rc_key_to_event type mismatch Greg Kroah-Hartman
                   ` (115 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Arnd Bergmann, Martin K. Petersen,
	Sasha Levin

From: Arnd Bergmann <arnd@arndb.de>

[ Upstream commit 5b11c9d80bde81f6896cc85b23aeaa9502a704ed ]

An old cleanup changed the array size from MAX_ADDR_LEN to unspecified in
the declaration, but now gcc-11 warns about this:

drivers/scsi/fcoe/fcoe_ctlr.c:1972:37: error: argument 1 of type ‘unsigned char[32]’ with mismatched bound [-Werror=array-parameter=]
 1972 | u64 fcoe_wwn_from_mac(unsigned char mac[MAX_ADDR_LEN],
      |                       ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
In file included from /git/arm-soc/drivers/scsi/fcoe/fcoe_ctlr.c:33:
include/scsi/libfcoe.h:252:37: note: previously declared as ‘unsigned char[]’
  252 | u64 fcoe_wwn_from_mac(unsigned char mac[], unsigned int, unsigned int);
      |                       ~~~~~~~~~~~~~~^~~~~

Change the type back to what the function definition uses.

Link: https://lore.kernel.org/r/20210322164702.957810-1-arnd@kernel.org
Fixes: fdd78027fd47 ("[SCSI] fcoe: cleans up libfcoe.h and adds fcoe.h for fcoe module")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/scsi/libfcoe.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/scsi/libfcoe.h b/include/scsi/libfcoe.h
index 6be92eede5c0..a911f993219d 100644
--- a/include/scsi/libfcoe.h
+++ b/include/scsi/libfcoe.h
@@ -261,7 +261,7 @@ int fcoe_ctlr_recv_flogi(struct fcoe_ctlr *, struct fc_lport *,
 			 struct fc_frame *);
 
 /* libfcoe funcs */
-u64 fcoe_wwn_from_mac(unsigned char mac[], unsigned int, unsigned int);
+u64 fcoe_wwn_from_mac(unsigned char mac[MAX_ADDR_LEN], unsigned int, unsigned int);
 int fcoe_libfc_config(struct fc_lport *, struct fcoe_ctlr *,
 		      const struct libfc_function_template *, int init_fcp);
 u32 fcoe_fc_crc(struct fc_frame *fp);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 130/240] media: dvb-usb-remote: fix dvb_usb_nec_rc_key_to_event type mismatch
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (128 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 129/240] scsi: fcoe: Fix mismatched fcoe_wwn_from_mac declaration Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 131/240] clk: uniphier: Fix potential infinite loop Greg Kroah-Hartman
                   ` (114 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Arnd Bergmann, Sean Young,
	Mauro Carvalho Chehab, Sasha Levin

From: Arnd Bergmann <arnd@arndb.de>

[ Upstream commit 0fa430e96d3c3561a78701f51fd8593da68b8474 ]

gcc-11 warns about the prototype not exactly matching the function
definition:

drivers/media/usb/dvb-usb/dvb-usb-remote.c:363:20: error: argument 2 of type ‘u8[5]’ {aka ‘unsigned char[5]’} with mismatched bound [-Werror=array-parameter=]
  363 |                 u8 keybuf[5], u32 *event, int *state)
      |                 ~~~^~~~~~~~~
In file included from drivers/media/usb/dvb-usb/dvb-usb-common.h:13,
                 from drivers/media/usb/dvb-usb/dvb-usb-remote.c:9:
drivers/media/usb/dvb-usb/dvb-usb.h:490:65: note: previously declared as ‘u8[]’ {aka ‘unsigned char[]’}
  490 | extern int dvb_usb_nec_rc_key_to_event(struct dvb_usb_device *, u8[], u32 *, int *);
      |                                                                 ^~~~

Fixes: 776338e121b9 ("[PATCH] dvb: Add generalized dvb-usb driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/usb/dvb-usb/dvb-usb.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/media/usb/dvb-usb/dvb-usb.h b/drivers/media/usb/dvb-usb/dvb-usb.h
index 107255b08b2b..704d57e3ea1c 100644
--- a/drivers/media/usb/dvb-usb/dvb-usb.h
+++ b/drivers/media/usb/dvb-usb/dvb-usb.h
@@ -471,7 +471,8 @@ extern int dvb_usb_generic_rw(struct dvb_usb_device *, u8 *, u16, u8 *, u16,int)
 extern int dvb_usb_generic_write(struct dvb_usb_device *, u8 *, u16);
 
 /* commonly used remote control parsing */
-extern int dvb_usb_nec_rc_key_to_event(struct dvb_usb_device *, u8[], u32 *, int *);
+int dvb_usb_nec_rc_key_to_event(struct dvb_usb_device *d, u8 keybuf[5],
+				u32 *event, int *state);
 
 /* commonly used firmware download types and function */
 struct hexline {
-- 
2.30.2




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* [PATCH 4.9 131/240] clk: uniphier: Fix potential infinite loop
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (129 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 130/240] media: dvb-usb-remote: fix dvb_usb_nec_rc_key_to_event type mismatch Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 132/240] scsi: jazz_esp: Add IRQ check Greg Kroah-Hartman
                   ` (113 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Colin Ian King, Masahiro Yamada,
	Stephen Boyd, Sasha Levin

From: Colin Ian King <colin.king@canonical.com>

[ Upstream commit f6b1340dc751a6caa2a0567b667d0f4f4172cd58 ]

The for-loop iterates with a u8 loop counter i and compares this
with the loop upper limit of num_parents that is an int type.
There is a potential infinite loop if num_parents is larger than
the u8 loop counter. Fix this by making the loop counter the same
type as num_parents.  Also make num_parents an unsigned int to
match the return type of the call to clk_hw_get_num_parents.

Addresses-Coverity: ("Infinite loop")
Fixes: 734d82f4a678 ("clk: uniphier: add core support code for UniPhier clock driver")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Masahiro Yamada <masahiroy@kernel.org>
Link: https://lore.kernel.org/r/20210409090104.629722-1-colin.king@canonical.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/clk/uniphier/clk-uniphier-mux.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/uniphier/clk-uniphier-mux.c b/drivers/clk/uniphier/clk-uniphier-mux.c
index 2c243a894f3b..3a52ab968ac2 100644
--- a/drivers/clk/uniphier/clk-uniphier-mux.c
+++ b/drivers/clk/uniphier/clk-uniphier-mux.c
@@ -40,10 +40,10 @@ static int uniphier_clk_mux_set_parent(struct clk_hw *hw, u8 index)
 static u8 uniphier_clk_mux_get_parent(struct clk_hw *hw)
 {
 	struct uniphier_clk_mux *mux = to_uniphier_clk_mux(hw);
-	int num_parents = clk_hw_get_num_parents(hw);
+	unsigned int num_parents = clk_hw_get_num_parents(hw);
 	int ret;
 	unsigned int val;
-	u8 i;
+	unsigned int i;
 
 	ret = regmap_read(mux->regmap, mux->reg, &val);
 	if (ret)
-- 
2.30.2




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* [PATCH 4.9 132/240] scsi: jazz_esp: Add IRQ check
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (130 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 131/240] clk: uniphier: Fix potential infinite loop Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 133/240] scsi: sun3x_esp: " Greg Kroah-Hartman
                   ` (112 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Sergey Shtylyov, Martin K. Petersen,
	Sasha Levin

From: Sergey Shtylyov <s.shtylyov@omprussia.ru>

[ Upstream commit 38fca15c29db6ed06e894ac194502633e2a7d1fb ]

The driver neglects to check the result of platform_get_irq()'s call and
blithely passes the negative error codes to request_irq() (which takes
*unsigned* IRQ #), causing it to fail with -EINVAL, overriding the real
error code.  Stop calling request_irq() with the invalid IRQ #s.

Link: https://lore.kernel.org/r/594aa9ae-2215-49f6-f73c-33bd38989912@omprussia.ru
Fixes: 352e921f0dd4 ("[SCSI] jazz_esp: converted to use esp_core")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/scsi/jazz_esp.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/jazz_esp.c b/drivers/scsi/jazz_esp.c
index 9aaa74e349cc..65f0dbfc3a45 100644
--- a/drivers/scsi/jazz_esp.c
+++ b/drivers/scsi/jazz_esp.c
@@ -170,7 +170,9 @@ static int esp_jazz_probe(struct platform_device *dev)
 	if (!esp->command_block)
 		goto fail_unmap_regs;
 
-	host->irq = platform_get_irq(dev, 0);
+	host->irq = err = platform_get_irq(dev, 0);
+	if (err < 0)
+		goto fail_unmap_command_block;
 	err = request_irq(host->irq, scsi_esp_intr, IRQF_SHARED, "ESP", esp);
 	if (err < 0)
 		goto fail_unmap_command_block;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 133/240] scsi: sun3x_esp: Add IRQ check
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (131 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 132/240] scsi: jazz_esp: Add IRQ check Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 134/240] scsi: sni_53c710: " Greg Kroah-Hartman
                   ` (111 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Sergey Shtylyov, Martin K. Petersen,
	Sasha Levin

From: Sergey Shtylyov <s.shtylyov@omprussia.ru>

[ Upstream commit 14b321380eb333c82853d7d612d0995f05f88fdc ]

The driver neglects to check the result of platform_get_irq()'s call and
blithely passes the negative error codes to request_irq() (which takes
*unsigned* IRQ #), causing it to fail with -EINVAL, overriding the real
error code.  Stop calling request_irq() with the invalid IRQ #s.

Link: https://lore.kernel.org/r/363eb4c8-a3bf-4dc9-2a9e-90f349030a15@omprussia.ru
Fixes: 0bb67f181834 ("[SCSI] sun3x_esp: convert to esp_scsi")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/scsi/sun3x_esp.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/sun3x_esp.c b/drivers/scsi/sun3x_esp.c
index d50c5ed8f428..167ae2d29e47 100644
--- a/drivers/scsi/sun3x_esp.c
+++ b/drivers/scsi/sun3x_esp.c
@@ -233,7 +233,9 @@ static int esp_sun3x_probe(struct platform_device *dev)
 	if (!esp->command_block)
 		goto fail_unmap_regs_dma;
 
-	host->irq = platform_get_irq(dev, 0);
+	host->irq = err = platform_get_irq(dev, 0);
+	if (err < 0)
+		goto fail_unmap_command_block;
 	err = request_irq(host->irq, scsi_esp_intr, IRQF_SHARED,
 			  "SUN3X ESP", esp);
 	if (err < 0)
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 134/240] scsi: sni_53c710: Add IRQ check
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (132 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 133/240] scsi: sun3x_esp: " Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 135/240] HSI: core: fix resource leaks in hsi_add_client_from_dt() Greg Kroah-Hartman
                   ` (110 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Sergey Shtylyov, Martin K. Petersen,
	Sasha Levin

From: Sergey Shtylyov <s.shtylyov@omprussia.ru>

[ Upstream commit 1160d61bc51e87e509cfaf9da50a0060f67b6de4 ]

The driver neglects to check the result of platform_get_irq()'s call and
blithely passes the negative error codes to request_irq() (which takes
*unsigned* IRQ #s), causing it to fail with -EINVAL (overridden by -ENODEV
further below).  Stop calling request_irq() with the invalid IRQ #s.

Link: https://lore.kernel.org/r/8f4b8fa5-8251-b977-70a1-9099bcb4bb17@omprussia.ru
Fixes: c27d85f3f3c5 ("[SCSI] SNI RM 53c710 driver")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/scsi/sni_53c710.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/sni_53c710.c b/drivers/scsi/sni_53c710.c
index b0f5220ae23a..fad68cb028d6 100644
--- a/drivers/scsi/sni_53c710.c
+++ b/drivers/scsi/sni_53c710.c
@@ -71,6 +71,7 @@ static int snirm710_probe(struct platform_device *dev)
 	struct NCR_700_Host_Parameters *hostdata;
 	struct Scsi_Host *host;
 	struct  resource *res;
+	int rc;
 
 	res = platform_get_resource(dev, IORESOURCE_MEM, 0);
 	if (!res)
@@ -96,7 +97,9 @@ static int snirm710_probe(struct platform_device *dev)
 		goto out_kfree;
 	host->this_id = 7;
 	host->base = base;
-	host->irq = platform_get_irq(dev, 0);
+	host->irq = rc = platform_get_irq(dev, 0);
+	if (rc < 0)
+		goto out_put_host;
 	if(request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "snirm710", host)) {
 		printk(KERN_ERR "snirm710: request_irq failed!\n");
 		goto out_put_host;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 135/240] HSI: core: fix resource leaks in hsi_add_client_from_dt()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (133 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 134/240] scsi: sni_53c710: " Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 136/240] x86/events/amd/iommu: Fix sysfs type mismatch Greg Kroah-Hartman
                   ` (109 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Dan Carpenter, Jason Gunthorpe,
	Sebastian Reichel, Sasha Levin

From: Dan Carpenter <dan.carpenter@oracle.com>

[ Upstream commit 5c08b0f75575648032f309a6f58294453423ed93 ]

If some of the allocations fail between the dev_set_name() and the
device_register() then the name will not be freed.  Fix this by
moving dev_set_name() directly in front of the call to device_register().

Fixes: a2aa24734d9d ("HSI: Add common DT binding for HSI client devices")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hsi/hsi_core.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/hsi/hsi_core.c b/drivers/hsi/hsi_core.c
index c2a2a9795b0b..e9d63b966caf 100644
--- a/drivers/hsi/hsi_core.c
+++ b/drivers/hsi/hsi_core.c
@@ -223,8 +223,6 @@ static void hsi_add_client_from_dt(struct hsi_port *port,
 	if (err)
 		goto err;
 
-	dev_set_name(&cl->device, "%s", name);
-
 	err = hsi_of_property_parse_mode(client, "hsi-mode", &mode);
 	if (err) {
 		err = hsi_of_property_parse_mode(client, "hsi-rx-mode",
@@ -307,6 +305,7 @@ static void hsi_add_client_from_dt(struct hsi_port *port,
 	cl->device.release = hsi_client_release;
 	cl->device.of_node = client;
 
+	dev_set_name(&cl->device, "%s", name);
 	if (device_register(&cl->device) < 0) {
 		pr_err("hsi: failed to register client: %s\n", name);
 		put_device(&cl->device);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 136/240] x86/events/amd/iommu: Fix sysfs type mismatch
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (134 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 135/240] HSI: core: fix resource leaks in hsi_add_client_from_dt() Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 137/240] HID: plantronics: Workaround for double volume key presses Greg Kroah-Hartman
                   ` (108 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Nathan Chancellor,
	Peter Zijlstra (Intel),
	Sasha Levin

From: Nathan Chancellor <nathan@kernel.org>

[ Upstream commit de5bc7b425d4c27ae5faa00ea7eb6b9780b9a355 ]

dev_attr_show() calls _iommu_event_show() via an indirect call but
_iommu_event_show()'s type does not currently match the type of the
show() member in 'struct device_attribute', resulting in a Control Flow
Integrity violation.

$ cat /sys/devices/amd_iommu_1/events/mem_dte_hit
csource=0x0a

$ dmesg | grep "CFI failure"
[ 3526.735140] CFI failure (target: _iommu_event_show...):

Change _iommu_event_show() and 'struct amd_iommu_event_desc' to
'struct device_attribute' so that there is no more CFI violation.

Fixes: 7be6296fdd75 ("perf/x86/amd: AMD IOMMU Performance Counter PERF uncore PMU implementation")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20210415001112.3024673-1-nathan@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/x86/events/amd/iommu.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/x86/events/amd/iommu.c b/arch/x86/events/amd/iommu.c
index b28200dea715..2bbf3fba8097 100644
--- a/arch/x86/events/amd/iommu.c
+++ b/arch/x86/events/amd/iommu.c
@@ -80,12 +80,12 @@ static struct attribute_group amd_iommu_format_group = {
  * sysfs events attributes
  *---------------------------------------------*/
 struct amd_iommu_event_desc {
-	struct kobj_attribute attr;
+	struct device_attribute attr;
 	const char *event;
 };
 
-static ssize_t _iommu_event_show(struct kobject *kobj,
-				struct kobj_attribute *attr, char *buf)
+static ssize_t _iommu_event_show(struct device *dev,
+				struct device_attribute *attr, char *buf)
 {
 	struct amd_iommu_event_desc *event =
 		container_of(attr, struct amd_iommu_event_desc, attr);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 137/240] HID: plantronics: Workaround for double volume key presses
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (135 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 136/240] x86/events/amd/iommu: Fix sysfs type mismatch Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 138/240] perf symbols: Fix dso__fprintf_symbols_by_name() to return the number of printed chars Greg Kroah-Hartman
                   ` (107 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Maxim Mikityanskiy, Jiri Kosina, Sasha Levin

From: Maxim Mikityanskiy <maxtram95@gmail.com>

[ Upstream commit f567d6ef8606fb427636e824c867229ecb5aefab ]

Plantronics Blackwire 3220 Series (047f:c056) sends HID reports twice
for each volume key press. This patch adds a quirk to hid-plantronics
for this product ID, which will ignore the second volume key press if
it happens within 5 ms from the last one that was handled.

The patch was tested on the mentioned model only, it shouldn't affect
other models, however, this quirk might be needed for them too.
Auto-repeat (when a key is held pressed) is not affected, because the
rate is about 3 times per second, which is far less frequent than once
in 5 ms.

Fixes: 81bb773faed7 ("HID: plantronics: Update to map volume up/down controls")
Signed-off-by: Maxim Mikityanskiy <maxtram95@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hid/hid-ids.h         |  1 +
 drivers/hid/hid-plantronics.c | 60 +++++++++++++++++++++++++++++++++--
 include/linux/hid.h           |  2 ++
 3 files changed, 61 insertions(+), 2 deletions(-)

diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index c4a53fc648e9..1f641870d860 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -816,6 +816,7 @@
 #define USB_DEVICE_ID_ORTEK_WKB2000	0x2000
 
 #define USB_VENDOR_ID_PLANTRONICS	0x047f
+#define USB_DEVICE_ID_PLANTRONICS_BLACKWIRE_3220_SERIES	0xc056
 
 #define USB_VENDOR_ID_PANASONIC		0x04da
 #define USB_DEVICE_ID_PANABOARD_UBT780	0x1044
diff --git a/drivers/hid/hid-plantronics.c b/drivers/hid/hid-plantronics.c
index 584b10d3fc3d..460711c1124a 100644
--- a/drivers/hid/hid-plantronics.c
+++ b/drivers/hid/hid-plantronics.c
@@ -16,6 +16,7 @@
 
 #include <linux/hid.h>
 #include <linux/module.h>
+#include <linux/jiffies.h>
 
 #define PLT_HID_1_0_PAGE	0xffa00000
 #define PLT_HID_2_0_PAGE	0xffa20000
@@ -39,6 +40,16 @@
 #define PLT_ALLOW_CONSUMER (field->application == HID_CP_CONSUMERCONTROL && \
 			    (usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER)
 
+#define PLT_QUIRK_DOUBLE_VOLUME_KEYS BIT(0)
+
+#define PLT_DOUBLE_KEY_TIMEOUT 5 /* ms */
+
+struct plt_drv_data {
+	unsigned long device_type;
+	unsigned long last_volume_key_ts;
+	u32 quirks;
+};
+
 static int plantronics_input_mapping(struct hid_device *hdev,
 				     struct hid_input *hi,
 				     struct hid_field *field,
@@ -46,7 +57,8 @@ static int plantronics_input_mapping(struct hid_device *hdev,
 				     unsigned long **bit, int *max)
 {
 	unsigned short mapped_key;
-	unsigned long plt_type = (unsigned long)hid_get_drvdata(hdev);
+	struct plt_drv_data *drv_data = hid_get_drvdata(hdev);
+	unsigned long plt_type = drv_data->device_type;
 
 	/* special case for PTT products */
 	if (field->application == HID_GD_JOYSTICK)
@@ -108,6 +120,30 @@ mapped:
 	return 1;
 }
 
+static int plantronics_event(struct hid_device *hdev, struct hid_field *field,
+			     struct hid_usage *usage, __s32 value)
+{
+	struct plt_drv_data *drv_data = hid_get_drvdata(hdev);
+
+	if (drv_data->quirks & PLT_QUIRK_DOUBLE_VOLUME_KEYS) {
+		unsigned long prev_ts, cur_ts;
+
+		/* Usages are filtered in plantronics_usages. */
+
+		if (!value) /* Handle key presses only. */
+			return 0;
+
+		prev_ts = drv_data->last_volume_key_ts;
+		cur_ts = jiffies;
+		if (jiffies_to_msecs(cur_ts - prev_ts) <= PLT_DOUBLE_KEY_TIMEOUT)
+			return 1; /* Ignore the repeated key. */
+
+		drv_data->last_volume_key_ts = cur_ts;
+	}
+
+	return 0;
+}
+
 static unsigned long plantronics_device_type(struct hid_device *hdev)
 {
 	unsigned i, col_page;
@@ -136,15 +172,24 @@ exit:
 static int plantronics_probe(struct hid_device *hdev,
 			     const struct hid_device_id *id)
 {
+	struct plt_drv_data *drv_data;
 	int ret;
 
+	drv_data = devm_kzalloc(&hdev->dev, sizeof(*drv_data), GFP_KERNEL);
+	if (!drv_data)
+		return -ENOMEM;
+
 	ret = hid_parse(hdev);
 	if (ret) {
 		hid_err(hdev, "parse failed\n");
 		goto err;
 	}
 
-	hid_set_drvdata(hdev, (void *)plantronics_device_type(hdev));
+	drv_data->device_type = plantronics_device_type(hdev);
+	drv_data->quirks = id->driver_data;
+	drv_data->last_volume_key_ts = jiffies - msecs_to_jiffies(PLT_DOUBLE_KEY_TIMEOUT);
+
+	hid_set_drvdata(hdev, drv_data);
 
 	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT |
 		HID_CONNECT_HIDINPUT_FORCE | HID_CONNECT_HIDDEV_FORCE);
@@ -156,15 +201,26 @@ err:
 }
 
 static const struct hid_device_id plantronics_devices[] = {
+	{ HID_USB_DEVICE(USB_VENDOR_ID_PLANTRONICS,
+					 USB_DEVICE_ID_PLANTRONICS_BLACKWIRE_3220_SERIES),
+		.driver_data = PLT_QUIRK_DOUBLE_VOLUME_KEYS },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_PLANTRONICS, HID_ANY_ID) },
 	{ }
 };
 MODULE_DEVICE_TABLE(hid, plantronics_devices);
 
+static const struct hid_usage_id plantronics_usages[] = {
+	{ HID_CP_VOLUMEUP, EV_KEY, HID_ANY_ID },
+	{ HID_CP_VOLUMEDOWN, EV_KEY, HID_ANY_ID },
+	{ HID_TERMINATOR, HID_TERMINATOR, HID_TERMINATOR }
+};
+
 static struct hid_driver plantronics_driver = {
 	.name = "plantronics",
 	.id_table = plantronics_devices,
+	.usage_table = plantronics_usages,
 	.input_mapping = plantronics_input_mapping,
+	.event = plantronics_event,
 	.probe = plantronics_probe,
 };
 module_hid_driver(plantronics_driver);
diff --git a/include/linux/hid.h b/include/linux/hid.h
index 981657075f05..41c372573a28 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -248,6 +248,8 @@ struct hid_item {
 #define HID_CP_SELECTION	0x000c0080
 #define HID_CP_MEDIASELECTION	0x000c0087
 #define HID_CP_SELECTDISC	0x000c00ba
+#define HID_CP_VOLUMEUP		0x000c00e9
+#define HID_CP_VOLUMEDOWN	0x000c00ea
 #define HID_CP_PLAYBACKSPEED	0x000c00f1
 #define HID_CP_PROXIMITY	0x000c0109
 #define HID_CP_SPEAKERSYSTEM	0x000c0160
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 138/240] perf symbols: Fix dso__fprintf_symbols_by_name() to return the number of printed chars
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (136 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 137/240] HID: plantronics: Workaround for double volume key presses Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 139/240] net: lapbether: Prevent racing when checking whether the netif is running Greg Kroah-Hartman
                   ` (106 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Yang Li, Alexander Shishkin,
	Ingo Molnar, Jiri Olsa, Mark Rutland, Namhyung Kim,
	Peter Zijlstra, Srikar Dronamraju, Arnaldo Carvalho de Melo,
	Sasha Levin

From: Arnaldo Carvalho de Melo <acme@redhat.com>

[ Upstream commit 210e4c89ef61432040c6cd828fefa441f4887186 ]

The 'ret' variable was initialized to zero but then it was not updated
from the fprintf() return, fix it.

Reported-by: Yang Li <yang.lee@linux.alibaba.com>
cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
cc: Ingo Molnar <mingo@redhat.com>
cc: Jiri Olsa <jolsa@redhat.com>
cc: Mark Rutland <mark.rutland@arm.com>
cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Fixes: 90f18e63fbd00513 ("perf symbols: List symbols in a dso in ascending name order")
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 tools/perf/util/symbol_fprintf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/symbol_fprintf.c b/tools/perf/util/symbol_fprintf.c
index a680bdaa65dc..060957aeb79a 100644
--- a/tools/perf/util/symbol_fprintf.c
+++ b/tools/perf/util/symbol_fprintf.c
@@ -64,7 +64,7 @@ size_t dso__fprintf_symbols_by_name(struct dso *dso,
 
 	for (nd = rb_first(&dso->symbol_names[type]); nd; nd = rb_next(nd)) {
 		pos = rb_entry(nd, struct symbol_name_rb_node, rb_node);
-		fprintf(fp, "%s\n", pos->sym.name);
+		ret += fprintf(fp, "%s\n", pos->sym.name);
 	}
 
 	return ret;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 139/240] net: lapbether: Prevent racing when checking whether the netif is running
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (137 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 138/240] perf symbols: Fix dso__fprintf_symbols_by_name() to return the number of printed chars Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 140/240] powerpc/prom: Mark identical_pvr_fixup as __init Greg Kroah-Hartman
                   ` (105 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Xie He, Martin Schiller,
	David S. Miller, Sasha Levin

From: Xie He <xie.he.0141@gmail.com>

[ Upstream commit 5acd0cfbfbb5a688da1bfb1a2152b0c855115a35 ]

There are two "netif_running" checks in this driver. One is in
"lapbeth_xmit" and the other is in "lapbeth_rcv". They serve to make
sure that the LAPB APIs called in these functions are called before
"lapb_unregister" is called by the "ndo_stop" function.

However, these "netif_running" checks are unreliable, because it's
possible that immediately after "netif_running" returns true, "ndo_stop"
is called (which causes "lapb_unregister" to be called).

This patch adds locking to make sure "lapbeth_xmit" and "lapbeth_rcv" can
reliably check and ensure the netif is running while doing their work.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Xie He <xie.he.0141@gmail.com>
Acked-by: Martin Schiller <ms@dev.tdt.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wan/lapbether.c | 32 +++++++++++++++++++++++++-------
 1 file changed, 25 insertions(+), 7 deletions(-)

diff --git a/drivers/net/wan/lapbether.c b/drivers/net/wan/lapbether.c
index 666bbacb8cb4..24daa1d0e9c5 100644
--- a/drivers/net/wan/lapbether.c
+++ b/drivers/net/wan/lapbether.c
@@ -56,6 +56,8 @@ struct lapbethdev {
 	struct list_head	node;
 	struct net_device	*ethdev;	/* link to ethernet device */
 	struct net_device	*axdev;		/* lapbeth device (lapb#) */
+	bool			up;
+	spinlock_t		up_lock;	/* Protects "up" */
 };
 
 static LIST_HEAD(lapbeth_devices);
@@ -103,8 +105,9 @@ static int lapbeth_rcv(struct sk_buff *skb, struct net_device *dev, struct packe
 	rcu_read_lock();
 	lapbeth = lapbeth_get_x25_dev(dev);
 	if (!lapbeth)
-		goto drop_unlock;
-	if (!netif_running(lapbeth->axdev))
+		goto drop_unlock_rcu;
+	spin_lock_bh(&lapbeth->up_lock);
+	if (!lapbeth->up)
 		goto drop_unlock;
 
 	len = skb->data[0] + skb->data[1] * 256;
@@ -119,11 +122,14 @@ static int lapbeth_rcv(struct sk_buff *skb, struct net_device *dev, struct packe
 		goto drop_unlock;
 	}
 out:
+	spin_unlock_bh(&lapbeth->up_lock);
 	rcu_read_unlock();
 	return 0;
 drop_unlock:
 	kfree_skb(skb);
 	goto out;
+drop_unlock_rcu:
+	rcu_read_unlock();
 drop:
 	kfree_skb(skb);
 	return 0;
@@ -151,13 +157,11 @@ static int lapbeth_data_indication(struct net_device *dev, struct sk_buff *skb)
 static netdev_tx_t lapbeth_xmit(struct sk_buff *skb,
 				      struct net_device *dev)
 {
+	struct lapbethdev *lapbeth = netdev_priv(dev);
 	int err;
 
-	/*
-	 * Just to be *really* sure not to send anything if the interface
-	 * is down, the ethernet device may have gone.
-	 */
-	if (!netif_running(dev))
+	spin_lock_bh(&lapbeth->up_lock);
+	if (!lapbeth->up)
 		goto drop;
 
 	/* There should be a pseudo header of 1 byte added by upper layers.
@@ -188,6 +192,7 @@ static netdev_tx_t lapbeth_xmit(struct sk_buff *skb,
 		goto drop;
 	}
 out:
+	spin_unlock_bh(&lapbeth->up_lock);
 	return NETDEV_TX_OK;
 drop:
 	kfree_skb(skb);
@@ -279,6 +284,7 @@ static const struct lapb_register_struct lapbeth_callbacks = {
  */
 static int lapbeth_open(struct net_device *dev)
 {
+	struct lapbethdev *lapbeth = netdev_priv(dev);
 	int err;
 
 	if ((err = lapb_register(dev, &lapbeth_callbacks)) != LAPB_OK) {
@@ -286,13 +292,22 @@ static int lapbeth_open(struct net_device *dev)
 		return -ENODEV;
 	}
 
+	spin_lock_bh(&lapbeth->up_lock);
+	lapbeth->up = true;
+	spin_unlock_bh(&lapbeth->up_lock);
+
 	return 0;
 }
 
 static int lapbeth_close(struct net_device *dev)
 {
+	struct lapbethdev *lapbeth = netdev_priv(dev);
 	int err;
 
+	spin_lock_bh(&lapbeth->up_lock);
+	lapbeth->up = false;
+	spin_unlock_bh(&lapbeth->up_lock);
+
 	if ((err = lapb_unregister(dev)) != LAPB_OK)
 		pr_err("lapb_unregister error: %d\n", err);
 
@@ -350,6 +365,9 @@ static int lapbeth_new_device(struct net_device *dev)
 	dev_hold(dev);
 	lapbeth->ethdev = dev;
 
+	lapbeth->up = false;
+	spin_lock_init(&lapbeth->up_lock);
+
 	rc = -EIO;
 	if (register_netdevice(ndev))
 		goto fail;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 140/240] powerpc/prom: Mark identical_pvr_fixup as __init
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (138 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 139/240] net: lapbether: Prevent racing when checking whether the netif is running Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 141/240] ALSA: core: remove redundant spin_lock pair in snd_card_disconnect Greg Kroah-Hartman
                   ` (104 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Nathan Chancellor, Michael Ellerman,
	Sasha Levin

From: Nathan Chancellor <nathan@kernel.org>

[ Upstream commit 1ef1dd9c7ed27b080445e1576e8a05957e0e4dfc ]

If identical_pvr_fixup() is not inlined, there are two modpost warnings:

WARNING: modpost: vmlinux.o(.text+0x54e8): Section mismatch in reference
from the function identical_pvr_fixup() to the function
.init.text:of_get_flat_dt_prop()
The function identical_pvr_fixup() references
the function __init of_get_flat_dt_prop().
This is often because identical_pvr_fixup lacks a __init
annotation or the annotation of of_get_flat_dt_prop is wrong.

WARNING: modpost: vmlinux.o(.text+0x551c): Section mismatch in reference
from the function identical_pvr_fixup() to the function
.init.text:identify_cpu()
The function identical_pvr_fixup() references
the function __init identify_cpu().
This is often because identical_pvr_fixup lacks a __init
annotation or the annotation of identify_cpu is wrong.

identical_pvr_fixup() calls two functions marked as __init and is only
called by a function marked as __init so it should be marked as __init
as well. At the same time, remove the inline keywork as it is not
necessary to inline this function. The compiler is still free to do so
if it feels it is worthwhile since commit 889b3c1245de ("compiler:
remove CONFIG_OPTIMIZE_INLINING entirely").

Fixes: 14b3d926a22b ("[POWERPC] 4xx: update 440EP(x)/440GR(x) identical PVR issue workaround")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://github.com/ClangBuiltLinux/linux/issues/1316
Link: https://lore.kernel.org/r/20210302200829.2680663-1-nathan@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/powerpc/kernel/prom.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index b868f07c4246..11b4ecec04ee 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -262,7 +262,7 @@ static struct feature_property {
 };
 
 #if defined(CONFIG_44x) && defined(CONFIG_PPC_FPU)
-static inline void identical_pvr_fixup(unsigned long node)
+static __init void identical_pvr_fixup(unsigned long node)
 {
 	unsigned int pvr;
 	const char *model = of_get_flat_dt_prop(node, "model", NULL);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 141/240] ALSA: core: remove redundant spin_lock pair in snd_card_disconnect
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (139 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 140/240] powerpc/prom: Mark identical_pvr_fixup as __init Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 142/240] nfc: pn533: prevent potential memory corruption Greg Kroah-Hartman
                   ` (103 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Jia Zhou, Yi Wang, Takashi Iwai, Sasha Levin

From: Jia Zhou <zhou.jia2@zte.com.cn>

[ Upstream commit abc21649b3e5c34b143bf86f0c78e33d5815e250 ]

modification in commit 2a3f7221acdd ("ALSA: core: Fix card races between
register and disconnect") resulting in this problem.

Fixes: 2a3f7221acdd ("ALSA: core: Fix card races between register and disconnect")
Signed-off-by: Jia Zhou <zhou.jia2@zte.com.cn>
Signed-off-by: Yi Wang <wang.yi59@zte.com.cn>
Link: https://lore.kernel.org/r/1616989007-34429-1-git-send-email-wang.yi59@zte.com.cn
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/core/init.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/sound/core/init.c b/sound/core/init.c
index 02e96c580cb7..59377e579adb 100644
--- a/sound/core/init.c
+++ b/sound/core/init.c
@@ -406,10 +406,8 @@ int snd_card_disconnect(struct snd_card *card)
 		return 0;
 	}
 	card->shutdown = 1;
-	spin_unlock(&card->files_lock);
 
 	/* replace file->f_op with special dummy operations */
-	spin_lock(&card->files_lock);
 	list_for_each_entry(mfile, &card->files_list, list) {
 		/* it's critical part, use endless loop */
 		/* we have no room to fail */
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 142/240] nfc: pn533: prevent potential memory corruption
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (140 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 141/240] ALSA: core: remove redundant spin_lock pair in snd_card_disconnect Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 143/240] ALSA: usb-audio: Add error checks for usb_driver_claim_interface() calls Greg Kroah-Hartman
                   ` (102 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Dan Carpenter, David S. Miller, Sasha Levin

From: Dan Carpenter <dan.carpenter@oracle.com>

[ Upstream commit ca4d4c34ae9aa5c3c0da76662c5e549d2fc0cc86 ]

If the "type_a->nfcid_len" is too large then it would lead to memory
corruption in pn533_target_found_type_a() when we do:

	memcpy(nfc_tgt->nfcid1, tgt_type_a->nfcid_data, nfc_tgt->nfcid1_len);

Fixes: c3b1e1e8a76f ("NFC: Export NFCID1 from pn533")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/nfc/pn533/pn533.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/nfc/pn533/pn533.c b/drivers/nfc/pn533/pn533.c
index d9c55830b2b2..6c495664d2cb 100644
--- a/drivers/nfc/pn533/pn533.c
+++ b/drivers/nfc/pn533/pn533.c
@@ -678,6 +678,9 @@ static bool pn533_target_type_a_is_valid(struct pn533_target_type_a *type_a,
 	if (PN533_TYPE_A_SEL_CASCADE(type_a->sel_res) != 0)
 		return false;
 
+	if (type_a->nfcid_len > NFC_NFCID1_MAXSIZE)
+		return false;
+
 	return true;
 }
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 143/240] ALSA: usb-audio: Add error checks for usb_driver_claim_interface() calls
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (141 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 142/240] nfc: pn533: prevent potential memory corruption Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 144/240] liquidio: Fix unintented sign extension of a left shift of a u16 Greg Kroah-Hartman
                   ` (101 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, coverity-bot, Takashi Iwai, Sasha Levin

From: Takashi Iwai <tiwai@suse.de>

[ Upstream commit 5fb45414ae03421255593fd5556aa2d1d82303aa ]

There are a few calls of usb_driver_claim_interface() but all of those
miss the proper error checks, as reported by Coverity.  This patch
adds those missing checks.

Along with it, replace the magic pointer with -1 with a constant
USB_AUDIO_IFACE_UNUSED for better readability.

Reported-by: coverity-bot <keescook+coverity-bot@chromium.org>
Addresses-Coverity-ID: 1475943 ("Error handling issues")
Addresses-Coverity-ID: 1475944 ("Error handling issues")
Addresses-Coverity-ID: 1475945 ("Error handling issues")
Fixes: b1ce7ba619d9 ("ALSA: usb-audio: claim autodetected PCM interfaces all at once")
Fixes: e5779998bf8b ("ALSA: usb-audio: refactor code")
Link: https://lore.kernel.org/r/202104051059.FB7F3016@keescook
Link: https://lore.kernel.org/r/20210406113534.30455-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/usb/card.c     | 14 +++++++-------
 sound/usb/quirks.c   | 16 ++++++++++++----
 sound/usb/usbaudio.h |  2 ++
 3 files changed, 21 insertions(+), 11 deletions(-)

diff --git a/sound/usb/card.c b/sound/usb/card.c
index 023a36a4922b..6c5be4e3cb9d 100644
--- a/sound/usb/card.c
+++ b/sound/usb/card.c
@@ -183,9 +183,8 @@ static int snd_usb_create_stream(struct snd_usb_audio *chip, int ctrlif, int int
 				ctrlif, interface);
 			return -EINVAL;
 		}
-		usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
-
-		return 0;
+		return usb_driver_claim_interface(&usb_audio_driver, iface,
+						  USB_AUDIO_IFACE_UNUSED);
 	}
 
 	if ((altsd->bInterfaceClass != USB_CLASS_AUDIO &&
@@ -205,7 +204,8 @@ static int snd_usb_create_stream(struct snd_usb_audio *chip, int ctrlif, int int
 
 	if (! snd_usb_parse_audio_interface(chip, interface)) {
 		usb_set_interface(dev, interface, 0); /* reset the current interface */
-		usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
+		return usb_driver_claim_interface(&usb_audio_driver, iface,
+						  USB_AUDIO_IFACE_UNUSED);
 	}
 
 	return 0;
@@ -665,7 +665,7 @@ static void usb_audio_disconnect(struct usb_interface *intf)
 	struct snd_card *card;
 	struct list_head *p;
 
-	if (chip == (void *)-1L)
+	if (chip == USB_AUDIO_IFACE_UNUSED)
 		return;
 
 	card = chip->card;
@@ -765,7 +765,7 @@ static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message)
 	struct usb_mixer_interface *mixer;
 	struct list_head *p;
 
-	if (chip == (void *)-1L)
+	if (chip == USB_AUDIO_IFACE_UNUSED)
 		return 0;
 
 	if (!chip->num_suspended_intf++) {
@@ -795,7 +795,7 @@ static int __usb_audio_resume(struct usb_interface *intf, bool reset_resume)
 	struct list_head *p;
 	int err = 0;
 
-	if (chip == (void *)-1L)
+	if (chip == USB_AUDIO_IFACE_UNUSED)
 		return 0;
 
 	atomic_inc(&chip->active); /* avoid autopm */
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 6b9e6b57d58d..02b4d0638e00 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -66,8 +66,12 @@ static int create_composite_quirk(struct snd_usb_audio *chip,
 		if (!iface)
 			continue;
 		if (quirk->ifnum != probed_ifnum &&
-		    !usb_interface_claimed(iface))
-			usb_driver_claim_interface(driver, iface, (void *)-1L);
+		    !usb_interface_claimed(iface)) {
+			err = usb_driver_claim_interface(driver, iface,
+							 USB_AUDIO_IFACE_UNUSED);
+			if (err < 0)
+				return err;
+		}
 	}
 
 	return 0;
@@ -399,8 +403,12 @@ static int create_autodetect_quirks(struct snd_usb_audio *chip,
 			continue;
 
 		err = create_autodetect_quirk(chip, iface, driver);
-		if (err >= 0)
-			usb_driver_claim_interface(driver, iface, (void *)-1L);
+		if (err >= 0) {
+			err = usb_driver_claim_interface(driver, iface,
+							 USB_AUDIO_IFACE_UNUSED);
+			if (err < 0)
+				return err;
+		}
 	}
 
 	return 0;
diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h
index f4ee83c8e0b2..62456a806bb4 100644
--- a/sound/usb/usbaudio.h
+++ b/sound/usb/usbaudio.h
@@ -63,6 +63,8 @@ struct snd_usb_audio {
 	struct usb_host_interface *ctrl_intf;	/* the audio control interface */
 };
 
+#define USB_AUDIO_IFACE_UNUSED	((void *)-1L)
+
 #define usb_audio_err(chip, fmt, args...) \
 	dev_err(&(chip)->dev->dev, fmt, ##args)
 #define usb_audio_warn(chip, fmt, args...) \
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 144/240] liquidio: Fix unintented sign extension of a left shift of a u16
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (142 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 143/240] ALSA: usb-audio: Add error checks for usb_driver_claim_interface() calls Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 145/240] powerpc/perf: Fix PMU constraint check for EBB events Greg Kroah-Hartman
                   ` (100 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Colin Ian King, David S. Miller, Sasha Levin

From: Colin Ian King <colin.king@canonical.com>

[ Upstream commit 298b58f00c0f86868ea717426beb5c1198772f81 ]

The macro CN23XX_PEM_BAR1_INDEX_REG is being used to shift oct->pcie_port
(a u16) left 24 places. There are two subtle issues here, first the
shift gets promoted to an signed int and then sign extended to a u64.
If oct->pcie_port is 0x80 or more then the upper bits get sign extended
to 1. Secondly shfiting a u16 24 bits will lead to an overflow so it
needs to be cast to a u64 for all the bits to not overflow.

It is entirely possible that the u16 port value is never large enough
for this to fail, but it is useful to fix unintended overflows such
as this.

Fix this by casting the port parameter to the macro to a u64 before
the shift.

Addresses-Coverity: ("Unintended sign extension")
Fixes: 5bc67f587ba7 ("liquidio: CN23XX register definitions")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/cavium/liquidio/cn23xx_pf_regs.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_regs.h b/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_regs.h
index 03d79d95ab75..d7e0d2ce15c1 100644
--- a/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_regs.h
+++ b/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_regs.h
@@ -526,7 +526,7 @@
 #define    CN23XX_BAR1_INDEX_OFFSET                3
 
 #define    CN23XX_PEM_BAR1_INDEX_REG(port, idx)		\
-		(CN23XX_PEM_BAR1_INDEX_START + ((port) << CN23XX_PEM_OFFSET) + \
+		(CN23XX_PEM_BAR1_INDEX_START + (((u64)port) << CN23XX_PEM_OFFSET) + \
 		 ((idx) << CN23XX_BAR1_INDEX_OFFSET))
 
 /*############################ DPI #########################*/
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 145/240] powerpc/perf: Fix PMU constraint check for EBB events
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (143 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 144/240] liquidio: Fix unintented sign extension of a left shift of a u16 Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 146/240] powerpc: iommu: fix build when neither PCI or IBMVIO is set Greg Kroah-Hartman
                   ` (99 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Thadeu Lima de Souza Cascardo,
	Athira Rajeev, Michael Ellerman, Sasha Levin

From: Athira Rajeev <atrajeev@linux.vnet.ibm.com>

[ Upstream commit 10f8f96179ecc7f69c927f6d231f6d02736cea83 ]

The power PMU group constraints includes check for EBB events to make
sure all events in a group must agree on EBB. This will prevent
scheduling EBB and non-EBB events together. But in the existing check,
settings for constraint mask and value is interchanged. Patch fixes the
same.

Before the patch, PMU selftest "cpu_event_pinned_vs_ebb_test" fails with
below in dmesg logs. This happens because EBB event gets enabled along
with a non-EBB cpu event.

  [35600.453346] cpu_event_pinne[41326]: illegal instruction (4)
  at 10004a18 nip 10004a18 lr 100049f8 code 1 in
  cpu_event_pinned_vs_ebb_test[10000000+10000]

Test results after the patch:

  $ ./pmu/ebb/cpu_event_pinned_vs_ebb_test
  test: cpu_event_pinned_vs_ebb
  tags: git_version:v5.12-rc5-93-gf28c3125acd3-dirty
  Binding to cpu 8
  EBB Handler is at 0x100050c8
  read error on event 0x7fffe6bd4040!
  PM_RUN_INST_CMPL: result 9872 running/enabled 37930432
  success: cpu_event_pinned_vs_ebb

This bug was hidden by other logic until commit 1908dc911792 (perf:
Tweak perf_event_attr::exclusive semantics).

Fixes: 4df489991182 ("powerpc/perf: Add power8 EBB support")
Reported-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
[mpe: Mention commit 1908dc911792]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1617725761-1464-1-git-send-email-atrajeev@linux.vnet.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/powerpc/perf/isa207-common.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/perf/isa207-common.c b/arch/powerpc/perf/isa207-common.c
index 7592a6491a9a..2d3557406424 100644
--- a/arch/powerpc/perf/isa207-common.c
+++ b/arch/powerpc/perf/isa207-common.c
@@ -139,8 +139,8 @@ ebb_bhrb:
 	 * EBB events are pinned & exclusive, so this should never actually
 	 * hit, but we leave it as a fallback in case.
 	 */
-	mask  |= CNST_EBB_VAL(ebb);
-	value |= CNST_EBB_MASK;
+	mask  |= CNST_EBB_MASK;
+	value |= CNST_EBB_VAL(ebb);
 
 	*maskp = mask;
 	*valp = value;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 146/240] powerpc: iommu: fix build when neither PCI or IBMVIO is set
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (144 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 145/240] powerpc/perf: Fix PMU constraint check for EBB events Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 147/240] mac80211: bail out if cipher schemes are invalid Greg Kroah-Hartman
                   ` (98 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, kernel test robot, Michael Ellerman,
	Randy Dunlap, Sasha Levin

From: Randy Dunlap <rdunlap@infradead.org>

[ Upstream commit b27dadecdf9102838331b9a0b41ffc1cfe288154 ]

When neither CONFIG_PCI nor CONFIG_IBMVIO is set/enabled, iommu.c has a
build error. The fault injection code is not useful in that kernel config,
so make the FAIL_IOMMU option depend on PCI || IBMVIO.

Prevents this build error (warning escalated to error):
../arch/powerpc/kernel/iommu.c:178:30: error: 'fail_iommu_bus_notifier' defined but not used [-Werror=unused-variable]
  178 | static struct notifier_block fail_iommu_bus_notifier = {

Fixes: d6b9a81b2a45 ("powerpc: IOMMU fault injection")
Reported-by: kernel test robot <lkp@intel.com>
Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210404192623.10697-1-rdunlap@infradead.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/powerpc/Kconfig.debug | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index 63292f64b25a..f66326339bc8 100644
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -348,6 +348,7 @@ config PPC_EARLY_DEBUG_CPM_ADDR
 config FAIL_IOMMU
 	bool "Fault-injection capability for IOMMU"
 	depends on FAULT_INJECTION
+	depends on PCI || IBMVIO
 	help
 	  Provide fault-injection capability for IOMMU. Each device can
 	  be selectively enabled via the fail_iommu property.
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 147/240] mac80211: bail out if cipher schemes are invalid
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (145 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 146/240] powerpc: iommu: fix build when neither PCI or IBMVIO is set Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 148/240] mt7601u: fix always true expression Greg Kroah-Hartman
                   ` (97 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Johannes Berg, Sasha Levin

From: Johannes Berg <johannes.berg@intel.com>

[ Upstream commit db878e27a98106a70315d264cc92230d84009e72 ]

If any of the cipher schemes specified by the driver are invalid, bail
out and fail the registration rather than just warning.  Otherwise, we
might later crash when we try to use the invalid cipher scheme, e.g.
if the hdr_len is (significantly) less than the pn_offs + pn_len, we'd
have an out-of-bounds access in RX validation.

Fixes: 2475b1cc0d52 ("mac80211: add generic cipher scheme support")
Link: https://lore.kernel.org/r/20210408143149.38a3a13a1b19.I6b7f5790fa0958ed8049cf02ac2a535c61e9bc96@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/mac80211/main.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index f31fd21d59ba..5f8c6f9563b0 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -1036,8 +1036,11 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 	if (local->hw.wiphy->max_scan_ie_len)
 		local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
 
-	WARN_ON(!ieee80211_cs_list_valid(local->hw.cipher_schemes,
-					 local->hw.n_cipher_schemes));
+	if (WARN_ON(!ieee80211_cs_list_valid(local->hw.cipher_schemes,
+					     local->hw.n_cipher_schemes))) {
+		result = -EINVAL;
+		goto fail_workqueue;
+	}
 
 	result = ieee80211_init_cipher_suites(local);
 	if (result < 0)
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 148/240] mt7601u: fix always true expression
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (146 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 147/240] mac80211: bail out if cipher schemes are invalid Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 149/240] net: thunderx: Fix unintentional sign extension issue Greg Kroah-Hartman
                   ` (96 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Colin Ian King, Jakub Kicinski,
	Kalle Valo, Sasha Levin

From: Colin Ian King <colin.king@canonical.com>

[ Upstream commit 87fce88658ba047ae62e83497d3f3c5dc22fa6f9 ]

Currently the expression ~nic_conf1 is always true because nic_conf1
is a u16 and according to 6.5.3.3 of the C standard the ~ operator
promotes the u16 to an integer before flipping all the bits. Thus
the top 16 bits of the integer result are all set so the expression
is always true.  If the intention was to flip all the bits of nic_conf1
then casting the integer result back to a u16 is a suitabel fix.

Interestingly static analyzers seem to thing a bitwise ! should be
used instead of ~ for this scenario, so I think the original intent
of the expression may need some extra consideration.

Addresses-Coverity: ("Logical vs. bitwise operator")
Fixes: c869f77d6abb ("add mt7601u driver")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Jakub Kicinski <kubakici@wp.pl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210225183241.1002129-1-colin.king@canonical.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/mediatek/mt7601u/eeprom.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/mediatek/mt7601u/eeprom.c b/drivers/net/wireless/mediatek/mt7601u/eeprom.c
index da6faea092d6..80d0f64205f8 100644
--- a/drivers/net/wireless/mediatek/mt7601u/eeprom.c
+++ b/drivers/net/wireless/mediatek/mt7601u/eeprom.c
@@ -106,7 +106,7 @@ mt7601u_has_tssi(struct mt7601u_dev *dev, u8 *eeprom)
 {
 	u16 nic_conf1 = get_unaligned_le16(eeprom + MT_EE_NIC_CONF_1);
 
-	return ~nic_conf1 && (nic_conf1 & MT_EE_NIC_CONF_1_TX_ALC_EN);
+	return (u16)~nic_conf1 && (nic_conf1 & MT_EE_NIC_CONF_1_TX_ALC_EN);
 }
 
 static void
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 149/240] net: thunderx: Fix unintentional sign extension issue
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (147 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 148/240] mt7601u: fix always true expression Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 150/240] i2c: cadence: add IRQ check Greg Kroah-Hartman
                   ` (95 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Colin Ian King, David S. Miller, Sasha Levin

From: Colin Ian King <colin.king@canonical.com>

[ Upstream commit e701a25840360706fe4cf5de0015913ca19c274b ]

The shifting of the u8 integers rq->caching by 26 bits to
the left will be promoted to a 32 bit signed int and then
sign-extended to a u64. In the event that rq->caching is
greater than 0x1f then all then all the upper 32 bits of
the u64 end up as also being set because of the int
sign-extension. Fix this by casting the u8 values to a
u64 before the 26 bit left shift.

Addresses-Coverity: ("Unintended sign extension")
Fixes: 4863dea3fab0 ("net: Adding support for Cavium ThunderX network controller")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/cavium/thunder/nicvf_queues.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c
index 747ef0882976..8f3d544bec0c 100644
--- a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c
+++ b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c
@@ -537,7 +537,7 @@ static void nicvf_rcv_queue_config(struct nicvf *nic, struct queue_set *qs,
 	mbx.rq.msg = NIC_MBOX_MSG_RQ_CFG;
 	mbx.rq.qs_num = qs->vnic_id;
 	mbx.rq.rq_num = qidx;
-	mbx.rq.cfg = (rq->caching << 26) | (rq->cq_qs << 19) |
+	mbx.rq.cfg = ((u64)rq->caching << 26) | (rq->cq_qs << 19) |
 			  (rq->cq_idx << 16) | (rq->cont_rbdr_qs << 9) |
 			  (rq->cont_qs_rbdr_idx << 8) |
 			  (rq->start_rbdr_qs << 1) | (rq->start_qs_rbdr_idx);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 150/240] i2c: cadence: add IRQ check
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (148 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 149/240] net: thunderx: Fix unintentional sign extension issue Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 151/240] i2c: emev2: " Greg Kroah-Hartman
                   ` (94 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Sergey Shtylyov, Wolfram Sang, Sasha Levin

From: Sergey Shtylyov <s.shtylyov@omprussia.ru>

[ Upstream commit 5581c2c5d02bc63a0edb53e061c8e97cd490646e ]

The driver neglects to check the result of platform_get_irq()'s call and
blithely passes the negative error codes to devm_request_irq() (which
takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding
an original error code.  Stop calling devm_request_irq() with invalid
IRQ #s.

Fixes: df8eb5691c48 ("i2c: Add driver for Cadence I2C controller")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/i2c/busses/i2c-cadence.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-cadence.c b/drivers/i2c/busses/i2c-cadence.c
index 45d6771fac8c..23ee1a423654 100644
--- a/drivers/i2c/busses/i2c-cadence.c
+++ b/drivers/i2c/busses/i2c-cadence.c
@@ -908,7 +908,10 @@ static int cdns_i2c_probe(struct platform_device *pdev)
 	if (IS_ERR(id->membase))
 		return PTR_ERR(id->membase);
 
-	id->irq = platform_get_irq(pdev, 0);
+	ret = platform_get_irq(pdev, 0);
+	if (ret < 0)
+		return ret;
+	id->irq = ret;
 
 	id->adap.owner = THIS_MODULE;
 	id->adap.dev.of_node = pdev->dev.of_node;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 151/240] i2c: emev2: add IRQ check
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (149 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 150/240] i2c: cadence: add IRQ check Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 152/240] i2c: jz4780: " Greg Kroah-Hartman
                   ` (93 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Sergey Shtylyov, Wolfram Sang, Sasha Levin

From: Sergey Shtylyov <s.shtylyov@omprussia.ru>

[ Upstream commit bb6129c32867baa7988f7fd2066cf18ed662d240 ]

The driver neglects to check the result of platform_get_irq()'s call and
blithely passes the negative error codes to devm_request_irq() (which
takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding
an original error code.  Stop calling devm_request_irq() with invalid
IRQ #s.

Fixes: 5faf6e1f58b4 ("i2c: emev2: add driver")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/i2c/busses/i2c-emev2.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-emev2.c b/drivers/i2c/busses/i2c-emev2.c
index 0218ba6eb26a..ad33c1e3a30f 100644
--- a/drivers/i2c/busses/i2c-emev2.c
+++ b/drivers/i2c/busses/i2c-emev2.c
@@ -398,7 +398,10 @@ static int em_i2c_probe(struct platform_device *pdev)
 
 	em_i2c_reset(&priv->adap);
 
-	priv->irq = platform_get_irq(pdev, 0);
+	ret = platform_get_irq(pdev, 0);
+	if (ret < 0)
+		goto err_clk;
+	priv->irq = ret;
 	ret = devm_request_irq(&pdev->dev, priv->irq, em_i2c_irq_handler, 0,
 				"em_i2c", priv);
 	if (ret)
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 152/240] i2c: jz4780: add IRQ check
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (150 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 151/240] i2c: emev2: " Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 153/240] i2c: sh7760: " Greg Kroah-Hartman
                   ` (92 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Sergey Shtylyov, Wolfram Sang, Sasha Levin

From: Sergey Shtylyov <s.shtylyov@omprussia.ru>

[ Upstream commit c5e5f7a8d931fb4beba245bdbc94734175fda9de ]

The driver neglects to check the result of platform_get_irq()'s call and
blithely passes the negative error codes to devm_request_irq() (which
takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding
an original error code.  Stop calling devm_request_irq() with invalid
IRQ #s.

Fixes: ba92222ed63a ("i2c: jz4780: Add i2c bus controller driver for Ingenic JZ4780")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/i2c/busses/i2c-jz4780.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-jz4780.c b/drivers/i2c/busses/i2c-jz4780.c
index 41ca9ff7b5da..4dd800c0db14 100644
--- a/drivers/i2c/busses/i2c-jz4780.c
+++ b/drivers/i2c/busses/i2c-jz4780.c
@@ -760,7 +760,10 @@ static int jz4780_i2c_probe(struct platform_device *pdev)
 
 	jz4780_i2c_writew(i2c, JZ4780_I2C_INTM, 0x0);
 
-	i2c->irq = platform_get_irq(pdev, 0);
+	ret = platform_get_irq(pdev, 0);
+	if (ret < 0)
+		goto err;
+	i2c->irq = ret;
 	ret = devm_request_irq(&pdev->dev, i2c->irq, jz4780_i2c_irq, 0,
 			       dev_name(&pdev->dev), i2c);
 	if (ret)
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 153/240] i2c: sh7760: add IRQ check
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (151 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 152/240] i2c: jz4780: " Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 154/240] MIPS: pci-legacy: stop using of_pci_range_to_resource Greg Kroah-Hartman
                   ` (91 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Sergey Shtylyov, Wolfram Sang, Sasha Levin

From: Sergey Shtylyov <s.shtylyov@omprussia.ru>

[ Upstream commit e5b2e3e742015dd2aa6bc7bcef2cb59b2de1221c ]

The driver neglects to check the result of platform_get_irq()'s call and
blithely passes the negative error codes to devm_request_irq() (which
takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding
an original error code.  Stop calling devm_request_irq() with invalid
IRQ #s.

Fixes: a26c20b1fa6d ("i2c: Renesas SH7760 I2C master driver")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/i2c/busses/i2c-sh7760.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-sh7760.c b/drivers/i2c/busses/i2c-sh7760.c
index c2005c789d2b..c79c9f542c5a 100644
--- a/drivers/i2c/busses/i2c-sh7760.c
+++ b/drivers/i2c/busses/i2c-sh7760.c
@@ -471,7 +471,10 @@ static int sh7760_i2c_probe(struct platform_device *pdev)
 		goto out2;
 	}
 
-	id->irq = platform_get_irq(pdev, 0);
+	ret = platform_get_irq(pdev, 0);
+	if (ret < 0)
+		return ret;
+	id->irq = ret;
 
 	id->adap.nr = pdev->id;
 	id->adap.algo = &sh7760_i2c_algo;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 154/240] MIPS: pci-legacy: stop using of_pci_range_to_resource
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (152 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 153/240] i2c: sh7760: " Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 155/240] powerpc/pseries: extract host bridge from pci_bus prior to bus removal Greg Kroah-Hartman
                   ` (90 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Ilya Lipnitskiy, Liviu Dudau,
	Thomas Bogendoerfer, Sasha Levin

From: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>

[ Upstream commit 3ecb9dc1581eebecaee56decac70e35365260866 ]

Mirror commit aeba3731b150 ("powerpc/pci: Fix IO space breakage after
of_pci_range_to_resource() change").

Most MIPS platforms do not define PCI_IOBASE, nor implement
pci_address_to_pio(). Moreover, IO_SPACE_LIMIT is 0xffff for most MIPS
platforms. of_pci_range_to_resource passes the _start address_ of the IO
range into pci_address_to_pio, which then checks it against
IO_SPACE_LIMIT and fails, because for MIPS platforms that use
pci-legacy (pci-lantiq, pci-rt3883, pci-mt7620), IO ranges start much
higher than 0xffff.

In fact, pci-mt7621 in staging already works around this problem, see
commit 09dd629eeabb ("staging: mt7621-pci: fix io space and properly set
resource limits")

So just stop using of_pci_range_to_resource, which does not work for
MIPS.

Fixes PCI errors like:
  pci_bus 0000:00: root bus resource [io  0xffffffff]

Fixes: 0b0b0893d49b ("of/pci: Fix the conversion of IO ranges into IO resources")
Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
Cc: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/mips/pci/pci-legacy.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/arch/mips/pci/pci-legacy.c b/arch/mips/pci/pci-legacy.c
index 2d6886f09ba3..009b840ee5ef 100644
--- a/arch/mips/pci/pci-legacy.c
+++ b/arch/mips/pci/pci-legacy.c
@@ -158,8 +158,13 @@ void pci_load_of_ranges(struct pci_controller *hose, struct device_node *node)
 			res = hose->mem_resource;
 			break;
 		}
-		if (res != NULL)
-			of_pci_range_to_resource(&range, node, res);
+		if (res != NULL) {
+			res->name = node->full_name;
+			res->flags = range.flags;
+			res->start = range.cpu_addr;
+			res->end = range.cpu_addr + range.size - 1;
+			res->parent = res->child = res->sibling = NULL;
+		}
 	}
 }
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 155/240] powerpc/pseries: extract host bridge from pci_bus prior to bus removal
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (153 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 154/240] MIPS: pci-legacy: stop using of_pci_range_to_resource Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 156/240] i2c: sh7760: fix IRQ error path Greg Kroah-Hartman
                   ` (89 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Tyrel Datwyler, Michael Ellerman,
	Sasha Levin

From: Tyrel Datwyler <tyreld@linux.ibm.com>

[ Upstream commit 38d0b1c9cec71e6d0f3bddef0bbce41d05a3e796 ]

The pci_bus->bridge reference may no longer be valid after
pci_bus_remove() resulting in passing a bad value to device_unregister()
for the associated bridge device.

Store the host_bridge reference in a separate variable prior to
pci_bus_remove().

Fixes: 7340056567e3 ("powerpc/pci: Reorder pci bus/bridge unregistration during PHB removal")
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210211182435.47968-1-tyreld@linux.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/powerpc/platforms/pseries/pci_dlpar.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/pseries/pci_dlpar.c b/arch/powerpc/platforms/pseries/pci_dlpar.c
index 547fd13e4f8e..35d035d68dce 100644
--- a/arch/powerpc/platforms/pseries/pci_dlpar.c
+++ b/arch/powerpc/platforms/pseries/pci_dlpar.c
@@ -66,6 +66,7 @@ EXPORT_SYMBOL_GPL(init_phb_dynamic);
 int remove_phb_dynamic(struct pci_controller *phb)
 {
 	struct pci_bus *b = phb->bus;
+	struct pci_host_bridge *host_bridge = to_pci_host_bridge(b->bridge);
 	struct resource *res;
 	int rc, i;
 
@@ -92,7 +93,8 @@ int remove_phb_dynamic(struct pci_controller *phb)
 	/* Remove the PCI bus and unregister the bridge device from sysfs */
 	phb->bus = NULL;
 	pci_remove_bus(b);
-	device_unregister(b->bridge);
+	host_bridge->bus = NULL;
+	device_unregister(&host_bridge->dev);
 
 	/* Now release the IO resource */
 	if (res->flags & IORESOURCE_IO)
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 156/240] i2c: sh7760: fix IRQ error path
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (154 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 155/240] powerpc/pseries: extract host bridge from pci_bus prior to bus removal Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 157/240] mwl8k: Fix a double Free in mwl8k_probe_hw Greg Kroah-Hartman
                   ` (88 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Sergey Shtylyov, Wolfram Sang, Sasha Levin

From: Sergey Shtylyov <s.shtylyov@omprussia.ru>

[ Upstream commit 92dfb27240fea2776f61c5422472cb6defca7767 ]

While adding the invalid IRQ check after calling platform_get_irq(),
I managed to overlook that the driver has a complex error path in its
probe() method, thus a simple *return* couldn't be used.  Use a proper
*goto* instead!

Fixes: e5b2e3e74201 ("i2c: sh7760: add IRQ check")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/i2c/busses/i2c-sh7760.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-sh7760.c b/drivers/i2c/busses/i2c-sh7760.c
index c79c9f542c5a..319d1fa617c8 100644
--- a/drivers/i2c/busses/i2c-sh7760.c
+++ b/drivers/i2c/busses/i2c-sh7760.c
@@ -473,7 +473,7 @@ static int sh7760_i2c_probe(struct platform_device *pdev)
 
 	ret = platform_get_irq(pdev, 0);
 	if (ret < 0)
-		return ret;
+		goto out3;
 	id->irq = ret;
 
 	id->adap.nr = pdev->id;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 157/240] mwl8k: Fix a double Free in mwl8k_probe_hw
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (155 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 156/240] i2c: sh7760: fix IRQ error path Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 158/240] vsock/vmci: log once the failed queue pair allocation Greg Kroah-Hartman
                   ` (87 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Lv Yunlong, Kalle Valo, Sasha Levin

From: Lv Yunlong <lyl2019@mail.ustc.edu.cn>

[ Upstream commit a8e083ee8e2a6c94c29733835adae8bf5b832748 ]

In mwl8k_probe_hw, hw->priv->txq is freed at the first time by
dma_free_coherent() in the call chain:
if(!priv->ap_fw)->mwl8k_init_txqs(hw)->mwl8k_txq_init(hw, i).

Then in err_free_queues of mwl8k_probe_hw, hw->priv->txq is freed
at the second time by mwl8k_txq_deinit(hw, i)->dma_free_coherent().

My patch set txq->txd to NULL after the first free to avoid the
double free.

Fixes: a66098daacee2 ("mwl8k: Marvell TOPDOG wireless driver")
Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210402182627.4256-1-lyl2019@mail.ustc.edu.cn
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/marvell/mwl8k.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/marvell/mwl8k.c b/drivers/net/wireless/marvell/mwl8k.c
index b1b400b59d86..66cd38d4f199 100644
--- a/drivers/net/wireless/marvell/mwl8k.c
+++ b/drivers/net/wireless/marvell/mwl8k.c
@@ -1459,6 +1459,7 @@ static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
 	txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
 	if (txq->skb == NULL) {
 		pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
+		txq->txd = NULL;
 		return -ENOMEM;
 	}
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 158/240] vsock/vmci: log once the failed queue pair allocation
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (156 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 157/240] mwl8k: Fix a double Free in mwl8k_probe_hw Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 159/240] RDMA/i40iw: Fix error unwinding when i40iw_hmc_sd_one fails Greg Kroah-Hartman
                   ` (86 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Stefano Garzarella, Jorgen Hansen,
	David S. Miller, Sasha Levin

From: Stefano Garzarella <sgarzare@redhat.com>

[ Upstream commit e16edc99d658cd41c60a44cc14d170697aa3271f ]

VMCI feature is not supported in conjunction with the vSphere Fault
Tolerance (FT) feature.

VMware Tools can repeatedly try to create a vsock connection. If FT is
enabled the kernel logs is flooded with the following messages:

    qp_alloc_hypercall result = -20
    Could not attach to queue pair with -20

"qp_alloc_hypercall result = -20" was hidden by commit e8266c4c3307
("VMCI: Stop log spew when qp allocation isn't possible"), but "Could
not attach to queue pair with -20" is still there flooding the log.

Since the error message can be useful in some cases, print it only once.

Fixes: d021c344051a ("VSOCK: Introduce VM Sockets")
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Jorgen Hansen <jhansen@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/vmw_vsock/vmci_transport.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/vmw_vsock/vmci_transport.c b/net/vmw_vsock/vmci_transport.c
index 102bf9194662..c09efcdf72d2 100644
--- a/net/vmw_vsock/vmci_transport.c
+++ b/net/vmw_vsock/vmci_transport.c
@@ -593,8 +593,7 @@ vmci_transport_queue_pair_alloc(struct vmci_qp **qpair,
 			       peer, flags, VMCI_NO_PRIVILEGE_FLAGS);
 out:
 	if (err < 0) {
-		pr_err("Could not attach to queue pair with %d\n",
-		       err);
+		pr_err_once("Could not attach to queue pair with %d\n", err);
 		err = vmci_transport_error_to_vsock_error(err);
 	}
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 159/240] RDMA/i40iw: Fix error unwinding when i40iw_hmc_sd_one fails
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (157 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 158/240] vsock/vmci: log once the failed queue pair allocation Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 160/240] net: davinci_emac: Fix incorrect masking of tx and rx error channel Greg Kroah-Hartman
                   ` (85 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Dan Carpenter, Sindhu Devale,
	Shiraz Saleem, Jason Gunthorpe, Sasha Levin

From: Sindhu Devale <sindhu.devale@intel.com>

[ Upstream commit 783a11bf2400e5d5c42a943c3083dc0330751842 ]

When i40iw_hmc_sd_one fails, chunk is freed without the deletion of chunk
entry in the PBLE info list.

Fix it by adding the chunk entry to the PBLE info list only after
successful addition of SD in i40iw_hmc_sd_one.

This fixes a static checker warning reported here:
  https://lore.kernel.org/linux-rdma/YHV4CFXzqTm23AOZ@mwanda/

Fixes: 9715830157be ("i40iw: add pble resource files")
Link: https://lore.kernel.org/r/20210416002104.323-1-shiraz.saleem@intel.com
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Sindhu Devale <sindhu.devale@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/infiniband/hw/i40iw/i40iw_pble.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/infiniband/hw/i40iw/i40iw_pble.c b/drivers/infiniband/hw/i40iw/i40iw_pble.c
index 85993dc44f6e..3fbf7a3b00de 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_pble.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_pble.c
@@ -399,12 +399,9 @@ static enum i40iw_status_code add_pble_pool(struct i40iw_sc_dev *dev,
 	i40iw_debug(dev, I40IW_DEBUG_PBLE, "next_fpm_addr = %llx chunk_size[%u] = 0x%x\n",
 		    pble_rsrc->next_fpm_addr, chunk->size, chunk->size);
 	pble_rsrc->unallocated_pble -= (chunk->size >> 3);
-	list_add(&chunk->list, &pble_rsrc->pinfo.clist);
 	sd_reg_val = (sd_entry_type == I40IW_SD_TYPE_PAGED) ?
 			sd_entry->u.pd_table.pd_page_addr.pa : sd_entry->u.bp.addr.pa;
-	if (sd_entry->valid)
-		return 0;
-	if (dev->is_pf) {
+	if (dev->is_pf && !sd_entry->valid) {
 		ret_code = i40iw_hmc_sd_one(dev, hmc_info->hmc_fn_id,
 					    sd_reg_val, idx->sd_idx,
 					    sd_entry->entry_type, true);
@@ -415,6 +412,7 @@ static enum i40iw_status_code add_pble_pool(struct i40iw_sc_dev *dev,
 	}
 
 	sd_entry->valid = true;
+	list_add(&chunk->list, &pble_rsrc->pinfo.clist);
 	return 0;
  error:
 	kfree(chunk);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 160/240] net: davinci_emac: Fix incorrect masking of tx and rx error channel
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (158 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 159/240] RDMA/i40iw: Fix error unwinding when i40iw_hmc_sd_one fails Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 161/240] ath9k: Fix error check in ath9k_hw_read_revisions() for PCI devices Greg Kroah-Hartman
                   ` (84 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Colin Ian King, David S. Miller, Sasha Levin

From: Colin Ian King <colin.king@canonical.com>

[ Upstream commit d83b8aa5207d81f9f6daec9888390f079cc5db3f ]

The bit-masks used for the TXERRCH and RXERRCH (tx and rx error channels)
are incorrect and always lead to a zero result. The mask values are
currently the incorrect post-right shifted values, fix this by setting
them to the currect values.

(I double checked these against the TMS320TCI6482 data sheet, section
5.30, page 127 to ensure I had the correct mask values for the TXERRCH
and RXERRCH fields in the MACSTATUS register).

Addresses-Coverity: ("Operands don't affect result")
Fixes: a6286ee630f6 ("net: Add TI DaVinci EMAC driver")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/ti/davinci_emac.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c
index 413cf14dbacd..8b7596fef42a 100644
--- a/drivers/net/ethernet/ti/davinci_emac.c
+++ b/drivers/net/ethernet/ti/davinci_emac.c
@@ -183,11 +183,11 @@ static const char emac_version_string[] = "TI DaVinci EMAC Linux v6.1";
 /* EMAC mac_status register */
 #define EMAC_MACSTATUS_TXERRCODE_MASK	(0xF00000)
 #define EMAC_MACSTATUS_TXERRCODE_SHIFT	(20)
-#define EMAC_MACSTATUS_TXERRCH_MASK	(0x7)
+#define EMAC_MACSTATUS_TXERRCH_MASK	(0x70000)
 #define EMAC_MACSTATUS_TXERRCH_SHIFT	(16)
 #define EMAC_MACSTATUS_RXERRCODE_MASK	(0xF000)
 #define EMAC_MACSTATUS_RXERRCODE_SHIFT	(12)
-#define EMAC_MACSTATUS_RXERRCH_MASK	(0x7)
+#define EMAC_MACSTATUS_RXERRCH_MASK	(0x700)
 #define EMAC_MACSTATUS_RXERRCH_SHIFT	(8)
 
 /* EMAC RX register masks */
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 161/240] ath9k: Fix error check in ath9k_hw_read_revisions() for PCI devices
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (159 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 160/240] net: davinci_emac: Fix incorrect masking of tx and rx error channel Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 162/240] powerpc/52xx: Fix an invalid ASM expression (addi used instead of add) Greg Kroah-Hartman
                   ` (83 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Toke Høiland-Jørgensen,
	Lorenzo Bianconi, Kalle Valo, Sasha Levin

From: Toke Høiland-Jørgensen <toke@redhat.com>

[ Upstream commit 7dd9a40fd6e0d0f1fd8e1931c007e080801dfdce ]

When the error check in ath9k_hw_read_revisions() was added, it checked for
-EIO which is what ath9k_regread() in the ath9k_htc driver uses. However,
for plain ath9k, the register read function uses ioread32(), which just
returns -1 on error. So if such a read fails, it still gets passed through
and ends up as a weird mac revision in the log output.

Fix this by changing ath9k_regread() to return -1 on error like ioread32()
does, and fix the error check to look for that instead of -EIO.

Fixes: 2f90c7e5d094 ("ath9k: Check for errors when reading SREV register")
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Reviewed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210326180819.142480-1-toke@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/ath/ath9k/htc_drv_init.c | 2 +-
 drivers/net/wireless/ath/ath9k/hw.c           | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_init.c b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
index 15a0036dcc6e..09d737f3461b 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_init.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
@@ -246,7 +246,7 @@ static unsigned int ath9k_regread(void *hw_priv, u32 reg_offset)
 	if (unlikely(r)) {
 		ath_dbg(common, WMI, "REGISTER READ FAILED: (0x%04x, %d)\n",
 			reg_offset, r);
-		return -EIO;
+		return -1;
 	}
 
 	return be32_to_cpu(val);
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index e7fca78cdd96..9d664398a41b 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -285,7 +285,7 @@ static bool ath9k_hw_read_revisions(struct ath_hw *ah)
 
 	srev = REG_READ(ah, AR_SREV);
 
-	if (srev == -EIO) {
+	if (srev == -1) {
 		ath_err(ath9k_hw_common(ah),
 			"Failed to read SREV register");
 		return false;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 162/240] powerpc/52xx: Fix an invalid ASM expression (addi used instead of add)
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (160 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 161/240] ath9k: Fix error check in ath9k_hw_read_revisions() for PCI devices Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 163/240] net:emac/emac-mac: Fix a use after free in emac_mac_tx_buf_send Greg Kroah-Hartman
                   ` (82 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Christophe Leroy, Michael Ellerman,
	Sasha Levin

From: Christophe Leroy <christophe.leroy@csgroup.eu>

[ Upstream commit 8a87a507714386efc39c3ae6fa24d4f79846b522 ]

  AS      arch/powerpc/platforms/52xx/lite5200_sleep.o
arch/powerpc/platforms/52xx/lite5200_sleep.S: Assembler messages:
arch/powerpc/platforms/52xx/lite5200_sleep.S:184: Warning: invalid register expression

In the following code, 'addi' is wrong, has to be 'add'

	/* local udelay in sram is needed */
  udelay: /* r11 - tb_ticks_per_usec, r12 - usecs, overwrites r13 */
	mullw	r12, r12, r11
	mftb	r13	/* start */
	addi	r12, r13, r12 /* end */

Fixes: ee983079ce04 ("[POWERPC] MPC5200 low power mode")
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/cb4cec9131c8577803367f1699209a7e104cec2a.1619025821.git.christophe.leroy@csgroup.eu
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/powerpc/platforms/52xx/lite5200_sleep.S | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/52xx/lite5200_sleep.S b/arch/powerpc/platforms/52xx/lite5200_sleep.S
index 08ab6fefcf7a..5f44e9223413 100644
--- a/arch/powerpc/platforms/52xx/lite5200_sleep.S
+++ b/arch/powerpc/platforms/52xx/lite5200_sleep.S
@@ -180,7 +180,7 @@ sram_code:
   udelay: /* r11 - tb_ticks_per_usec, r12 - usecs, overwrites r13 */
 	mullw	r12, r12, r11
 	mftb	r13	/* start */
-	addi	r12, r13, r12 /* end */
+	add	r12, r13, r12 /* end */
     1:
 	mftb	r13	/* current */
 	cmp	cr0, r13, r12
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 163/240] net:emac/emac-mac: Fix a use after free in emac_mac_tx_buf_send
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (161 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 162/240] powerpc/52xx: Fix an invalid ASM expression (addi used instead of add) Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 164/240] net:nfc:digital: Fix a double free in digital_tg_recv_dep_req Greg Kroah-Hartman
                   ` (81 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Lv Yunlong, David S. Miller, Sasha Levin

From: Lv Yunlong <lyl2019@mail.ustc.edu.cn>

[ Upstream commit 6d72e7c767acbbdd44ebc7d89c6690b405b32b57 ]

In emac_mac_tx_buf_send, it calls emac_tx_fill_tpd(..,skb,..).
If some error happens in emac_tx_fill_tpd(), the skb will be freed via
dev_kfree_skb(skb) in error branch of emac_tx_fill_tpd().
But the freed skb is still used via skb->len by netdev_sent_queue(,skb->len).

As i observed that emac_tx_fill_tpd() haven't modified the value of skb->len,
thus my patch assigns skb->len to 'len' before the possible free and
use 'len' instead of skb->len later.

Fixes: b9b17debc69d2 ("net: emac: emac gigabit ethernet controller driver")
Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/qualcomm/emac/emac-mac.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/qualcomm/emac/emac-mac.c b/drivers/net/ethernet/qualcomm/emac/emac-mac.c
index 9d223ff65071..882f2b7ec6d1 100644
--- a/drivers/net/ethernet/qualcomm/emac/emac-mac.c
+++ b/drivers/net/ethernet/qualcomm/emac/emac-mac.c
@@ -1504,6 +1504,7 @@ int emac_mac_tx_buf_send(struct emac_adapter *adpt, struct emac_tx_queue *tx_q,
 {
 	struct emac_tpd tpd;
 	u32 prod_idx;
+	int len;
 
 	memset(&tpd, 0, sizeof(tpd));
 
@@ -1523,9 +1524,10 @@ int emac_mac_tx_buf_send(struct emac_adapter *adpt, struct emac_tx_queue *tx_q,
 	if (skb_network_offset(skb) != ETH_HLEN)
 		TPD_TYP_SET(&tpd, 1);
 
+	len = skb->len;
 	emac_tx_fill_tpd(adpt, tx_q, skb, &tpd);
 
-	netdev_sent_queue(adpt->netdev, skb->len);
+	netdev_sent_queue(adpt->netdev, len);
 
 	/* Make sure the are enough free descriptors to hold one
 	 * maximum-sized SKB.  We need one desc for each fragment,
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 164/240] net:nfc:digital: Fix a double free in digital_tg_recv_dep_req
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (162 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 163/240] net:emac/emac-mac: Fix a use after free in emac_mac_tx_buf_send Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 165/240] kfifo: fix ternary sign extension bugs Greg Kroah-Hartman
                   ` (80 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Lv Yunlong, David S. Miller, Sasha Levin

From: Lv Yunlong <lyl2019@mail.ustc.edu.cn>

[ Upstream commit 75258586793efc521e5dd52a5bf6c7a4cf7002be ]

In digital_tg_recv_dep_req, it calls nfc_tm_data_received(..,resp).
If nfc_tm_data_received() failed, the callee will free the resp via
kfree_skb() and return error. But in the exit branch, the resp
will be freed again.

My patch sets resp to NULL if nfc_tm_data_received() failed, to
avoid the double free.

Fixes: 1c7a4c24fbfd9 ("NFC Digital: Add target NFC-DEP support")
Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/nfc/digital_dep.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/nfc/digital_dep.c b/net/nfc/digital_dep.c
index f864ce19e13d..582f97d035ef 100644
--- a/net/nfc/digital_dep.c
+++ b/net/nfc/digital_dep.c
@@ -1289,6 +1289,8 @@ static void digital_tg_recv_dep_req(struct nfc_digital_dev *ddev, void *arg,
 	}
 
 	rc = nfc_tm_data_received(ddev->nfc_dev, resp);
+	if (rc)
+		resp = NULL;
 
 exit:
 	kfree_skb(ddev->chaining_skb);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 165/240] kfifo: fix ternary sign extension bugs
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (163 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 164/240] net:nfc:digital: Fix a double free in digital_tg_recv_dep_req Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 166/240] Revert "net/sctp: fix race condition in sctp_destroy_sock" Greg Kroah-Hartman
                   ` (79 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Dan Carpenter, Stefani Seibold,
	Andrew Morton, Linus Torvalds, Sasha Levin

From: Dan Carpenter <dan.carpenter@oracle.com>

[ Upstream commit 926ee00ea24320052b46745ef4b00d91c05bd03d ]

The intent with this code was to return negative error codes but instead
it returns positives.

The problem is how type promotion works with ternary operations.  These
functions return long, "ret" is an int and "copied" is a u32.  The
negative error code is first cast to u32 so it becomes a high positive and
then cast to long where it's still a positive.

We could fix this by declaring "ret" as a ssize_t but let's just get rid
of the ternaries instead.

Link: https://lkml.kernel.org/r/YIE+/cK1tBzSuQPU@mwanda
Fixes: 5bf2b19320ec ("kfifo: add example files to the kernel sample directory")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Stefani Seibold <stefani@seibold.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 samples/kfifo/bytestream-example.c | 8 ++++++--
 samples/kfifo/inttype-example.c    | 8 ++++++--
 samples/kfifo/record-example.c     | 8 ++++++--
 3 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/samples/kfifo/bytestream-example.c b/samples/kfifo/bytestream-example.c
index 2fca916d9edf..a7f5ee8b6edc 100644
--- a/samples/kfifo/bytestream-example.c
+++ b/samples/kfifo/bytestream-example.c
@@ -124,8 +124,10 @@ static ssize_t fifo_write(struct file *file, const char __user *buf,
 	ret = kfifo_from_user(&test, buf, count, &copied);
 
 	mutex_unlock(&write_lock);
+	if (ret)
+		return ret;
 
-	return ret ? ret : copied;
+	return copied;
 }
 
 static ssize_t fifo_read(struct file *file, char __user *buf,
@@ -140,8 +142,10 @@ static ssize_t fifo_read(struct file *file, char __user *buf,
 	ret = kfifo_to_user(&test, buf, count, &copied);
 
 	mutex_unlock(&read_lock);
+	if (ret)
+		return ret;
 
-	return ret ? ret : copied;
+	return copied;
 }
 
 static const struct file_operations fifo_fops = {
diff --git a/samples/kfifo/inttype-example.c b/samples/kfifo/inttype-example.c
index 8dc3c2e7105a..a326a37e9163 100644
--- a/samples/kfifo/inttype-example.c
+++ b/samples/kfifo/inttype-example.c
@@ -117,8 +117,10 @@ static ssize_t fifo_write(struct file *file, const char __user *buf,
 	ret = kfifo_from_user(&test, buf, count, &copied);
 
 	mutex_unlock(&write_lock);
+	if (ret)
+		return ret;
 
-	return ret ? ret : copied;
+	return copied;
 }
 
 static ssize_t fifo_read(struct file *file, char __user *buf,
@@ -133,8 +135,10 @@ static ssize_t fifo_read(struct file *file, char __user *buf,
 	ret = kfifo_to_user(&test, buf, count, &copied);
 
 	mutex_unlock(&read_lock);
+	if (ret)
+		return ret;
 
-	return ret ? ret : copied;
+	return copied;
 }
 
 static const struct file_operations fifo_fops = {
diff --git a/samples/kfifo/record-example.c b/samples/kfifo/record-example.c
index 2d7529eeb294..deb87a2e4e6b 100644
--- a/samples/kfifo/record-example.c
+++ b/samples/kfifo/record-example.c
@@ -131,8 +131,10 @@ static ssize_t fifo_write(struct file *file, const char __user *buf,
 	ret = kfifo_from_user(&test, buf, count, &copied);
 
 	mutex_unlock(&write_lock);
+	if (ret)
+		return ret;
 
-	return ret ? ret : copied;
+	return copied;
 }
 
 static ssize_t fifo_read(struct file *file, char __user *buf,
@@ -147,8 +149,10 @@ static ssize_t fifo_read(struct file *file, char __user *buf,
 	ret = kfifo_to_user(&test, buf, count, &copied);
 
 	mutex_unlock(&read_lock);
+	if (ret)
+		return ret;
 
-	return ret ? ret : copied;
+	return copied;
 }
 
 static const struct file_operations fifo_fops = {
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 166/240] Revert "net/sctp: fix race condition in sctp_destroy_sock"
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (164 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 165/240] kfifo: fix ternary sign extension bugs Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 167/240] sctp: delay auto_asconf init until binding the first addr Greg Kroah-Hartman
                   ` (78 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, syzbot+959223586843e69a2674,
	Xin Long, David S. Miller

From: Xin Long <lucien.xin@gmail.com>

commit 01bfe5e8e428b475982a98a46cca5755726f3f7f upstream.

This reverts commit b166a20b07382b8bc1dcee2a448715c9c2c81b5b.

This one has to be reverted as it introduced a dead lock, as
syzbot reported:

       CPU0                    CPU1
       ----                    ----
  lock(&net->sctp.addr_wq_lock);
                               lock(slock-AF_INET6);
                               lock(&net->sctp.addr_wq_lock);
  lock(slock-AF_INET6);

CPU0 is the thread of sctp_addr_wq_timeout_handler(), and CPU1
is that of sctp_close().

The original issue this commit fixed will be fixed in the next
patch.

Reported-by: syzbot+959223586843e69a2674@syzkaller.appspotmail.com
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/sctp/socket.c |   13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -1582,9 +1582,11 @@ static void sctp_close(struct sock *sk,
 
 	/* Supposedly, no process has access to the socket, but
 	 * the net layers still may.
+	 * Also, sctp_destroy_sock() needs to be called with addr_wq_lock
+	 * held and that should be grabbed before socket lock.
 	 */
-	local_bh_disable();
-	bh_lock_sock(sk);
+	spin_lock_bh(&net->sctp.addr_wq_lock);
+	bh_lock_sock_nested(sk);
 
 	/* Hold the sock, since sk_common_release() will put sock_put()
 	 * and we have just a little more cleanup.
@@ -1593,7 +1595,7 @@ static void sctp_close(struct sock *sk,
 	sk_common_release(sk);
 
 	bh_unlock_sock(sk);
-	local_bh_enable();
+	spin_unlock_bh(&net->sctp.addr_wq_lock);
 
 	sock_put(sk);
 
@@ -4260,6 +4262,9 @@ static int sctp_init_sock(struct sock *s
 	sk_sockets_allocated_inc(sk);
 	sock_prot_inuse_add(net, sk->sk_prot, 1);
 
+	/* Nothing can fail after this block, otherwise
+	 * sctp_destroy_sock() will be called without addr_wq_lock held
+	 */
 	if (net->sctp.default_auto_asconf) {
 		spin_lock(&sock_net(sk)->sctp.addr_wq_lock);
 		list_add_tail(&sp->auto_asconf_list,
@@ -4294,9 +4299,7 @@ static void sctp_destroy_sock(struct soc
 
 	if (sp->do_auto_asconf) {
 		sp->do_auto_asconf = 0;
-		spin_lock_bh(&sock_net(sk)->sctp.addr_wq_lock);
 		list_del(&sp->auto_asconf_list);
-		spin_unlock_bh(&sock_net(sk)->sctp.addr_wq_lock);
 	}
 	sctp_endpoint_free(sp->ep);
 	local_bh_disable();



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 167/240] sctp: delay auto_asconf init until binding the first addr
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (165 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 166/240] Revert "net/sctp: fix race condition in sctp_destroy_sock" Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 168/240] Revert "of/fdt: Make sure no-map does not remove already reserved regions" Greg Kroah-Hartman
                   ` (77 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Or Cohen, Xin Long, David S. Miller

From: Xin Long <lucien.xin@gmail.com>

commit 34e5b01186858b36c4d7c87e1a025071e8e2401f upstream.

As Or Cohen described:

  If sctp_destroy_sock is called without sock_net(sk)->sctp.addr_wq_lock
  held and sp->do_auto_asconf is true, then an element is removed
  from the auto_asconf_splist without any proper locking.

  This can happen in the following functions:
  1. In sctp_accept, if sctp_sock_migrate fails.
  2. In inet_create or inet6_create, if there is a bpf program
     attached to BPF_CGROUP_INET_SOCK_CREATE which denies
     creation of the sctp socket.

This patch is to fix it by moving the auto_asconf init out of
sctp_init_sock(), by which inet_create()/inet6_create() won't
need to operate it in sctp_destroy_sock() when calling
sk_common_release().

It also makes more sense to do auto_asconf init while binding the
first addr, as auto_asconf actually requires an ANY addr bind,
see it in sctp_addr_wq_timeout_handler().

This addresses CVE-2021-23133.

Fixes: 610236587600 ("bpf: Add new cgroup attach type to enable sock modifications")
Reported-by: Or Cohen <orcohen@paloaltonetworks.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/sctp/socket.c |   31 +++++++++++++++++--------------
 1 file changed, 17 insertions(+), 14 deletions(-)

--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -367,6 +367,18 @@ static struct sctp_af *sctp_sockaddr_af(
 	return af;
 }
 
+static void sctp_auto_asconf_init(struct sctp_sock *sp)
+{
+	struct net *net = sock_net(&sp->inet.sk);
+
+	if (net->sctp.default_auto_asconf) {
+		spin_lock(&net->sctp.addr_wq_lock);
+		list_add_tail(&sp->auto_asconf_list, &net->sctp.auto_asconf_splist);
+		spin_unlock(&net->sctp.addr_wq_lock);
+		sp->do_auto_asconf = 1;
+	}
+}
+
 /* Bind a local address either to an endpoint or to an association.  */
 static int sctp_do_bind(struct sock *sk, union sctp_addr *addr, int len)
 {
@@ -429,8 +441,10 @@ static int sctp_do_bind(struct sock *sk,
 	}
 
 	/* Refresh ephemeral port.  */
-	if (!bp->port)
+	if (!bp->port) {
 		bp->port = inet_sk(sk)->inet_num;
+		sctp_auto_asconf_init(sp);
+	}
 
 	/* Add the address to the bind address list.
 	 * Use GFP_ATOMIC since BHs will be disabled.
@@ -4262,19 +4276,6 @@ static int sctp_init_sock(struct sock *s
 	sk_sockets_allocated_inc(sk);
 	sock_prot_inuse_add(net, sk->sk_prot, 1);
 
-	/* Nothing can fail after this block, otherwise
-	 * sctp_destroy_sock() will be called without addr_wq_lock held
-	 */
-	if (net->sctp.default_auto_asconf) {
-		spin_lock(&sock_net(sk)->sctp.addr_wq_lock);
-		list_add_tail(&sp->auto_asconf_list,
-		    &net->sctp.auto_asconf_splist);
-		sp->do_auto_asconf = 1;
-		spin_unlock(&sock_net(sk)->sctp.addr_wq_lock);
-	} else {
-		sp->do_auto_asconf = 0;
-	}
-
 	local_bh_enable();
 
 	return 0;
@@ -7817,6 +7818,8 @@ static void sctp_sock_migrate(struct soc
 	sctp_bind_addr_dup(&newsp->ep->base.bind_addr,
 				&oldsp->ep->base.bind_addr, GFP_KERNEL);
 
+	sctp_auto_asconf_init(newsp);
+
 	/* Move any messages in the old socket's receive queue that are for the
 	 * peeled off association to the new socket's receive queue.
 	 */



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 168/240] Revert "of/fdt: Make sure no-map does not remove already reserved regions"
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (166 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 167/240] sctp: delay auto_asconf init until binding the first addr Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 169/240] Revert "fdt: Properly handle "no-map" field in the memory region" Greg Kroah-Hartman
                   ` (76 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel, stable; +Cc: Greg Kroah-Hartman, Alexandre TORGUE, Quentin Perret

From: Quentin Perret <qperret@google.com>

This reverts commit 666ae7c255f9eb7a8fd8e55641542f3624a78b43.
It is not really a fix, and the backport misses dependencies, which
breaks existing platforms.

Reported-by: Alexandre TORGUE <alexandre.torgue@foss.st.com>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/of/fdt.c |   10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -1158,16 +1158,8 @@ void __init __weak early_init_dt_add_mem
 int __init __weak early_init_dt_reserve_memory_arch(phys_addr_t base,
 					phys_addr_t size, bool nomap)
 {
-	if (nomap) {
-		/*
-		 * If the memory is already reserved (by another region), we
-		 * should not allow it to be marked nomap.
-		 */
-		if (memblock_is_region_reserved(base, size))
-			return -EBUSY;
-
+	if (nomap)
 		return memblock_mark_nomap(base, size);
-	}
 	return memblock_reserve(base, size);
 }
 



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 169/240] Revert "fdt: Properly handle "no-map" field in the memory region"
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (167 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 168/240] Revert "of/fdt: Make sure no-map does not remove already reserved regions" Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 170/240] fs: dlm: fix debugfs dump Greg Kroah-Hartman
                   ` (75 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel, stable; +Cc: Greg Kroah-Hartman, Alexandre TORGUE, Quentin Perret

From: Quentin Perret <qperret@google.com>

This reverts commit 86ac82a7c708acf4738c396228be7b8fdaae4d99.
It is not really a fix, and the backport misses dependencies, which
breaks existing platforms.

Reported-by: Alexandre TORGUE <alexandre.torgue@foss.st.com>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/of/fdt.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -1159,7 +1159,7 @@ int __init __weak early_init_dt_reserve_
 					phys_addr_t size, bool nomap)
 {
 	if (nomap)
-		return memblock_mark_nomap(base, size);
+		return memblock_remove(base, size);
 	return memblock_reserve(base, size);
 }
 



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 170/240] fs: dlm: fix debugfs dump
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (168 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 169/240] Revert "fdt: Properly handle "no-map" field in the memory region" Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 171/240] tipc: convert dest nodes address to network order Greg Kroah-Hartman
                   ` (74 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Alexander Aring, David Teigland, Sasha Levin

From: Alexander Aring <aahringo@redhat.com>

[ Upstream commit 92c48950b43f4a767388cf87709d8687151a641f ]

This patch fixes the following message which randomly pops up during
glocktop call:

seq_file: buggy .next function table_seq_next did not update position index

The issue is that seq_read_iter() in fs/seq_file.c also needs an
increment of the index in an non next record case as well which this
patch fixes otherwise seq_read_iter() will print out the above message.

Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/dlm/debug_fs.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/dlm/debug_fs.c b/fs/dlm/debug_fs.c
index 466f7d60edc2..fabce23fdbac 100644
--- a/fs/dlm/debug_fs.c
+++ b/fs/dlm/debug_fs.c
@@ -545,6 +545,7 @@ static void *table_seq_next(struct seq_file *seq, void *iter_ptr, loff_t *pos)
 
 		if (bucket >= ls->ls_rsbtbl_size) {
 			kfree(ri);
+			++*pos;
 			return NULL;
 		}
 		tree = toss ? &ls->ls_rsbtbl[bucket].toss : &ls->ls_rsbtbl[bucket].keep;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 171/240] tipc: convert dest nodes address to network order
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (169 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 170/240] fs: dlm: fix debugfs dump Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 172/240] net: stmmac: Set FIFO sizes for ipq806x Greg Kroah-Hartman
                   ` (73 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Jon Maloy, Hoang Le, David S. Miller,
	Sasha Levin

From: Hoang Le <hoang.h.le@dektech.com.au>

[ Upstream commit 1980d37565061ab44bdc2f9e4da477d3b9752e81 ]

(struct tipc_link_info)->dest is in network order (__be32), so we must
convert the value to network order before assigning. The problem detected
by sparse:

net/tipc/netlink_compat.c:699:24: warning: incorrect type in assignment (different base types)
net/tipc/netlink_compat.c:699:24:    expected restricted __be32 [usertype] dest
net/tipc/netlink_compat.c:699:24:    got int

Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Hoang Le <hoang.h.le@dektech.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/tipc/netlink_compat.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/tipc/netlink_compat.c b/net/tipc/netlink_compat.c
index 403be9bfd8d1..69151de9657c 100644
--- a/net/tipc/netlink_compat.c
+++ b/net/tipc/netlink_compat.c
@@ -662,7 +662,7 @@ static int tipc_nl_compat_link_dump(struct tipc_nl_compat_msg *msg,
 	if (err)
 		return err;
 
-	link_info.dest = nla_get_flag(link[TIPC_NLA_LINK_DEST]);
+	link_info.dest = htonl(nla_get_flag(link[TIPC_NLA_LINK_DEST]));
 	link_info.up = htonl(nla_get_flag(link[TIPC_NLA_LINK_UP]));
 	nla_strlcpy(link_info.str, link[TIPC_NLA_LINK_NAME],
 		    TIPC_MAX_LINK_NAME);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 172/240] net: stmmac: Set FIFO sizes for ipq806x
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (170 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 171/240] tipc: convert dest nodes address to network order Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 173/240] ALSA: hdsp: dont disable if not enabled Greg Kroah-Hartman
                   ` (72 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Jonathan McDowell, David S. Miller,
	Sasha Levin

From: Jonathan McDowell <noodles@earth.li>

[ Upstream commit e127906b68b49ddb3ecba39ffa36a329c48197d3 ]

Commit eaf4fac47807 ("net: stmmac: Do not accept invalid MTU values")
started using the TX FIFO size to verify what counts as a valid MTU
request for the stmmac driver.  This is unset for the ipq806x variant.
Looking at older patches for this it seems the RX + TXs buffers can be
up to 8k, so set appropriately.

(I sent this as an RFC patch in June last year, but received no replies.
I've been running with this on my hardware (a MikroTik RB3011) since
then with larger MTUs to support both the internal qca8k switch and
VLANs with no problems. Without the patch it's impossible to set the
larger MTU required to support this.)

Signed-off-by: Jonathan McDowell <noodles@earth.li>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
index 1924788d28da..f4ff43a1b5ba 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
@@ -363,6 +363,8 @@ static int ipq806x_gmac_probe(struct platform_device *pdev)
 	plat_dat->bsp_priv = gmac;
 	plat_dat->fix_mac_speed = ipq806x_gmac_fix_mac_speed;
 	plat_dat->multicast_filter_bins = 0;
+	plat_dat->tx_fifo_size = 8192;
+	plat_dat->rx_fifo_size = 8192;
 
 	err = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
 	if (err)
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 173/240] ALSA: hdsp: dont disable if not enabled
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (171 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 172/240] net: stmmac: Set FIFO sizes for ipq806x Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 174/240] ALSA: hdspm: " Greg Kroah-Hartman
                   ` (71 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Takashi Iwai, Tong Zhang, Sasha Levin

From: Tong Zhang <ztong0001@gmail.com>

[ Upstream commit 507cdb9adba006a7798c358456426e1aea3d9c4f ]

hdsp wants to disable a not enabled pci device, which makes kernel
throw a warning. Make sure the device is enabled before calling disable.

[    1.758292] snd_hdsp 0000:00:03.0: disabling already-disabled device
[    1.758327] WARNING: CPU: 0 PID: 180 at drivers/pci/pci.c:2146 pci_disable_device+0x91/0xb0
[    1.766985] Call Trace:
[    1.767121]  snd_hdsp_card_free+0x94/0xf0 [snd_hdsp]
[    1.767388]  release_card_device+0x4b/0x80 [snd]
[    1.767639]  device_release+0x3b/0xa0
[    1.767838]  kobject_put+0x94/0x1b0
[    1.768027]  put_device+0x13/0x20
[    1.768207]  snd_card_free+0x61/0x90 [snd]
[    1.768430]  snd_hdsp_probe+0x524/0x5e0 [snd_hdsp]

Suggested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Tong Zhang <ztong0001@gmail.com>
Link: https://lore.kernel.org/r/20210321153840.378226-2-ztong0001@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/pci/rme9652/hdsp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/pci/rme9652/hdsp.c b/sound/pci/rme9652/hdsp.c
index b044dea3c815..9843954698f4 100644
--- a/sound/pci/rme9652/hdsp.c
+++ b/sound/pci/rme9652/hdsp.c
@@ -5314,7 +5314,8 @@ static int snd_hdsp_free(struct hdsp *hdsp)
 	if (hdsp->port)
 		pci_release_regions(hdsp->pci);
 
-	pci_disable_device(hdsp->pci);
+	if (pci_is_enabled(hdsp->pci))
+		pci_disable_device(hdsp->pci);
 	return 0;
 }
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 174/240] ALSA: hdspm: dont disable if not enabled
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (172 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 173/240] ALSA: hdsp: dont disable if not enabled Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 175/240] ALSA: rme9652: " Greg Kroah-Hartman
                   ` (70 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Takashi Iwai, Tong Zhang, Sasha Levin

From: Tong Zhang <ztong0001@gmail.com>

[ Upstream commit 790f5719b85e12e10c41753b864e74249585ed08 ]

hdspm wants to disable a not enabled pci device, which makes kernel
throw a warning. Make sure the device is enabled before calling disable.

[    1.786391] snd_hdspm 0000:00:03.0: disabling already-disabled device
[    1.786400] WARNING: CPU: 0 PID: 182 at drivers/pci/pci.c:2146 pci_disable_device+0x91/0xb0
[    1.795181] Call Trace:
[    1.795320]  snd_hdspm_card_free+0x58/0xa0 [snd_hdspm]
[    1.795595]  release_card_device+0x4b/0x80 [snd]
[    1.795860]  device_release+0x3b/0xa0
[    1.796072]  kobject_put+0x94/0x1b0
[    1.796260]  put_device+0x13/0x20
[    1.796438]  snd_card_free+0x61/0x90 [snd]
[    1.796659]  snd_hdspm_probe+0x97b/0x1440 [snd_hdspm]

Suggested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Tong Zhang <ztong0001@gmail.com>
Link: https://lore.kernel.org/r/20210321153840.378226-3-ztong0001@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/pci/rme9652/hdspm.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c
index 9899ef4c7efa..a88a81fc638a 100644
--- a/sound/pci/rme9652/hdspm.c
+++ b/sound/pci/rme9652/hdspm.c
@@ -6912,7 +6912,8 @@ static int snd_hdspm_free(struct hdspm * hdspm)
 	if (hdspm->port)
 		pci_release_regions(hdspm->pci);
 
-	pci_disable_device(hdspm->pci);
+	if (pci_is_enabled(hdspm->pci))
+		pci_disable_device(hdspm->pci);
 	return 0;
 }
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 175/240] ALSA: rme9652: dont disable if not enabled
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (173 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 174/240] ALSA: hdspm: " Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 176/240] Bluetooth: Set CONF_NOT_COMPLETE as l2cap_chan default Greg Kroah-Hartman
                   ` (69 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Takashi Iwai, Tong Zhang, Sasha Levin

From: Tong Zhang <ztong0001@gmail.com>

[ Upstream commit f57a741874bb6995089020e97a1dcdf9b165dcbe ]

rme9652 wants to disable a not enabled pci device, which makes kernel
throw a warning. Make sure the device is enabled before calling disable.

[    1.751595] snd_rme9652 0000:00:03.0: disabling already-disabled device
[    1.751605] WARNING: CPU: 0 PID: 174 at drivers/pci/pci.c:2146 pci_disable_device+0x91/0xb0
[    1.759968] Call Trace:
[    1.760145]  snd_rme9652_card_free+0x76/0xa0 [snd_rme9652]
[    1.760434]  release_card_device+0x4b/0x80 [snd]
[    1.760679]  device_release+0x3b/0xa0
[    1.760874]  kobject_put+0x94/0x1b0
[    1.761059]  put_device+0x13/0x20
[    1.761235]  snd_card_free+0x61/0x90 [snd]
[    1.761454]  snd_rme9652_probe+0x3be/0x700 [snd_rme9652]

Suggested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Tong Zhang <ztong0001@gmail.com>
Link: https://lore.kernel.org/r/20210321153840.378226-4-ztong0001@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/pci/rme9652/rme9652.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/pci/rme9652/rme9652.c b/sound/pci/rme9652/rme9652.c
index a76b1f147660..67bd75fbdc7e 100644
--- a/sound/pci/rme9652/rme9652.c
+++ b/sound/pci/rme9652/rme9652.c
@@ -1761,7 +1761,8 @@ static int snd_rme9652_free(struct snd_rme9652 *rme9652)
 	if (rme9652->port)
 		pci_release_regions(rme9652->pci);
 
-	pci_disable_device(rme9652->pci);
+	if (pci_is_enabled(rme9652->pci))
+		pci_disable_device(rme9652->pci);
 	return 0;
 }
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 176/240] Bluetooth: Set CONF_NOT_COMPLETE as l2cap_chan default
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (174 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 175/240] ALSA: rme9652: " Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 177/240] Bluetooth: initialize skb_queue_head at l2cap_chan_create() Greg Kroah-Hartman
                   ` (68 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Archie Pusaka,
	syzbot+338f014a98367a08a114, Alain Michaud,
	Abhishek Pandit-Subedi, Guenter Roeck, Marcel Holtmann,
	Sasha Levin

From: Archie Pusaka <apusaka@chromium.org>

[ Upstream commit 3a9d54b1947ecea8eea9a902c0b7eb58a98add8a ]

Currently l2cap_chan_set_defaults() reset chan->conf_state to zero.
However, there is a flag CONF_NOT_COMPLETE which is set when
creating the l2cap_chan. It is suggested that the flag should be
cleared when l2cap_chan is ready, but when l2cap_chan_set_defaults()
is called, l2cap_chan is not yet ready. Therefore, we must set this
flag as the default.

Example crash call trace:
__dump_stack lib/dump_stack.c:15 [inline]
dump_stack+0xc4/0x118 lib/dump_stack.c:56
panic+0x1c6/0x38b kernel/panic.c:117
__warn+0x170/0x1b9 kernel/panic.c:471
warn_slowpath_fmt+0xc7/0xf8 kernel/panic.c:494
debug_print_object+0x175/0x193 lib/debugobjects.c:260
debug_object_assert_init+0x171/0x1bf lib/debugobjects.c:614
debug_timer_assert_init kernel/time/timer.c:629 [inline]
debug_assert_init kernel/time/timer.c:677 [inline]
del_timer+0x7c/0x179 kernel/time/timer.c:1034
try_to_grab_pending+0x81/0x2e5 kernel/workqueue.c:1230
cancel_delayed_work+0x7c/0x1c4 kernel/workqueue.c:2929
l2cap_clear_timer+0x1e/0x41 include/net/bluetooth/l2cap.h:834
l2cap_chan_del+0x2d8/0x37e net/bluetooth/l2cap_core.c:640
l2cap_chan_close+0x532/0x5d8 net/bluetooth/l2cap_core.c:756
l2cap_sock_shutdown+0x806/0x969 net/bluetooth/l2cap_sock.c:1174
l2cap_sock_release+0x64/0x14d net/bluetooth/l2cap_sock.c:1217
__sock_release+0xda/0x217 net/socket.c:580
sock_close+0x1b/0x1f net/socket.c:1039
__fput+0x322/0x55c fs/file_table.c:208
____fput+0x17/0x19 fs/file_table.c:244
task_work_run+0x19b/0x1d3 kernel/task_work.c:115
exit_task_work include/linux/task_work.h:21 [inline]
do_exit+0xe4c/0x204a kernel/exit.c:766
do_group_exit+0x291/0x291 kernel/exit.c:891
get_signal+0x749/0x1093 kernel/signal.c:2396
do_signal+0xa5/0xcdb arch/x86/kernel/signal.c:737
exit_to_usermode_loop arch/x86/entry/common.c:243 [inline]
prepare_exit_to_usermode+0xed/0x235 arch/x86/entry/common.c:277
syscall_return_slowpath+0x3a7/0x3b3 arch/x86/entry/common.c:348
int_ret_from_sys_call+0x25/0xa3

Signed-off-by: Archie Pusaka <apusaka@chromium.org>
Reported-by: syzbot+338f014a98367a08a114@syzkaller.appspotmail.com
Reviewed-by: Alain Michaud <alainm@chromium.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/bluetooth/l2cap_core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index b96818cda12d..d586caaa3af4 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -510,7 +510,9 @@ void l2cap_chan_set_defaults(struct l2cap_chan *chan)
 	chan->flush_to = L2CAP_DEFAULT_FLUSH_TO;
 	chan->retrans_timeout = L2CAP_DEFAULT_RETRANS_TO;
 	chan->monitor_timeout = L2CAP_DEFAULT_MONITOR_TO;
+
 	chan->conf_state = 0;
+	set_bit(CONF_NOT_COMPLETE, &chan->conf_state);
 
 	set_bit(FLAG_FORCE_ACTIVE, &chan->flags);
 }
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 177/240] Bluetooth: initialize skb_queue_head at l2cap_chan_create()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (175 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 176/240] Bluetooth: Set CONF_NOT_COMPLETE as l2cap_chan default Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 178/240] ip6_vti: proper dev_{hold|put} in ndo_[un]init methods Greg Kroah-Hartman
                   ` (67 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Tetsuo Handa, Marcel Holtmann,
	Sasha Levin, syzbot

From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>

[ Upstream commit be8597239379f0f53c9710dd6ab551bbf535bec6 ]

syzbot is hitting "INFO: trying to register non-static key." message [1],
for "struct l2cap_chan"->tx_q.lock spinlock is not yet initialized when
l2cap_chan_del() is called due to e.g. timeout.

Since "struct l2cap_chan"->lock mutex is initialized at l2cap_chan_create()
immediately after "struct l2cap_chan" is allocated using kzalloc(), let's
as well initialize "struct l2cap_chan"->{tx_q,srej_q}.lock spinlocks there.

[1] https://syzkaller.appspot.com/bug?extid=fadfba6a911f6bf71842

Reported-and-tested-by: syzbot <syzbot+fadfba6a911f6bf71842@syzkaller.appspotmail.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/bluetooth/l2cap_core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index d586caaa3af4..204b6ebd2a24 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -445,6 +445,8 @@ struct l2cap_chan *l2cap_chan_create(void)
 	if (!chan)
 		return NULL;
 
+	skb_queue_head_init(&chan->tx_q);
+	skb_queue_head_init(&chan->srej_q);
 	mutex_init(&chan->lock);
 
 	/* Set default lock nesting level */
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 178/240] ip6_vti: proper dev_{hold|put} in ndo_[un]init methods
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (176 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 177/240] Bluetooth: initialize skb_queue_head at l2cap_chan_create() Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 179/240] mac80211: clear the beacons CRC after channel switch Greg Kroah-Hartman
                   ` (66 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Eric Dumazet, David S. Miller, Sasha Levin

From: Eric Dumazet <edumazet@google.com>

[ Upstream commit 40cb881b5aaa0b69a7d93dec8440d5c62dae299f ]

After adopting CONFIG_PCPU_DEV_REFCNT=n option, syzbot was able to trigger
a warning [1]

Issue here is that:

- all dev_put() should be paired with a corresponding prior dev_hold().

- A driver doing a dev_put() in its ndo_uninit() MUST also
  do a dev_hold() in its ndo_init(), only when ndo_init()
  is returning 0.

Otherwise, register_netdevice() would call ndo_uninit()
in its error path and release a refcount too soon.

Therefore, we need to move dev_hold() call from
vti6_tnl_create2() to vti6_dev_init_gen()

[1]
WARNING: CPU: 0 PID: 15951 at lib/refcount.c:31 refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31
Modules linked in:
CPU: 0 PID: 15951 Comm: syz-executor.3 Not tainted 5.12.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31
Code: 1d 6a 5a e8 09 31 ff 89 de e8 8d 1a ab fd 84 db 75 e0 e8 d4 13 ab fd 48 c7 c7 a0 e1 c1 89 c6 05 4a 5a e8 09 01 e8 2e 36 fb 04 <0f> 0b eb c4 e8 b8 13 ab fd 0f b6 1d 39 5a e8 09 31 ff 89 de e8 58
RSP: 0018:ffffc90001eaef28 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff815c51f5 RDI: fffff520003d5dd7
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815bdf8e R11: 0000000000000000 R12: ffff88801bb1c568
R13: ffff88801f69e800 R14: 00000000ffffffff R15: ffff888050889d40
FS:  00007fc79314e700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1c1ff47108 CR3: 0000000020fd5000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __refcount_dec include/linux/refcount.h:344 [inline]
 refcount_dec include/linux/refcount.h:359 [inline]
 dev_put include/linux/netdevice.h:4135 [inline]
 vti6_dev_uninit+0x31a/0x360 net/ipv6/ip6_vti.c:297
 register_netdevice+0xadf/0x1500 net/core/dev.c:10308
 vti6_tnl_create2+0x1b5/0x400 net/ipv6/ip6_vti.c:190
 vti6_newlink+0x9d/0xd0 net/ipv6/ip6_vti.c:1020
 __rtnl_newlink+0x1062/0x1710 net/core/rtnetlink.c:3443
 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3491
 rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5553
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2502
 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338
 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:674
 ____sys_sendmsg+0x331/0x810 net/socket.c:2350
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404
 __sys_sendmmsg+0x195/0x470 net/socket.c:2490
 __do_sys_sendmmsg net/socket.c:2519 [inline]
 __se_sys_sendmmsg net/socket.c:2516 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2516

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/ipv6/ip6_vti.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
index b9f5155a77ef..d20ea696ecaa 100644
--- a/net/ipv6/ip6_vti.c
+++ b/net/ipv6/ip6_vti.c
@@ -196,7 +196,6 @@ static int vti6_tnl_create2(struct net_device *dev)
 
 	strcpy(t->parms.name, dev->name);
 
-	dev_hold(dev);
 	vti6_tnl_link(ip6n, t);
 
 	return 0;
@@ -914,6 +913,7 @@ static inline int vti6_dev_init_gen(struct net_device *dev)
 	dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
 	if (!dev->tstats)
 		return -ENOMEM;
+	dev_hold(dev);
 	return 0;
 }
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 179/240] mac80211: clear the beacons CRC after channel switch
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (177 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 178/240] ip6_vti: proper dev_{hold|put} in ndo_[un]init methods Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 180/240] cuse: prevent clone Greg Kroah-Hartman
                   ` (65 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Emmanuel Grumbach, Johannes Berg,
	Sasha Levin

From: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

[ Upstream commit d6843d1ee283137723b4a8c76244607ce6db1951 ]

After channel switch, we should consider any beacon with a
CSA IE as a new switch. If the CSA IE is a leftover from
before the switch that the AP forgot to remove, we'll get
a CSA-to-Self.

This caused issues in iwlwifi where the firmware saw a beacon
with a CSA-to-Self with mode = 1 on the new channel after a
switch. The firmware considered this a new switch and closed
its queues. Since the beacon didn't change between before and
after the switch, we wouldn't handle it (the CRC is the same)
and we wouldn't let the firmware open its queues again or
disconnect if the CSA IE stays for too long.

Clear the CRC valid state after we switch to make sure that
we handle the beacon and handle the CSA IE as required.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Link: https://lore.kernel.org/r/20210408143124.b9e68aa98304.I465afb55ca2c7d59f7bf610c6046a1fd732b4c28@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/mac80211/mlme.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 58b80270e58c..3217c98f2b5a 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1101,6 +1101,11 @@ static void ieee80211_chswitch_post_beacon(struct ieee80211_sub_if_data *sdata)
 
 	sdata->vif.csa_active = false;
 	ifmgd->csa_waiting_bcn = false;
+	/*
+	 * If the CSA IE is still present on the beacon after the switch,
+	 * we need to consider it as a new CSA (possibly to self).
+	 */
+	ifmgd->beacon_crc_valid = false;
 
 	ret = drv_post_channel_switch(sdata);
 	if (ret) {
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 180/240] cuse: prevent clone
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (178 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 179/240] mac80211: clear the beacons CRC after channel switch Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 181/240] selftests: Set CC to clang in lib.mk if LLVM is set Greg Kroah-Hartman
                   ` (64 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Miklos Szeredi, Sasha Levin

From: Miklos Szeredi <mszeredi@redhat.com>

[ Upstream commit 8217673d07256b22881127bf50dce874d0e51653 ]

For cloned connections cuse_channel_release() will be called more than
once, resulting in use after free.

Prevent device cloning for CUSE, which does not make sense at this point,
and highly unlikely to be used in real life.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/fuse/cuse.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/fuse/cuse.c b/fs/fuse/cuse.c
index d9aba9700726..b83367300f48 100644
--- a/fs/fuse/cuse.c
+++ b/fs/fuse/cuse.c
@@ -616,6 +616,8 @@ static int __init cuse_init(void)
 	cuse_channel_fops.owner		= THIS_MODULE;
 	cuse_channel_fops.open		= cuse_channel_open;
 	cuse_channel_fops.release	= cuse_channel_release;
+	/* CUSE is not prepared for FUSE_DEV_IOC_CLONE */
+	cuse_channel_fops.unlocked_ioctl	= NULL;
 
 	cuse_class = class_create(THIS_MODULE, "cuse");
 	if (IS_ERR(cuse_class))
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 181/240] selftests: Set CC to clang in lib.mk if LLVM is set
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (179 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 180/240] cuse: prevent clone Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 182/240] kconfig: nconf: stop endless search loops Greg Kroah-Hartman
                   ` (63 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Yonghong Song, Alexei Starovoitov,
	Andrii Nakryiko, Sasha Levin

From: Yonghong Song <yhs@fb.com>

[ Upstream commit 26e6dd1072763cd5696b75994c03982dde952ad9 ]

selftests/bpf/Makefile includes lib.mk. With the following command
  make -j60 LLVM=1 LLVM_IAS=1  <=== compile kernel
  make -j60 -C tools/testing/selftests/bpf LLVM=1 LLVM_IAS=1 V=1
some files are still compiled with gcc. This patch
fixed lib.mk issue which sets CC to gcc in all cases.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210413153413.3027426-1-yhs@fb.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 tools/testing/selftests/lib.mk | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk
index 50a93f5f13d6..d8fa6c72b7ca 100644
--- a/tools/testing/selftests/lib.mk
+++ b/tools/testing/selftests/lib.mk
@@ -1,6 +1,10 @@
 # This mimics the top-level Makefile. We do it explicitly here so that this
 # Makefile can operate with or without the kbuild infrastructure.
+ifneq ($(LLVM),)
+CC := clang
+else
 CC := $(CROSS_COMPILE)gcc
+endif
 
 define RUN_TESTS
 	@for TEST in $(TEST_PROGS); do \
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 182/240] kconfig: nconf: stop endless search loops
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (180 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 181/240] selftests: Set CC to clang in lib.mk if LLVM is set Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 183/240] sctp: Fix out-of-bounds warning in sctp_process_asconf_param() Greg Kroah-Hartman
                   ` (62 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Mihai Moldovan, Masahiro Yamada, Sasha Levin

From: Mihai Moldovan <ionic@ionic.de>

[ Upstream commit 8c94b430b9f6213dec84e309bb480a71778c4213 ]

If the user selects the very first entry in a page and performs a
search-up operation, or selects the very last entry in a page and
performs a search-down operation that will not succeed (e.g., via
[/]asdfzzz[Up Arrow]), nconf will never terminate searching the page.

The reason is that in this case, the starting point will be set to -1
or n, which is then translated into (n - 1) (i.e., the last entry of
the page) or 0 (i.e., the first entry of the page) and finally the
search begins. This continues to work fine until the index reaches 0 or
(n - 1), at which point it will be decremented to -1 or incremented to
n, but not checked against the starting point right away. Instead, it's
wrapped around to the bottom or top again, after which the starting
point check occurs... and naturally fails.

My original implementation added another check for -1 before wrapping
the running index variable around, but Masahiro Yamada pointed out that
the actual issue is that the comparison point (starting point) exceeds
bounds (i.e., the [0,n-1] interval) in the first place and that,
instead, the starting point should be fixed.

This has the welcome side-effect of also fixing the case where the
starting point was n while searching down, which also lead to an
infinite loop.

OTOH, this code is now essentially all his work.

Amazingly, nobody seems to have been hit by this for 11 years - or at
the very least nobody bothered to debug and fix this.

Signed-off-by: Mihai Moldovan <ionic@ionic.de>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 scripts/kconfig/nconf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/kconfig/nconf.c b/scripts/kconfig/nconf.c
index f7049e288e93..c58a46904861 100644
--- a/scripts/kconfig/nconf.c
+++ b/scripts/kconfig/nconf.c
@@ -502,8 +502,8 @@ static int get_mext_match(const char *match_str, match_f flag)
 	else if (flag == FIND_NEXT_MATCH_UP)
 		--match_start;
 
+	match_start = (match_start + items_num) % items_num;
 	index = match_start;
-	index = (index + items_num) % items_num;
 	while (true) {
 		char *str = k_menu_items[index].str;
 		if (strcasestr(str, match_str) != 0)
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 183/240] sctp: Fix out-of-bounds warning in sctp_process_asconf_param()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (181 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 182/240] kconfig: nconf: stop endless search loops Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 184/240] ASoC: rt286: Generalize support for ALC3263 codec Greg Kroah-Hartman
                   ` (61 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, kernel test robot,
	Gustavo A. R. Silva, Kees Cook, Marcelo Ricardo Leitner,
	David S. Miller, Sasha Levin

From: Gustavo A. R. Silva <gustavoars@kernel.org>

[ Upstream commit e5272ad4aab347dde5610c0aedb786219e3ff793 ]

Fix the following out-of-bounds warning:

net/sctp/sm_make_chunk.c:3150:4: warning: 'memcpy' offset [17, 28] from the object at 'addr' is out of the bounds of referenced subobject 'v4' with type 'struct sockaddr_in' at offset 0 [-Warray-bounds]

This helps with the ongoing efforts to globally enable -Warray-bounds
and get us closer to being able to tighten the FORTIFY_SOURCE routines
on memcpy().

Link: https://github.com/KSPP/linux/issues/109
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/sctp/sm_make_chunk.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index acb0c2631c79..0c5aff3bb539 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -3129,7 +3129,7 @@ static __be16 sctp_process_asconf_param(struct sctp_association *asoc,
 		 * primary.
 		 */
 		if (af->is_any(&addr))
-			memcpy(&addr.v4, sctp_source(asconf), sizeof(addr));
+			memcpy(&addr, sctp_source(asconf), sizeof(addr));
 
 		peer = sctp_assoc_lookup_paddr(asoc, &addr);
 		if (!peer)
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 184/240] ASoC: rt286: Generalize support for ALC3263 codec
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (182 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 183/240] sctp: Fix out-of-bounds warning in sctp_process_asconf_param() Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 185/240] samples/bpf: Fix broken tracex1 due to kprobe argument change Greg Kroah-Hartman
                   ` (60 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, David Ward, Pierre-Louis Bossart,
	Mark Brown, Sasha Levin

From: David Ward <david.ward@gatech.edu>

[ Upstream commit aa2f9c12821e6a4ba1df4fb34a3dbc6a2a1ee7fe ]

The ALC3263 codec on the XPS 13 9343 is also found on the Latitude 13 7350
and Venue 11 Pro 7140. They require the same handling for the combo jack to
work with a headset: GPIO pin 6 must be set.

The HDA driver always sets this pin on the ALC3263, which it distinguishes
by the codec vendor/device ID 0x10ec0288 and PCI subsystem vendor ID 0x1028
(Dell). The ASoC driver does not use PCI, so adapt this check to use DMI to
determine if Dell is the system vendor.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=150601
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=205961
Signed-off-by: David Ward <david.ward@gatech.edu>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210418134658.4333-6-david.ward@gatech.edu
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/codecs/rt286.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/sound/soc/codecs/rt286.c b/sound/soc/codecs/rt286.c
index 7899a2cdeb42..4a0ab620983d 100644
--- a/sound/soc/codecs/rt286.c
+++ b/sound/soc/codecs/rt286.c
@@ -1119,12 +1119,11 @@ static const struct dmi_system_id force_combo_jack_table[] = {
 	{ }
 };
 
-static const struct dmi_system_id dmi_dell_dino[] = {
+static const struct dmi_system_id dmi_dell[] = {
 	{
-		.ident = "Dell Dino",
+		.ident = "Dell",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
-			DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9343")
 		}
 	},
 	{ }
@@ -1135,7 +1134,7 @@ static int rt286_i2c_probe(struct i2c_client *i2c,
 {
 	struct rt286_platform_data *pdata = dev_get_platdata(&i2c->dev);
 	struct rt286_priv *rt286;
-	int i, ret, val;
+	int i, ret, vendor_id;
 
 	rt286 = devm_kzalloc(&i2c->dev,	sizeof(*rt286),
 				GFP_KERNEL);
@@ -1151,14 +1150,15 @@ static int rt286_i2c_probe(struct i2c_client *i2c,
 	}
 
 	ret = regmap_read(rt286->regmap,
-		RT286_GET_PARAM(AC_NODE_ROOT, AC_PAR_VENDOR_ID), &val);
+		RT286_GET_PARAM(AC_NODE_ROOT, AC_PAR_VENDOR_ID), &vendor_id);
 	if (ret != 0) {
 		dev_err(&i2c->dev, "I2C error %d\n", ret);
 		return ret;
 	}
-	if (val != RT286_VENDOR_ID && val != RT288_VENDOR_ID) {
+	if (vendor_id != RT286_VENDOR_ID && vendor_id != RT288_VENDOR_ID) {
 		dev_err(&i2c->dev,
-			"Device with ID register %#x is not rt286\n", val);
+			"Device with ID register %#x is not rt286\n",
+			vendor_id);
 		return -ENODEV;
 	}
 
@@ -1182,8 +1182,8 @@ static int rt286_i2c_probe(struct i2c_client *i2c,
 	if (pdata)
 		rt286->pdata = *pdata;
 
-	if (dmi_check_system(force_combo_jack_table) ||
-		dmi_check_system(dmi_dell_dino))
+	if ((vendor_id == RT288_VENDOR_ID && dmi_check_system(dmi_dell)) ||
+		dmi_check_system(force_combo_jack_table))
 		rt286->pdata.cbj_en = true;
 
 	regmap_write(rt286->regmap, RT286_SET_AUDIO_POWER, AC_PWRST_D3);
@@ -1222,7 +1222,7 @@ static int rt286_i2c_probe(struct i2c_client *i2c,
 	regmap_update_bits(rt286->regmap, RT286_DEPOP_CTRL3, 0xf777, 0x4737);
 	regmap_update_bits(rt286->regmap, RT286_DEPOP_CTRL4, 0x00ff, 0x003f);
 
-	if (dmi_check_system(dmi_dell_dino)) {
+	if (vendor_id == RT288_VENDOR_ID && dmi_check_system(dmi_dell)) {
 		regmap_update_bits(rt286->regmap,
 			RT286_SET_GPIO_MASK, 0x40, 0x40);
 		regmap_update_bits(rt286->regmap,
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 185/240] samples/bpf: Fix broken tracex1 due to kprobe argument change
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (183 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 184/240] ASoC: rt286: Generalize support for ALC3263 codec Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 186/240] powerpc/pseries: Stop calling printk in rtas_stop_self() Greg Kroah-Hartman
                   ` (59 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Yaqi Chen, Alexei Starovoitov,
	Yonghong Song, Sasha Levin

From: Yaqi Chen <chendotjs@gmail.com>

[ Upstream commit 137733d08f4ab14a354dacaa9a8fc35217747605 ]

>From commit c0bbbdc32feb ("__netif_receive_skb_core: pass skb by
reference"), the first argument passed into __netif_receive_skb_core
has changed to reference of a skb pointer.

This commit fixes by using bpf_probe_read_kernel.

Signed-off-by: Yaqi Chen <chendotjs@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20210416154803.37157-1-chendotjs@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 samples/bpf/tracex1_kern.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/samples/bpf/tracex1_kern.c b/samples/bpf/tracex1_kern.c
index 107da148820f..9c74b45c5720 100644
--- a/samples/bpf/tracex1_kern.c
+++ b/samples/bpf/tracex1_kern.c
@@ -20,7 +20,7 @@
 SEC("kprobe/__netif_receive_skb_core")
 int bpf_prog1(struct pt_regs *ctx)
 {
-	/* attaches to kprobe netif_receive_skb,
+	/* attaches to kprobe __netif_receive_skb_core,
 	 * looks for packets on loobpack device and prints them
 	 */
 	char devname[IFNAMSIZ];
@@ -29,7 +29,7 @@ int bpf_prog1(struct pt_regs *ctx)
 	int len;
 
 	/* non-portable! works for the given kernel only */
-	skb = (struct sk_buff *) PT_REGS_PARM1(ctx);
+	bpf_probe_read_kernel(&skb, sizeof(skb), (void *)PT_REGS_PARM1(ctx));
 	dev = _(skb->dev);
 	len = _(skb->len);
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 186/240] powerpc/pseries: Stop calling printk in rtas_stop_self()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (184 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 185/240] samples/bpf: Fix broken tracex1 due to kprobe argument change Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:22 ` [PATCH 4.9 187/240] wl3501_cs: Fix out-of-bounds warnings in wl3501_send_pkt Greg Kroah-Hartman
                   ` (58 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Michael Ellerman, Sasha Levin

From: Michael Ellerman <mpe@ellerman.id.au>

[ Upstream commit ed8029d7b472369a010a1901358567ca3b6dbb0d ]

RCU complains about us calling printk() from an offline CPU:

  =============================
  WARNING: suspicious RCU usage
  5.12.0-rc7-02874-g7cf90e481cb8 #1 Not tainted
  -----------------------------
  kernel/locking/lockdep.c:3568 RCU-list traversed in non-reader section!!

  other info that might help us debug this:

  RCU used illegally from offline CPU!
  rcu_scheduler_active = 2, debug_locks = 1
  no locks held by swapper/0/0.

  stack backtrace:
  CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.12.0-rc7-02874-g7cf90e481cb8 #1
  Call Trace:
    dump_stack+0xec/0x144 (unreliable)
    lockdep_rcu_suspicious+0x124/0x144
    __lock_acquire+0x1098/0x28b0
    lock_acquire+0x128/0x600
    _raw_spin_lock_irqsave+0x6c/0xc0
    down_trylock+0x2c/0x70
    __down_trylock_console_sem+0x60/0x140
    vprintk_emit+0x1a8/0x4b0
    vprintk_func+0xcc/0x200
    printk+0x40/0x54
    pseries_cpu_offline_self+0xc0/0x120
    arch_cpu_idle_dead+0x54/0x70
    do_idle+0x174/0x4a0
    cpu_startup_entry+0x38/0x40
    rest_init+0x268/0x388
    start_kernel+0x748/0x790
    start_here_common+0x1c/0x614

Which happens because by the time we get to rtas_stop_self() we are
already offline. In addition the message can be spammy, and is not that
helpful for users, so remove it.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210418135413.1204031-1-mpe@ellerman.id.au
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/powerpc/platforms/pseries/hotplug-cpu.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c
index 7a2beedb9740..a7d9dd029850 100644
--- a/arch/powerpc/platforms/pseries/hotplug-cpu.c
+++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c
@@ -92,9 +92,6 @@ static void rtas_stop_self(void)
 
 	BUG_ON(rtas_stop_self_token == RTAS_UNKNOWN_SERVICE);
 
-	printk("cpu %u (hwid %u) Ready to die...\n",
-	       smp_processor_id(), hard_smp_processor_id());
-
 	rtas_call_unlocked(&args, rtas_stop_self_token, 0, 1, NULL);
 
 	panic("Alas, I survived.\n");
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 187/240] wl3501_cs: Fix out-of-bounds warnings in wl3501_send_pkt
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (185 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 186/240] powerpc/pseries: Stop calling printk in rtas_stop_self() Greg Kroah-Hartman
@ 2021-05-20  9:22 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 188/240] wl3501_cs: Fix out-of-bounds warnings in wl3501_mgmt_join Greg Kroah-Hartman
                   ` (57 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:22 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, kernel test robot, Kees Cook,
	Gustavo A. R. Silva, Kalle Valo, Sasha Levin

From: Gustavo A. R. Silva <gustavoars@kernel.org>

[ Upstream commit 820aa37638a252b57967bdf4038a514b1ab85d45 ]

Fix the following out-of-bounds warnings by enclosing structure members
daddr and saddr into new struct addr, in structures wl3501_md_req and
wl3501_md_ind:

arch/x86/include/asm/string_32.h:182:25: warning: '__builtin_memcpy' offset [18, 23] from the object at 'sig' is out of the bounds of referenced subobject 'daddr' with type 'u8[6]' {aka 'unsigned char[6]'} at offset 11 [-Warray-bounds]
arch/x86/include/asm/string_32.h:182:25: warning: '__builtin_memcpy' offset [18, 23] from the object at 'sig' is out of the bounds of referenced subobject 'daddr' with type 'u8[6]' {aka 'unsigned char[6]'} at offset 11 [-Warray-bounds]

Refactor the code, accordingly:

$ pahole -C wl3501_md_req drivers/net/wireless/wl3501_cs.o
struct wl3501_md_req {
	u16                        next_blk;             /*     0     2 */
	u8                         sig_id;               /*     2     1 */
	u8                         routing;              /*     3     1 */
	u16                        data;                 /*     4     2 */
	u16                        size;                 /*     6     2 */
	u8                         pri;                  /*     8     1 */
	u8                         service_class;        /*     9     1 */
	struct {
		u8                 daddr[6];             /*    10     6 */
		u8                 saddr[6];             /*    16     6 */
	} addr;                                          /*    10    12 */

	/* size: 22, cachelines: 1, members: 8 */
	/* last cacheline: 22 bytes */
};

$ pahole -C wl3501_md_ind drivers/net/wireless/wl3501_cs.o
struct wl3501_md_ind {
	u16                        next_blk;             /*     0     2 */
	u8                         sig_id;               /*     2     1 */
	u8                         routing;              /*     3     1 */
	u16                        data;                 /*     4     2 */
	u16                        size;                 /*     6     2 */
	u8                         reception;            /*     8     1 */
	u8                         pri;                  /*     9     1 */
	u8                         service_class;        /*    10     1 */
	struct {
		u8                 daddr[6];             /*    11     6 */
		u8                 saddr[6];             /*    17     6 */
	} addr;                                          /*    11    12 */

	/* size: 24, cachelines: 1, members: 9 */
	/* padding: 1 */
	/* last cacheline: 24 bytes */
};

The problem is that the original code is trying to copy data into a
couple of arrays adjacent to each other in a single call to memcpy().
Now that a new struct _addr_ enclosing those two adjacent arrays
is introduced, memcpy() doesn't overrun the length of &sig.daddr[0]
and &sig.daddr, because the address of the new struct object _addr_
is used, instead.

This helps with the ongoing efforts to globally enable -Warray-bounds
and get us closer to being able to tighten the FORTIFY_SOURCE routines
on memcpy().

Link: https://github.com/KSPP/linux/issues/109
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/d260fe56aed7112bff2be5b4d152d03ad7b78e78.1618442265.git.gustavoars@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/wl3501.h    | 12 ++++++++----
 drivers/net/wireless/wl3501_cs.c | 10 ++++++----
 2 files changed, 14 insertions(+), 8 deletions(-)

diff --git a/drivers/net/wireless/wl3501.h b/drivers/net/wireless/wl3501.h
index 3fbfd19818f1..ba2a36cfb1c8 100644
--- a/drivers/net/wireless/wl3501.h
+++ b/drivers/net/wireless/wl3501.h
@@ -470,8 +470,10 @@ struct wl3501_md_req {
 	u16	size;
 	u8	pri;
 	u8	service_class;
-	u8	daddr[ETH_ALEN];
-	u8	saddr[ETH_ALEN];
+	struct {
+		u8	daddr[ETH_ALEN];
+		u8	saddr[ETH_ALEN];
+	} addr;
 };
 
 struct wl3501_md_ind {
@@ -483,8 +485,10 @@ struct wl3501_md_ind {
 	u8	reception;
 	u8	pri;
 	u8	service_class;
-	u8	daddr[ETH_ALEN];
-	u8	saddr[ETH_ALEN];
+	struct {
+		u8	daddr[ETH_ALEN];
+		u8	saddr[ETH_ALEN];
+	} addr;
 };
 
 struct wl3501_md_confirm {
diff --git a/drivers/net/wireless/wl3501_cs.c b/drivers/net/wireless/wl3501_cs.c
index 932f3f81e8cf..f49a44581ede 100644
--- a/drivers/net/wireless/wl3501_cs.c
+++ b/drivers/net/wireless/wl3501_cs.c
@@ -468,6 +468,7 @@ static int wl3501_send_pkt(struct wl3501_card *this, u8 *data, u16 len)
 	struct wl3501_md_req sig = {
 		.sig_id = WL3501_SIG_MD_REQ,
 	};
+	size_t sig_addr_len = sizeof(sig.addr);
 	u8 *pdata = (char *)data;
 	int rc = -EIO;
 
@@ -483,9 +484,9 @@ static int wl3501_send_pkt(struct wl3501_card *this, u8 *data, u16 len)
 			goto out;
 		}
 		rc = 0;
-		memcpy(&sig.daddr[0], pdata, 12);
-		pktlen = len - 12;
-		pdata += 12;
+		memcpy(&sig.addr, pdata, sig_addr_len);
+		pktlen = len - sig_addr_len;
+		pdata += sig_addr_len;
 		sig.data = bf;
 		if (((*pdata) * 256 + (*(pdata + 1))) > 1500) {
 			u8 addr4[ETH_ALEN] = {
@@ -979,7 +980,8 @@ static inline void wl3501_md_ind_interrupt(struct net_device *dev,
 	} else {
 		skb->dev = dev;
 		skb_reserve(skb, 2); /* IP headers on 16 bytes boundaries */
-		skb_copy_to_linear_data(skb, (unsigned char *)&sig.daddr, 12);
+		skb_copy_to_linear_data(skb, (unsigned char *)&sig.addr,
+					sizeof(sig.addr));
 		wl3501_receive(this, skb->data, pkt_len);
 		skb_put(skb, pkt_len);
 		skb->protocol	= eth_type_trans(skb, dev);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 188/240] wl3501_cs: Fix out-of-bounds warnings in wl3501_mgmt_join
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (186 preceding siblings ...)
  2021-05-20  9:22 ` [PATCH 4.9 187/240] wl3501_cs: Fix out-of-bounds warnings in wl3501_send_pkt Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 189/240] powerpc/iommu: Annotate nested lock for lockdep Greg Kroah-Hartman
                   ` (56 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, kernel test robot,
	Gustavo A. R. Silva, Kees Cook, Kalle Valo, Sasha Levin

From: Gustavo A. R. Silva <gustavoars@kernel.org>

[ Upstream commit bb43e5718d8f1b46e7a77e7b39be3c691f293050 ]

Fix the following out-of-bounds warnings by adding a new structure
wl3501_req instead of duplicating the same members in structure
wl3501_join_req and wl3501_scan_confirm:

arch/x86/include/asm/string_32.h:182:25: warning: '__builtin_memcpy' offset [39, 108] from the object at 'sig' is out of the bounds of referenced subobject 'beacon_period' with type 'short unsigned int' at offset 36 [-Warray-bounds]
arch/x86/include/asm/string_32.h:182:25: warning: '__builtin_memcpy' offset [25, 95] from the object at 'sig' is out of the bounds of referenced subobject 'beacon_period' with type 'short unsigned int' at offset 22 [-Warray-bounds]

Refactor the code, accordingly:

$ pahole -C wl3501_req drivers/net/wireless/wl3501_cs.o
struct wl3501_req {
        u16                        beacon_period;        /*     0     2 */
        u16                        dtim_period;          /*     2     2 */
        u16                        cap_info;             /*     4     2 */
        u8                         bss_type;             /*     6     1 */
        u8                         bssid[6];             /*     7     6 */
        struct iw_mgmt_essid_pset  ssid;                 /*    13    34 */
        struct iw_mgmt_ds_pset     ds_pset;              /*    47     3 */
        struct iw_mgmt_cf_pset     cf_pset;              /*    50     8 */
        struct iw_mgmt_ibss_pset   ibss_pset;            /*    58     4 */
        struct iw_mgmt_data_rset   bss_basic_rset;       /*    62    10 */

        /* size: 72, cachelines: 2, members: 10 */
        /* last cacheline: 8 bytes */
};

$ pahole -C wl3501_join_req drivers/net/wireless/wl3501_cs.o
struct wl3501_join_req {
        u16                        next_blk;             /*     0     2 */
        u8                         sig_id;               /*     2     1 */
        u8                         reserved;             /*     3     1 */
        struct iw_mgmt_data_rset   operational_rset;     /*     4    10 */
        u16                        reserved2;            /*    14     2 */
        u16                        timeout;              /*    16     2 */
        u16                        probe_delay;          /*    18     2 */
        u8                         timestamp[8];         /*    20     8 */
        u8                         local_time[8];        /*    28     8 */
        struct wl3501_req          req;                  /*    36    72 */

        /* size: 108, cachelines: 2, members: 10 */
        /* last cacheline: 44 bytes */
};

$ pahole -C wl3501_scan_confirm drivers/net/wireless/wl3501_cs.o
struct wl3501_scan_confirm {
        u16                        next_blk;             /*     0     2 */
        u8                         sig_id;               /*     2     1 */
        u8                         reserved;             /*     3     1 */
        u16                        status;               /*     4     2 */
        char                       timestamp[8];         /*     6     8 */
        char                       localtime[8];         /*    14     8 */
        struct wl3501_req          req;                  /*    22    72 */
        /* --- cacheline 1 boundary (64 bytes) was 30 bytes ago --- */
        u8                         rssi;                 /*    94     1 */

        /* size: 96, cachelines: 2, members: 8 */
        /* padding: 1 */
        /* last cacheline: 32 bytes */
};

The problem is that the original code is trying to copy data into a
bunch of struct members adjacent to each other in a single call to
memcpy(). Now that a new struct wl3501_req enclosing all those adjacent
members is introduced, memcpy() doesn't overrun the length of
&sig.beacon_period and &this->bss_set[i].beacon_period, because the
address of the new struct object _req_ is used as the destination,
instead.

This helps with the ongoing efforts to globally enable -Warray-bounds
and get us closer to being able to tighten the FORTIFY_SOURCE routines
on memcpy().

Link: https://github.com/KSPP/linux/issues/109
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1fbaf516da763b50edac47d792a9145aa4482e29.1618442265.git.gustavoars@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/wl3501.h    | 35 +++++++++++--------------
 drivers/net/wireless/wl3501_cs.c | 44 +++++++++++++++++---------------
 2 files changed, 38 insertions(+), 41 deletions(-)

diff --git a/drivers/net/wireless/wl3501.h b/drivers/net/wireless/wl3501.h
index ba2a36cfb1c8..ca2021bcac14 100644
--- a/drivers/net/wireless/wl3501.h
+++ b/drivers/net/wireless/wl3501.h
@@ -378,16 +378,7 @@ struct wl3501_get_confirm {
 	u8	mib_value[100];
 };
 
-struct wl3501_join_req {
-	u16			    next_blk;
-	u8			    sig_id;
-	u8			    reserved;
-	struct iw_mgmt_data_rset    operational_rset;
-	u16			    reserved2;
-	u16			    timeout;
-	u16			    probe_delay;
-	u8			    timestamp[8];
-	u8			    local_time[8];
+struct wl3501_req {
 	u16			    beacon_period;
 	u16			    dtim_period;
 	u16			    cap_info;
@@ -400,6 +391,19 @@ struct wl3501_join_req {
 	struct iw_mgmt_data_rset    bss_basic_rset;
 };
 
+struct wl3501_join_req {
+	u16			    next_blk;
+	u8			    sig_id;
+	u8			    reserved;
+	struct iw_mgmt_data_rset    operational_rset;
+	u16			    reserved2;
+	u16			    timeout;
+	u16			    probe_delay;
+	u8			    timestamp[8];
+	u8			    local_time[8];
+	struct wl3501_req	    req;
+};
+
 struct wl3501_join_confirm {
 	u16	next_blk;
 	u8	sig_id;
@@ -442,16 +446,7 @@ struct wl3501_scan_confirm {
 	u16			    status;
 	char			    timestamp[8];
 	char			    localtime[8];
-	u16			    beacon_period;
-	u16			    dtim_period;
-	u16			    cap_info;
-	u8			    bss_type;
-	u8			    bssid[ETH_ALEN];
-	struct iw_mgmt_essid_pset   ssid;
-	struct iw_mgmt_ds_pset	    ds_pset;
-	struct iw_mgmt_cf_pset	    cf_pset;
-	struct iw_mgmt_ibss_pset    ibss_pset;
-	struct iw_mgmt_data_rset    bss_basic_rset;
+	struct wl3501_req	    req;
 	u8			    rssi;
 };
 
diff --git a/drivers/net/wireless/wl3501_cs.c b/drivers/net/wireless/wl3501_cs.c
index f49a44581ede..959844a10861 100644
--- a/drivers/net/wireless/wl3501_cs.c
+++ b/drivers/net/wireless/wl3501_cs.c
@@ -589,7 +589,7 @@ static int wl3501_mgmt_join(struct wl3501_card *this, u16 stas)
 	struct wl3501_join_req sig = {
 		.sig_id		  = WL3501_SIG_JOIN_REQ,
 		.timeout	  = 10,
-		.ds_pset = {
+		.req.ds_pset = {
 			.el = {
 				.id  = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
 				.len = 1,
@@ -598,7 +598,7 @@ static int wl3501_mgmt_join(struct wl3501_card *this, u16 stas)
 		},
 	};
 
-	memcpy(&sig.beacon_period, &this->bss_set[stas].beacon_period, 72);
+	memcpy(&sig.req, &this->bss_set[stas].req, sizeof(sig.req));
 	return wl3501_esbq_exec(this, &sig, sizeof(sig));
 }
 
@@ -666,35 +666,37 @@ static void wl3501_mgmt_scan_confirm(struct wl3501_card *this, u16 addr)
 	if (sig.status == WL3501_STATUS_SUCCESS) {
 		pr_debug("success");
 		if ((this->net_type == IW_MODE_INFRA &&
-		     (sig.cap_info & WL3501_MGMT_CAPABILITY_ESS)) ||
+		     (sig.req.cap_info & WL3501_MGMT_CAPABILITY_ESS)) ||
 		    (this->net_type == IW_MODE_ADHOC &&
-		     (sig.cap_info & WL3501_MGMT_CAPABILITY_IBSS)) ||
+		     (sig.req.cap_info & WL3501_MGMT_CAPABILITY_IBSS)) ||
 		    this->net_type == IW_MODE_AUTO) {
 			if (!this->essid.el.len)
 				matchflag = 1;
 			else if (this->essid.el.len == 3 &&
 				 !memcmp(this->essid.essid, "ANY", 3))
 				matchflag = 1;
-			else if (this->essid.el.len != sig.ssid.el.len)
+			else if (this->essid.el.len != sig.req.ssid.el.len)
 				matchflag = 0;
-			else if (memcmp(this->essid.essid, sig.ssid.essid,
+			else if (memcmp(this->essid.essid, sig.req.ssid.essid,
 					this->essid.el.len))
 				matchflag = 0;
 			else
 				matchflag = 1;
 			if (matchflag) {
 				for (i = 0; i < this->bss_cnt; i++) {
-					if (ether_addr_equal_unaligned(this->bss_set[i].bssid, sig.bssid)) {
+					if (ether_addr_equal_unaligned(this->bss_set[i].req.bssid,
+								       sig.req.bssid)) {
 						matchflag = 0;
 						break;
 					}
 				}
 			}
 			if (matchflag && (i < 20)) {
-				memcpy(&this->bss_set[i].beacon_period,
-				       &sig.beacon_period, 73);
+				memcpy(&this->bss_set[i].req,
+				       &sig.req, sizeof(sig.req));
 				this->bss_cnt++;
 				this->rssi = sig.rssi;
+				this->bss_set[i].rssi = sig.rssi;
 			}
 		}
 	} else if (sig.status == WL3501_STATUS_TIMEOUT) {
@@ -886,19 +888,19 @@ static void wl3501_mgmt_join_confirm(struct net_device *dev, u16 addr)
 			if (this->join_sta_bss < this->bss_cnt) {
 				const int i = this->join_sta_bss;
 				memcpy(this->bssid,
-				       this->bss_set[i].bssid, ETH_ALEN);
-				this->chan = this->bss_set[i].ds_pset.chan;
+				       this->bss_set[i].req.bssid, ETH_ALEN);
+				this->chan = this->bss_set[i].req.ds_pset.chan;
 				iw_copy_mgmt_info_element(&this->keep_essid.el,
-						     &this->bss_set[i].ssid.el);
+						     &this->bss_set[i].req.ssid.el);
 				wl3501_mgmt_auth(this);
 			}
 		} else {
 			const int i = this->join_sta_bss;
 
-			memcpy(&this->bssid, &this->bss_set[i].bssid, ETH_ALEN);
-			this->chan = this->bss_set[i].ds_pset.chan;
+			memcpy(&this->bssid, &this->bss_set[i].req.bssid, ETH_ALEN);
+			this->chan = this->bss_set[i].req.ds_pset.chan;
 			iw_copy_mgmt_info_element(&this->keep_essid.el,
-						  &this->bss_set[i].ssid.el);
+						  &this->bss_set[i].req.ssid.el);
 			wl3501_online(dev);
 		}
 	} else {
@@ -1576,30 +1578,30 @@ static int wl3501_get_scan(struct net_device *dev, struct iw_request_info *info,
 	for (i = 0; i < this->bss_cnt; ++i) {
 		iwe.cmd			= SIOCGIWAP;
 		iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
-		memcpy(iwe.u.ap_addr.sa_data, this->bss_set[i].bssid, ETH_ALEN);
+		memcpy(iwe.u.ap_addr.sa_data, this->bss_set[i].req.bssid, ETH_ALEN);
 		current_ev = iwe_stream_add_event(info, current_ev,
 						  extra + IW_SCAN_MAX_DATA,
 						  &iwe, IW_EV_ADDR_LEN);
 		iwe.cmd		  = SIOCGIWESSID;
 		iwe.u.data.flags  = 1;
-		iwe.u.data.length = this->bss_set[i].ssid.el.len;
+		iwe.u.data.length = this->bss_set[i].req.ssid.el.len;
 		current_ev = iwe_stream_add_point(info, current_ev,
 						  extra + IW_SCAN_MAX_DATA,
 						  &iwe,
-						  this->bss_set[i].ssid.essid);
+						  this->bss_set[i].req.ssid.essid);
 		iwe.cmd	   = SIOCGIWMODE;
-		iwe.u.mode = this->bss_set[i].bss_type;
+		iwe.u.mode = this->bss_set[i].req.bss_type;
 		current_ev = iwe_stream_add_event(info, current_ev,
 						  extra + IW_SCAN_MAX_DATA,
 						  &iwe, IW_EV_UINT_LEN);
 		iwe.cmd = SIOCGIWFREQ;
-		iwe.u.freq.m = this->bss_set[i].ds_pset.chan;
+		iwe.u.freq.m = this->bss_set[i].req.ds_pset.chan;
 		iwe.u.freq.e = 0;
 		current_ev = iwe_stream_add_event(info, current_ev,
 						  extra + IW_SCAN_MAX_DATA,
 						  &iwe, IW_EV_FREQ_LEN);
 		iwe.cmd = SIOCGIWENCODE;
-		if (this->bss_set[i].cap_info & WL3501_MGMT_CAPABILITY_PRIVACY)
+		if (this->bss_set[i].req.cap_info & WL3501_MGMT_CAPABILITY_PRIVACY)
 			iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
 		else
 			iwe.u.data.flags = IW_ENCODE_DISABLED;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 189/240] powerpc/iommu: Annotate nested lock for lockdep
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (187 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 188/240] wl3501_cs: Fix out-of-bounds warnings in wl3501_mgmt_join Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 190/240] net: ethernet: mtk_eth_soc: fix RX VLAN offload Greg Kroah-Hartman
                   ` (55 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Alexey Kardashevskiy,
	Michael Ellerman, Sasha Levin

From: Alexey Kardashevskiy <aik@ozlabs.ru>

[ Upstream commit cc7130bf119add37f36238343a593b71ef6ecc1e ]

The IOMMU table is divided into pools for concurrent mappings and each
pool has a separate spinlock. When taking the ownership of an IOMMU group
to pass through a device to a VM, we lock these spinlocks which triggers
a false negative warning in lockdep (below).

This fixes it by annotating the large pool's spinlock as a nest lock
which makes lockdep not complaining when locking nested locks if
the nest lock is locked already.

===
WARNING: possible recursive locking detected
5.11.0-le_syzkaller_a+fstn1 #100 Not tainted
--------------------------------------------
qemu-system-ppc/4129 is trying to acquire lock:
c0000000119bddb0 (&(p->lock)/1){....}-{2:2}, at: iommu_take_ownership+0xac/0x1e0

but task is already holding lock:
c0000000119bdd30 (&(p->lock)/1){....}-{2:2}, at: iommu_take_ownership+0xac/0x1e0

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&(p->lock)/1);
  lock(&(p->lock)/1);
===

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210301063653.51003-1-aik@ozlabs.ru
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/powerpc/kernel/iommu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index 9bfdd2510fd5..2cf900d16527 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -1021,7 +1021,7 @@ int iommu_take_ownership(struct iommu_table *tbl)
 
 	spin_lock_irqsave(&tbl->large_pool.lock, flags);
 	for (i = 0; i < tbl->nr_pools; i++)
-		spin_lock(&tbl->pools[i].lock);
+		spin_lock_nest_lock(&tbl->pools[i].lock, &tbl->large_pool.lock);
 
 	if (tbl->it_offset == 0)
 		clear_bit(0, tbl->it_map);
@@ -1050,7 +1050,7 @@ void iommu_release_ownership(struct iommu_table *tbl)
 
 	spin_lock_irqsave(&tbl->large_pool.lock, flags);
 	for (i = 0; i < tbl->nr_pools; i++)
-		spin_lock(&tbl->pools[i].lock);
+		spin_lock_nest_lock(&tbl->pools[i].lock, &tbl->large_pool.lock);
 
 	memset(tbl->it_map, 0, sz);
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 190/240] net: ethernet: mtk_eth_soc: fix RX VLAN offload
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (188 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 189/240] powerpc/iommu: Annotate nested lock for lockdep Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 191/240] ASoC: rt286: Make RT286_SET_GPIO_* readable and writable Greg Kroah-Hartman
                   ` (54 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Felix Fietkau, Ilya Lipnitskiy,
	David S. Miller, Sasha Levin

From: Felix Fietkau <nbd@nbd.name>

[ Upstream commit 3f57d8c40fea9b20543cab4da12f4680d2ef182c ]

The VLAN ID in the rx descriptor is only valid if the RX_DMA_VTAG bit is
set. Fixes frames wrongly marked with VLAN tags.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
[Ilya: fix commit message]
Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/mediatek/mtk_eth_soc.c | 2 +-
 drivers/net/ethernet/mediatek/mtk_eth_soc.h | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index d10c8a8156bc..5b072bf80783 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -964,7 +964,7 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget,
 		skb->protocol = eth_type_trans(skb, netdev);
 
 		if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX &&
-		    RX_DMA_VID(trxd.rxd3))
+		    (trxd.rxd2 & RX_DMA_VTAG))
 			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
 					       RX_DMA_VID(trxd.rxd3));
 		napi_gro_receive(napi, skb);
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
index 99b1c8e9f16f..2e7ccd8261c3 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -272,6 +272,7 @@
 #define RX_DMA_DONE		BIT(31)
 #define RX_DMA_PLEN0(_x)	(((_x) & 0x3fff) << 16)
 #define RX_DMA_GET_PLEN0(_x)	(((_x) >> 16) & 0x3fff)
+#define RX_DMA_VTAG		BIT(15)
 
 /* QDMA descriptor rxd3 */
 #define RX_DMA_VID(_x)		((_x) & 0xfff)
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 191/240] ASoC: rt286: Make RT286_SET_GPIO_* readable and writable
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (189 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 190/240] net: ethernet: mtk_eth_soc: fix RX VLAN offload Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 192/240] f2fs: fix a redundant call to f2fs_balance_fs if an error occurs Greg Kroah-Hartman
                   ` (53 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, David Ward, Pierre-Louis Bossart,
	Mark Brown, Sasha Levin

From: David Ward <david.ward@gatech.edu>

[ Upstream commit cd8499d5c03ba260e3191e90236d0e5f6b147563 ]

The GPIO configuration cannot be applied if the registers are inaccessible.
This prevented the headset mic from working on the Dell XPS 13 9343.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=114171
Signed-off-by: David Ward <david.ward@gatech.edu>
Link: https://lore.kernel.org/r/20210418134658.4333-5-david.ward@gatech.edu
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/codecs/rt286.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/soc/codecs/rt286.c b/sound/soc/codecs/rt286.c
index 4a0ab620983d..a41dd9d1eb82 100644
--- a/sound/soc/codecs/rt286.c
+++ b/sound/soc/codecs/rt286.c
@@ -174,6 +174,9 @@ static bool rt286_readable_register(struct device *dev, unsigned int reg)
 	case RT286_PROC_COEF:
 	case RT286_SET_AMP_GAIN_ADC_IN1:
 	case RT286_SET_AMP_GAIN_ADC_IN2:
+	case RT286_SET_GPIO_MASK:
+	case RT286_SET_GPIO_DIRECTION:
+	case RT286_SET_GPIO_DATA:
 	case RT286_SET_POWER(RT286_DAC_OUT1):
 	case RT286_SET_POWER(RT286_DAC_OUT2):
 	case RT286_SET_POWER(RT286_ADC_IN1):
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 192/240] f2fs: fix a redundant call to f2fs_balance_fs if an error occurs
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (190 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 191/240] ASoC: rt286: Make RT286_SET_GPIO_* readable and writable Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 193/240] PCI: Release OF node in pci_scan_device()s error path Greg Kroah-Hartman
                   ` (52 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Colin Ian King, Chao Yu, Jaegeuk Kim,
	Sasha Levin

From: Colin Ian King <colin.king@canonical.com>

[ Upstream commit 28e18ee636ba28532dbe425540af06245a0bbecb ]

The  uninitialized variable dn.node_changed does not get set when a
call to f2fs_get_node_page fails.  This uninitialized value gets used
in the call to f2fs_balance_fs() that may or not may not balances
dirty node and dentry pages depending on the uninitialized state of
the variable. Fix this by only calling f2fs_balance_fs if err is
not set.

Thanks to Jaegeuk Kim for suggesting an appropriate fix.

Addresses-Coverity: ("Uninitialized scalar variable")
Fixes: 2a3407607028 ("f2fs: call f2fs_balance_fs only when node was changed")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/f2fs/inline.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
index 482888ee8942..481fae63f163 100644
--- a/fs/f2fs/inline.c
+++ b/fs/f2fs/inline.c
@@ -196,7 +196,8 @@ out:
 
 	f2fs_put_page(page, 1);
 
-	f2fs_balance_fs(sbi, dn.node_changed);
+	if (!err)
+		f2fs_balance_fs(sbi, dn.node_changed);
 
 	return err;
 }
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 193/240] PCI: Release OF node in pci_scan_device()s error path
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (191 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 192/240] f2fs: fix a redundant call to f2fs_balance_fs if an error occurs Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 194/240] ARM: 9064/1: hw_breakpoint: Do not directly check the events overflow_handler hook Greg Kroah-Hartman
                   ` (51 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Dmitry Baryshkov, Bjorn Helgaas,
	Leon Romanovsky, Sasha Levin

From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

[ Upstream commit c99e755a4a4c165cad6effb39faffd0f3377c02d ]

In pci_scan_device(), if pci_setup_device() fails for any reason, the code
will not release device's of_node by calling pci_release_of_node().  Fix
that by calling the release function.

Fixes: 98d9f30c820d ("pci/of: Match PCI devices to OF nodes dynamically")
Link: https://lore.kernel.org/r/20210124232826.1879-1-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pci/probe.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 19658873b4c1..ddf5ba63b195 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1694,6 +1694,7 @@ static struct pci_dev *pci_scan_device(struct pci_bus *bus, int devfn)
 	pci_set_of_node(dev);
 
 	if (pci_setup_device(dev)) {
+		pci_release_of_node(dev);
 		pci_bus_put(dev->bus);
 		kfree(dev);
 		return NULL;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 194/240] ARM: 9064/1: hw_breakpoint: Do not directly check the events overflow_handler hook
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (192 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 193/240] PCI: Release OF node in pci_scan_device()s error path Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 195/240] NFSv4.2: Always flush out writes in nfs42_proc_fallocate() Greg Kroah-Hartman
                   ` (50 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Zhen Lei, Wang Nan, Will Deacon,
	Russell King, Sasha Levin

From: Zhen Lei <thunder.leizhen@huawei.com>

[ Upstream commit a506bd5756290821a4314f502b4bafc2afcf5260 ]

The commit 1879445dfa7b ("perf/core: Set event's default
::overflow_handler()") set a default event->overflow_handler in
perf_event_alloc(), and replace the check event->overflow_handler with
is_default_overflow_handler(), but one is missing.

Currently, the bp->overflow_handler can not be NULL. As a result,
enable_single_step() is always not invoked.

Comments from Zhen Lei:

 https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210207105934.2001-1-thunder.leizhen@huawei.com/

Fixes: 1879445dfa7b ("perf/core: Set event's default ::overflow_handler()")
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Cc: Wang Nan <wangnan0@huawei.com>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/kernel/hw_breakpoint.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/kernel/hw_breakpoint.c b/arch/arm/kernel/hw_breakpoint.c
index 671dbc28e5d4..59e04e2d9d9d 100644
--- a/arch/arm/kernel/hw_breakpoint.c
+++ b/arch/arm/kernel/hw_breakpoint.c
@@ -891,7 +891,7 @@ static void breakpoint_handler(unsigned long unknown, struct pt_regs *regs)
 			info->trigger = addr;
 			pr_debug("breakpoint fired: address = 0x%x\n", addr);
 			perf_bp_event(bp, regs);
-			if (!bp->overflow_handler)
+			if (is_default_overflow_handler(bp))
 				enable_single_step(bp, addr);
 			goto unlock;
 		}
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 195/240] NFSv4.2: Always flush out writes in nfs42_proc_fallocate()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (193 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 194/240] ARM: 9064/1: hw_breakpoint: Do not directly check the events overflow_handler hook Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 196/240] NFS: Deal correctly with attribute generation counter overflow Greg Kroah-Hartman
                   ` (49 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Trond Myklebust, Sasha Levin

From: Trond Myklebust <trond.myklebust@hammerspace.com>

[ Upstream commit 99f23783224355e7022ceea9b8d9f62c0fd01bd8 ]

Whether we're allocating or delallocating space, we should flush out the
pending writes in order to avoid races with attribute updates.

Fixes: 1e564d3dbd68 ("NFSv4.2: Fix a race in nfs42_proc_deallocate()")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/nfs/nfs42proc.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c
index 5cda392028ce..7e9fb1119bcf 100644
--- a/fs/nfs/nfs42proc.c
+++ b/fs/nfs/nfs42proc.c
@@ -56,7 +56,8 @@ static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
 static int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
 				loff_t offset, loff_t len)
 {
-	struct nfs_server *server = NFS_SERVER(file_inode(filep));
+	struct inode *inode = file_inode(filep);
+	struct nfs_server *server = NFS_SERVER(inode);
 	struct nfs4_exception exception = { };
 	struct nfs_lock_context *lock;
 	int err;
@@ -65,9 +66,13 @@ static int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
 	if (IS_ERR(lock))
 		return PTR_ERR(lock);
 
-	exception.inode = file_inode(filep);
+	exception.inode = inode;
 	exception.state = lock->open_context->state;
 
+	err = nfs_sync_inode(inode);
+	if (err)
+		goto out;
+
 	do {
 		err = _nfs42_proc_fallocate(msg, filep, lock, offset, len);
 		if (err == -ENOTSUPP) {
@@ -76,7 +81,7 @@ static int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
 		}
 		err = nfs4_handle_exception(server, err, &exception);
 	} while (exception.retry);
-
+out:
 	nfs_put_lock_context(lock);
 	return err;
 }
@@ -114,16 +119,13 @@ int nfs42_proc_deallocate(struct file *filep, loff_t offset, loff_t len)
 		return -EOPNOTSUPP;
 
 	inode_lock(inode);
-	err = nfs_sync_inode(inode);
-	if (err)
-		goto out_unlock;
 
 	err = nfs42_proc_fallocate(&msg, filep, offset, len);
 	if (err == 0)
 		truncate_pagecache_range(inode, offset, (offset + len) -1);
 	if (err == -EOPNOTSUPP)
 		NFS_SERVER(inode)->caps &= ~NFS_CAP_DEALLOCATE;
-out_unlock:
+
 	inode_unlock(inode);
 	return err;
 }
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 196/240] NFS: Deal correctly with attribute generation counter overflow
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (194 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 195/240] NFSv4.2: Always flush out writes in nfs42_proc_fallocate() Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 197/240] pNFS/flexfiles: fix incorrect size check in decode_nfs_fh() Greg Kroah-Hartman
                   ` (48 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Trond Myklebust, Sasha Levin

From: Trond Myklebust <trond.myklebust@hammerspace.com>

[ Upstream commit 9fdbfad1777cb4638f489eeb62d85432010c0031 ]

We need to use unsigned long subtraction and then convert to signed in
order to deal correcly with C overflow rules.

Fixes: f5062003465c ("NFS: Set an attribute barrier on all updates")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/nfs/inode.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 6c0035761d17..7a94f5a5f8c8 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -1469,10 +1469,10 @@ EXPORT_SYMBOL_GPL(_nfs_display_fhandle);
  */
 static int nfs_inode_attrs_need_update(const struct inode *inode, const struct nfs_fattr *fattr)
 {
-	const struct nfs_inode *nfsi = NFS_I(inode);
+	unsigned long attr_gencount = NFS_I(inode)->attr_gencount;
 
-	return ((long)fattr->gencount - (long)nfsi->attr_gencount) > 0 ||
-		((long)nfsi->attr_gencount - (long)nfs_read_attr_generation_counter() > 0);
+	return (long)(fattr->gencount - attr_gencount) > 0 ||
+	       (long)(attr_gencount - nfs_read_attr_generation_counter()) > 0;
 }
 
 static int nfs_refresh_inode_locked(struct inode *inode, struct nfs_fattr *fattr)
@@ -1882,7 +1882,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
 			nfsi->attrtimeo_timestamp = now;
 		}
 		/* Set the barrier to be more recent than this fattr */
-		if ((long)fattr->gencount - (long)nfsi->attr_gencount > 0)
+		if ((long)(fattr->gencount - nfsi->attr_gencount) > 0)
 			nfsi->attr_gencount = fattr->gencount;
 	}
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 197/240] pNFS/flexfiles: fix incorrect size check in decode_nfs_fh()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (195 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 196/240] NFS: Deal correctly with attribute generation counter overflow Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 198/240] NFSv4.2 fix handling of sr_eof in SEEKs reply Greg Kroah-Hartman
                   ` (47 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Nikola Livic, Dan Carpenter,
	Trond Myklebust, Sasha Levin

From: Nikola Livic <nlivic@gmail.com>

[ Upstream commit ed34695e15aba74f45247f1ee2cf7e09d449f925 ]

We (adam zabrocki, alexander matrosov, alexander tereshkin, maksym
bazalii) observed the check:

	if (fh->size > sizeof(struct nfs_fh))

should not use the size of the nfs_fh struct which includes an extra two
bytes from the size field.

struct nfs_fh {
	unsigned short         size;
	unsigned char          data[NFS_MAXFHSIZE];
}

but should determine the size from data[NFS_MAXFHSIZE] so the memcpy
will not write 2 bytes beyond destination.  The proposed fix is to
compare against the NFS_MAXFHSIZE directly, as is done elsewhere in fs
code base.

Fixes: d67ae825a59d ("pnfs/flexfiles: Add the FlexFile Layout Driver")
Signed-off-by: Nikola Livic <nlivic@gmail.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/nfs/flexfilelayout/flexfilelayout.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c
index 83149cbae093..ee1225369700 100644
--- a/fs/nfs/flexfilelayout/flexfilelayout.c
+++ b/fs/nfs/flexfilelayout/flexfilelayout.c
@@ -93,7 +93,7 @@ static int decode_nfs_fh(struct xdr_stream *xdr, struct nfs_fh *fh)
 	if (unlikely(!p))
 		return -ENOBUFS;
 	fh->size = be32_to_cpup(p++);
-	if (fh->size > sizeof(struct nfs_fh)) {
+	if (fh->size > NFS_MAXFHSIZE) {
 		printk(KERN_ERR "NFS flexfiles: Too big fh received %d\n",
 		       fh->size);
 		return -EOVERFLOW;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 198/240] NFSv4.2 fix handling of sr_eof in SEEKs reply
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (196 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 197/240] pNFS/flexfiles: fix incorrect size check in decode_nfs_fh() Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 199/240] sctp: fix a SCTP_MIB_CURRESTAB leak in sctp_sf_do_dupcook_b Greg Kroah-Hartman
                   ` (46 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Olga Kornievskaia, Trond Myklebust,
	Sasha Levin

From: Olga Kornievskaia <kolga@netapp.com>

[ Upstream commit 73f5c88f521a630ea1628beb9c2d48a2e777a419 ]

Currently the client ignores the value of the sr_eof of the SEEK
operation. According to the spec, if the server didn't find the
requested extent and reached the end of the file, the server
would return sr_eof=true. In case the request for DATA and no
data was found (ie in the middle of the hole), then the lseek
expects that ENXIO would be returned.

Fixes: 1c6dcbe5ceff8 ("NFS: Implement SEEK")
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/nfs/nfs42proc.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c
index 7e9fb1119bcf..7efb9e0e9f25 100644
--- a/fs/nfs/nfs42proc.c
+++ b/fs/nfs/nfs42proc.c
@@ -294,7 +294,10 @@ static loff_t _nfs42_proc_llseek(struct file *filep,
 	if (status)
 		return status;
 
-	return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes);
+	if (whence == SEEK_DATA && res.sr_eof)
+		return -NFS4ERR_NXIO;
+	else
+		return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes);
 }
 
 loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence)
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 199/240] sctp: fix a SCTP_MIB_CURRESTAB leak in sctp_sf_do_dupcook_b
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (197 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 198/240] NFSv4.2 fix handling of sr_eof in SEEKs reply Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 200/240] drm/radeon: Fix off-by-one power_state index heap overwrite Greg Kroah-Hartman
                   ` (45 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Marcelo Ricardo Leitner, Xin Long,
	David S. Miller, Sasha Levin

From: Xin Long <lucien.xin@gmail.com>

[ Upstream commit f282df0391267fb2b263da1cc3233aa6fb81defc ]

Normally SCTP_MIB_CURRESTAB is always incremented once asoc enter into
ESTABLISHED from the state < ESTABLISHED and decremented when the asoc
is being deleted.

However, in sctp_sf_do_dupcook_b(), the asoc's state can be changed to
ESTABLISHED from the state >= ESTABLISHED where it shouldn't increment
SCTP_MIB_CURRESTAB. Otherwise, one asoc may increment MIB_CURRESTAB
multiple times but only decrement once at the end.

I was able to reproduce it by using scapy to do the 4-way shakehands,
after that I replayed the COOKIE-ECHO chunk with 'peer_vtag' field
changed to different values, and SCTP_MIB_CURRESTAB was incremented
multiple times and never went back to 0 even when the asoc was freed.

This patch is to fix it by only incrementing SCTP_MIB_CURRESTAB when
the state < ESTABLISHED in sctp_sf_do_dupcook_b().

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/sctp/sm_statefuns.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index 146b568962e0..9045f6bcb34c 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -1851,7 +1851,8 @@ static sctp_disposition_t sctp_sf_do_dupcook_b(struct net *net,
 	sctp_add_cmd_sf(commands, SCTP_CMD_UPDATE_ASSOC, SCTP_ASOC(new_asoc));
 	sctp_add_cmd_sf(commands, SCTP_CMD_NEW_STATE,
 			SCTP_STATE(SCTP_STATE_ESTABLISHED));
-	SCTP_INC_STATS(net, SCTP_MIB_CURRESTAB);
+	if (asoc->state < SCTP_STATE_ESTABLISHED)
+		SCTP_INC_STATS(net, SCTP_MIB_CURRESTAB);
 	sctp_add_cmd_sf(commands, SCTP_CMD_HB_TIMERS_START, SCTP_NULL());
 
 	repl = sctp_make_cookie_ack(new_asoc, chunk);
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 200/240] drm/radeon: Fix off-by-one power_state index heap overwrite
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (198 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 199/240] sctp: fix a SCTP_MIB_CURRESTAB leak in sctp_sf_do_dupcook_b Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 201/240] khugepaged: fix wrong result value for trace_mm_collapse_huge_page_isolate() Greg Kroah-Hartman
                   ` (44 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Erhard F.,
	Kees Cook, Alex Deucher, Sasha Levin

From: Kees Cook <keescook@chromium.org>

[ Upstream commit 5bbf219328849e83878bddb7c226d8d42e84affc ]

An out of bounds write happens when setting the default power state.
KASAN sees this as:

[drm] radeon: 512M of GTT memory ready.
[drm] GART: num cpu pages 131072, num gpu pages 131072
==================================================================
BUG: KASAN: slab-out-of-bounds in
radeon_atombios_parse_power_table_1_3+0x1837/0x1998 [radeon]
Write of size 4 at addr ffff88810178d858 by task systemd-udevd/157

CPU: 0 PID: 157 Comm: systemd-udevd Not tainted 5.12.0-E620 #50
Hardware name: eMachines        eMachines E620  /Nile       , BIOS V1.03 09/30/2008
Call Trace:
 dump_stack+0xa5/0xe6
 print_address_description.constprop.0+0x18/0x239
 kasan_report+0x170/0x1a8
 radeon_atombios_parse_power_table_1_3+0x1837/0x1998 [radeon]
 radeon_atombios_get_power_modes+0x144/0x1888 [radeon]
 radeon_pm_init+0x1019/0x1904 [radeon]
 rs690_init+0x76e/0x84a [radeon]
 radeon_device_init+0x1c1a/0x21e5 [radeon]
 radeon_driver_load_kms+0xf5/0x30b [radeon]
 drm_dev_register+0x255/0x4a0 [drm]
 radeon_pci_probe+0x246/0x2f6 [radeon]
 pci_device_probe+0x1aa/0x294
 really_probe+0x30e/0x850
 driver_probe_device+0xe6/0x135
 device_driver_attach+0xc1/0xf8
 __driver_attach+0x13f/0x146
 bus_for_each_dev+0xfa/0x146
 bus_add_driver+0x2b3/0x447
 driver_register+0x242/0x2c1
 do_one_initcall+0x149/0x2fd
 do_init_module+0x1ae/0x573
 load_module+0x4dee/0x5cca
 __do_sys_finit_module+0xf1/0x140
 do_syscall_64+0x33/0x40
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Without KASAN, this will manifest later when the kernel attempts to
allocate memory that was stomped, since it collides with the inline slab
freelist pointer:

invalid opcode: 0000 [#1] SMP NOPTI
CPU: 0 PID: 781 Comm: openrc-run.sh Tainted: G        W 5.10.12-gentoo-E620 #2
Hardware name: eMachines        eMachines E620  /Nile , BIOS V1.03       09/30/2008
RIP: 0010:kfree+0x115/0x230
Code: 89 c5 e8 75 ea ff ff 48 8b 00 0f ba e0 09 72 63 e8 1f f4 ff ff 41 89 c4 48 8b 45 00 0f ba e0 10 72 0a 48 8b 45 08 a8 01 75 02 <0f> 0b 44 89 e1 48 c7 c2 00 f0 ff ff be 06 00 00 00 48 d3 e2 48 c7
RSP: 0018:ffffb42f40267e10 EFLAGS: 00010246
RAX: ffffd61280ee8d88 RBX: 0000000000000004 RCX: 000000008010000d
RDX: 4000000000000000 RSI: ffffffffba1360b0 RDI: ffffd61280ee8d80
RBP: ffffd61280ee8d80 R08: ffffffffb91bebdf R09: 0000000000000000
R10: ffff8fe2c1047ac8 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000100
FS:  00007fe80eff6b68(0000) GS:ffff8fe339c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe80eec7bc0 CR3: 0000000038012000 CR4: 00000000000006f0
Call Trace:
 __free_fdtable+0x16/0x1f
 put_files_struct+0x81/0x9b
 do_exit+0x433/0x94d
 do_group_exit+0xa6/0xa6
 __x64_sys_exit_group+0xf/0xf
 do_syscall_64+0x33/0x40
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fe80ef64bea
Code: Unable to access opcode bytes at RIP 0x7fe80ef64bc0.
RSP: 002b:00007ffdb1c47528 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe80ef64bea
RDX: 00007fe80ef64f60 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 00007fe80ee2c620 R11: 0000000000000246 R12: 00007fe80eff41e0
R13: 00000000ffffffff R14: 0000000000000024 R15: 00007fe80edf9cd0
Modules linked in: radeon(+) ath5k(+) snd_hda_codec_realtek ...

Use a valid power_state index when initializing the "flags" and "misc"
and "misc2" fields.

Bug: https://bugzilla.kernel.org/show_bug.cgi?id=211537
Reported-by: Erhard F. <erhard_f@mailbox.org>
Fixes: a48b9b4edb8b ("drm/radeon/kms/pm: add asic specific callbacks for getting power state (v2)")
Fixes: 79daedc94281 ("drm/radeon/kms: minor pm cleanups")
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/radeon/radeon_atombios.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 5df3ec73021b..0bfbced3862e 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -2259,10 +2259,10 @@ static int radeon_atombios_parse_power_table_1_3(struct radeon_device *rdev)
 		rdev->pm.default_power_state_index = state_index - 1;
 		rdev->pm.power_state[state_index - 1].default_clock_mode =
 			&rdev->pm.power_state[state_index - 1].clock_info[0];
-		rdev->pm.power_state[state_index].flags &=
+		rdev->pm.power_state[state_index - 1].flags &=
 			~RADEON_PM_STATE_SINGLE_DISPLAY_ONLY;
-		rdev->pm.power_state[state_index].misc = 0;
-		rdev->pm.power_state[state_index].misc2 = 0;
+		rdev->pm.power_state[state_index - 1].misc = 0;
+		rdev->pm.power_state[state_index - 1].misc2 = 0;
 	}
 	return state_index;
 }
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 201/240] khugepaged: fix wrong result value for trace_mm_collapse_huge_page_isolate()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (199 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 200/240] drm/radeon: Fix off-by-one power_state index heap overwrite Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 202/240] mm/hugeltb: handle the error case in hugetlb_fix_reserve_counts() Greg Kroah-Hartman
                   ` (43 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Miaohe Lin, Kirill A. Shutemov,
	Dan Carpenter, Ebru Akagunduz, Mike Kravetz, Rik van Riel,
	Andrew Morton, Linus Torvalds, Sasha Levin

From: Miaohe Lin <linmiaohe@huawei.com>

[ Upstream commit 74e579bf231a337ab3786d59e64bc94f45ca7b3f ]

In writable and !referenced case, the result value should be
SCAN_LACK_REFERENCED_PAGE for trace_mm_collapse_huge_page_isolate()
instead of default 0 (SCAN_FAIL) here.

Link: https://lkml.kernel.org/r/20210306032947.35921-5-linmiaohe@huawei.com
Fixes: 7d2eba0557c1 ("mm: add tracepoint for scanning pages")
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 mm/khugepaged.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index 753b0e2fef36..0f1bdbae45e2 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -596,17 +596,17 @@ static int __collapse_huge_page_isolate(struct vm_area_struct *vma,
 		    mmu_notifier_test_young(vma->vm_mm, address))
 			referenced++;
 	}
-	if (likely(writable)) {
-		if (likely(referenced)) {
-			result = SCAN_SUCCEED;
-			trace_mm_collapse_huge_page_isolate(page, none_or_zero,
-							    referenced, writable, result);
-			return 1;
-		}
-	} else {
+
+	if (unlikely(!writable)) {
 		result = SCAN_PAGE_RO;
+	} else if (unlikely(!referenced)) {
+		result = SCAN_LACK_REFERENCED_PAGE;
+	} else {
+		result = SCAN_SUCCEED;
+		trace_mm_collapse_huge_page_isolate(page, none_or_zero,
+						    referenced, writable, result);
+		return 1;
 	}
-
 out:
 	release_pte_pages(pte, _pte);
 	trace_mm_collapse_huge_page_isolate(page, none_or_zero,
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 202/240] mm/hugeltb: handle the error case in hugetlb_fix_reserve_counts()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (200 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 201/240] khugepaged: fix wrong result value for trace_mm_collapse_huge_page_isolate() Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 203/240] ksm: fix potential missing rmap_item for stable_node Greg Kroah-Hartman
                   ` (42 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Miaohe Lin, Feilong Lin,
	Mike Kravetz, Andrew Morton, Linus Torvalds, Sasha Levin

From: Miaohe Lin <linmiaohe@huawei.com>

[ Upstream commit da56388c4397878a65b74f7fe97760f5aa7d316b ]

A rare out of memory error would prevent removal of the reserve map region
for a page.  hugetlb_fix_reserve_counts() handles this rare case to avoid
dangling with incorrect counts.  Unfortunately, hugepage_subpool_get_pages
and hugetlb_acct_memory could possibly fail too.  We should correctly
handle these cases.

Link: https://lkml.kernel.org/r/20210410072348.20437-5-linmiaohe@huawei.com
Fixes: b5cec28d36f5 ("hugetlbfs: truncate_hugepages() takes a range of pages")
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Feilong Lin <linfeilong@huawei.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 mm/hugetlb.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index e2b5e38e7a4b..9049e8613237 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -586,13 +586,20 @@ void hugetlb_fix_reserve_counts(struct inode *inode)
 {
 	struct hugepage_subpool *spool = subpool_inode(inode);
 	long rsv_adjust;
+	bool reserved = false;
 
 	rsv_adjust = hugepage_subpool_get_pages(spool, 1);
-	if (rsv_adjust) {
+	if (rsv_adjust > 0) {
 		struct hstate *h = hstate_inode(inode);
 
-		hugetlb_acct_memory(h, 1);
+		if (!hugetlb_acct_memory(h, 1))
+			reserved = true;
+	} else if (!rsv_adjust) {
+		reserved = true;
 	}
+
+	if (!reserved)
+		pr_warn("hugetlb: Huge Page Reserved count may go negative.\n");
 }
 
 /*
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 203/240] ksm: fix potential missing rmap_item for stable_node
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (201 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 202/240] mm/hugeltb: handle the error case in hugetlb_fix_reserve_counts() Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 204/240] kernel: kexec_file: fix error return code of kexec_calculate_store_digests() Greg Kroah-Hartman
                   ` (41 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Miaohe Lin, Hugh Dickins,
	Andrew Morton, Linus Torvalds, Sasha Levin

From: Miaohe Lin <linmiaohe@huawei.com>

[ Upstream commit c89a384e2551c692a9fe60d093fd7080f50afc51 ]

When removing rmap_item from stable tree, STABLE_FLAG of rmap_item is
cleared with head reserved.  So the following scenario might happen: For
ksm page with rmap_item1:

cmp_and_merge_page
  stable_node->head = &migrate_nodes;
  remove_rmap_item_from_tree, but head still equal to stable_node;
  try_to_merge_with_ksm_page failed;
  return;

For the same ksm page with rmap_item2, stable node migration succeed this
time.  The stable_node->head does not equal to migrate_nodes now.  For ksm
page with rmap_item1 again:

cmp_and_merge_page
 stable_node->head != &migrate_nodes && rmap_item->head == stable_node
 return;

We would miss the rmap_item for stable_node and might result in failed
rmap_walk_ksm().  Fix this by set rmap_item->head to NULL when rmap_item
is removed from stable tree.

Link: https://lkml.kernel.org/r/20210330140228.45635-5-linmiaohe@huawei.com
Fixes: 4146d2d673e8 ("ksm: make !merge_across_nodes migration safe")
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 mm/ksm.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/ksm.c b/mm/ksm.c
index d6c81a5076a7..27ff68050d85 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -629,6 +629,7 @@ static void remove_rmap_item_from_tree(struct rmap_item *rmap_item)
 			ksm_pages_shared--;
 
 		put_anon_vma(rmap_item->anon_vma);
+		rmap_item->head = NULL;
 		rmap_item->address &= PAGE_MASK;
 
 	} else if (rmap_item->address & UNSTABLE_FLAG) {
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 204/240] kernel: kexec_file: fix error return code of kexec_calculate_store_digests()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (202 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 203/240] ksm: fix potential missing rmap_item for stable_node Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 205/240] ARC: entry: fix off-by-one error in syscall number validation Greg Kroah-Hartman
                   ` (40 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Jia-Ju Bai, TOTE Robot, Baoquan He,
	Andrew Morton, Linus Torvalds, Sasha Levin

From: Jia-Ju Bai <baijiaju1990@gmail.com>

[ Upstream commit 31d82c2c787d5cf65fedd35ebbc0c1bd95c1a679 ]

When vzalloc() returns NULL to sha_regions, no error return code of
kexec_calculate_store_digests() is assigned.  To fix this bug, ret is
assigned with -ENOMEM in this case.

Link: https://lkml.kernel.org/r/20210309083904.24321-1-baijiaju1990@gmail.com
Fixes: a43cac0d9dc2 ("kexec: split kexec_file syscall code to kexec_file.c")
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Acked-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 kernel/kexec_file.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c
index 037c321c5618..2edaed6803ff 100644
--- a/kernel/kexec_file.c
+++ b/kernel/kexec_file.c
@@ -528,8 +528,10 @@ static int kexec_calculate_store_digests(struct kimage *image)
 
 	sha_region_sz = KEXEC_SEGMENT_MAX * sizeof(struct kexec_sha_region);
 	sha_regions = vzalloc(sha_region_sz);
-	if (!sha_regions)
+	if (!sha_regions) {
+		ret = -ENOMEM;
 		goto out_free_desc;
+	}
 
 	desc->tfm   = tfm;
 	desc->flags = 0;
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 205/240] ARC: entry: fix off-by-one error in syscall number validation
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (203 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 204/240] kernel: kexec_file: fix error return code of kexec_calculate_store_digests() Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 206/240] powerpc/64s: Fix crashes when toggling entry flush barrier Greg Kroah-Hartman
                   ` (39 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Shahab Vahedi, Vineet Gupta

From: Vineet Gupta <vgupta@synopsys.com>

commit 3433adc8bd09fc9f29b8baddf33b4ecd1ecd2cdc upstream.

We have NR_syscall syscalls from [0 .. NR_syscall-1].
However the check for invalid syscall number is "> NR_syscall" as
opposed to >=. This off-by-one error erronesously allows "NR_syscall"
to be treated as valid syscall causeing out-of-bounds access into
syscall-call table ensuing a crash (holes within syscall table have a
invalid-entry handler but this is beyond the array implementing the
table).

This problem showed up on v5.6 kernel when testing glibc 2.33 (v5.10
kernel capable, includng faccessat2 syscall 439). The v5.6 kernel has
NR_syscalls=439 (0 to 438). Due to the bug, 439 passed by glibc was
not handled as -ENOSYS but processed leading to a crash.

Link: https://github.com/foss-for-synopsys-dwc-arc-processors/linux/issues/48
Reported-by: Shahab Vahedi <shahab@synopsys.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arc/kernel/entry.S |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/arc/kernel/entry.S
+++ b/arch/arc/kernel/entry.S
@@ -169,7 +169,7 @@ tracesys:
 
 	; Do the Sys Call as we normally would.
 	; Validate the Sys Call number
-	cmp     r8,  NR_syscalls
+	cmp     r8,  NR_syscalls - 1
 	mov.hi  r0, -ENOSYS
 	bhi     tracesys_exit
 
@@ -252,7 +252,7 @@ ENTRY(EV_Trap)
 	;============ Normal syscall case
 
 	; syscall num shd not exceed the total system calls avail
-	cmp     r8,  NR_syscalls
+	cmp     r8,  NR_syscalls - 1
 	mov.hi  r0, -ENOSYS
 	bhi     .Lret_from_system_call
 



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 206/240] powerpc/64s: Fix crashes when toggling entry flush barrier
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (204 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 205/240] ARC: entry: fix off-by-one error in syscall number validation Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 207/240] squashfs: fix divide error in calculate_skip() Greg Kroah-Hartman
                   ` (38 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Michael Ellerman

From: Michael Ellerman <mpe@ellerman.id.au>

commit aec86b052df6541cc97c5fca44e5934cbea4963b upstream.

The entry flush mitigation can be enabled/disabled at runtime via a
debugfs file (entry_flush), which causes the kernel to patch itself to
enable/disable the relevant mitigations.

However depending on which mitigation we're using, it may not be safe to
do that patching while other CPUs are active. For example the following
crash:

  sleeper[15639]: segfault (11) at c000000000004c20 nip c000000000004c20 lr c000000000004c20

Shows that we returned to userspace with a corrupted LR that points into
the kernel, due to executing the partially patched call to the fallback
entry flush (ie. we missed the LR restore).

Fix it by doing the patching under stop machine. The CPUs that aren't
doing the patching will be spinning in the core of the stop machine
logic. That is currently sufficient for our purposes, because none of
the patching we do is to that code or anywhere in the vicinity.

Fixes: f79643787e0a ("powerpc/64s: flush L1D on kernel entry")
Cc: stable@vger.kernel.org # v5.10+
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210506044959.1298123-2-mpe@ellerman.id.au
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/powerpc/lib/feature-fixups.c |   17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

--- a/arch/powerpc/lib/feature-fixups.c
+++ b/arch/powerpc/lib/feature-fixups.c
@@ -17,6 +17,7 @@
 #include <linux/kernel.h>
 #include <linux/string.h>
 #include <linux/init.h>
+#include <linux/stop_machine.h>
 #include <asm/cputable.h>
 #include <asm/code-patching.h>
 #include <asm/page.h>
@@ -282,8 +283,9 @@ void do_uaccess_flush_fixups(enum l1d_fl
 						: "unknown");
 }
 
-void do_entry_flush_fixups(enum l1d_flush_type types)
+static int __do_entry_flush_fixups(void *data)
 {
+	enum l1d_flush_type types = *(enum l1d_flush_type *)data;
 	unsigned int instrs[3], *dest;
 	long *start, *end;
 	int i;
@@ -334,6 +336,19 @@ void do_entry_flush_fixups(enum l1d_flus
 							: "ori type" :
 		(types &  L1D_FLUSH_MTTRIG)     ? "mttrig type"
 						: "unknown");
+
+	return 0;
+}
+
+void do_entry_flush_fixups(enum l1d_flush_type types)
+{
+	/*
+	 * The call to the fallback flush can not be safely patched in/out while
+	 * other CPUs are executing it. So call __do_entry_flush_fixups() on one
+	 * CPU while all other CPUs spin in the stop machine core with interrupts
+	 * hard disabled.
+	 */
+	stop_machine(__do_entry_flush_fixups, &types, NULL);
 }
 
 void do_rfi_flush_fixups(enum l1d_flush_type types)



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 207/240] squashfs: fix divide error in calculate_skip()
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (205 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 206/240] powerpc/64s: Fix crashes when toggling entry flush barrier Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 208/240] iio: proximity: pulsedlight: Fix rumtime PM imbalance on error Greg Kroah-Hartman
                   ` (37 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Phillip Lougher,
	syzbot+e8f781243ce16ac2f962, syzbot+7b98870d4fec9447b951,
	Andrew Morton, Linus Torvalds

From: Phillip Lougher <phillip@squashfs.org.uk>

commit d6e621de1fceb3b098ebf435ef7ea91ec4838a1a upstream.

Sysbot has reported a "divide error" which has been identified as being
caused by a corrupted file_size value within the file inode.  This value
has been corrupted to a much larger value than expected.

Calculate_skip() is passed i_size_read(inode) >> msblk->block_log.  Due to
the file_size value corruption this overflows the int argument/variable in
that function, leading to the divide error.

This patch changes the function to use u64.  This will accommodate any
unexpectedly large values due to corruption.

The value returned from calculate_skip() is clamped to be never more than
SQUASHFS_CACHED_BLKS - 1, or 7.  So file_size corruption does not lead to
an unexpectedly large return result here.

Link: https://lkml.kernel.org/r/20210507152618.9447-1-phillip@squashfs.org.uk
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
Reported-by: <syzbot+e8f781243ce16ac2f962@syzkaller.appspotmail.com>
Reported-by: <syzbot+7b98870d4fec9447b951@syzkaller.appspotmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/squashfs/file.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/fs/squashfs/file.c
+++ b/fs/squashfs/file.c
@@ -224,11 +224,11 @@ failure:
  * If the skip factor is limited in this way then the file will use multiple
  * slots.
  */
-static inline int calculate_skip(int blocks)
+static inline int calculate_skip(u64 blocks)
 {
-	int skip = blocks / ((SQUASHFS_META_ENTRIES + 1)
+	u64 skip = blocks / ((SQUASHFS_META_ENTRIES + 1)
 		 * SQUASHFS_META_INDEXES);
-	return min(SQUASHFS_CACHED_BLKS - 1, skip + 1);
+	return min((u64) SQUASHFS_CACHED_BLKS - 1, skip + 1);
 }
 
 



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 208/240] iio: proximity: pulsedlight: Fix rumtime PM imbalance on error
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (206 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 207/240] squashfs: fix divide error in calculate_skip() Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 209/240] usb: fotg210-hcd: Fix an error message Greg Kroah-Hartman
                   ` (36 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Dinghao Liu, Andy Shevchenko,
	Jonathan Cameron, Sasha Levin

From: Dinghao Liu <dinghao.liu@zju.edu.cn>

[ Upstream commit a2fa9242e89f27696515699fe0f0296bf1ac1815 ]

When lidar_write_control() fails, a pairing PM usage counter
decrement is needed to keep the counter balanced.

Fixes: 4ac4e086fd8c5 ("iio: pulsedlight-lidar-lite: add runtime PM")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210412053204.4889-1-dinghao.liu@zju.edu.cn
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/iio/proximity/pulsedlight-lidar-lite-v2.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
index 3141c3c161bb..46e969a3a9b7 100644
--- a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
+++ b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
@@ -166,6 +166,7 @@ static int lidar_get_measurement(struct lidar_data *data, u16 *reg)
 	ret = lidar_write_control(data, LIDAR_REG_CONTROL_ACQUIRE);
 	if (ret < 0) {
 		dev_err(&client->dev, "cannot send start measurement command");
+		pm_runtime_put_noidle(&client->dev);
 		return ret;
 	}
 
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 209/240] usb: fotg210-hcd: Fix an error message
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (207 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 208/240] iio: proximity: pulsedlight: Fix rumtime PM imbalance on error Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 210/240] ACPI: scan: Fix a memory leak in an error handling path Greg Kroah-Hartman
                   ` (35 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Christophe JAILLET, Sasha Levin

From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

[ Upstream commit a60a34366e0d09ca002c966dd7c43a68c28b1f82 ]

'retval' is known to be -ENODEV here.
This is a hard-coded default error code which is not useful in the error
message. Moreover, another error message is printed at the end of the
error handling path. The corresponding error code (-ENOMEM) is more
informative.

So remove simplify the first error message.

While at it, also remove the useless initialization of 'retval'.

Fixes: 7d50195f6c50 ("usb: host: Faraday fotg210-hcd driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/94531bcff98e46d4f9c20183a90b7f47f699126c.1620333419.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/host/fotg210-hcd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c
index 72853020a542..15249e664b89 100644
--- a/drivers/usb/host/fotg210-hcd.c
+++ b/drivers/usb/host/fotg210-hcd.c
@@ -5599,7 +5599,7 @@ static int fotg210_hcd_probe(struct platform_device *pdev)
 	struct usb_hcd *hcd;
 	struct resource *res;
 	int irq;
-	int retval = -ENODEV;
+	int retval;
 	struct fotg210_hcd *fotg210;
 
 	if (usb_disabled())
@@ -5619,7 +5619,7 @@ static int fotg210_hcd_probe(struct platform_device *pdev)
 	hcd = usb_create_hcd(&fotg210_fotg210_hc_driver, dev,
 			dev_name(dev));
 	if (!hcd) {
-		dev_err(dev, "failed to create hcd with err %d\n", retval);
+		dev_err(dev, "failed to create hcd\n");
 		retval = -ENOMEM;
 		goto fail_create_hcd;
 	}
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 210/240] ACPI: scan: Fix a memory leak in an error handling path
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (208 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 209/240] usb: fotg210-hcd: Fix an error message Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 211/240] usb: xhci: Increase timeout for HC halt Greg Kroah-Hartman
                   ` (34 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Christophe JAILLET, Andy Shevchenko,
	Rafael J. Wysocki, Sasha Levin

From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

[ Upstream commit 0c8bd174f0fc131bc9dfab35cd8784f59045da87 ]

If 'acpi_device_set_name()' fails, we must free
'acpi_device_bus_id->bus_id' or there is a (potential) memory leak.

Fixes: eb50aaf960e3 ("ACPI: scan: Use unique number for instance_no")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/acpi/scan.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index d749fe20fbfc..89ce7b14a166 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -704,6 +704,7 @@ int acpi_device_add(struct acpi_device *device,
 
 		result = acpi_device_set_name(device, acpi_device_bus_id);
 		if (result) {
+			kfree_const(acpi_device_bus_id->bus_id);
 			kfree(acpi_device_bus_id);
 			goto err_unlock;
 		}
-- 
2.30.2




^ permalink raw reply related	[flat|nested] 246+ messages in thread

* [PATCH 4.9 211/240] usb: xhci: Increase timeout for HC halt
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (209 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 210/240] ACPI: scan: Fix a memory leak in an error handling path Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 212/240] usb: dwc2: Fix gadget DMA unmap direction Greg Kroah-Hartman
                   ` (33 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Maximilian Luz, Mathias Nyman

From: Maximilian Luz <luzmaximilian@gmail.com>

commit ca09b1bea63ab83f4cca3a2ae8bc4f597ec28851 upstream.

On some devices (specifically the SC8180x based Surface Pro X with
QCOM04A6) HC halt / xhci_halt() times out during boot. Manually binding
the xhci-hcd driver at some point later does not exhibit this behavior.
To work around this, double XHCI_MAX_HALT_USEC, which also resolves this
issue.

Cc: <stable@vger.kernel.org>
Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20210512080816.866037-5-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/usb/host/xhci-ext-caps.h |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/usb/host/xhci-ext-caps.h
+++ b/drivers/usb/host/xhci-ext-caps.h
@@ -19,8 +19,9 @@
  * along with this program; if not, write to the Free Software Foundation,
  * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
-/* Up to 16 ms to halt an HC */
-#define XHCI_MAX_HALT_USEC	(16*1000)
+
+/* HC should halt within 16 ms, but use 32 ms as some hosts take longer */
+#define XHCI_MAX_HALT_USEC	(32 * 1000)
 /* HC not running - set to 1 when run/stop bit is cleared. */
 #define XHCI_STS_HALT		(1<<0)
 



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 212/240] usb: dwc2: Fix gadget DMA unmap direction
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (210 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 211/240] usb: xhci: Increase timeout for HC halt Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 213/240] usb: core: hub: fix race condition about TRSMRCY of resume Greg Kroah-Hartman
                   ` (32 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Minas Harutyunyan, Phil Elwell

From: Phil Elwell <phil@raspberrypi.com>

commit 75a41ce46bae6cbe7d3bb2584eb844291d642874 upstream.

The dwc2 gadget support maps and unmaps DMA buffers as necessary. When
mapping and unmapping it uses the direction of the endpoint to select
the direction of the DMA transfer, but this fails for Control OUT
transfers because the unmap occurs after the endpoint direction has
been reversed for the status phase.

A possible solution would be to unmap the buffer before the direction
is changed, but a safer, less invasive fix is to remember the buffer
direction independently of the endpoint direction.

Fixes: fe0b94abcdf6 ("usb: dwc2: gadget: manage ep0 state in software")
Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
Link: https://lore.kernel.org/r/20210506112200.2893922-1-phil@raspberrypi.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/usb/dwc2/core.h   |    2 ++
 drivers/usb/dwc2/gadget.c |    3 ++-
 2 files changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/usb/dwc2/core.h
+++ b/drivers/usb/dwc2/core.h
@@ -164,6 +164,7 @@ struct dwc2_hsotg_req;
  * @lock: State lock to protect contents of endpoint.
  * @dir_in: Set to true if this endpoint is of the IN direction, which
  *          means that it is sending data to the Host.
+ * @map_dir: Set to the value of dir_in when the DMA buffer is mapped.
  * @index: The index for the endpoint registers.
  * @mc: Multi Count - number of transactions per microframe
  * @interval - Interval for periodic endpoints, in frames or microframes.
@@ -207,6 +208,7 @@ struct dwc2_hsotg_ep {
 	unsigned short		fifo_index;
 
 	unsigned char           dir_in;
+	unsigned char           map_dir;
 	unsigned char           index;
 	unsigned char           mc;
 	u16                     interval;
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -308,7 +308,7 @@ static void dwc2_hsotg_unmap_dma(struct
 	if (hs_req->req.length == 0)
 		return;
 
-	usb_gadget_unmap_request(&hsotg->gadget, req, hs_ep->dir_in);
+	usb_gadget_unmap_request(&hsotg->gadget, req, hs_ep->map_dir);
 }
 
 /**
@@ -745,6 +745,7 @@ static int dwc2_hsotg_map_dma(struct dwc
 	if (hs_req->req.length == 0)
 		return 0;
 
+	hs_ep->map_dir = hs_ep->dir_in;
 	ret = usb_gadget_map_request(&hsotg->gadget, req, hs_ep->dir_in);
 	if (ret)
 		goto dma_error;



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 213/240] usb: core: hub: fix race condition about TRSMRCY of resume
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (211 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 212/240] usb: dwc2: Fix gadget DMA unmap direction Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 214/240] KVM: x86: Cancel pvclock_gtod_work on module removal Greg Kroah-Hartman
                   ` (31 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Tianping Fang, Alan Stern, Chunfeng Yun

From: Chunfeng Yun <chunfeng.yun@mediatek.com>

commit 975f94c7d6c306b833628baa9aec3f79db1eb3a1 upstream.

This may happen if the port becomes resume status exactly
when usb_port_resume() gets port status, it still need provide
a TRSMCRY time before access the device.

CC: <stable@vger.kernel.org>
Reported-by: Tianping Fang <tianping.fang@mediatek.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/20210512020738.52961-1-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/usb/core/hub.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -3486,9 +3486,6 @@ int usb_port_resume(struct usb_device *u
 		 * sequence.
 		 */
 		status = hub_port_status(hub, port1, &portstatus, &portchange);
-
-		/* TRSMRCY = 10 msec */
-		msleep(10);
 	}
 
  SuspendCleared:
@@ -3503,6 +3500,9 @@ int usb_port_resume(struct usb_device *u
 				usb_clear_port_feature(hub->hdev, port1,
 						USB_PORT_FEAT_C_SUSPEND);
 		}
+
+		/* TRSMRCY = 10 msec */
+		msleep(10);
 	}
 
 	if (udev->persist_enabled)



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 214/240] KVM: x86: Cancel pvclock_gtod_work on module removal
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (212 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 213/240] usb: core: hub: fix race condition about TRSMRCY of resume Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 215/240] FDDI: defxx: Make MMIO the configuration default except for EISA Greg Kroah-Hartman
                   ` (30 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel; +Cc: Greg Kroah-Hartman, stable, Thomas Gleixner, Paolo Bonzini

From: Thomas Gleixner <tglx@linutronix.de>

commit 594b27e677b35f9734b1969d175ebc6146741109 upstream.

Nothing prevents the following:

  pvclock_gtod_notify()
    queue_work(system_long_wq, &pvclock_gtod_work);
  ...
  remove_module(kvm);
  ...
  work_queue_run()
    pvclock_gtod_work()	<- UAF

Ditto for any other operation on that workqueue list head which touches
pvclock_gtod_work after module removal.

Cancel the work in kvm_arch_exit() to prevent that.

Fixes: 16e8d74d2da9 ("KVM: x86: notifier for clocksource changes")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Message-Id: <87czu4onry.ffs@nanos.tec.linutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/x86/kvm/x86.c |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -6268,6 +6268,7 @@ void kvm_arch_exit(void)
 	cpuhp_remove_state_nocalls(CPUHP_AP_X86_KVM_CLK_ONLINE);
 #ifdef CONFIG_X86_64
 	pvclock_gtod_unregister_notifier(&pvclock_gtod_notifier);
+	cancel_work_sync(&pvclock_gtod_work);
 #endif
 	kvm_x86_ops = NULL;
 	kvm_mmu_module_exit();



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 215/240] FDDI: defxx: Make MMIO the configuration default except for EISA
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (213 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 214/240] KVM: x86: Cancel pvclock_gtod_work on module removal Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 216/240] MIPS: Reinstate platform `__div64_32 handler Greg Kroah-Hartman
                   ` (29 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Maciej W. Rozycki, David S. Miller

From: Maciej W. Rozycki <macro@orcam.me.uk>

commit 193ced4a79599352d63cb8c9e2f0c6043106eb6a upstream.

Recent versions of the PCI Express specification have deprecated support
for I/O transactions and actually some PCIe host bridges, such as Power
Systems Host Bridge 4 (PHB4), do not implement them.

The default kernel configuration choice for the defxx driver is the use
of I/O ports rather than MMIO for PCI and EISA systems.  It may have
made sense as a conservative backwards compatible choice back when MMIO
operation support was added to the driver as a part of TURBOchannel bus
support.  However nowadays this configuration choice makes the driver
unusable with systems that do not implement I/O transactions for PCIe.

Make DEFXX_MMIO the configuration default then, except where configured
for EISA.  This exception is because an EISA adapter can have its MMIO
decoding disabled with ECU (EISA Configuration Utility) and therefore
not available with the resource allocation infrastructure we implement,
while port I/O is always readily available as it uses slot-specific
addressing, directly mapped to the slot an option card has been placed
in and handled with our EISA bus support core.  Conversely a kernel that
supports modern systems which may not have I/O transactions implemented
for PCIe will usually not be expected to handle legacy EISA systems.

The change of the default will make it easier for people, including but
not limited to distribution packagers, to make a working choice for the
driver.

Update the option description accordingly and while at it replace the
potentially ambiguous PIO acronym with IOP for "port I/O" vs "I/O ports"
according to our nomenclature used elsewhere.

Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Fixes: e89a2cfb7d7b ("[TC] defxx: TURBOchannel support")
Cc: stable@vger.kernel.org # v2.6.21+
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/fddi/Kconfig |   15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

--- a/drivers/net/fddi/Kconfig
+++ b/drivers/net/fddi/Kconfig
@@ -28,17 +28,20 @@ config DEFXX
 
 config DEFXX_MMIO
 	bool
-	prompt "Use MMIO instead of PIO" if PCI || EISA
+	prompt "Use MMIO instead of IOP" if PCI || EISA
 	depends on DEFXX
-	default n if PCI || EISA
+	default n if EISA
 	default y
 	---help---
 	  This instructs the driver to use EISA or PCI memory-mapped I/O
-	  (MMIO) as appropriate instead of programmed I/O ports (PIO).
+	  (MMIO) as appropriate instead of programmed I/O ports (IOP).
 	  Enabling this gives an improvement in processing time in parts
-	  of the driver, but it may cause problems with EISA (DEFEA)
-	  adapters.  TURBOchannel does not have the concept of I/O ports,
-	  so MMIO is always used for these (DEFTA) adapters.
+	  of the driver, but it requires a memory window to be configured
+	  for EISA (DEFEA) adapters that may not always be available.
+	  Conversely some PCIe host bridges do not support IOP, so MMIO
+	  may be required to access PCI (DEFPA) adapters on downstream PCI
+	  buses with some systems.  TURBOchannel does not have the concept
+	  of I/O ports, so MMIO is always used for these (DEFTA) adapters.
 
 	  If unsure, say N.
 



^ permalink raw reply	[flat|nested] 246+ messages in thread

* [PATCH 4.9 216/240] MIPS: Reinstate platform `__div64_32 handler
  2021-05-20  9:19 [PATCH 4.9 000/240] 4.9.269-rc1 review Greg Kroah-Hartman
                   ` (214 preceding siblings ...)
  2021-05-20  9:23 ` [PATCH 4.9 215/240] FDDI: defxx: Make MMIO the configuration default except for EISA Greg Kroah-Hartman
@ 2021-05-20  9:23 ` Greg Kroah-Hartman
  2021-05-20  9:23 ` [PATCH 4.9 217/240] MIPS: Avoid DIVU in `__div64_32 is result would be zero Greg Kroah-Hartman
                   ` (28 subsequent siblings)
  244 siblings, 0 replies; 246+ messages in thread
From: Greg Kroah-Hartman @ 2021-05-20  9:23 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Huacai Chen, Maciej W. Rozycki,
	Thomas Bogendoerfer

From: Maciej W. Rozycki <macro@orcam.me.uk>

commit c49f71f60754acbff37505e1d16ca796bf8a8140 upstream.

Our current MIPS platform `__div64_32' handler is inactive, because it
is incorrectly only enabled for 64-bit configurations, for which generic
`do_div' code does not call it anyway.

The handler is not suitable for being called from there though as it
only calculates 32 bits of the quotient under the assumption the 64-bit
divident has been suitably reduced.  Code for such reduction used to be
there, however it has been incorrectly removed with commit c21004cd5b4c
("MIPS: Rewrite <asm/div64.h> to work with gcc 4.4.0."), which should
have only updated an obsoleted constraint for an inline asm involving
$hi and $lo register outputs, while possibly wiring the original MIPS
variant of the `do_div' macro as `__div64_32' handler for the generic
`do_div' implementation

Correct the handler as follows then:

- Revert most of the commit referred, however retaining the current
  formatting, except for the final two instructions of the inline asm
  sequence, which the original commit missed.  Omit the original 64-bit
  parts though.

- Rename the original `do_div' macro to `__div64_32'.  Use the combined
  `x' constraint referring to the MD accumulator as a whole, replacing
  the original individual `h' and `l' constraints used for $hi and $lo
  registers respectively, of which `h' has been obsoleted with GCC 4.4.
  Update surrounding code accordingly.

  We have since removed support for GCC versions before 4.9, so no need
  for a special arrangement here; GCC has supported the `x' constraint
  since forever anyway, or at least going back to 1991.

- Rename the `__base' local variable in `__div64_32' to `__radix' to
  avoid a conflict with a local variable in `do_div'.

- Actually enable this code for 32-bit rather than 64-bit configurations
  by qualifying it with BITS_PER_LONG being 32 instead of 64.  Include
  <asm/bitsperlong.h> for this macro rather than <linux/types.h> as we
  don't need anything else.

- Finally include <asm-generic/div64.h> last rather than first.

This has passed correctness verification with test_div64 and reduced the
module's average execution time down to 1.0668s and 0.2629s from 2.1529s
and 0.5647s respectively for an R3400 CPU @40MHz and a 5Kc CPU @160MHz.
For a reference 64-bit `do_div' code where we have the DDIVU instruction
available to do the whole calculation right away averages at 0.0660s for
the latter CPU.

Fixes: c21004cd5b4c ("MIPS: Rewrite <asm/div64.h> to work with gcc 4.4.0.")
Reported-