[PATCH 5.10 000/102] 5.10.21-rc1 review

[PATCH 5.10 000/102] 5.10.21-rc1 review

[Greg Kroah-Hartman]

This is the start of the stable review cycle for the 5.10.21 release.
There are 102 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 Sun, 07 Mar 2021 12:08:39 +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/v5.x/stable-review/patch-5.10.21-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-5.10.y
and the diffstat can be found below.

thanks,

greg k-h

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

Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Linux 5.10.21-rc1

Takashi Iwai <tiwai@suse.de>
    ALSA: hda/realtek: Apply dual codec quirks for MSI Godlike X570 board

Werner Sembach <wse@tuxedocomputers.com>
    ALSA: hda/realtek: Add quirk for Intel NUC 10

Eckhart Mohr <e.mohr@tuxedocomputers.com>
    ALSA: hda/realtek: Add quirk for Clevo NH55RZQ

Sakari Ailus <sakari.ailus@linux.intel.com>
    media: v4l: ioctl: Fix memory leak in video_usercopy

Linus Torvalds <torvalds@linux-foundation.org>
    tty: teach the n_tty ICANON case about the new "cookie continuations" too

Linus Torvalds <torvalds@linux-foundation.org>
    tty: teach n_tty line discipline about the new "cookie continuations"

Linus Torvalds <torvalds@linux-foundation.org>
    tty: clean up legacy leftovers from n_tty line discipline

Linus Torvalds <torvalds@linux-foundation.org>
    tty: fix up hung_up_tty_read() conversion

Linus Torvalds <torvalds@linux-foundation.org>
    tty: fix up iterate_tty_read() EOVERFLOW handling

Ananth N Mavinakayanahalli <ananth@linux.ibm.com>
    powerpc/sstep: Fix incorrect return from analyze_instr()

Ananth N Mavinakayanahalli <ananth@linux.ibm.com>
    powerpc/sstep: Check instruction validity against ISA version before emulation

Jens Axboe <axboe@kernel.dk>
    swap: fix swapfile read/write offset

Souptick Joarder <jrdr.linux@gmail.com>
    remoteproc/mediatek: Fix kernel test robot warning

Rokudo Yan <wu-yan@tcl.com>
    zsmalloc: account the number of compacted pages correctly

Juergen Gross <jgross@suse.com>
    xen: fix p2m size in dom0 for disabled memory hotplug case

Jan Beulich <jbeulich@suse.com>
    xen-netback: respect gnttab_map_refs()'s return value

Jan Beulich <jbeulich@suse.com>
    Xen/gnttab: handle p2m update errors on a per-slot basis

Chris Leech <cleech@redhat.com>
    scsi: iscsi: Verify lengths on passthrough PDUs

Chris Leech <cleech@redhat.com>
    scsi: iscsi: Ensure sysfs attributes are limited to PAGE_SIZE

Lee Duncan <lduncan@suse.com>
    scsi: iscsi: Restrict sessions and handles to admin capabilities

Hans de Goede <hdegoede@redhat.com>
    ASoC: Intel: bytcr_rt5640: Add quirk for the Acer One S1002 tablet

Hans de Goede <hdegoede@redhat.com>
    ASoC: Intel: bytcr_rt5651: Add quirk for the Jumper EZpad 7 tablet

Hans de Goede <hdegoede@redhat.com>
    ASoC: Intel: bytcr_rt5640: Add quirk for the Voyo Winpad A15 tablet

Hans de Goede <hdegoede@redhat.com>
    ASoC: Intel: bytcr_rt5640: Add quirk for the Estar Beauty HD MID 7316R tablet

Juri Lelli <juri.lelli@redhat.com>
    sched/features: Fix hrtick reprogramming

John David Anglin <dave.anglin@bell.net>
    parisc: Bump 64-bit IRQ stack size to 64 KB

Rander Wang <rander.wang@intel.com>
    ASoC: Intel: sof_sdw: detect DMIC number based on mach params

Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
    ASoC: Intel: sof-sdw: indent and add quirks consistently

Jim Mattson <jmattson@google.com>
    perf/x86/kvm: Add Cascade Lake Xeon steppings to isolation_ucodes[]

Nirmoy Das <nirmoy.das@amd.com>
    drm/amdgpu: enable only one high prio compute queue

Josef Bacik <josef@toxicpanda.com>
    btrfs: fix error handling in commit_fs_roots

Hans de Goede <hdegoede@redhat.com>
    ASoC: Intel: Add DMI quirk table to soc_intel_is_byt_cr()

Chao Leng <lengchao@huawei.com>
    nvme-tcp: add clean action for failed reconnection

Chao Leng <lengchao@huawei.com>
    nvme-rdma: add clean action for failed reconnection

Chao Leng <lengchao@huawei.com>
    nvme-core: add cancel tagset helpers

Chao Yu <chao@kernel.org>
    f2fs: fix to set/clear I_LINKABLE under i_lock

Jaegeuk Kim <jaegeuk@kernel.org>
    f2fs: handle unallocated section and zone on pinned/atgc

Ricardo Ribalda <ribalda@chromium.org>
    media: uvcvideo: Allow entities with no pads

Jingwen Chen <Jingwen.Chen2@amd.com>
    drm/amd/amdgpu: add error handling to amdgpu_virt_read_pf2vf_data

Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
    drm/amd/display: Guard against NULL pointer deref when get_i2c_info fails

Hans de Goede <hdegoede@redhat.com>
    ASoC: Intel: bytcr_rt5640: Add new BYT_RT5640_NO_SPEAKERS quirk-flag

Nirmoy Das <nirmoy.das@amd.com>
    PCI: Add a REBAR size quirk for Sapphire RX 5600 XT Pulse

Defang Bo <bodefang@126.com>
    drm/amdgpu: Add check to prevent IH overflow

Jens Axboe <axboe@kernel.dk>
    fs: make unlazy_walk() error handling consistent

Ard Biesheuvel <ardb@kernel.org>
    crypto: tcrypt - avoid signed overflow in byte count

Tian Tao <tiantao6@hisilicon.com>
    drm/hisilicon: Fix use-after-free

Hans de Goede <hdegoede@redhat.com>
    brcmfmac: Add DMI nvram filename quirk for Voyo winpad A15 tablet

Hans de Goede <hdegoede@redhat.com>
    brcmfmac: Add DMI nvram filename quirk for Predia Basic tablet

Juerg Haefliger <juerg.haefliger@canonical.com>
    staging: bcm2835-audio: Replace unsafe strcpy() with strscpy()

Christian Gromm <christian.gromm@microchip.com>
    staging: most: sound: add sanity check for function argument

Gopal Tiwari <gtiwari@redhat.com>
    Bluetooth: Fix null pointer dereference in amp_read_loc_assoc_final_data

Hans de Goede <hdegoede@redhat.com>
    Bluetooth: Add new HCI_QUIRK_NO_SUSPEND_NOTIFIER quirk

Pali Rohár <pali@kernel.org>
    net: sfp: add mode quirk for GPON module Ubiquiti U-Fiber Instant

Miaoqing Pan <miaoqing@codeaurora.org>
    ath10k: fix wmi mgmt tx queue full due to race condition

Di Zhu <zhudi21@huawei.com>
    pktgen: fix misuse of BUG_ON() in pktgen_thread_worker()

Ryder Lee <ryder.lee@mediatek.com>
    mt76: mt7615: reset token when mac_reset happens

Vamshi K Sthambamkadi <vamshi.k.sthambamkadi@gmail.com>
    Bluetooth: btusb: fix memory leak on suspend and resume

Claire Chang <tientzu@chromium.org>
    Bluetooth: hci_h5: Set HCI_QUIRK_SIMULTANEOUS_DISCOVERY for btrtl

Tony Lindgren <tony@atomide.com>
    wlcore: Fix command execute failure 19 for wl12xx

Jiri Slaby <jirislaby@kernel.org>
    vt/consolemap: do font sum unsigned

Heiner Kallweit <hkallweit1@gmail.com>
    x86/reboot: Add Zotac ZBOX CI327 nano PCI reboot quirk

Dinghao Liu <dinghao.liu@zju.edu.cn>
    staging: fwserial: Fix error handling in fwserial_create

Borislav Petkov <bp@suse.de>
    EDAC/amd64: Do not load on family 0x15, model 0x13

Frederic Weisbecker <frederic@kernel.org>
    entry/kvm: Explicitly flush pending rcuog wakeup before last rescheduling point

Frederic Weisbecker <frederic@kernel.org>
    entry: Explicitly flush pending rcuog wakeup before last rescheduling point

Frederic Weisbecker <frederic@kernel.org>
    rcu/nocb: Trigger self-IPI on late deferred wake up before user resume

Marek Vasut <marex@denx.de>
    rsi: Move card interrupt handling to RX thread

Marek Vasut <marex@denx.de>
    rsi: Fix TX EAPOL packet handling against iwlwifi AP

Stephen Boyd <swboyd@chromium.org>
    ASoC: qcom: Remove useless debug print

Geert Uytterhoeven <geert+renesas@glider.be>
    dt-bindings: net: btusb: DT fix s/interrupt-name/interrupt-names/

Russell King <rmk+kernel@armlinux.org.uk>
    dt-bindings: ethernet-controller: fix fixed-link specification

Cong Wang <cong.wang@bytedance.com>
    net: fix dev_ifsioc_locked() race condition

Chris Mi <cmi@nvidia.com>
    net: psample: Fix netlink skb length with tunnel info

Marco Wenzel <marco.wenzel@a-eberle.de>
    net: hsr: add support for EntryForgetTime

DENG Qingfang <dqfext@gmail.com>
    net: ag71xx: remove unnecessary MTU reservation

Linus Walleij <linus.walleij@linaro.org>
    net: dsa: tag_rtl4_a: Support also egress tags

wenxu <wenxu@ucloud.cn>
    net/sched: cls_flower: Reject invalid ct_state flags rules

Vladimir Oltean <vladimir.oltean@nxp.com>
    net: bridge: use switchdev for port flags set through sysfs too

Paolo Abeni <pabeni@redhat.com>
    mptcp: do not wakeup listener for MPJ subflows

Eric Dumazet <edumazet@google.com>
    tcp: fix tcp_rmem documentation

Jack Wang <jinpu.wang@cloud.ionos.com>
    RDMA/rtrs-srv: Do not signal REG_MR

Jack Wang <jinpu.wang@cloud.ionos.com>
    RDMA/rtrs-clt: Use bitmask to check sess->flags

Jack Wang <jinpu.wang@cloud.ionos.com>
    RDMA/rtrs: Do not signal for heatbeat

Li Xinhai <lixinhai.lxh@gmail.com>
    mm/hugetlb.c: fix unnecessary address expansion of pmd sharing

Josef Bacik <josef@toxicpanda.com>
    nbd: handle device refs for DESTROY_ON_DISCONNECT properly

Alexandre Ghiti <alex@ghiti.fr>
    riscv: Get rid of MAX_EARLY_MAPPING_SIZE

Marco Elver <elver@google.com>
    net: fix up truesize of cloned skb in skb_prepare_for_shift()

Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
    tomoyo: ignore data race while checking quota

Sabyrzhan Tasbolatov <snovitoll@gmail.com>
    smackfs: restrict bytes count in smackfs write functions

Alexander Egorenkov <egorenar@linux.ibm.com>
    net/af_iucv: remove WARN_ONCE on malformed RX packets

Yumei Huang <yuhuang@redhat.com>
    xfs: Fix assert failure in xfs_setattr_size()

Hans Verkuil <hverkuil-cisco@xs4all.nl>
    media: v4l2-ctrls.c: fix shift-out-of-bounds in std_validate

Gao Xiang <hsiangkao@redhat.com>
    erofs: fix shift-out-of-bounds of blkszbits

Sean Young <sean@mess.org>
    media: mceusb: sanity check for prescaler value

Zqiang <qiang.zhang@windriver.com>
    udlfb: Fix memory leak in dlfb_usb_probe

Peter Zijlstra <peterz@infradead.org>
    sched/core: Allow try_invoke_on_locked_down_task() with irqs disabled

Randy Dunlap <rdunlap@infradead.org>
    JFS: more checks for invalid superblock

Fangrui Song <maskray@google.com>
    x86/build: Treat R_386_PLT32 relocation as R_386_PC32

Sergey Senozhatsky <senozhatsky@chromium.org>
    drm/virtio: use kvmalloc for large allocations

Jingle Wu <jingle.wu@emc.com.tw>
    Input: elan_i2c - add new trackpoint report type 0x5F

jingle.wu <jingle.wu@emc.com.tw>
    Input: elantech - fix protocol errors for some trackpoints in SMBus mode

Lech Perczak <lech.perczak@gmail.com>
    net: usb: qmi_wwan: support ZTE P685M modem


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

Diffstat:

 Documentation/devicetree/bindings/net/btusb.txt    |   2 +-
 .../bindings/net/ethernet-controller.yaml          |   5 +
 Documentation/networking/ip-sysctl.rst             |   7 +-
 Makefile                                           |   4 +-
 arch/arm/xen/p2m.c                                 |  35 ++++-
 arch/parisc/kernel/irq.c                           |   4 +
 arch/powerpc/lib/sstep.c                           |  79 +++++++++--
 arch/riscv/mm/init.c                               |  21 +--
 arch/x86/events/intel/core.c                       |   3 +
 arch/x86/include/asm/xen/page.h                    |  12 ++
 arch/x86/kernel/module.c                           |   1 +
 arch/x86/kernel/reboot.c                           |   9 ++
 arch/x86/kvm/x86.c                                 |   1 +
 arch/x86/tools/relocs.c                            |  12 +-
 arch/x86/xen/p2m.c                                 |  54 +++++++-
 arch/x86/xen/setup.c                               |  25 +---
 crypto/tcrypt.c                                    |  20 +--
 drivers/block/nbd.c                                |  32 +++--
 drivers/block/zram/zram_drv.c                      |   2 +-
 drivers/bluetooth/hci_h5.c                         |   5 +
 drivers/edac/amd64_edac.c                          |  10 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c            |  15 ++-
 drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h            |   2 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c           |   6 +-
 drivers/gpu/drm/amd/amdgpu/cz_ih.c                 |  37 ++++--
 drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c             |   6 +-
 drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c              |   6 +-
 drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c              |   7 +-
 drivers/gpu/drm/amd/amdgpu/iceland_ih.c            |  36 +++--
 drivers/gpu/drm/amd/amdgpu/tonga_ih.c              |  37 ++++--
 drivers/gpu/drm/amd/display/dc/core/dc_link.c      |   5 +
 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c    |   1 -
 drivers/gpu/drm/virtio/virtgpu_object.c            |   5 +-
 drivers/infiniband/ulp/rtrs/rtrs-clt.c             |  15 +--
 drivers/infiniband/ulp/rtrs/rtrs-srv.c             |   3 +-
 drivers/infiniband/ulp/rtrs/rtrs.c                 |   4 +-
 drivers/input/mouse/elan_i2c.h                     |  16 +++
 drivers/input/mouse/elan_i2c_core.c                |  13 +-
 drivers/input/mouse/elan_i2c_smbus.c               |   8 +-
 drivers/input/mouse/elantech.c                     |  99 +++++++++++++-
 drivers/input/mouse/elantech.h                     |   4 +
 drivers/media/rc/mceusb.c                          |   9 +-
 drivers/media/usb/uvc/uvc_driver.c                 |   7 +-
 drivers/media/v4l2-core/v4l2-ctrls.c               |   3 +-
 drivers/media/v4l2-core/v4l2-ioctl.c               |  19 +--
 drivers/net/ethernet/atheros/ag71xx.c              |   4 +-
 drivers/net/phy/sfp-bus.c                          |  15 +++
 drivers/net/phy/sfp.c                              |  17 ++-
 drivers/net/tap.c                                  |   7 +-
 drivers/net/tun.c                                  |   5 +-
 drivers/net/usb/qmi_wwan.c                         |   1 +
 drivers/net/wireless/ath/ath10k/mac.c              |  15 +--
 .../net/wireless/broadcom/brcm80211/brcmfmac/dmi.c |  32 +++++
 drivers/net/wireless/mediatek/mt76/mt7615/mac.c    |  20 +++
 drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h |   2 +-
 .../net/wireless/mediatek/mt76/mt7615/pci_init.c   |  12 +-
 drivers/net/wireless/rsi/rsi_91x_hal.c             |   3 +-
 drivers/net/wireless/rsi/rsi_91x_sdio.c            |   6 +-
 drivers/net/wireless/rsi/rsi_91x_sdio_ops.c        |  52 ++------
 drivers/net/wireless/rsi/rsi_sdio.h                |   8 +-
 drivers/net/wireless/ti/wl12xx/main.c              |   3 -
 drivers/net/wireless/ti/wlcore/main.c              |  15 +--
 drivers/net/wireless/ti/wlcore/wlcore.h            |   3 -
 drivers/net/xen-netback/netback.c                  |  12 +-
 drivers/nvme/host/core.c                           |  20 +++
 drivers/nvme/host/nvme.h                           |   2 +
 drivers/nvme/host/rdma.c                           |  18 ++-
 drivers/nvme/host/tcp.c                            |  18 ++-
 drivers/pci/pci.c                                  |   9 +-
 drivers/remoteproc/mtk_scp.c                       |   4 +-
 drivers/scsi/libiscsi.c                            | 148 ++++++++++-----------
 drivers/scsi/scsi_transport_iscsi.c                |  40 ++++--
 drivers/staging/fwserial/fwserial.c                |   2 +
 drivers/staging/most/sound/sound.c                 |   2 +
 .../vc04_services/bcm2835-audio/bcm2835-ctl.c      |   6 +-
 .../vc04_services/bcm2835-audio/bcm2835-pcm.c      |   2 +-
 .../staging/vc04_services/bcm2835-audio/bcm2835.c  |   6 +-
 drivers/tty/n_tty.c                                |  87 ++++++++----
 drivers/tty/tty_io.c                               |  28 ++--
 drivers/tty/vt/consolemap.c                        |   2 +-
 drivers/video/fbdev/udlfb.c                        |   1 +
 fs/btrfs/transaction.c                             |  11 +-
 fs/erofs/super.c                                   |   4 +-
 fs/f2fs/namei.c                                    |   8 ++
 fs/f2fs/segment.h                                  |   4 +-
 fs/jfs/jfs_filsys.h                                |   1 +
 fs/jfs/jfs_mount.c                                 |  10 ++
 fs/namei.c                                         |  43 +++---
 fs/xfs/xfs_iops.c                                  |   2 +-
 include/linux/entry-kvm.h                          |  14 ++
 include/linux/netdevice.h                          |   3 +
 include/linux/swap.h                               |   1 +
 include/linux/zsmalloc.h                           |   2 +-
 include/net/bluetooth/hci.h                        |   8 ++
 include/uapi/linux/pkt_cls.h                       |   2 +
 kernel/entry/common.c                              |   7 +
 kernel/rcu/tree.c                                  |  57 +++++++-
 kernel/rcu/tree.h                                  |   2 +-
 kernel/rcu/tree_plugin.h                           |  26 ++--
 kernel/sched/core.c                                |  17 +--
 kernel/sched/sched.h                               |   1 +
 mm/hugetlb.c                                       |  22 +--
 mm/page_io.c                                       |   5 -
 mm/swapfile.c                                      |  13 ++
 mm/zsmalloc.c                                      |  17 ++-
 net/bluetooth/amp.c                                |   3 +
 net/bluetooth/hci_core.c                           |  21 +--
 net/bridge/br_sysfs_if.c                           |   9 +-
 net/core/dev.c                                     |  42 ++++++
 net/core/dev_ioctl.c                               |  20 +--
 net/core/pktgen.c                                  |   2 +-
 net/core/rtnetlink.c                               |   2 +-
 net/core/skbuff.c                                  |  14 +-
 net/dsa/tag_rtl4_a.c                               |  43 ++++--
 net/hsr/hsr_framereg.c                             |   9 +-
 net/hsr/hsr_framereg.h                             |   1 +
 net/hsr/hsr_main.h                                 |   1 +
 net/iucv/af_iucv.c                                 |   1 -
 net/mptcp/subflow.c                                |   6 +
 net/psample/psample.c                              |   4 +-
 net/sched/cls_flower.c                             |  39 +++++-
 security/smack/smackfs.c                           |  21 ++-
 security/tomoyo/file.c                             |  16 +--
 security/tomoyo/network.c                          |   8 +-
 security/tomoyo/util.c                             |  24 ++--
 sound/pci/hda/patch_realtek.c                      |  13 ++
 sound/soc/intel/boards/bytcr_rt5640.c              |  63 ++++++++-
 sound/soc/intel/boards/bytcr_rt5651.c              |  13 ++
 sound/soc/intel/boards/sof_sdw.c                   |  15 ++-
 sound/soc/intel/common/soc-intel-quirks.h          |  25 ++++
 sound/soc/qcom/lpass-cpu.c                         |   1 -
 131 files changed, 1404 insertions(+), 625 deletions(-)

[PATCH 5.10 001/102] net: usb: qmi_wwan: support ZTE P685M modem

[Greg Kroah-Hartman]

From: Lech Perczak <lech.perczak@gmail.com>

commit 88eee9b7b42e69fb622ddb3ff6f37e8e4347f5b2 upstream.

Now that interface 3 in "option" driver is no longer mapped, add device
ID matching it to qmi_wwan.

The modem is used inside ZTE MF283+ router and carriers identify it as
such.
Interface mapping is:
0: QCDM, 1: AT (PCUI), 2: AT (Modem), 3: QMI, 4: ADB

T:  Bus=02 Lev=02 Prnt=02 Port=05 Cnt=01 Dev#=  3 Spd=480  MxCh= 0
D:  Ver= 2.01 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=19d2 ProdID=1275 Rev=f0.00
S:  Manufacturer=ZTE,Incorporated
S:  Product=ZTE Technologies MSM
S:  SerialNumber=P685M510ZTED0000CP&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&0
C:* #Ifs= 5 Cfg#= 1 Atr=a0 MxPwr=500mA
I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
E:  Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
E:  Ad=83(I) Atr=03(Int.) MxPS=  10 Ivl=32ms
E:  Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
E:  Ad=85(I) Atr=03(Int.) MxPS=  10 Ivl=32ms
E:  Ad=84(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan
E:  Ad=87(I) Atr=03(Int.) MxPS=   8 Ivl=32ms
E:  Ad=86(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 4 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=42 Prot=01 Driver=(none)
E:  Ad=88(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=05(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms

Acked-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
Link: https://lore.kernel.org/r/20210223183456.6377-1-lech.perczak@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/usb/qmi_wwan.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/net/usb/qmi_wwan.c
+++ b/drivers/net/usb/qmi_wwan.c
@@ -1258,6 +1258,7 @@ static const struct usb_device_id produc
 	{QMI_FIXED_INTF(0x19d2, 0x1255, 4)},
 	{QMI_FIXED_INTF(0x19d2, 0x1256, 4)},
 	{QMI_FIXED_INTF(0x19d2, 0x1270, 5)},	/* ZTE MF667 */
+	{QMI_FIXED_INTF(0x19d2, 0x1275, 3)},	/* ZTE P685M */
 	{QMI_FIXED_INTF(0x19d2, 0x1401, 2)},
 	{QMI_FIXED_INTF(0x19d2, 0x1402, 2)},	/* ZTE MF60 */
 	{QMI_FIXED_INTF(0x19d2, 0x1424, 2)},

[PATCH 5.10 002/102] Input: elantech - fix protocol errors for some trackpoints in SMBus mode

[Greg Kroah-Hartman]

From: jingle.wu <jingle.wu@emc.com.tw>

commit e4c9062717feda88900b566463228d1c4910af6d upstream.

There are some version of Elan trackpads that send incorrect data when
in SMbus mode, unless they are switched to use 0x5f reports instead of
standard 0x5e. This patch implements querying device to retrieve chips
identifying data, and switching it, when needed to the alternative
report.

Signed-off-by: Jingle Wu <jingle.wu@emc.com.tw>
Link: https://lore.kernel.org/r/20201211071531.32413-1-jingle.wu@emc.com.tw
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/input/mouse/elantech.c |   99 ++++++++++++++++++++++++++++++++++++++++-
 drivers/input/mouse/elantech.h |    4 +
 2 files changed, 101 insertions(+), 2 deletions(-)

--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -90,6 +90,47 @@ static int elantech_ps2_command(struct p
 }
 
 /*
+ * Send an Elantech style special command to read 3 bytes from a register
+ */
+static int elantech_read_reg_params(struct psmouse *psmouse, u8 reg, u8 *param)
+{
+	if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
+	    elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) ||
+	    elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
+	    elantech_ps2_command(psmouse, NULL, reg) ||
+	    elantech_ps2_command(psmouse, param, PSMOUSE_CMD_GETINFO)) {
+		psmouse_err(psmouse,
+			    "failed to read register %#02x\n", reg);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+/*
+ * Send an Elantech style special command to write a register with a parameter
+ */
+static int elantech_write_reg_params(struct psmouse *psmouse, u8 reg, u8 *param)
+{
+	if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
+	    elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) ||
+	    elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
+	    elantech_ps2_command(psmouse, NULL, reg) ||
+	    elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
+	    elantech_ps2_command(psmouse, NULL, param[0]) ||
+	    elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
+	    elantech_ps2_command(psmouse, NULL, param[1]) ||
+	    elantech_ps2_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11)) {
+		psmouse_err(psmouse,
+			    "failed to write register %#02x with value %#02x%#02x\n",
+			    reg, param[0], param[1]);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+/*
  * Send an Elantech style special command to read a value from a register
  */
 static int elantech_read_reg(struct psmouse *psmouse, unsigned char reg,
@@ -1530,18 +1571,34 @@ static const struct dmi_system_id no_hw_
 };
 
 /*
+ * Change Report id 0x5E to 0x5F.
+ */
+static int elantech_change_report_id(struct psmouse *psmouse)
+{
+	unsigned char param[2] = { 0x10, 0x03 };
+
+	if (elantech_write_reg_params(psmouse, 0x7, param) ||
+	    elantech_read_reg_params(psmouse, 0x7, param) ||
+	    param[0] != 0x10 || param[1] != 0x03) {
+		psmouse_err(psmouse, "Unable to change report ID to 0x5f.\n");
+		return -EIO;
+	}
+
+	return 0;
+}
+/*
  * determine hardware version and set some properties according to it.
  */
 static int elantech_set_properties(struct elantech_device_info *info)
 {
 	/* This represents the version of IC body. */
-	int ver = (info->fw_version & 0x0f0000) >> 16;
+	info->ic_version = (info->fw_version & 0x0f0000) >> 16;
 
 	/* Early version of Elan touchpads doesn't obey the rule. */
 	if (info->fw_version < 0x020030 || info->fw_version == 0x020600)
 		info->hw_version = 1;
 	else {
-		switch (ver) {
+		switch (info->ic_version) {
 		case 2:
 		case 4:
 			info->hw_version = 2;
@@ -1557,6 +1614,11 @@ static int elantech_set_properties(struc
 		}
 	}
 
+	/* Get information pattern for hw_version 4 */
+	info->pattern = 0x00;
+	if (info->ic_version == 0x0f && (info->fw_version & 0xff) <= 0x02)
+		info->pattern = info->fw_version & 0xff;
+
 	/* decide which send_cmd we're gonna use early */
 	info->send_cmd = info->hw_version >= 3 ? elantech_send_cmd :
 						 synaptics_send_cmd;
@@ -1598,6 +1660,7 @@ static int elantech_query_info(struct ps
 {
 	unsigned char param[3];
 	unsigned char traces;
+	unsigned char ic_body[3];
 
 	memset(info, 0, sizeof(*info));
 
@@ -1640,6 +1703,21 @@ static int elantech_query_info(struct ps
 			     info->samples[2]);
 	}
 
+	if (info->pattern > 0x00 && info->ic_version == 0xf) {
+		if (info->send_cmd(psmouse, ETP_ICBODY_QUERY, ic_body)) {
+			psmouse_err(psmouse, "failed to query ic body\n");
+			return -EINVAL;
+		}
+		info->ic_version = be16_to_cpup((__be16 *)ic_body);
+		psmouse_info(psmouse,
+			     "Elan ic body: %#04x, current fw version: %#02x\n",
+			     info->ic_version, ic_body[2]);
+	}
+
+	info->product_id = be16_to_cpup((__be16 *)info->samples);
+	if (info->pattern == 0x00)
+		info->product_id &= 0xff;
+
 	if (info->samples[1] == 0x74 && info->hw_version == 0x03) {
 		/*
 		 * This module has a bug which makes absolute mode
@@ -1654,6 +1732,23 @@ static int elantech_query_info(struct ps
 	/* The MSB indicates the presence of the trackpoint */
 	info->has_trackpoint = (info->capabilities[0] & 0x80) == 0x80;
 
+	if (info->has_trackpoint && info->ic_version == 0x0011 &&
+	    (info->product_id == 0x08 || info->product_id == 0x09 ||
+	     info->product_id == 0x0d || info->product_id == 0x0e)) {
+		/*
+		 * This module has a bug which makes trackpoint in SMBus
+		 * mode return invalid data unless trackpoint is switched
+		 * from using 0x5e reports to 0x5f. If we are not able to
+		 * make the switch, let's abort initialization so we'll be
+		 * using standard PS/2 protocol.
+		 */
+		if (elantech_change_report_id(psmouse)) {
+			psmouse_info(psmouse,
+				     "Trackpoint report is broken, forcing standard PS/2 protocol\n");
+			return -ENODEV;
+		}
+	}
+
 	info->x_res = 31;
 	info->y_res = 31;
 	if (info->hw_version == 4) {
--- a/drivers/input/mouse/elantech.h
+++ b/drivers/input/mouse/elantech.h
@@ -18,6 +18,7 @@
 #define ETP_CAPABILITIES_QUERY		0x02
 #define ETP_SAMPLE_QUERY		0x03
 #define ETP_RESOLUTION_QUERY		0x04
+#define ETP_ICBODY_QUERY		0x05
 
 /*
  * Command values for register reading or writing
@@ -140,7 +141,10 @@ struct elantech_device_info {
 	unsigned char samples[3];
 	unsigned char debug;
 	unsigned char hw_version;
+	unsigned char pattern;
 	unsigned int fw_version;
+	unsigned int ic_version;
+	unsigned int product_id;
 	unsigned int x_min;
 	unsigned int y_min;
 	unsigned int x_max;

[PATCH 5.10 003/102] Input: elan_i2c - add new trackpoint report type 0x5F

[Greg Kroah-Hartman]

From: Jingle Wu <jingle.wu@emc.com.tw>

commit 056115daede8d01f71732bc7d778fb85acee8eb6 upstream.

The 0x5F is a new trackpoint report type used by some modules.

Signed-off-by: Jingle Wu <jingle.wu@emc.com.tw>
Link: https://lore.kernel.org/r/20201211071511.32349-1-jingle.wu@emc.com.tw
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Nikolai Kostrigin <nickel@basealt.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/input/mouse/elan_i2c.h       |   16 ++++++++++++++++
 drivers/input/mouse/elan_i2c_core.c  |   13 +------------
 drivers/input/mouse/elan_i2c_smbus.c |    8 ++++++--
 3 files changed, 23 insertions(+), 14 deletions(-)

--- a/drivers/input/mouse/elan_i2c.h
+++ b/drivers/input/mouse/elan_i2c.h
@@ -28,6 +28,22 @@
 
 #define ETP_FEATURE_REPORT_MK	BIT(0)
 
+#define ETP_REPORT_ID		0x5D
+#define ETP_TP_REPORT_ID	0x5E
+#define ETP_TP_REPORT_ID2	0x5F
+#define ETP_REPORT_ID2		0x60	/* High precision report */
+
+#define ETP_REPORT_ID_OFFSET	2
+#define ETP_TOUCH_INFO_OFFSET	3
+#define ETP_FINGER_DATA_OFFSET	4
+#define ETP_HOVER_INFO_OFFSET	30
+#define ETP_MK_DATA_OFFSET	33	/* For high precision reports */
+
+#define ETP_MAX_REPORT_LEN	39
+
+#define ETP_MAX_FINGERS		5
+#define ETP_FINGER_DATA_LEN	5
+
 /* IAP Firmware handling */
 #define ETP_PRODUCT_ID_FORMAT_STRING	"%d.0"
 #define ETP_FW_NAME		"elan_i2c_" ETP_PRODUCT_ID_FORMAT_STRING ".bin"
--- a/drivers/input/mouse/elan_i2c_core.c
+++ b/drivers/input/mouse/elan_i2c_core.c
@@ -47,18 +47,6 @@
 #define ETP_FINGER_WIDTH	15
 #define ETP_RETRY_COUNT		3
 
-#define ETP_MAX_FINGERS		5
-#define ETP_FINGER_DATA_LEN	5
-#define ETP_REPORT_ID		0x5D
-#define ETP_REPORT_ID2		0x60	/* High precision report */
-#define ETP_TP_REPORT_ID	0x5E
-#define ETP_REPORT_ID_OFFSET	2
-#define ETP_TOUCH_INFO_OFFSET	3
-#define ETP_FINGER_DATA_OFFSET	4
-#define ETP_HOVER_INFO_OFFSET	30
-#define ETP_MK_DATA_OFFSET	33	/* For high precision reports */
-#define ETP_MAX_REPORT_LEN	39
-
 /* The main device structure */
 struct elan_tp_data {
 	struct i2c_client	*client;
@@ -1076,6 +1064,7 @@ static irqreturn_t elan_isr(int irq, voi
 		elan_report_absolute(data, report, true);
 		break;
 	case ETP_TP_REPORT_ID:
+	case ETP_TP_REPORT_ID2:
 		elan_report_trackpoint(data, report);
 		break;
 	default:
--- a/drivers/input/mouse/elan_i2c_smbus.c
+++ b/drivers/input/mouse/elan_i2c_smbus.c
@@ -45,6 +45,7 @@
 #define ETP_SMBUS_CALIBRATE_QUERY	0xC5
 
 #define ETP_SMBUS_REPORT_LEN		32
+#define ETP_SMBUS_REPORT_LEN2		7
 #define ETP_SMBUS_REPORT_OFFSET		2
 #define ETP_SMBUS_HELLOPACKET_LEN	5
 #define ETP_SMBUS_IAP_PASSWORD		0x1234
@@ -497,10 +498,13 @@ static int elan_smbus_get_report(struct
 		return len;
 	}
 
-	if (len != ETP_SMBUS_REPORT_LEN) {
+	if (report[ETP_REPORT_ID_OFFSET] == ETP_TP_REPORT_ID2)
+		report_len = ETP_SMBUS_REPORT_LEN2;
+
+	if (len != report_len) {
 		dev_err(&client->dev,
 			"wrong report length (%d vs %d expected)\n",
-			len, ETP_SMBUS_REPORT_LEN);
+			len, report_len);
 		return -EIO;
 	}
 

[PATCH 5.10 004/102] drm/virtio: use kvmalloc for large allocations

[Greg Kroah-Hartman]

From: Sergey Senozhatsky <senozhatsky@chromium.org>

commit ea86f3defd55f141a44146e66cbf8ffb683d60da upstream.

We observed that some of virtio_gpu_object_shmem_init() allocations
can be rather costly - order 6 - which can be difficult to fulfill
under memory pressure conditions. Switch to kvmalloc_array() in
virtio_gpu_object_shmem_init() and let the kernel vmalloc the entries
array.

Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20201105014744.1662226-1-senozhatsky@chromium.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Doug Horn <doughorn@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/virtio/virtgpu_object.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/virtio/virtgpu_object.c
+++ b/drivers/gpu/drm/virtio/virtgpu_object.c
@@ -172,8 +172,9 @@ static int virtio_gpu_object_shmem_init(
 		*nents = shmem->pages->orig_nents;
 	}
 
-	*ents = kmalloc_array(*nents, sizeof(struct virtio_gpu_mem_entry),
-			      GFP_KERNEL);
+	*ents = kvmalloc_array(*nents,
+			       sizeof(struct virtio_gpu_mem_entry),
+			       GFP_KERNEL);
 	if (!(*ents)) {
 		DRM_ERROR("failed to allocate ent list\n");
 		return -ENOMEM;

[PATCH 5.10 005/102] x86/build: Treat R_386_PLT32 relocation as R_386_PC32

[Greg Kroah-Hartman]

From: Fangrui Song <maskray@google.com>

commit bb73d07148c405c293e576b40af37737faf23a6a upstream.

This is similar to commit

  b21ebf2fb4cd ("x86: Treat R_X86_64_PLT32 as R_X86_64_PC32")

but for i386. As far as the kernel is concerned, R_386_PLT32 can be
treated the same as R_386_PC32.

R_386_PLT32/R_X86_64_PLT32 are PC-relative relocation types which
can only be used by branches. If the referenced symbol is defined
externally, a PLT will be used.

R_386_PC32/R_X86_64_PC32 are PC-relative relocation types which can be
used by address taking operations and branches. If the referenced symbol
is defined externally, a copy relocation/canonical PLT entry will be
created in the executable.

On x86-64, there is no PIC vs non-PIC PLT distinction and an
R_X86_64_PLT32 relocation is produced for both `call/jmp foo` and
`call/jmp foo@PLT` with newer (2018) GNU as/LLVM integrated assembler.
This avoids canonical PLT entries (st_shndx=0, st_value!=0).

On i386, there are 2 types of PLTs, PIC and non-PIC. Currently,
the GCC/GNU as convention is to use R_386_PC32 for non-PIC PLT and
R_386_PLT32 for PIC PLT. Copy relocations/canonical PLT entries
are possible ABI issues but GCC/GNU as will likely keep the status
quo because (1) the ABI is legacy (2) the change will drop a GNU
ld diagnostic for non-default visibility ifunc in shared objects.

clang-12 -fno-pic (since [1]) can emit R_386_PLT32 for compiler
generated function declarations, because preventing canonical PLT
entries is weighed over the rare ifunc diagnostic.

Further info for the more interested:

  https://github.com/ClangBuiltLinux/linux/issues/1210
  https://sourceware.org/bugzilla/show_bug.cgi?id=27169
  https://github.com/llvm/llvm-project/commit/a084c0388e2a59b9556f2de0083333232da3f1d6 [1]

 [ bp: Massage commit message. ]

Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Fangrui Song <maskray@google.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nathan Chancellor <natechancellor@gmail.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Link: https://lkml.kernel.org/r/20210127205600.1227437-1-maskray@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/x86/kernel/module.c |    1 +
 arch/x86/tools/relocs.c  |   12 ++++++++----
 2 files changed, 9 insertions(+), 4 deletions(-)

--- a/arch/x86/kernel/module.c
+++ b/arch/x86/kernel/module.c
@@ -114,6 +114,7 @@ int apply_relocate(Elf32_Shdr *sechdrs,
 			*location += sym->st_value;
 			break;
 		case R_386_PC32:
+		case R_386_PLT32:
 			/* Add the value, subtract its position */
 			*location += sym->st_value - (uint32_t)location;
 			break;
--- a/arch/x86/tools/relocs.c
+++ b/arch/x86/tools/relocs.c
@@ -867,9 +867,11 @@ static int do_reloc32(struct section *se
 	case R_386_PC32:
 	case R_386_PC16:
 	case R_386_PC8:
+	case R_386_PLT32:
 		/*
-		 * NONE can be ignored and PC relative relocations don't
-		 * need to be adjusted.
+		 * NONE can be ignored and PC relative relocations don't need
+		 * to be adjusted. Because sym must be defined, R_386_PLT32 can
+		 * be treated the same way as R_386_PC32.
 		 */
 		break;
 
@@ -910,9 +912,11 @@ static int do_reloc_real(struct section
 	case R_386_PC32:
 	case R_386_PC16:
 	case R_386_PC8:
+	case R_386_PLT32:
 		/*
-		 * NONE can be ignored and PC relative relocations don't
-		 * need to be adjusted.
+		 * NONE can be ignored and PC relative relocations don't need
+		 * to be adjusted. Because sym must be defined, R_386_PLT32 can
+		 * be treated the same way as R_386_PC32.
 		 */
 		break;
 

[PATCH 5.10 006/102] JFS: more checks for invalid superblock

[Greg Kroah-Hartman]

From: Randy Dunlap <rdunlap@infradead.org>

commit 3bef198f1b17d1bb89260bad947ef084c0a2d1a6 upstream.

syzbot is feeding invalid superblock data to JFS for mount testing.
JFS does not check several of the fields -- just assumes that they
are good since the JFS_MAGIC and version fields are good.

In this case (syzbot reproducer), we have s_l2bsize == 0xda0c,
pad == 0xf045, and s_state == 0x50, all of which are invalid IMO.
Having s_l2bsize == 0xda0c causes this UBSAN warning:
  UBSAN: shift-out-of-bounds in fs/jfs/jfs_mount.c:373:25
  shift exponent -9716 is negative

s_l2bsize can be tested for correctness. pad can be tested for non-0
and punted. s_state can be tested for its valid values and punted.

Do those 3 tests and if any of them fails, report the superblock as
invalid/corrupt and let fsck handle it.

With this patch, chkSuper() says this when JFS_DEBUG is enabled:
  jfs_mount: Mount Failure: superblock is corrupt!
  Mount JFS Failure: -22
  jfs_mount failed w/return code = -22

The obvious problem with this method is that next week there could
be another syzbot test that uses different fields for invalid values,
this making this like a game of whack-a-mole.

syzkaller link: https://syzkaller.appspot.com/bug?extid=36315852ece4132ec193

Reported-by: syzbot+36315852ece4132ec193@syzkaller.appspotmail.com
Reported-by: kernel test robot <lkp@intel.com> # v2
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Cc: jfs-discussion@lists.sourceforge.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/jfs/jfs_filsys.h |    1 +
 fs/jfs/jfs_mount.c  |   10 ++++++++++
 2 files changed, 11 insertions(+)

--- a/fs/jfs/jfs_filsys.h
+++ b/fs/jfs/jfs_filsys.h
@@ -268,5 +268,6 @@
 				 * fsck() must be run to repair
 				 */
 #define	FM_EXTENDFS 0x00000008	/* file system extendfs() in progress */
+#define	FM_STATE_MAX 0x0000000f	/* max value of s_state */
 
 #endif				/* _H_JFS_FILSYS */
--- a/fs/jfs/jfs_mount.c
+++ b/fs/jfs/jfs_mount.c
@@ -37,6 +37,7 @@
 #include <linux/fs.h>
 #include <linux/buffer_head.h>
 #include <linux/blkdev.h>
+#include <linux/log2.h>
 
 #include "jfs_incore.h"
 #include "jfs_filsys.h"
@@ -366,6 +367,15 @@ static int chkSuper(struct super_block *
 	sbi->bsize = bsize;
 	sbi->l2bsize = le16_to_cpu(j_sb->s_l2bsize);
 
+	/* check some fields for possible corruption */
+	if (sbi->l2bsize != ilog2((u32)bsize) ||
+	    j_sb->pad != 0 ||
+	    le32_to_cpu(j_sb->s_state) > FM_STATE_MAX) {
+		rc = -EINVAL;
+		jfs_err("jfs_mount: Mount Failure: superblock is corrupt!");
+		goto out;
+	}
+
 	/*
 	 * For now, ignore s_pbsize, l2bfactor.  All I/O going through buffer
 	 * cache.

[PATCH 5.10 007/102] sched/core: Allow try_invoke_on_locked_down_task() with irqs disabled

[Greg Kroah-Hartman]

From: Peter Zijlstra <peterz@infradead.org>

commit 1b7af295541d75535374325fd617944534853919 upstream.

The try_invoke_on_locked_down_task() function currently requires
that interrupts be enabled, but it is called with interrupts
disabled from rcu_print_task_stall(), resulting in an "IRQs not
enabled as expected" diagnostic.  This commit therefore updates
try_invoke_on_locked_down_task() to use raw_spin_lock_irqsave() instead
of raw_spin_lock_irq(), thus allowing use from either context.

Link: https://lore.kernel.org/lkml/000000000000903d5805ab908fc4@google.com/
Link: https://lore.kernel.org/lkml/20200928075729.GC2611@hirez.programming.kicks-ass.net/
Reported-by: syzbot+cb3b69ae80afd6535b0e@syzkaller.appspotmail.com
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 kernel/sched/core.c |    9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2989,7 +2989,7 @@ out:
 
 /**
  * try_invoke_on_locked_down_task - Invoke a function on task in fixed state
- * @p: Process for which the function is to be invoked.
+ * @p: Process for which the function is to be invoked, can be @current.
  * @func: Function to invoke.
  * @arg: Argument to function.
  *
@@ -3007,12 +3007,11 @@ out:
  */
 bool try_invoke_on_locked_down_task(struct task_struct *p, bool (*func)(struct task_struct *t, void *arg), void *arg)
 {
-	bool ret = false;
 	struct rq_flags rf;
+	bool ret = false;
 	struct rq *rq;
 
-	lockdep_assert_irqs_enabled();
-	raw_spin_lock_irq(&p->pi_lock);
+	raw_spin_lock_irqsave(&p->pi_lock, rf.flags);
 	if (p->on_rq) {
 		rq = __task_rq_lock(p, &rf);
 		if (task_rq(p) == rq)
@@ -3029,7 +3028,7 @@ bool try_invoke_on_locked_down_task(stru
 				ret = func(p, arg);
 		}
 	}
-	raw_spin_unlock_irq(&p->pi_lock);
+	raw_spin_unlock_irqrestore(&p->pi_lock, rf.flags);
 	return ret;
 }
 

[PATCH 5.10 008/102] udlfb: Fix memory leak in dlfb_usb_probe

[Greg Kroah-Hartman]

From: Zqiang <qiang.zhang@windriver.com>

commit 5c0e4110f751934e748a66887c61f8e73805f0f9 upstream.

The dlfb_alloc_urb_list function is called in dlfb_usb_probe function,
after that if an error occurs, the dlfb_free_urb_list function need to
be called.

BUG: memory leak
unreferenced object 0xffff88810adde100 (size 32):
  comm "kworker/1:0", pid 17, jiffies 4294947788 (age 19.520s)
  hex dump (first 32 bytes):
    10 30 c3 0d 81 88 ff ff c0 fa 63 12 81 88 ff ff  .0........c.....
    00 30 c3 0d 81 88 ff ff 80 d1 3a 08 81 88 ff ff  .0........:.....
  backtrace:
    [<0000000019512953>] kmalloc include/linux/slab.h:552 [inline]
    [<0000000019512953>] kzalloc include/linux/slab.h:664 [inline]
    [<0000000019512953>] dlfb_alloc_urb_list drivers/video/fbdev/udlfb.c:1892 [inline]
    [<0000000019512953>] dlfb_usb_probe.cold+0x289/0x988 drivers/video/fbdev/udlfb.c:1704
    [<0000000072160152>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396
    [<00000000a8d6726f>] really_probe+0x159/0x480 drivers/base/dd.c:554
    [<00000000c3ce4b0e>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738
    [<00000000e942e01c>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844
    [<00000000de0a5a5c>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431
    [<00000000463fbcb4>] __device_attach+0x122/0x250 drivers/base/dd.c:912
    [<00000000b881a711>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491
    [<00000000364bbda5>] device_add+0x5ac/0xc30 drivers/base/core.c:2936
    [<00000000eecca418>] usb_set_configuration+0x9de/0xb90 drivers/usb/core/message.c:2159
    [<00000000edfeca2d>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238
    [<000000001830872b>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293
    [<00000000a8d6726f>] really_probe+0x159/0x480 drivers/base/dd.c:554
    [<00000000c3ce4b0e>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738
    [<00000000e942e01c>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844
    [<00000000de0a5a5c>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431

Reported-by: syzbot+c9e365d7f450e8aa615d@syzkaller.appspotmail.com
Signed-off-by: Zqiang <qiang.zhang@windriver.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215063022.16746-1-qiang.zhang@windriver.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/video/fbdev/udlfb.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/video/fbdev/udlfb.c
+++ b/drivers/video/fbdev/udlfb.c
@@ -1017,6 +1017,7 @@ static void dlfb_ops_destroy(struct fb_i
 	}
 	vfree(dlfb->backing_buffer);
 	kfree(dlfb->edid);
+	dlfb_free_urb_list(dlfb);
 	usb_put_dev(dlfb->udev);
 	kfree(dlfb);
 

[PATCH 5.10 009/102] media: mceusb: sanity check for prescaler value

[Greg Kroah-Hartman]

From: Sean Young <sean@mess.org>

commit 9dec0f48a75e0dadca498002d25ef4e143e60194 upstream.

prescaler larger than 8 would mean the carrier is at most 152Hz,
which does not make sense for IR carriers.

Reported-by: syzbot+6d31bf169a8265204b8d@syzkaller.appspotmail.com
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/media/rc/mceusb.c |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

--- a/drivers/media/rc/mceusb.c
+++ b/drivers/media/rc/mceusb.c
@@ -701,11 +701,18 @@ static void mceusb_dev_printdata(struct
 				data[0], data[1]);
 			break;
 		case MCE_RSP_EQIRCFS:
+			if (!data[0] && !data[1]) {
+				dev_dbg(dev, "%s: no carrier", inout);
+				break;
+			}
+			// prescaler should make sense
+			if (data[0] > 8)
+				break;
 			period = DIV_ROUND_CLOSEST((1U << data[0] * 2) *
 						   (data[1] + 1), 10);
 			if (!period)
 				break;
-			carrier = (1000 * 1000) / period;
+			carrier = USEC_PER_SEC / period;
 			dev_dbg(dev, "%s carrier of %u Hz (period %uus)",
 				 inout, carrier, period);
 			break;

[PATCH 5.10 010/102] erofs: fix shift-out-of-bounds of blkszbits

[Greg Kroah-Hartman]

From: Gao Xiang <hsiangkao@redhat.com>

commit bde545295b710bdd13a0fcd4b9fddd2383eeeb3a upstream.

syzbot generated a crafted bitszbits which can be shifted
out-of-bounds[1]. So directly print unsupported blkszbits
instead of blksize.

[1] https://lore.kernel.org/r/000000000000c72ddd05b9444d2f@google.com

Link: https://lore.kernel.org/r/20210120013016.14071-1-hsiangkao@aol.com
Reported-by: syzbot+c68f467cd7c45860e8d4@syzkaller.appspotmail.com
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Gao Xiang <hsiangkao@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/erofs/super.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/fs/erofs/super.c
+++ b/fs/erofs/super.c
@@ -158,8 +158,8 @@ static int erofs_read_superblock(struct
 	blkszbits = dsb->blkszbits;
 	/* 9(512 bytes) + LOG_SECTORS_PER_BLOCK == LOG_BLOCK_SIZE */
 	if (blkszbits != LOG_BLOCK_SIZE) {
-		erofs_err(sb, "blksize %u isn't supported on this platform",
-			  1 << blkszbits);
+		erofs_err(sb, "blkszbits %u isn't supported on this platform",
+			  blkszbits);
 		goto out;
 	}
 

[PATCH 5.10 011/102] media: v4l2-ctrls.c: fix shift-out-of-bounds in std_validate

[Greg Kroah-Hartman]

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

commit 048c96e28674f15c0403deba2104ffba64544a06 upstream.

If a menu has more than 64 items, then don't check menu_skip_mask
for items 65 and up.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reported-by: syzbot+42d8c7c3d3e594b34346@syzkaller.appspotmail.com
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/media/v4l2-core/v4l2-ctrls.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -1987,7 +1987,8 @@ static int std_validate(const struct v4l
 	case V4L2_CTRL_TYPE_INTEGER_MENU:
 		if (ptr.p_s32[idx] < ctrl->minimum || ptr.p_s32[idx] > ctrl->maximum)
 			return -ERANGE;
-		if (ctrl->menu_skip_mask & (1ULL << ptr.p_s32[idx]))
+		if (ptr.p_s32[idx] < BITS_PER_LONG_LONG &&
+		    (ctrl->menu_skip_mask & BIT_ULL(ptr.p_s32[idx])))
 			return -EINVAL;
 		if (ctrl->type == V4L2_CTRL_TYPE_MENU &&
 		    ctrl->qmenu[ptr.p_s32[idx]][0] == '\0')

[PATCH 5.10 012/102] xfs: Fix assert failure in xfs_setattr_size()

[Greg Kroah-Hartman]

From: Yumei Huang <yuhuang@redhat.com>

commit 88a9e03beef22cc5fabea344f54b9a0dfe63de08 upstream.

An assert failure is triggered by syzkaller test due to
ATTR_KILL_PRIV is not cleared before xfs_setattr_size.
As ATTR_KILL_PRIV is not checked/used by xfs_setattr_size,
just remove it from the assert.

Signed-off-by: Yumei Huang <yuhuang@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/xfs/xfs_iops.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -865,7 +865,7 @@ xfs_setattr_size(
 	ASSERT(xfs_isilocked(ip, XFS_MMAPLOCK_EXCL));
 	ASSERT(S_ISREG(inode->i_mode));
 	ASSERT((iattr->ia_valid & (ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET|
-		ATTR_MTIME_SET|ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0);
+		ATTR_MTIME_SET|ATTR_TIMES_SET)) == 0);
 
 	oldsize = inode->i_size;
 	newsize = iattr->ia_size;

[PATCH 5.10 013/102] net/af_iucv: remove WARN_ONCE on malformed RX packets

[Greg Kroah-Hartman]

From: Alexander Egorenkov <egorenar@linux.ibm.com>

commit 27e9c1de529919d8dd7d072415d3bcae77709300 upstream.

syzbot reported the following finding:

AF_IUCV failed to receive skb, len=0
WARNING: CPU: 0 PID: 522 at net/iucv/af_iucv.c:2039 afiucv_hs_rcv+0x174/0x190 net/iucv/af_iucv.c:2039
CPU: 0 PID: 522 Comm: syz-executor091 Not tainted 5.10.0-rc1-syzkaller-07082-g55027a88ec9f #0
Hardware name: IBM 3906 M04 701 (KVM/Linux)
Call Trace:
 [<00000000b87ea538>] afiucv_hs_rcv+0x178/0x190 net/iucv/af_iucv.c:2039
([<00000000b87ea534>] afiucv_hs_rcv+0x174/0x190 net/iucv/af_iucv.c:2039)
 [<00000000b796533e>] __netif_receive_skb_one_core+0x13e/0x188 net/core/dev.c:5315
 [<00000000b79653ce>] __netif_receive_skb+0x46/0x1c0 net/core/dev.c:5429
 [<00000000b79655fe>] netif_receive_skb_internal+0xb6/0x220 net/core/dev.c:5534
 [<00000000b796ac3a>] netif_receive_skb+0x42/0x318 net/core/dev.c:5593
 [<00000000b6fd45f4>] tun_rx_batched.isra.0+0x6fc/0x860 drivers/net/tun.c:1485
 [<00000000b6fddc4e>] tun_get_user+0x1c26/0x27f0 drivers/net/tun.c:1939
 [<00000000b6fe0f00>] tun_chr_write_iter+0x158/0x248 drivers/net/tun.c:1968
 [<00000000b4f22bfa>] call_write_iter include/linux/fs.h:1887 [inline]
 [<00000000b4f22bfa>] new_sync_write+0x442/0x648 fs/read_write.c:518
 [<00000000b4f238fe>] vfs_write.part.0+0x36e/0x5d8 fs/read_write.c:605
 [<00000000b4f2984e>] vfs_write+0x10e/0x148 fs/read_write.c:615
 [<00000000b4f29d0e>] ksys_write+0x166/0x290 fs/read_write.c:658
 [<00000000b8dc4ab4>] system_call+0xe0/0x28c arch/s390/kernel/entry.S:415
Last Breaking-Event-Address:
 [<00000000b8dc64d4>] __s390_indirect_jump_r14+0x0/0xc

Malformed RX packets shouldn't generate any warnings because
debugging info already flows to dropmon via the kfree_skb().

Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Reviewed-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/iucv/af_iucv.c |    1 -
 1 file changed, 1 deletion(-)

--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -2036,7 +2036,6 @@ static int afiucv_hs_rcv(struct sk_buff
 	char nullstring[8];
 
 	if (!pskb_may_pull(skb, sizeof(*trans_hdr))) {
-		WARN_ONCE(1, "AF_IUCV failed to receive skb, len=%u", skb->len);
 		kfree_skb(skb);
 		return NET_RX_SUCCESS;
 	}

[PATCH 5.10 014/102] smackfs: restrict bytes count in smackfs write functions

[Greg Kroah-Hartman]

From: Sabyrzhan Tasbolatov <snovitoll@gmail.com>

commit 7ef4c19d245f3dc233fd4be5acea436edd1d83d8 upstream.

syzbot found WARNINGs in several smackfs write operations where
bytes count is passed to memdup_user_nul which exceeds
GFP MAX_ORDER. Check count size if bigger than PAGE_SIZE.

Per smackfs doc, smk_write_net4addr accepts any label or -CIPSO,
smk_write_net6addr accepts any label or -DELETE. I couldn't find
any general rule for other label lengths except SMK_LABELLEN,
SMK_LONGLABEL, SMK_CIPSOMAX which are documented.

Let's constrain, in general, smackfs label lengths for PAGE_SIZE.
Although fuzzer crashes write to smackfs/netlabel on 0x400000 length.

Here is a quick way to reproduce the WARNING:
python -c "print('A' * 0x400000)" > /sys/fs/smackfs/netlabel

Reported-by: syzbot+a71a442385a0b2815497@syzkaller.appspotmail.com
Signed-off-by: Sabyrzhan Tasbolatov <snovitoll@gmail.com>
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 security/smack/smackfs.c |   21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

--- a/security/smack/smackfs.c
+++ b/security/smack/smackfs.c
@@ -1167,7 +1167,7 @@ static ssize_t smk_write_net4addr(struct
 		return -EPERM;
 	if (*ppos != 0)
 		return -EINVAL;
-	if (count < SMK_NETLBLADDRMIN)
+	if (count < SMK_NETLBLADDRMIN || count > PAGE_SIZE - 1)
 		return -EINVAL;
 
 	data = memdup_user_nul(buf, count);
@@ -1427,7 +1427,7 @@ static ssize_t smk_write_net6addr(struct
 		return -EPERM;
 	if (*ppos != 0)
 		return -EINVAL;
-	if (count < SMK_NETLBLADDRMIN)
+	if (count < SMK_NETLBLADDRMIN || count > PAGE_SIZE - 1)
 		return -EINVAL;
 
 	data = memdup_user_nul(buf, count);
@@ -1834,6 +1834,10 @@ static ssize_t smk_write_ambient(struct
 	if (!smack_privileged(CAP_MAC_ADMIN))
 		return -EPERM;
 
+	/* Enough data must be present */
+	if (count == 0 || count > PAGE_SIZE)
+		return -EINVAL;
+
 	data = memdup_user_nul(buf, count);
 	if (IS_ERR(data))
 		return PTR_ERR(data);
@@ -2005,6 +2009,9 @@ static ssize_t smk_write_onlycap(struct
 	if (!smack_privileged(CAP_MAC_ADMIN))
 		return -EPERM;
 
+	if (count > PAGE_SIZE)
+		return -EINVAL;
+
 	data = memdup_user_nul(buf, count);
 	if (IS_ERR(data))
 		return PTR_ERR(data);
@@ -2092,6 +2099,9 @@ static ssize_t smk_write_unconfined(stru
 	if (!smack_privileged(CAP_MAC_ADMIN))
 		return -EPERM;
 
+	if (count > PAGE_SIZE)
+		return -EINVAL;
+
 	data = memdup_user_nul(buf, count);
 	if (IS_ERR(data))
 		return PTR_ERR(data);
@@ -2647,6 +2657,10 @@ static ssize_t smk_write_syslog(struct f
 	if (!smack_privileged(CAP_MAC_ADMIN))
 		return -EPERM;
 
+	/* Enough data must be present */
+	if (count == 0 || count > PAGE_SIZE)
+		return -EINVAL;
+
 	data = memdup_user_nul(buf, count);
 	if (IS_ERR(data))
 		return PTR_ERR(data);
@@ -2739,10 +2753,13 @@ static ssize_t smk_write_relabel_self(st
 		return -EPERM;
 
 	/*
+	 * No partial write.
 	 * Enough data must be present.
 	 */
 	if (*ppos != 0)
 		return -EINVAL;
+	if (count == 0 || count > PAGE_SIZE)
+		return -EINVAL;
 
 	data = memdup_user_nul(buf, count);
 	if (IS_ERR(data))

[PATCH 5.10 015/102] tomoyo: ignore data race while checking quota

[Greg Kroah-Hartman]

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

commit 5797e861e402fff2bedce4ec8b7c89f4248b6073 upstream.

syzbot is reporting that tomoyo's quota check is racy [1]. But this check
is tolerant of some degree of inaccuracy. Thus, teach KCSAN to ignore
this data race.

[1] https://syzkaller.appspot.com/bug?id=999533deec7ba6337f8aa25d8bd1a4d5f7e50476

Reported-by: syzbot <syzbot+0789a72b46fd91431bd8@syzkaller.appspotmail.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 security/tomoyo/file.c    |   16 ++++++++--------
 security/tomoyo/network.c |    8 ++++----
 security/tomoyo/util.c    |   24 ++++++++++++------------
 3 files changed, 24 insertions(+), 24 deletions(-)

--- a/security/tomoyo/file.c
+++ b/security/tomoyo/file.c
@@ -362,14 +362,14 @@ static bool tomoyo_merge_path_acl(struct
 {
 	u16 * const a_perm = &container_of(a, struct tomoyo_path_acl, head)
 		->perm;
-	u16 perm = *a_perm;
+	u16 perm = READ_ONCE(*a_perm);
 	const u16 b_perm = container_of(b, struct tomoyo_path_acl, head)->perm;
 
 	if (is_delete)
 		perm &= ~b_perm;
 	else
 		perm |= b_perm;
-	*a_perm = perm;
+	WRITE_ONCE(*a_perm, perm);
 	return !perm;
 }
 
@@ -437,7 +437,7 @@ static bool tomoyo_merge_mkdev_acl(struc
 {
 	u8 *const a_perm = &container_of(a, struct tomoyo_mkdev_acl,
 					 head)->perm;
-	u8 perm = *a_perm;
+	u8 perm = READ_ONCE(*a_perm);
 	const u8 b_perm = container_of(b, struct tomoyo_mkdev_acl, head)
 		->perm;
 
@@ -445,7 +445,7 @@ static bool tomoyo_merge_mkdev_acl(struc
 		perm &= ~b_perm;
 	else
 		perm |= b_perm;
-	*a_perm = perm;
+	WRITE_ONCE(*a_perm, perm);
 	return !perm;
 }
 
@@ -517,14 +517,14 @@ static bool tomoyo_merge_path2_acl(struc
 {
 	u8 * const a_perm = &container_of(a, struct tomoyo_path2_acl, head)
 		->perm;
-	u8 perm = *a_perm;
+	u8 perm = READ_ONCE(*a_perm);
 	const u8 b_perm = container_of(b, struct tomoyo_path2_acl, head)->perm;
 
 	if (is_delete)
 		perm &= ~b_perm;
 	else
 		perm |= b_perm;
-	*a_perm = perm;
+	WRITE_ONCE(*a_perm, perm);
 	return !perm;
 }
 
@@ -655,7 +655,7 @@ static bool tomoyo_merge_path_number_acl
 {
 	u8 * const a_perm = &container_of(a, struct tomoyo_path_number_acl,
 					  head)->perm;
-	u8 perm = *a_perm;
+	u8 perm = READ_ONCE(*a_perm);
 	const u8 b_perm = container_of(b, struct tomoyo_path_number_acl, head)
 		->perm;
 
@@ -663,7 +663,7 @@ static bool tomoyo_merge_path_number_acl
 		perm &= ~b_perm;
 	else
 		perm |= b_perm;
-	*a_perm = perm;
+	WRITE_ONCE(*a_perm, perm);
 	return !perm;
 }
 
--- a/security/tomoyo/network.c
+++ b/security/tomoyo/network.c
@@ -233,14 +233,14 @@ static bool tomoyo_merge_inet_acl(struct
 {
 	u8 * const a_perm =
 		&container_of(a, struct tomoyo_inet_acl, head)->perm;
-	u8 perm = *a_perm;
+	u8 perm = READ_ONCE(*a_perm);
 	const u8 b_perm = container_of(b, struct tomoyo_inet_acl, head)->perm;
 
 	if (is_delete)
 		perm &= ~b_perm;
 	else
 		perm |= b_perm;
-	*a_perm = perm;
+	WRITE_ONCE(*a_perm, perm);
 	return !perm;
 }
 
@@ -259,14 +259,14 @@ static bool tomoyo_merge_unix_acl(struct
 {
 	u8 * const a_perm =
 		&container_of(a, struct tomoyo_unix_acl, head)->perm;
-	u8 perm = *a_perm;
+	u8 perm = READ_ONCE(*a_perm);
 	const u8 b_perm = container_of(b, struct tomoyo_unix_acl, head)->perm;
 
 	if (is_delete)
 		perm &= ~b_perm;
 	else
 		perm |= b_perm;
-	*a_perm = perm;
+	WRITE_ONCE(*a_perm, perm);
 	return !perm;
 }
 
--- a/security/tomoyo/util.c
+++ b/security/tomoyo/util.c
@@ -1053,30 +1053,30 @@ bool tomoyo_domain_quota_is_ok(struct to
 
 		if (ptr->is_deleted)
 			continue;
+		/*
+		 * Reading perm bitmap might race with tomoyo_merge_*() because
+		 * caller does not hold tomoyo_policy_lock mutex. But exceeding
+		 * max_learning_entry parameter by a few entries does not harm.
+		 */
 		switch (ptr->type) {
 		case TOMOYO_TYPE_PATH_ACL:
-			perm = container_of(ptr, struct tomoyo_path_acl, head)
-				->perm;
+			data_race(perm = container_of(ptr, struct tomoyo_path_acl, head)->perm);
 			break;
 		case TOMOYO_TYPE_PATH2_ACL:
-			perm = container_of(ptr, struct tomoyo_path2_acl, head)
-				->perm;
+			data_race(perm = container_of(ptr, struct tomoyo_path2_acl, head)->perm);
 			break;
 		case TOMOYO_TYPE_PATH_NUMBER_ACL:
-			perm = container_of(ptr, struct tomoyo_path_number_acl,
-					    head)->perm;
+			data_race(perm = container_of(ptr, struct tomoyo_path_number_acl, head)
+				  ->perm);
 			break;
 		case TOMOYO_TYPE_MKDEV_ACL:
-			perm = container_of(ptr, struct tomoyo_mkdev_acl,
-					    head)->perm;
+			data_race(perm = container_of(ptr, struct tomoyo_mkdev_acl, head)->perm);
 			break;
 		case TOMOYO_TYPE_INET_ACL:
-			perm = container_of(ptr, struct tomoyo_inet_acl,
-					    head)->perm;
+			data_race(perm = container_of(ptr, struct tomoyo_inet_acl, head)->perm);
 			break;
 		case TOMOYO_TYPE_UNIX_ACL:
-			perm = container_of(ptr, struct tomoyo_unix_acl,
-					    head)->perm;
+			data_race(perm = container_of(ptr, struct tomoyo_unix_acl, head)->perm);
 			break;
 		case TOMOYO_TYPE_MANUAL_TASK_ACL:
 			perm = 0;

[PATCH 5.10 016/102] net: fix up truesize of cloned skb in skb_prepare_for_shift()

[Greg Kroah-Hartman]

From: Marco Elver <elver@google.com>

commit 097b9146c0e26aabaa6ff3e5ea536a53f5254a79 upstream.

Avoid the assumption that ksize(kmalloc(S)) == ksize(kmalloc(S)): when
cloning an skb, save and restore truesize after pskb_expand_head(). This
can occur if the allocator decides to service an allocation of the same
size differently (e.g. use a different size class, or pass the
allocation on to KFENCE).

Because truesize is used for bookkeeping (such as sk_wmem_queued), a
modified truesize of a cloned skb may result in corrupt bookkeeping and
relevant warnings (such as in sk_stream_kill_queues()).

Link: https://lkml.kernel.org/r/X9JR/J6dMMOy1obu@elver.google.com
Reported-by: syzbot+7b99aafdcc2eedea6178@syzkaller.appspotmail.com
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20210201160420.2826895-1-elver@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/core/skbuff.c |   14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -3285,7 +3285,19 @@ EXPORT_SYMBOL(skb_split);
  */
 static int skb_prepare_for_shift(struct sk_buff *skb)
 {
-	return skb_cloned(skb) && pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+	int ret = 0;
+
+	if (skb_cloned(skb)) {
+		/* Save and restore truesize: pskb_expand_head() may reallocate
+		 * memory where ksize(kmalloc(S)) != ksize(kmalloc(S)), but we
+		 * cannot change truesize at this point.
+		 */
+		unsigned int save_truesize = skb->truesize;
+
+		ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+		skb->truesize = save_truesize;
+	}
+	return ret;
 }
 
 /**

[PATCH 5.10 017/102] riscv: Get rid of MAX_EARLY_MAPPING_SIZE

[Greg Kroah-Hartman]

From: Alexandre Ghiti <alex@ghiti.fr>

commit 0f02de4481da684aad6589aed0ea47bd1ab391c9 upstream.

At early boot stage, we have a whole PGDIR to map the kernel, so there
is no need to restrict the early mapping size to 128MB. Removing this
define also allows us to simplify some compile time logic.

This fixes large kernel mappings with a size greater than 128MB, as it
is the case for syzbot kernels whose size was just ~130MB.

Note that on rv64, for now, we are then limited to PGDIR size for early
mapping as we can't use PGD mappings (see [1]). That should be enough
given the relative small size of syzbot kernels compared to PGDIR_SIZE
which is 1GB.

[1] https://lore.kernel.org/lkml/20200603153608.30056-1-alex@ghiti.fr/

Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
Tested-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/riscv/mm/init.c |   21 +++++----------------
 1 file changed, 5 insertions(+), 16 deletions(-)

--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -222,8 +222,6 @@ pgd_t swapper_pg_dir[PTRS_PER_PGD] __pag
 pgd_t trampoline_pg_dir[PTRS_PER_PGD] __page_aligned_bss;
 pte_t fixmap_pte[PTRS_PER_PTE] __page_aligned_bss;
 
-#define MAX_EARLY_MAPPING_SIZE	SZ_128M
-
 pgd_t early_pg_dir[PTRS_PER_PGD] __initdata __aligned(PAGE_SIZE);
 
 void __set_fixmap(enum fixed_addresses idx, phys_addr_t phys, pgprot_t prot)
@@ -298,13 +296,7 @@ static void __init create_pte_mapping(pt
 
 pmd_t trampoline_pmd[PTRS_PER_PMD] __page_aligned_bss;
 pmd_t fixmap_pmd[PTRS_PER_PMD] __page_aligned_bss;
-
-#if MAX_EARLY_MAPPING_SIZE < PGDIR_SIZE
-#define NUM_EARLY_PMDS		1UL
-#else
-#define NUM_EARLY_PMDS		(1UL + MAX_EARLY_MAPPING_SIZE / PGDIR_SIZE)
-#endif
-pmd_t early_pmd[PTRS_PER_PMD * NUM_EARLY_PMDS] __initdata __aligned(PAGE_SIZE);
+pmd_t early_pmd[PTRS_PER_PMD] __initdata __aligned(PAGE_SIZE);
 pmd_t early_dtb_pmd[PTRS_PER_PMD] __initdata __aligned(PAGE_SIZE);
 
 static pmd_t *__init get_pmd_virt_early(phys_addr_t pa)
@@ -326,11 +318,9 @@ static pmd_t *get_pmd_virt_late(phys_add
 
 static phys_addr_t __init alloc_pmd_early(uintptr_t va)
 {
-	uintptr_t pmd_num;
+	BUG_ON((va - PAGE_OFFSET) >> PGDIR_SHIFT);
 
-	pmd_num = (va - PAGE_OFFSET) >> PGDIR_SHIFT;
-	BUG_ON(pmd_num >= NUM_EARLY_PMDS);
-	return (uintptr_t)&early_pmd[pmd_num * PTRS_PER_PMD];
+	return (uintptr_t)early_pmd;
 }
 
 static phys_addr_t __init alloc_pmd_fixmap(uintptr_t va)
@@ -448,7 +438,7 @@ asmlinkage void __init setup_vm(uintptr_
 	uintptr_t va, pa, end_va;
 	uintptr_t load_pa = (uintptr_t)(&_start);
 	uintptr_t load_sz = (uintptr_t)(&_end) - load_pa;
-	uintptr_t map_size = best_map_size(load_pa, MAX_EARLY_MAPPING_SIZE);
+	uintptr_t map_size;
 #ifndef __PAGETABLE_PMD_FOLDED
 	pmd_t fix_bmap_spmd, fix_bmap_epmd;
 #endif
@@ -460,12 +450,11 @@ asmlinkage void __init setup_vm(uintptr_
 	 * Enforce boot alignment requirements of RV32 and
 	 * RV64 by only allowing PMD or PGD mappings.
 	 */
-	BUG_ON(map_size == PAGE_SIZE);
+	map_size = PMD_SIZE;
 
 	/* Sanity check alignment and size */
 	BUG_ON((PAGE_OFFSET % PGDIR_SIZE) != 0);
 	BUG_ON((load_pa % map_size) != 0);
-	BUG_ON(load_sz > MAX_EARLY_MAPPING_SIZE);
 
 	pt_ops.alloc_pte = alloc_pte_early;
 	pt_ops.get_pte_virt = get_pte_virt_early;

[PATCH 5.10 018/102] nbd: handle device refs for DESTROY_ON_DISCONNECT properly

[Greg Kroah-Hartman]

From: Josef Bacik <josef@toxicpanda.com>

commit c9a2f90f4d6b9d42b9912f7aaf68e8d748acfffd upstream.

There exists a race where we can be attempting to create a new nbd
configuration while a previous configuration is going down, both
configured with DESTROY_ON_DISCONNECT.  Normally devices all have a
reference of 1, as they won't be cleaned up until the module is torn
down.  However with DESTROY_ON_DISCONNECT we'll make sure that there is
only 1 reference (generally) on the device for the config itself, and
then once the config is dropped, the device is torn down.

The race that exists looks like this

TASK1					TASK2
nbd_genl_connect()
  idr_find()
    refcount_inc_not_zero(nbd)
      * count is 2 here ^^
					nbd_config_put()
					  nbd_put(nbd) (count is 1)
    setup new config
      check DESTROY_ON_DISCONNECT
	put_dev = true
    if (put_dev) nbd_put(nbd)
	* free'd here ^^

In nbd_genl_connect() we assume that the nbd ref count will be 2,
however clearly that won't be true if the nbd device had been setup as
DESTROY_ON_DISCONNECT with its prior configuration.  Fix this by getting
rid of the runtime flag to check if we need to mess with the nbd device
refcount, and use the device NBD_DESTROY_ON_DISCONNECT flag to check if
we need to adjust the ref counts.  This was reported by syzkaller with
the following kasan dump

BUG: KASAN: use-after-free in instrument_atomic_read include/linux/instrumented.h:71 [inline]
BUG: KASAN: use-after-free in atomic_read include/asm-generic/atomic-instrumented.h:27 [inline]
BUG: KASAN: use-after-free in refcount_dec_not_one+0x71/0x1e0 lib/refcount.c:76
Read of size 4 at addr ffff888143bf71a0 by task systemd-udevd/8451

CPU: 0 PID: 8451 Comm: systemd-udevd Not tainted 5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x107/0x163 lib/dump_stack.c:120
 print_address_description.constprop.0.cold+0x5b/0x2f8 mm/kasan/report.c:230
 __kasan_report mm/kasan/report.c:396 [inline]
 kasan_report.cold+0x79/0xd5 mm/kasan/report.c:413
 check_memory_region_inline mm/kasan/generic.c:179 [inline]
 check_memory_region+0x13d/0x180 mm/kasan/generic.c:185
 instrument_atomic_read include/linux/instrumented.h:71 [inline]
 atomic_read include/asm-generic/atomic-instrumented.h:27 [inline]
 refcount_dec_not_one+0x71/0x1e0 lib/refcount.c:76
 refcount_dec_and_mutex_lock+0x19/0x140 lib/refcount.c:115
 nbd_put drivers/block/nbd.c:248 [inline]
 nbd_release+0x116/0x190 drivers/block/nbd.c:1508
 __blkdev_put+0x548/0x800 fs/block_dev.c:1579
 blkdev_put+0x92/0x570 fs/block_dev.c:1632
 blkdev_close+0x8c/0xb0 fs/block_dev.c:1640
 __fput+0x283/0x920 fs/file_table.c:280
 task_work_run+0xdd/0x190 kernel/task_work.c:140
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:174 [inline]
 exit_to_user_mode_prepare+0x249/0x250 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fc1e92b5270
Code: 73 01 c3 48 8b 0d 38 7d 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 59 c1 20 00 00 75 10 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ee fb ff ff 48 89 04 24
RSP: 002b:00007ffe8beb2d18 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00007fc1e92b5270
RDX: 000000000aba9500 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 00007fc1ea16f710 R08: 000000000000004a R09: 0000000000000008
R10: 0000562f8cb0b2a8 R11: 0000000000000246 R12: 0000000000000000
R13: 0000562f8cb0afd0 R14: 0000000000000003 R15: 000000000000000e

Allocated by task 1:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:401 [inline]
 ____kasan_kmalloc.constprop.0+0x82/0xa0 mm/kasan/common.c:429
 kmalloc include/linux/slab.h:552 [inline]
 kzalloc include/linux/slab.h:682 [inline]
 nbd_dev_add+0x44/0x8e0 drivers/block/nbd.c:1673
 nbd_init+0x250/0x271 drivers/block/nbd.c:2394
 do_one_initcall+0x103/0x650 init/main.c:1223
 do_initcall_level init/main.c:1296 [inline]
 do_initcalls init/main.c:1312 [inline]
 do_basic_setup init/main.c:1332 [inline]
 kernel_init_freeable+0x605/0x689 init/main.c:1533
 kernel_init+0xd/0x1b8 init/main.c:1421
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

Freed by task 8451:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
 kasan_set_track+0x1c/0x30 mm/kasan/common.c:46
 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:356
 ____kasan_slab_free+0xe1/0x110 mm/kasan/common.c:362
 kasan_slab_free include/linux/kasan.h:192 [inline]
 slab_free_hook mm/slub.c:1547 [inline]
 slab_free_freelist_hook+0x5d/0x150 mm/slub.c:1580
 slab_free mm/slub.c:3143 [inline]
 kfree+0xdb/0x3b0 mm/slub.c:4139
 nbd_dev_remove drivers/block/nbd.c:243 [inline]
 nbd_put.part.0+0x180/0x1d0 drivers/block/nbd.c:251
 nbd_put drivers/block/nbd.c:295 [inline]
 nbd_config_put+0x6dd/0x8c0 drivers/block/nbd.c:1242
 nbd_release+0x103/0x190 drivers/block/nbd.c:1507
 __blkdev_put+0x548/0x800 fs/block_dev.c:1579
 blkdev_put+0x92/0x570 fs/block_dev.c:1632
 blkdev_close+0x8c/0xb0 fs/block_dev.c:1640
 __fput+0x283/0x920 fs/file_table.c:280
 task_work_run+0xdd/0x190 kernel/task_work.c:140
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:174 [inline]
 exit_to_user_mode_prepare+0x249/0x250 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

The buggy address belongs to the object at ffff888143bf7000
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 416 bytes inside of
 1024-byte region [ffff888143bf7000, ffff888143bf7400)
The buggy address belongs to the page:
page:000000005238f4ce refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x143bf0
head:000000005238f4ce order:3 compound_mapcount:0 compound_pincount:0
flags: 0x57ff00000010200(slab|head)
raw: 057ff00000010200 ffffea00004b1400 0000000300000003 ffff888010c41140
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff888143bf7080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888143bf7100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888143bf7180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                               ^
 ffff888143bf7200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb

Reported-and-tested-by: syzbot+429d3f82d757c211bff3@syzkaller.appspotmail.com
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/block/nbd.c |   32 +++++++++++++++++++-------------
 1 file changed, 19 insertions(+), 13 deletions(-)

--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -78,8 +78,7 @@ struct link_dead_args {
 #define NBD_RT_HAS_PID_FILE		3
 #define NBD_RT_HAS_CONFIG_REF		4
 #define NBD_RT_BOUND			5
-#define NBD_RT_DESTROY_ON_DISCONNECT	6
-#define NBD_RT_DISCONNECT_ON_CLOSE	7
+#define NBD_RT_DISCONNECT_ON_CLOSE	6
 
 #define NBD_DESTROY_ON_DISCONNECT	0
 #define NBD_DISCONNECT_REQUESTED	1
@@ -1955,12 +1954,21 @@ again:
 	if (info->attrs[NBD_ATTR_CLIENT_FLAGS]) {
 		u64 flags = nla_get_u64(info->attrs[NBD_ATTR_CLIENT_FLAGS]);
 		if (flags & NBD_CFLAG_DESTROY_ON_DISCONNECT) {
-			set_bit(NBD_RT_DESTROY_ON_DISCONNECT,
-				&config->runtime_flags);
-			set_bit(NBD_DESTROY_ON_DISCONNECT, &nbd->flags);
-			put_dev = true;
+			/*
+			 * We have 1 ref to keep the device around, and then 1
+			 * ref for our current operation here, which will be
+			 * inherited by the config.  If we already have
+			 * DESTROY_ON_DISCONNECT set then we know we don't have
+			 * that extra ref already held so we don't need the
+			 * put_dev.
+			 */
+			if (!test_and_set_bit(NBD_DESTROY_ON_DISCONNECT,
+					      &nbd->flags))
+				put_dev = true;
 		} else {
-			clear_bit(NBD_DESTROY_ON_DISCONNECT, &nbd->flags);
+			if (test_and_clear_bit(NBD_DESTROY_ON_DISCONNECT,
+					       &nbd->flags))
+				refcount_inc(&nbd->refs);
 		}
 		if (flags & NBD_CFLAG_DISCONNECT_ON_CLOSE) {
 			set_bit(NBD_RT_DISCONNECT_ON_CLOSE,
@@ -2131,15 +2139,13 @@ static int nbd_genl_reconfigure(struct s
 	if (info->attrs[NBD_ATTR_CLIENT_FLAGS]) {
 		u64 flags = nla_get_u64(info->attrs[NBD_ATTR_CLIENT_FLAGS]);
 		if (flags & NBD_CFLAG_DESTROY_ON_DISCONNECT) {
-			if (!test_and_set_bit(NBD_RT_DESTROY_ON_DISCONNECT,
-					      &config->runtime_flags))
+			if (!test_and_set_bit(NBD_DESTROY_ON_DISCONNECT,
+					      &nbd->flags))
 				put_dev = true;
-			set_bit(NBD_DESTROY_ON_DISCONNECT, &nbd->flags);
 		} else {
-			if (test_and_clear_bit(NBD_RT_DESTROY_ON_DISCONNECT,
-					       &config->runtime_flags))
+			if (test_and_clear_bit(NBD_DESTROY_ON_DISCONNECT,
+					       &nbd->flags))
 				refcount_inc(&nbd->refs);
-			clear_bit(NBD_DESTROY_ON_DISCONNECT, &nbd->flags);
 		}
 
 		if (flags & NBD_CFLAG_DISCONNECT_ON_CLOSE) {

[PATCH 5.10 019/102] mm/hugetlb.c: fix unnecessary address expansion of pmd sharing

[Greg Kroah-Hartman]

From: Li Xinhai <lixinhai.lxh@gmail.com>

commit a1ba9da8f0f9a37d900ff7eff66482cf7de8015e upstream.

The current code would unnecessarily expand the address range.  Consider
one example, (start, end) = (1G-2M, 3G+2M), and (vm_start, vm_end) =
(1G-4M, 3G+4M), the expected adjustment should be keep (1G-2M, 3G+2M)
without expand.  But the current result will be (1G-4M, 3G+4M).  Actually,
the range (1G-4M, 1G) and (3G, 3G+4M) would never been involved in pmd
sharing.

After this patch, we will check that the vma span at least one PUD aligned
size and the start,end range overlap the aligned range of vma.

With above example, the aligned vma range is (1G, 3G), so if (start, end)
range is within (1G-4M, 1G), or within (3G, 3G+4M), then no adjustment to
both start and end.  Otherwise, we will have chance to adjust start
downwards or end upwards without exceeding (vm_start, vm_end).

Mike:

: The 'adjusted range' is used for calls to mmu notifiers and cache(tlb)
: flushing.  Since the current code unnecessarily expands the range in some
: cases, more entries than necessary would be flushed.  This would/could
: result in performance degradation.  However, this is highly dependent on
: the user runtime.  Is there a combination of vma layout and calls to
: actually hit this issue?  If the issue is hit, will those entries
: unnecessarily flushed be used again and need to be unnecessarily reloaded?

Link: https://lkml.kernel.org/r/20210104081631.2921415-1-lixinhai.lxh@gmail.com
Fixes: 75802ca66354 ("mm/hugetlb: fix calculation of adjust_range_if_pmd_sharing_possible")
Signed-off-by: Li Xinhai <lixinhai.lxh@gmail.com>
Suggested-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Peter Xu <peterx@redhat.com>
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>
---
 mm/hugetlb.c |   22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -5302,21 +5302,23 @@ static bool vma_shareable(struct vm_area
 void adjust_range_if_pmd_sharing_possible(struct vm_area_struct *vma,
 				unsigned long *start, unsigned long *end)
 {
-	unsigned long a_start, a_end;
+	unsigned long v_start = ALIGN(vma->vm_start, PUD_SIZE),
+		v_end = ALIGN_DOWN(vma->vm_end, PUD_SIZE);
 
-	if (!(vma->vm_flags & VM_MAYSHARE))
+	/*
+	 * vma need span at least one aligned PUD size and the start,end range
+	 * must at least partialy within it.
+	 */
+	if (!(vma->vm_flags & VM_MAYSHARE) || !(v_end > v_start) ||
+		(*end <= v_start) || (*start >= v_end))
 		return;
 
 	/* Extend the range to be PUD aligned for a worst case scenario */
-	a_start = ALIGN_DOWN(*start, PUD_SIZE);
-	a_end = ALIGN(*end, PUD_SIZE);
+	if (*start > v_start)
+		*start = ALIGN_DOWN(*start, PUD_SIZE);
 
-	/*
-	 * Intersect the range with the vma range, since pmd sharing won't be
-	 * across vma after all
-	 */
-	*start = max(vma->vm_start, a_start);
-	*end = min(vma->vm_end, a_end);
+	if (*end < v_end)
+		*end = ALIGN(*end, PUD_SIZE);
 }
 
 /*

[PATCH 5.10 020/102] RDMA/rtrs: Do not signal for heatbeat

[Greg Kroah-Hartman]

From: Jack Wang <jinpu.wang@cloud.ionos.com>

commit b38041d50add1c881fbc60eb2be93b58fc58ea21 upstream.

For HB, there is no need to generate signal for completion.

Also remove a comment accordingly.

Fixes: c0894b3ea69d ("RDMA/rtrs: core: lib functions shared between client and server modules")
Link: https://lore.kernel.org/r/20201217141915.56989-16-jinpu.wang@cloud.ionos.com
Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Reported-by: Gioh Kim <gi-oh.kim@cloud.ionos.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/infiniband/ulp/rtrs/rtrs-clt.c |    1 -
 drivers/infiniband/ulp/rtrs/rtrs-srv.c |    1 -
 drivers/infiniband/ulp/rtrs/rtrs.c     |    4 ++--
 3 files changed, 2 insertions(+), 4 deletions(-)

--- a/drivers/infiniband/ulp/rtrs/rtrs-clt.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
@@ -672,7 +672,6 @@ static void rtrs_clt_rdma_done(struct ib
 	case IB_WC_RDMA_WRITE:
 		/*
 		 * post_send() RDMA write completions of IO reqs (read/write)
-		 * and hb
 		 */
 		break;
 
--- a/drivers/infiniband/ulp/rtrs/rtrs-srv.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-srv.c
@@ -1260,7 +1260,6 @@ static void rtrs_srv_rdma_done(struct ib
 	case IB_WC_SEND:
 		/*
 		 * post_send() RDMA write completions of IO reqs (read/write)
-		 * and hb
 		 */
 		atomic_add(srv->queue_depth, &con->sq_wr_avail);
 
--- a/drivers/infiniband/ulp/rtrs/rtrs.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs.c
@@ -325,7 +325,7 @@ void rtrs_send_hb_ack(struct rtrs_sess *
 
 	imm = rtrs_to_imm(RTRS_HB_ACK_IMM, 0);
 	err = rtrs_post_rdma_write_imm_empty(usr_con, sess->hb_cqe, imm,
-					      IB_SEND_SIGNALED, NULL);
+					     0, NULL);
 	if (err) {
 		sess->hb_err_handler(usr_con);
 		return;
@@ -354,7 +354,7 @@ static void hb_work(struct work_struct *
 	}
 	imm = rtrs_to_imm(RTRS_HB_MSG_IMM, 0);
 	err = rtrs_post_rdma_write_imm_empty(usr_con, sess->hb_cqe, imm,
-					      IB_SEND_SIGNALED, NULL);
+					     0, NULL);
 	if (err) {
 		sess->hb_err_handler(usr_con);
 		return;

[PATCH 5.10 021/102] RDMA/rtrs-clt: Use bitmask to check sess->flags

[Greg Kroah-Hartman]

From: Jack Wang <jinpu.wang@cloud.ionos.com>

commit aaed465f761700dace9ab39521013cddaae4f5a3 upstream.

We may want to add new flags, so it's better to use bitmask to check flags.

Fixes: 6a98d71daea1 ("RDMA/rtrs: client: main functionality")
Link: https://lore.kernel.org/r/20201217141915.56989-17-jinpu.wang@cloud.ionos.com
Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Gioh Kim <gi-oh.kim@cloud.ionos.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/infiniband/ulp/rtrs/rtrs-clt.c |   14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

--- a/drivers/infiniband/ulp/rtrs/rtrs-clt.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
@@ -502,7 +502,7 @@ static void rtrs_clt_recv_done(struct rt
 	int err;
 	struct rtrs_clt_sess *sess = to_clt_sess(con->c.sess);
 
-	WARN_ON(sess->flags != RTRS_MSG_NEW_RKEY_F);
+	WARN_ON((sess->flags & RTRS_MSG_NEW_RKEY_F) == 0);
 	iu = container_of(wc->wr_cqe, struct rtrs_iu,
 			  cqe);
 	err = rtrs_iu_post_recv(&con->c, iu);
@@ -522,7 +522,7 @@ static void rtrs_clt_rkey_rsp_done(struc
 	u32 buf_id;
 	int err;
 
-	WARN_ON(sess->flags != RTRS_MSG_NEW_RKEY_F);
+	WARN_ON((sess->flags & RTRS_MSG_NEW_RKEY_F) == 0);
 
 	iu = container_of(wc->wr_cqe, struct rtrs_iu, cqe);
 
@@ -629,12 +629,12 @@ static void rtrs_clt_rdma_done(struct ib
 		} else if (imm_type == RTRS_HB_MSG_IMM) {
 			WARN_ON(con->c.cid);
 			rtrs_send_hb_ack(&sess->s);
-			if (sess->flags == RTRS_MSG_NEW_RKEY_F)
+			if (sess->flags & RTRS_MSG_NEW_RKEY_F)
 				return  rtrs_clt_recv_done(con, wc);
 		} else if (imm_type == RTRS_HB_ACK_IMM) {
 			WARN_ON(con->c.cid);
 			sess->s.hb_missed_cnt = 0;
-			if (sess->flags == RTRS_MSG_NEW_RKEY_F)
+			if (sess->flags & RTRS_MSG_NEW_RKEY_F)
 				return  rtrs_clt_recv_done(con, wc);
 		} else {
 			rtrs_wrn(con->c.sess, "Unknown IMM type %u\n",
@@ -662,7 +662,7 @@ static void rtrs_clt_rdma_done(struct ib
 		WARN_ON(!(wc->wc_flags & IB_WC_WITH_INVALIDATE ||
 			  wc->wc_flags & IB_WC_WITH_IMM));
 		WARN_ON(wc->wr_cqe->done != rtrs_clt_rdma_done);
-		if (sess->flags == RTRS_MSG_NEW_RKEY_F) {
+		if (sess->flags & RTRS_MSG_NEW_RKEY_F) {
 			if (wc->wc_flags & IB_WC_WITH_INVALIDATE)
 				return  rtrs_clt_recv_done(con, wc);
 
@@ -687,7 +687,7 @@ static int post_recv_io(struct rtrs_clt_
 	struct rtrs_clt_sess *sess = to_clt_sess(con->c.sess);
 
 	for (i = 0; i < q_size; i++) {
-		if (sess->flags == RTRS_MSG_NEW_RKEY_F) {
+		if (sess->flags & RTRS_MSG_NEW_RKEY_F) {
 			struct rtrs_iu *iu = &con->rsp_ius[i];
 
 			err = rtrs_iu_post_recv(&con->c, iu);
@@ -1579,7 +1579,7 @@ static int create_con_cq_qp(struct rtrs_
 			      sess->queue_depth * 3 + 1);
 	}
 	/* alloc iu to recv new rkey reply when server reports flags set */
-	if (sess->flags == RTRS_MSG_NEW_RKEY_F || con->c.cid == 0) {
+	if (sess->flags & RTRS_MSG_NEW_RKEY_F || con->c.cid == 0) {
 		con->rsp_ius = rtrs_iu_alloc(max_recv_wr, sizeof(*rsp),
 					      GFP_KERNEL, sess->s.dev->ib_dev,
 					      DMA_FROM_DEVICE,

[PATCH 5.10 022/102] RDMA/rtrs-srv: Do not signal REG_MR

[Greg Kroah-Hartman]

From: Jack Wang <jinpu.wang@cloud.ionos.com>

commit e8ae7ddb48a1b81fd1e67da34a0cb59daf0445d6 upstream.

We do not need to wait for REG_MR completion, so remove the
SIGNAL flag.

Fixes: 9cb837480424 ("RDMA/rtrs: server: main functionality")
Link: https://lore.kernel.org/r/20201217141915.56989-18-jinpu.wang@cloud.ionos.com
Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Gioh Kim <gi-oh.kim@cloud.ionos.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/infiniband/ulp/rtrs/rtrs-srv.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/infiniband/ulp/rtrs/rtrs-srv.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-srv.c
@@ -836,7 +836,7 @@ static int process_info_req(struct rtrs_
 		rwr[mri].wr.opcode = IB_WR_REG_MR;
 		rwr[mri].wr.wr_cqe = &local_reg_cqe;
 		rwr[mri].wr.num_sge = 0;
-		rwr[mri].wr.send_flags = mri ? 0 : IB_SEND_SIGNALED;
+		rwr[mri].wr.send_flags = 0;
 		rwr[mri].mr = mr;
 		rwr[mri].key = mr->rkey;
 		rwr[mri].access = (IB_ACCESS_LOCAL_WRITE |

[PATCH 5.10 023/102] tcp: fix tcp_rmem documentation

[Greg Kroah-Hartman]

From: Eric Dumazet <edumazet@google.com>

commit 1d1be91254bbdd189796041561fd430f7553bb88 upstream.

tcp_rmem[1] has been changed to 131072, we should update the documentation
to reflect this.

Fixes: a337531b942b ("tcp: up initial rmem to 128KB and SYN rwin to around 64KB")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Zhibin Liu <zhibinliu@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 Documentation/networking/ip-sysctl.rst |    7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

--- a/Documentation/networking/ip-sysctl.rst
+++ b/Documentation/networking/ip-sysctl.rst
@@ -630,16 +630,15 @@ tcp_rmem - vector of 3 INTEGERs: min, de
 
 	default: initial size of receive buffer used by TCP sockets.
 	This value overrides net.core.rmem_default used by other protocols.
-	Default: 87380 bytes. This value results in window of 65535 with
-	default setting of tcp_adv_win_scale and tcp_app_win:0 and a bit
-	less for default tcp_app_win. See below about these variables.
+	Default: 131072 bytes.
+	This value results in initial window of 65535.
 
 	max: maximal size of receive buffer allowed for automatically
 	selected receiver buffers for TCP socket. This value does not override
 	net.core.rmem_max.  Calling setsockopt() with SO_RCVBUF disables
 	automatic tuning of that socket's receive buffer size, in which
 	case this value is ignored.
-	Default: between 87380B and 6MB, depending on RAM size.
+	Default: between 131072 and 6MB, depending on RAM size.
 
 tcp_sack - BOOLEAN
 	Enable select acknowledgments (SACKS).

[PATCH 5.10 024/102] mptcp: do not wakeup listener for MPJ subflows

[Greg Kroah-Hartman]

From: Paolo Abeni <pabeni@redhat.com>

commit 52557dbc7538ecceb27ef2206719a47a8039a335 upstream.

MPJ subflows are not exposed as fds to user spaces. As such,
incoming MPJ subflows are removed from the accept queue by
tcp_check_req()/tcp_get_cookie_sock().

Later tcp_child_process() invokes subflow_data_ready() on the
parent socket regardless of the subflow kind, leading to poll
wakeups even if the later accept will block.

Address the issue by double-checking the queue state before
waking the user-space.

Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/164
Reported-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Fixes: f296234c98a8 ("mptcp: Add handling of incoming MP_JOIN requests")
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/mptcp/subflow.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/net/mptcp/subflow.c
+++ b/net/mptcp/subflow.c
@@ -981,6 +981,12 @@ static void subflow_data_ready(struct so
 
 	msk = mptcp_sk(parent);
 	if (state & TCPF_LISTEN) {
+		/* MPJ subflow are removed from accept queue before reaching here,
+		 * avoid stray wakeups
+		 */
+		if (reqsk_queue_empty(&inet_csk(sk)->icsk_accept_queue))
+			return;
+
 		set_bit(MPTCP_DATA_READY, &msk->flags);
 		parent->sk_data_ready(parent);
 		return;

[PATCH 5.10 025/102] net: bridge: use switchdev for port flags set through sysfs too

[Greg Kroah-Hartman]

From: Vladimir Oltean <vladimir.oltean@nxp.com>

commit 8043c845b63a2dd88daf2d2d268a33e1872800f0 upstream.

Looking through patchwork I don't see that there was any consensus to
use switchdev notifiers only in case of netlink provided port flags but
not sysfs (as a sort of deprecation, punishment or anything like that),
so we should probably keep the user interface consistent in terms of
functionality.

http://patchwork.ozlabs.org/project/netdev/patch/20170605092043.3523-3-jiri@resnulli.us/
http://patchwork.ozlabs.org/project/netdev/patch/20170608064428.4785-3-jiri@resnulli.us/

Fixes: 3922285d96e7 ("net: bridge: Add support for offloading port attributes")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/bridge/br_sysfs_if.c |    9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

--- a/net/bridge/br_sysfs_if.c
+++ b/net/bridge/br_sysfs_if.c
@@ -55,9 +55,8 @@ static BRPORT_ATTR(_name, 0644,					\
 static int store_flag(struct net_bridge_port *p, unsigned long v,
 		      unsigned long mask)
 {
-	unsigned long flags;
-
-	flags = p->flags;
+	unsigned long flags = p->flags;
+	int err;
 
 	if (v)
 		flags |= mask;
@@ -65,6 +64,10 @@ static int store_flag(struct net_bridge_
 		flags &= ~mask;
 
 	if (flags != p->flags) {
+		err = br_switchdev_set_port_flag(p, flags, mask);
+		if (err)
+			return err;
+
 		p->flags = flags;
 		br_port_flags_change(p, mask);
 	}

[PATCH 5.10 026/102] net/sched: cls_flower: Reject invalid ct_state flags rules

[Greg Kroah-Hartman]

From: wenxu <wenxu@ucloud.cn>

commit 1bcc51ac0731aab1b109b2cd5c3d495f1884e5ca upstream.

Reject the unsupported and invalid ct_state flags of cls flower rules.

Fixes: e0ace68af2ac ("net/sched: cls_flower: Add matching on conntrack info")
Signed-off-by: wenxu <wenxu@ucloud.cn>
Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/uapi/linux/pkt_cls.h |    2 ++
 net/sched/cls_flower.c       |   39 +++++++++++++++++++++++++++++++++++++--
 2 files changed, 39 insertions(+), 2 deletions(-)

--- a/include/uapi/linux/pkt_cls.h
+++ b/include/uapi/linux/pkt_cls.h
@@ -591,6 +591,8 @@ enum {
 	TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED = 1 << 1, /* Part of an existing connection. */
 	TCA_FLOWER_KEY_CT_FLAGS_RELATED = 1 << 2, /* Related to an established connection. */
 	TCA_FLOWER_KEY_CT_FLAGS_TRACKED = 1 << 3, /* Conntrack has occurred. */
+
+	__TCA_FLOWER_KEY_CT_FLAGS_MAX,
 };
 
 enum {
--- a/net/sched/cls_flower.c
+++ b/net/sched/cls_flower.c
@@ -30,6 +30,11 @@
 
 #include <uapi/linux/netfilter/nf_conntrack_common.h>
 
+#define TCA_FLOWER_KEY_CT_FLAGS_MAX \
+		((__TCA_FLOWER_KEY_CT_FLAGS_MAX - 1) << 1)
+#define TCA_FLOWER_KEY_CT_FLAGS_MASK \
+		(TCA_FLOWER_KEY_CT_FLAGS_MAX - 1)
+
 struct fl_flow_key {
 	struct flow_dissector_key_meta meta;
 	struct flow_dissector_key_control control;
@@ -686,8 +691,10 @@ static const struct nla_policy fl_policy
 	[TCA_FLOWER_KEY_ENC_IP_TTL_MASK] = { .type = NLA_U8 },
 	[TCA_FLOWER_KEY_ENC_OPTS]	= { .type = NLA_NESTED },
 	[TCA_FLOWER_KEY_ENC_OPTS_MASK]	= { .type = NLA_NESTED },
-	[TCA_FLOWER_KEY_CT_STATE]	= { .type = NLA_U16 },
-	[TCA_FLOWER_KEY_CT_STATE_MASK]	= { .type = NLA_U16 },
+	[TCA_FLOWER_KEY_CT_STATE]	=
+		NLA_POLICY_MASK(NLA_U16, TCA_FLOWER_KEY_CT_FLAGS_MASK),
+	[TCA_FLOWER_KEY_CT_STATE_MASK]	=
+		NLA_POLICY_MASK(NLA_U16, TCA_FLOWER_KEY_CT_FLAGS_MASK),
 	[TCA_FLOWER_KEY_CT_ZONE]	= { .type = NLA_U16 },
 	[TCA_FLOWER_KEY_CT_ZONE_MASK]	= { .type = NLA_U16 },
 	[TCA_FLOWER_KEY_CT_MARK]	= { .type = NLA_U32 },
@@ -1390,12 +1397,33 @@ static int fl_set_enc_opt(struct nlattr
 	return 0;
 }
 
+static int fl_validate_ct_state(u16 state, struct nlattr *tb,
+				struct netlink_ext_ack *extack)
+{
+	if (state && !(state & TCA_FLOWER_KEY_CT_FLAGS_TRACKED)) {
+		NL_SET_ERR_MSG_ATTR(extack, tb,
+				    "no trk, so no other flag can be set");
+		return -EINVAL;
+	}
+
+	if (state & TCA_FLOWER_KEY_CT_FLAGS_NEW &&
+	    state & TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED) {
+		NL_SET_ERR_MSG_ATTR(extack, tb,
+				    "new and est are mutually exclusive");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 static int fl_set_key_ct(struct nlattr **tb,
 			 struct flow_dissector_key_ct *key,
 			 struct flow_dissector_key_ct *mask,
 			 struct netlink_ext_ack *extack)
 {
 	if (tb[TCA_FLOWER_KEY_CT_STATE]) {
+		int err;
+
 		if (!IS_ENABLED(CONFIG_NF_CONNTRACK)) {
 			NL_SET_ERR_MSG(extack, "Conntrack isn't enabled");
 			return -EOPNOTSUPP;
@@ -1403,6 +1431,13 @@ static int fl_set_key_ct(struct nlattr *
 		fl_set_key_val(tb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
 			       &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
 			       sizeof(key->ct_state));
+
+		err = fl_validate_ct_state(mask->ct_state,
+					   tb[TCA_FLOWER_KEY_CT_STATE_MASK],
+					   extack);
+		if (err)
+			return err;
+
 	}
 	if (tb[TCA_FLOWER_KEY_CT_ZONE]) {
 		if (!IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES)) {

[PATCH 5.10 027/102] net: dsa: tag_rtl4_a: Support also egress tags

[Greg Kroah-Hartman]

From: Linus Walleij <linus.walleij@linaro.org>

commit 86dd9868b8788a9063893a97649594af93cd5aa6 upstream.

Support also transmitting frames using the custom "8899 A"
4 byte tag.

Qingfang came up with the solution: we need to pad the
ethernet frame to 60 bytes using eth_skb_pad(), then the
switch will happily accept frames with custom tags.

Cc: Mauri Sandberg <sandberg@mailfence.com>
Reported-by: DENG Qingfang <dqfext@gmail.com>
Fixes: efd7fe68f0c6 ("net: dsa: tag_rtl4_a: Implement Realtek 4 byte A tag")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/dsa/tag_rtl4_a.c |   43 +++++++++++++++++++++++++++++--------------
 1 file changed, 29 insertions(+), 14 deletions(-)

--- a/net/dsa/tag_rtl4_a.c
+++ b/net/dsa/tag_rtl4_a.c
@@ -12,9 +12,7 @@
  *
  * The 2 bytes tag form a 16 bit big endian word. The exact
  * meaning has been guessed from packet dumps from ingress
- * frames, as no working egress traffic has been available
- * we do not know the format of the egress tags or if they
- * are even supported.
+ * frames.
  */
 
 #include <linux/etherdevice.h>
@@ -36,17 +34,34 @@
 static struct sk_buff *rtl4a_tag_xmit(struct sk_buff *skb,
 				      struct net_device *dev)
 {
-	/*
-	 * Just let it pass thru, we don't know if it is possible
-	 * to tag a frame with the 0x8899 ethertype and direct it
-	 * to a specific port, all attempts at reverse-engineering have
-	 * ended up with the frames getting dropped.
-	 *
-	 * The VLAN set-up needs to restrict the frames to the right port.
-	 *
-	 * If you have documentation on the tagging format for RTL8366RB
-	 * (tag type A) then please contribute.
-	 */
+	struct dsa_port *dp = dsa_slave_to_port(dev);
+	u8 *tag;
+	u16 *p;
+	u16 out;
+
+	/* Pad out to at least 60 bytes */
+	if (unlikely(eth_skb_pad(skb)))
+		return NULL;
+	if (skb_cow_head(skb, RTL4_A_HDR_LEN) < 0)
+		return NULL;
+
+	netdev_dbg(dev, "add realtek tag to package to port %d\n",
+		   dp->index);
+	skb_push(skb, RTL4_A_HDR_LEN);
+
+	memmove(skb->data, skb->data + RTL4_A_HDR_LEN, 2 * ETH_ALEN);
+	tag = skb->data + 2 * ETH_ALEN;
+
+	/* Set Ethertype */
+	p = (u16 *)tag;
+	*p = htons(RTL4_A_ETHERTYPE);
+
+	out = (RTL4_A_PROTOCOL_RTL8366RB << 12) | (2 << 8);
+	/* The lower bits is the port numer */
+	out |= (u8)dp->index;
+	p = (u16 *)(tag + 2);
+	*p = htons(out);
+
 	return skb;
 }
 

[PATCH 5.10 028/102] net: ag71xx: remove unnecessary MTU reservation

[Greg Kroah-Hartman]

From: DENG Qingfang <dqfext@gmail.com>

commit 04b385f325080157ab1b5f8ce1b1de07ce0d9e27 upstream.

2 bytes of the MTU are reserved for Atheros DSA tag, but DSA core
has already handled that since commit dc0fe7d47f9f.
Remove the unnecessary reservation.

Fixes: d51b6ce441d3 ("net: ethernet: add ag71xx driver")
Signed-off-by: DENG Qingfang <dqfext@gmail.com>
Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/r/20210218034514.3421-1-dqfext@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/atheros/ag71xx.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- a/drivers/net/ethernet/atheros/ag71xx.c
+++ b/drivers/net/ethernet/atheros/ag71xx.c
@@ -223,8 +223,6 @@
 #define AG71XX_REG_RX_SM	0x01b0
 #define AG71XX_REG_TX_SM	0x01b4
 
-#define ETH_SWITCH_HEADER_LEN	2
-
 #define AG71XX_DEFAULT_MSG_ENABLE	\
 	(NETIF_MSG_DRV			\
 	| NETIF_MSG_PROBE		\
@@ -933,7 +931,7 @@ static void ag71xx_hw_setup(struct ag71x
 
 static unsigned int ag71xx_max_frame_len(unsigned int mtu)
 {
-	return ETH_SWITCH_HEADER_LEN + ETH_HLEN + VLAN_HLEN + mtu + ETH_FCS_LEN;
+	return ETH_HLEN + VLAN_HLEN + mtu + ETH_FCS_LEN;
 }
 
 static void ag71xx_hw_set_macaddr(struct ag71xx *ag, unsigned char *mac)

[PATCH 5.10 029/102] net: hsr: add support for EntryForgetTime

[Greg Kroah-Hartman]

From: Marco Wenzel <marco.wenzel@a-eberle.de>

commit f176411401127a07a9360dec14eca448eb2e9d45 upstream.

In IEC 62439-3 EntryForgetTime is defined with a value of 400 ms. When a
node does not send any frame within this time, the sequence number check
for can be ignored. This solves communication issues with Cisco IE 2000
in Redbox mode.

Fixes: f421436a591d ("net/hsr: Add support for the High-availability Seamless Redundancy protocol (HSRv0)")
Signed-off-by: Marco Wenzel <marco.wenzel@a-eberle.de>
Reviewed-by: George McCollister <george.mccollister@gmail.com>
Tested-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20210224094653.1440-1-marco.wenzel@a-eberle.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/hsr/hsr_framereg.c |    9 +++++++--
 net/hsr/hsr_framereg.h |    1 +
 net/hsr/hsr_main.h     |    1 +
 3 files changed, 9 insertions(+), 2 deletions(-)

--- a/net/hsr/hsr_framereg.c
+++ b/net/hsr/hsr_framereg.c
@@ -164,8 +164,10 @@ static struct hsr_node *hsr_add_node(str
 	 * as initialization. (0 could trigger an spurious ring error warning).
 	 */
 	now = jiffies;
-	for (i = 0; i < HSR_PT_PORTS; i++)
+	for (i = 0; i < HSR_PT_PORTS; i++) {
 		new_node->time_in[i] = now;
+		new_node->time_out[i] = now;
+	}
 	for (i = 0; i < HSR_PT_PORTS; i++)
 		new_node->seq_out[i] = seq_out;
 
@@ -411,9 +413,12 @@ void hsr_register_frame_in(struct hsr_no
 int hsr_register_frame_out(struct hsr_port *port, struct hsr_node *node,
 			   u16 sequence_nr)
 {
-	if (seq_nr_before_or_eq(sequence_nr, node->seq_out[port->type]))
+	if (seq_nr_before_or_eq(sequence_nr, node->seq_out[port->type]) &&
+	    time_is_after_jiffies(node->time_out[port->type] +
+	    msecs_to_jiffies(HSR_ENTRY_FORGET_TIME)))
 		return 1;
 
+	node->time_out[port->type] = jiffies;
 	node->seq_out[port->type] = sequence_nr;
 	return 0;
 }
--- a/net/hsr/hsr_framereg.h
+++ b/net/hsr/hsr_framereg.h
@@ -75,6 +75,7 @@ struct hsr_node {
 	enum hsr_port_type	addr_B_port;
 	unsigned long		time_in[HSR_PT_PORTS];
 	bool			time_in_stale[HSR_PT_PORTS];
+	unsigned long		time_out[HSR_PT_PORTS];
 	/* if the node is a SAN */
 	bool			san_a;
 	bool			san_b;
--- a/net/hsr/hsr_main.h
+++ b/net/hsr/hsr_main.h
@@ -21,6 +21,7 @@
 #define HSR_LIFE_CHECK_INTERVAL		 2000 /* ms */
 #define HSR_NODE_FORGET_TIME		60000 /* ms */
 #define HSR_ANNOUNCE_INTERVAL		  100 /* ms */
+#define HSR_ENTRY_FORGET_TIME		  400 /* ms */
 
 /* By how much may slave1 and slave2 timestamps of latest received frame from
  * each node differ before we notify of communication problem?

[PATCH 5.10 030/102] net: psample: Fix netlink skb length with tunnel info

[Greg Kroah-Hartman]

From: Chris Mi <cmi@nvidia.com>

commit a93dcaada2ddb58dbc72652b42548adedd646d7a upstream.

Currently, the psample netlink skb is allocated with a size that does
not account for the nested 'PSAMPLE_ATTR_TUNNEL' attribute and the
padding required for the 64-bit attribute 'PSAMPLE_TUNNEL_KEY_ATTR_ID'.
This can result in failure to add attributes to the netlink skb due
to insufficient tail room. The following error message is printed to
the kernel log: "Could not create psample log message".

Fix this by adjusting the allocation size to take into account the
nested attribute and the padding.

Fixes: d8bed686ab96 ("net: psample: Add tunnel support")
CC: Yotam Gigi <yotam.gi@gmail.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Chris Mi <cmi@nvidia.com>
Link: https://lore.kernel.org/r/20210225075145.184314-1-cmi@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/psample/psample.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/net/psample/psample.c
+++ b/net/psample/psample.c
@@ -309,10 +309,10 @@ static int psample_tunnel_meta_len(struc
 	unsigned short tun_proto = ip_tunnel_info_af(tun_info);
 	const struct ip_tunnel_key *tun_key = &tun_info->key;
 	int tun_opts_len = tun_info->options_len;
-	int sum = 0;
+	int sum = nla_total_size(0);	/* PSAMPLE_ATTR_TUNNEL */
 
 	if (tun_key->tun_flags & TUNNEL_KEY)
-		sum += nla_total_size(sizeof(u64));
+		sum += nla_total_size_64bit(sizeof(u64));
 
 	if (tun_info->mode & IP_TUNNEL_INFO_BRIDGE)
 		sum += nla_total_size(0);

[PATCH 5.10 031/102] net: fix dev_ifsioc_locked() race condition

[Greg Kroah-Hartman]

From: Cong Wang <cong.wang@bytedance.com>

commit 3b23a32a63219f51a5298bc55a65ecee866e79d0 upstream.

dev_ifsioc_locked() is called with only RCU read lock, so when
there is a parallel writer changing the mac address, it could
get a partially updated mac address, as shown below:

Thread 1			Thread 2
// eth_commit_mac_addr_change()
memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
				// dev_ifsioc_locked()
				memcpy(ifr->ifr_hwaddr.sa_data,
					dev->dev_addr,...);

Close this race condition by guarding them with a RW semaphore,
like netdev_get_name(). We can not use seqlock here as it does not
allow blocking. The writers already take RTNL anyway, so this does
not affect the slow path. To avoid bothering existing
dev_set_mac_address() callers in drivers, introduce a new wrapper
just for user-facing callers on ioctl and rtnetlink paths.

Note, bonding also changes slave mac addresses but that requires
a separate patch due to the complexity of bonding code.

Fixes: 3710becf8a58 ("net: RCU locking for simple ioctl()")
Reported-by: "Gong, Sishuai" <sishuai@purdue.edu>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/tap.c         |    7 +++----
 drivers/net/tun.c         |    5 ++---
 include/linux/netdevice.h |    3 +++
 net/core/dev.c            |   42 ++++++++++++++++++++++++++++++++++++++++++
 net/core/dev_ioctl.c      |   20 +++++++-------------
 net/core/rtnetlink.c      |    2 +-
 6 files changed, 58 insertions(+), 21 deletions(-)

--- a/drivers/net/tap.c
+++ b/drivers/net/tap.c
@@ -1093,10 +1093,9 @@ static long tap_ioctl(struct file *file,
 			return -ENOLINK;
 		}
 		ret = 0;
-		u = tap->dev->type;
+		dev_get_mac_address(&sa, dev_net(tap->dev), tap->dev->name);
 		if (copy_to_user(&ifr->ifr_name, tap->dev->name, IFNAMSIZ) ||
-		    copy_to_user(&ifr->ifr_hwaddr.sa_data, tap->dev->dev_addr, ETH_ALEN) ||
-		    put_user(u, &ifr->ifr_hwaddr.sa_family))
+		    copy_to_user(&ifr->ifr_hwaddr, &sa, sizeof(sa)))
 			ret = -EFAULT;
 		tap_put_tap_dev(tap);
 		rtnl_unlock();
@@ -1111,7 +1110,7 @@ static long tap_ioctl(struct file *file,
 			rtnl_unlock();
 			return -ENOLINK;
 		}
-		ret = dev_set_mac_address(tap->dev, &sa, NULL);
+		ret = dev_set_mac_address_user(tap->dev, &sa, NULL);
 		tap_put_tap_dev(tap);
 		rtnl_unlock();
 		return ret;
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -3157,15 +3157,14 @@ static long __tun_chr_ioctl(struct file
 
 	case SIOCGIFHWADDR:
 		/* Get hw address */
-		memcpy(ifr.ifr_hwaddr.sa_data, tun->dev->dev_addr, ETH_ALEN);
-		ifr.ifr_hwaddr.sa_family = tun->dev->type;
+		dev_get_mac_address(&ifr.ifr_hwaddr, net, tun->dev->name);
 		if (copy_to_user(argp, &ifr, ifreq_len))
 			ret = -EFAULT;
 		break;
 
 	case SIOCSIFHWADDR:
 		/* Set hw address */
-		ret = dev_set_mac_address(tun->dev, &ifr.ifr_hwaddr, NULL);
+		ret = dev_set_mac_address_user(tun->dev, &ifr.ifr_hwaddr, NULL);
 		break;
 
 	case TUNGETSNDBUF:
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3879,6 +3879,9 @@ int dev_pre_changeaddr_notify(struct net
 			      struct netlink_ext_ack *extack);
 int dev_set_mac_address(struct net_device *dev, struct sockaddr *sa,
 			struct netlink_ext_ack *extack);
+int dev_set_mac_address_user(struct net_device *dev, struct sockaddr *sa,
+			     struct netlink_ext_ack *extack);
+int dev_get_mac_address(struct sockaddr *sa, struct net *net, char *dev_name);
 int dev_change_carrier(struct net_device *, bool new_carrier);
 int dev_get_phys_port_id(struct net_device *dev,
 			 struct netdev_phys_item_id *ppid);
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -8686,6 +8686,48 @@ int dev_set_mac_address(struct net_devic
 }
 EXPORT_SYMBOL(dev_set_mac_address);
 
+static DECLARE_RWSEM(dev_addr_sem);
+
+int dev_set_mac_address_user(struct net_device *dev, struct sockaddr *sa,
+			     struct netlink_ext_ack *extack)
+{
+	int ret;
+
+	down_write(&dev_addr_sem);
+	ret = dev_set_mac_address(dev, sa, extack);
+	up_write(&dev_addr_sem);
+	return ret;
+}
+EXPORT_SYMBOL(dev_set_mac_address_user);
+
+int dev_get_mac_address(struct sockaddr *sa, struct net *net, char *dev_name)
+{
+	size_t size = sizeof(sa->sa_data);
+	struct net_device *dev;
+	int ret = 0;
+
+	down_read(&dev_addr_sem);
+	rcu_read_lock();
+
+	dev = dev_get_by_name_rcu(net, dev_name);
+	if (!dev) {
+		ret = -ENODEV;
+		goto unlock;
+	}
+	if (!dev->addr_len)
+		memset(sa->sa_data, 0, size);
+	else
+		memcpy(sa->sa_data, dev->dev_addr,
+		       min_t(size_t, size, dev->addr_len));
+	sa->sa_family = dev->type;
+
+unlock:
+	rcu_read_unlock();
+	up_read(&dev_addr_sem);
+	return ret;
+}
+EXPORT_SYMBOL(dev_get_mac_address);
+
 /**
  *	dev_change_carrier - Change device carrier
  *	@dev: device
--- a/net/core/dev_ioctl.c
+++ b/net/core/dev_ioctl.c
@@ -123,17 +123,6 @@ static int dev_ifsioc_locked(struct net
 		ifr->ifr_mtu = dev->mtu;
 		return 0;
 
-	case SIOCGIFHWADDR:
-		if (!dev->addr_len)
-			memset(ifr->ifr_hwaddr.sa_data, 0,
-			       sizeof(ifr->ifr_hwaddr.sa_data));
-		else
-			memcpy(ifr->ifr_hwaddr.sa_data, dev->dev_addr,
-			       min(sizeof(ifr->ifr_hwaddr.sa_data),
-				   (size_t)dev->addr_len));
-		ifr->ifr_hwaddr.sa_family = dev->type;
-		return 0;
-
 	case SIOCGIFSLAVE:
 		err = -EINVAL;
 		break;
@@ -274,7 +263,7 @@ static int dev_ifsioc(struct net *net, s
 	case SIOCSIFHWADDR:
 		if (dev->addr_len > sizeof(struct sockaddr))
 			return -EINVAL;
-		return dev_set_mac_address(dev, &ifr->ifr_hwaddr, NULL);
+		return dev_set_mac_address_user(dev, &ifr->ifr_hwaddr, NULL);
 
 	case SIOCSIFHWBROADCAST:
 		if (ifr->ifr_hwaddr.sa_family != dev->type)
@@ -418,6 +407,12 @@ int dev_ioctl(struct net *net, unsigned
 	 */
 
 	switch (cmd) {
+	case SIOCGIFHWADDR:
+		dev_load(net, ifr->ifr_name);
+		ret = dev_get_mac_address(&ifr->ifr_hwaddr, net, ifr->ifr_name);
+		if (colon)
+			*colon = ':';
+		return ret;
 	/*
 	 *	These ioctl calls:
 	 *	- can be done by all.
@@ -427,7 +422,6 @@ int dev_ioctl(struct net *net, unsigned
 	case SIOCGIFFLAGS:
 	case SIOCGIFMETRIC:
 	case SIOCGIFMTU:
-	case SIOCGIFHWADDR:
 	case SIOCGIFSLAVE:
 	case SIOCGIFMAP:
 	case SIOCGIFINDEX:
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -2658,7 +2658,7 @@ static int do_setlink(const struct sk_bu
 		sa->sa_family = dev->type;
 		memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]),
 		       dev->addr_len);
-		err = dev_set_mac_address(dev, sa, extack);
+		err = dev_set_mac_address_user(dev, sa, extack);
 		kfree(sa);
 		if (err)
 			goto errout;

[PATCH 5.10 032/102] dt-bindings: ethernet-controller: fix fixed-link specification

[Greg Kroah-Hartman]

From: Russell King <rmk+kernel@armlinux.org.uk>

commit 322322d15b9b912bc8710c367a95a7de62220a72 upstream.

The original fixed-link.txt allowed a pause property for fixed link.
This has been missed in the conversion to yaml format.

Fixes: 9d3de3c58347 ("dt-bindings: net: Add YAML schemas for the generic Ethernet options")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/E1l6W2G-0002Ga-0O@rmk-PC.armlinux.org.uk
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 Documentation/devicetree/bindings/net/ethernet-controller.yaml |    5 +++++
 1 file changed, 5 insertions(+)

--- a/Documentation/devicetree/bindings/net/ethernet-controller.yaml
+++ b/Documentation/devicetree/bindings/net/ethernet-controller.yaml
@@ -206,6 +206,11 @@ properties:
                 Indicates that full-duplex is used. When absent, half
                 duplex is assumed.
 
+            pause:
+              $ref: /schemas/types.yaml#definitions/flag
+              description:
+                Indicates that pause should be enabled.
+
             asym-pause:
               $ref: /schemas/types.yaml#definitions/flag
               description:

[PATCH 5.10 033/102] dt-bindings: net: btusb: DT fix s/interrupt-name/interrupt-names/

[Greg Kroah-Hartman]

From: Geert Uytterhoeven <geert+renesas@glider.be>

commit f288988930e93857e0375bdf88bb670c312b82eb upstream.

The standard DT property name is "interrupt-names".

Fixes: fd913ef7ce619467 ("Bluetooth: btusb: Add out-of-band wakeup support")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Acked-by: Rajat Jain <rajatja@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 Documentation/devicetree/bindings/net/btusb.txt |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/Documentation/devicetree/bindings/net/btusb.txt
+++ b/Documentation/devicetree/bindings/net/btusb.txt
@@ -38,7 +38,7 @@ Following example uses irq pin number 3
 	compatible = "usb1286,204e";
 	reg = <1>;
 	interrupt-parent = <&gpio0>;
-	interrupt-name = "wakeup";
+	interrupt-names = "wakeup";
 	interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
     };
 };

[PATCH 5.10 034/102] ASoC: qcom: Remove useless debug print

[Greg Kroah-Hartman]

From: Stephen Boyd <swboyd@chromium.org>

commit 16117beb16f01a470d40339960ffae1e287c03be upstream.

This looks like a left over debug print that tells us that HDMI is
enabled. Let's remove it as that's definitely not an error to have HDMI
enabled.

Cc: V Sujith Kumar Reddy <vsujithk@codeaurora.org>
Cc: Srinivasa Rao <srivasam@codeaurora.org>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Cheng-Yi Chiang <cychiang@chromium.org>
Fixes: 7cb37b7bd0d3 ("ASoC: qcom: Add support for lpass hdmi driver")
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210115034327.617223-2-swboyd@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 sound/soc/qcom/lpass-cpu.c |    1 -
 1 file changed, 1 deletion(-)

--- a/sound/soc/qcom/lpass-cpu.c
+++ b/sound/soc/qcom/lpass-cpu.c
@@ -743,7 +743,6 @@ static void of_lpass_cpu_parse_dai_data(
 		}
 		if (id == LPASS_DP_RX) {
 			data->hdmi_port_enable = 1;
-			dev_err(dev, "HDMI Port is enabled: %d\n", id);
 		} else {
 			data->mi2s_playback_sd_mode[id] =
 				of_lpass_cpu_parse_sd_lines(dev, node,

[PATCH 5.10 035/102] rsi: Fix TX EAPOL packet handling against iwlwifi AP

[Greg Kroah-Hartman]

From: Marek Vasut <marex@denx.de>

[ Upstream commit 65277100caa2f2c62b6f3c4648b90d6f0435f3bc ]

In case RSI9116 SDIO WiFi operates in STA mode against Intel 9260 in AP mode,
the association fails. The former is using wpa_supplicant during association,
the later is set up using hostapd:

iwl$ cat hostapd.conf
interface=wlp1s0
ssid=test
country_code=DE
hw_mode=g
channel=1
wpa=2
wpa_passphrase=test
wpa_key_mgmt=WPA-PSK
iwl$ hostapd -d hostapd.conf

rsi$ wpa_supplicant -i wlan0 -c <(wpa_passphrase test test)

The problem is that the TX EAPOL data descriptor RSI_DESC_REQUIRE_CFM_TO_HOST
flag and extended descriptor EAPOL4_CONFIRM frame type are not set in case the
AP is iwlwifi, because in that case the TX EAPOL packet is 2 bytes shorter.

The downstream vendor driver has this change in place already [1], however
there is no explanation for it, neither is there any commit history from which
such explanation could be obtained.

[1] https://github.com/SiliconLabs/RS911X-nLink-OSD/blob/master/rsi/rsi_91x_hal.c#L238

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Angus Ainslie <angus@akkea.ca>
Cc: David S. Miller <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Martin Kepplinger <martink@posteo.de>
Cc: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Cc: Siva Rebbagondla <siva8118@gmail.com>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20201015111616.429220-1-marex@denx.de
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/rsi/rsi_91x_hal.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/rsi/rsi_91x_hal.c b/drivers/net/wireless/rsi/rsi_91x_hal.c
index 3f7e3cfb6f00..ce9892152f4d 100644
--- a/drivers/net/wireless/rsi/rsi_91x_hal.c
+++ b/drivers/net/wireless/rsi/rsi_91x_hal.c
@@ -248,7 +248,8 @@ int rsi_prepare_data_desc(struct rsi_common *common, struct sk_buff *skb)
 			rsi_set_len_qno(&data_desc->len_qno,
 					(skb->len - FRAME_DESC_SZ),
 					RSI_WIFI_MGMT_Q);
-		if ((skb->len - header_size) == EAPOL4_PACKET_LEN) {
+		if (((skb->len - header_size) == EAPOL4_PACKET_LEN) ||
+		    ((skb->len - header_size) == EAPOL4_PACKET_LEN - 2)) {
 			data_desc->misc_flags |=
 				RSI_DESC_REQUIRE_CFM_TO_HOST;
 			xtend_desc->confirm_frame_type = EAPOL4_CONFIRM;
-- 
2.30.1

[PATCH 5.10 036/102] rsi: Move card interrupt handling to RX thread

[Greg Kroah-Hartman]

From: Marek Vasut <marex@denx.de>

[ Upstream commit 287431463e786766e05e4dc26d0a11d5f8ac8815 ]

The interrupt handling of the RS911x is particularly heavy. For each RX
packet, the card does three SDIO transactions, one to read interrupt
status register, one to RX buffer length, one to read the RX packet(s).
This translates to ~330 uS per one cycle of interrupt handler. In case
there is more incoming traffic, this will be more.

The drivers/mmc/core/sdio_irq.c has the following comment, quote "Just
like traditional hard IRQ handlers, we expect SDIO IRQ handlers to be
quick and to the point, so that the holding of the host lock does not
cover too much work that doesn't require that lock to be held."

The RS911x interrupt handler does not fit that. This patch therefore
changes it such that the entire IRQ handler is moved to the RX thread
instead, and the interrupt handler only wakes the RX thread.

This is OK, because the interrupt handler only does things which can
also be done in the RX thread, that is, it checks for firmware loading
error(s), it checks buffer status, it checks whether a packet arrived
and if so, reads out the packet and passes it to network stack.

Moreover, this change permits removal of a code which allocated an
skbuff only to get 4-byte-aligned buffer, read up to 8kiB of data
into the skbuff, queue this skbuff into local private queue, then in
RX thread, this buffer is dequeued, the data in the skbuff as passed
to the RSI driver core, and the skbuff is deallocated. All this is
replaced by directly calling the RSI driver core with local buffer.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Angus Ainslie <angus@akkea.ca>
Cc: David S. Miller <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Martin Kepplinger <martink@posteo.de>
Cc: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Cc: Siva Rebbagondla <siva8118@gmail.com>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Tested-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20201103180941.443528-1-marex@denx.de
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/rsi/rsi_91x_sdio.c     |  6 +--
 drivers/net/wireless/rsi/rsi_91x_sdio_ops.c | 52 ++++++---------------
 drivers/net/wireless/rsi/rsi_sdio.h         |  8 +---
 3 files changed, 15 insertions(+), 51 deletions(-)

diff --git a/drivers/net/wireless/rsi/rsi_91x_sdio.c b/drivers/net/wireless/rsi/rsi_91x_sdio.c
index a7b8684143f4..592e9dadcb55 100644
--- a/drivers/net/wireless/rsi/rsi_91x_sdio.c
+++ b/drivers/net/wireless/rsi/rsi_91x_sdio.c
@@ -153,9 +153,7 @@ static void rsi_handle_interrupt(struct sdio_func *function)
 	if (adapter->priv->fsm_state == FSM_FW_NOT_LOADED)
 		return;
 
-	dev->sdio_irq_task = current;
-	rsi_interrupt_handler(adapter);
-	dev->sdio_irq_task = NULL;
+	rsi_set_event(&dev->rx_thread.event);
 }
 
 /**
@@ -1058,8 +1056,6 @@ static int rsi_probe(struct sdio_func *pfunction,
 		rsi_dbg(ERR_ZONE, "%s: Unable to init rx thrd\n", __func__);
 		goto fail_kill_thread;
 	}
-	skb_queue_head_init(&sdev->rx_q.head);
-	sdev->rx_q.num_rx_pkts = 0;
 
 	sdio_claim_host(pfunction);
 	if (sdio_claim_irq(pfunction, rsi_handle_interrupt)) {
diff --git a/drivers/net/wireless/rsi/rsi_91x_sdio_ops.c b/drivers/net/wireless/rsi/rsi_91x_sdio_ops.c
index 7825c9a889d3..23e709aabd1f 100644
--- a/drivers/net/wireless/rsi/rsi_91x_sdio_ops.c
+++ b/drivers/net/wireless/rsi/rsi_91x_sdio_ops.c
@@ -60,39 +60,20 @@ int rsi_sdio_master_access_msword(struct rsi_hw *adapter, u16 ms_word)
 	return status;
 }
 
+static void rsi_rx_handler(struct rsi_hw *adapter);
+
 void rsi_sdio_rx_thread(struct rsi_common *common)
 {
 	struct rsi_hw *adapter = common->priv;
 	struct rsi_91x_sdiodev *sdev = adapter->rsi_dev;
-	struct sk_buff *skb;
-	int status;
 
 	do {
 		rsi_wait_event(&sdev->rx_thread.event, EVENT_WAIT_FOREVER);
 		rsi_reset_event(&sdev->rx_thread.event);
+		rsi_rx_handler(adapter);
+	} while (!atomic_read(&sdev->rx_thread.thread_done));
 
-		while (true) {
-			if (atomic_read(&sdev->rx_thread.thread_done))
-				goto out;
-
-			skb = skb_dequeue(&sdev->rx_q.head);
-			if (!skb)
-				break;
-			if (sdev->rx_q.num_rx_pkts > 0)
-				sdev->rx_q.num_rx_pkts--;
-			status = rsi_read_pkt(common, skb->data, skb->len);
-			if (status) {
-				rsi_dbg(ERR_ZONE, "Failed to read the packet\n");
-				dev_kfree_skb(skb);
-				break;
-			}
-			dev_kfree_skb(skb);
-		}
-	} while (1);
-
-out:
 	rsi_dbg(INFO_ZONE, "%s: Terminated SDIO RX thread\n", __func__);
-	skb_queue_purge(&sdev->rx_q.head);
 	atomic_inc(&sdev->rx_thread.thread_done);
 	complete_and_exit(&sdev->rx_thread.completion, 0);
 }
@@ -113,10 +94,6 @@ static int rsi_process_pkt(struct rsi_common *common)
 	u32 rcv_pkt_len = 0;
 	int status = 0;
 	u8 value = 0;
-	struct sk_buff *skb;
-
-	if (dev->rx_q.num_rx_pkts >= RSI_MAX_RX_PKTS)
-		return 0;
 
 	num_blks = ((adapter->interrupt_status & 1) |
 			((adapter->interrupt_status >> RECV_NUM_BLOCKS) << 1));
@@ -144,22 +121,19 @@ static int rsi_process_pkt(struct rsi_common *common)
 
 	rcv_pkt_len = (num_blks * 256);
 
-	skb = dev_alloc_skb(rcv_pkt_len);
-	if (!skb)
-		return -ENOMEM;
-
-	status = rsi_sdio_host_intf_read_pkt(adapter, skb->data, rcv_pkt_len);
+	status = rsi_sdio_host_intf_read_pkt(adapter, dev->pktbuffer,
+					     rcv_pkt_len);
 	if (status) {
 		rsi_dbg(ERR_ZONE, "%s: Failed to read packet from card\n",
 			__func__);
-		dev_kfree_skb(skb);
 		return status;
 	}
-	skb_put(skb, rcv_pkt_len);
-	skb_queue_tail(&dev->rx_q.head, skb);
-	dev->rx_q.num_rx_pkts++;
 
-	rsi_set_event(&dev->rx_thread.event);
+	status = rsi_read_pkt(common, dev->pktbuffer, rcv_pkt_len);
+	if (status) {
+		rsi_dbg(ERR_ZONE, "Failed to read the packet\n");
+		return status;
+	}
 
 	return 0;
 }
@@ -251,12 +225,12 @@ int rsi_init_sdio_slave_regs(struct rsi_hw *adapter)
 }
 
 /**
- * rsi_interrupt_handler() - This function read and process SDIO interrupts.
+ * rsi_rx_handler() - Read and process SDIO interrupts.
  * @adapter: Pointer to the adapter structure.
  *
  * Return: None.
  */
-void rsi_interrupt_handler(struct rsi_hw *adapter)
+static void rsi_rx_handler(struct rsi_hw *adapter)
 {
 	struct rsi_common *common = adapter->priv;
 	struct rsi_91x_sdiodev *dev =
diff --git a/drivers/net/wireless/rsi/rsi_sdio.h b/drivers/net/wireless/rsi/rsi_sdio.h
index 9afc1d0d2684..1c756263cf15 100644
--- a/drivers/net/wireless/rsi/rsi_sdio.h
+++ b/drivers/net/wireless/rsi/rsi_sdio.h
@@ -107,11 +107,6 @@ struct receive_info {
 	u32 buf_available_counter;
 };
 
-struct rsi_sdio_rx_q {
-	u8 num_rx_pkts;
-	struct sk_buff_head head;
-};
-
 struct rsi_91x_sdiodev {
 	struct sdio_func *pfunction;
 	struct task_struct *sdio_irq_task;
@@ -124,11 +119,10 @@ struct rsi_91x_sdiodev {
 	u16 tx_blk_size;
 	u8 write_fail;
 	bool buff_status_updated;
-	struct rsi_sdio_rx_q rx_q;
 	struct rsi_thread rx_thread;
+	u8 pktbuffer[8192] __aligned(4);
 };
 
-void rsi_interrupt_handler(struct rsi_hw *adapter);
 int rsi_init_sdio_slave_regs(struct rsi_hw *adapter);
 int rsi_sdio_read_register(struct rsi_hw *adapter, u32 addr, u8 *data);
 int rsi_sdio_host_intf_read_pkt(struct rsi_hw *adapter, u8 *pkt, u32 length);
-- 
2.30.1

[PATCH 5.10 037/102] rcu/nocb: Trigger self-IPI on late deferred wake up before user resume

[Greg Kroah-Hartman]

From: Frederic Weisbecker <frederic@kernel.org>

[ Upstream commit f8bb5cae9616224a39cbb399de382d36ac41df10 ]

Entering RCU idle mode may cause a deferred wake up of an RCU NOCB_GP
kthread (rcuog) to be serviced.

Unfortunately the call to rcu_user_enter() is already past the last
rescheduling opportunity before we resume to userspace or to guest mode.
We may escape there with the woken task ignored.

The ultimate resort to fix every callsites is to trigger a self-IPI
(nohz_full depends on arch to implement arch_irq_work_raise()) that will
trigger a reschedule on IRQ tail or guest exit.

Eventually every site that want a saner treatment will need to carefully
place a call to rcu_nocb_flush_deferred_wakeup() before the last explicit
need_resched() check upon resume.

Fixes: 96d3fd0d315a (rcu: Break call_rcu() deadlock involving scheduler and perf)
Reported-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20210131230548.32970-4-frederic@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 kernel/rcu/tree.c        | 21 ++++++++++++++++++++-
 kernel/rcu/tree.h        |  2 +-
 kernel/rcu/tree_plugin.h | 25 ++++++++++++++++---------
 3 files changed, 37 insertions(+), 11 deletions(-)

diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 5dc36c6e80fd..f137a599941b 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -669,6 +669,18 @@ void rcu_idle_enter(void)
 EXPORT_SYMBOL_GPL(rcu_idle_enter);
 
 #ifdef CONFIG_NO_HZ_FULL
+
+/*
+ * An empty function that will trigger a reschedule on
+ * IRQ tail once IRQs get re-enabled on userspace resume.
+ */
+static void late_wakeup_func(struct irq_work *work)
+{
+}
+
+static DEFINE_PER_CPU(struct irq_work, late_wakeup_work) =
+	IRQ_WORK_INIT(late_wakeup_func);
+
 /**
  * rcu_user_enter - inform RCU that we are resuming userspace.
  *
@@ -686,12 +698,19 @@ noinstr void rcu_user_enter(void)
 
 	lockdep_assert_irqs_disabled();
 
+	/*
+	 * We may be past the last rescheduling opportunity in the entry code.
+	 * Trigger a self IPI that will fire and reschedule once we resume to
+	 * user/guest mode.
+	 */
 	instrumentation_begin();
-	do_nocb_deferred_wakeup(rdp);
+	if (do_nocb_deferred_wakeup(rdp) && need_resched())
+		irq_work_queue(this_cpu_ptr(&late_wakeup_work));
 	instrumentation_end();
 
 	rcu_eqs_enter(true);
 }
+
 #endif /* CONFIG_NO_HZ_FULL */
 
 /**
diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h
index e4f66b8f7c47..0ec2b1f66b13 100644
--- a/kernel/rcu/tree.h
+++ b/kernel/rcu/tree.h
@@ -431,7 +431,7 @@ static bool rcu_nocb_try_bypass(struct rcu_data *rdp, struct rcu_head *rhp,
 static void __call_rcu_nocb_wake(struct rcu_data *rdp, bool was_empty,
 				 unsigned long flags);
 static int rcu_nocb_need_deferred_wakeup(struct rcu_data *rdp);
-static void do_nocb_deferred_wakeup(struct rcu_data *rdp);
+static bool do_nocb_deferred_wakeup(struct rcu_data *rdp);
 static void rcu_boot_init_nocb_percpu_data(struct rcu_data *rdp);
 static void rcu_spawn_cpu_nocb_kthread(int cpu);
 static void __init rcu_spawn_nocb_kthreads(void);
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index 7d4f78bf4057..29a00d9ea286 100644
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -1631,8 +1631,8 @@ bool rcu_is_nocb_cpu(int cpu)
  * Kick the GP kthread for this NOCB group.  Caller holds ->nocb_lock
  * and this function releases it.
  */
-static void wake_nocb_gp(struct rcu_data *rdp, bool force,
-			   unsigned long flags)
+static bool wake_nocb_gp(struct rcu_data *rdp, bool force,
+			 unsigned long flags)
 	__releases(rdp->nocb_lock)
 {
 	bool needwake = false;
@@ -1643,7 +1643,7 @@ static void wake_nocb_gp(struct rcu_data *rdp, bool force,
 		trace_rcu_nocb_wake(rcu_state.name, rdp->cpu,
 				    TPS("AlreadyAwake"));
 		rcu_nocb_unlock_irqrestore(rdp, flags);
-		return;
+		return false;
 	}
 	del_timer(&rdp->nocb_timer);
 	rcu_nocb_unlock_irqrestore(rdp, flags);
@@ -1656,6 +1656,8 @@ static void wake_nocb_gp(struct rcu_data *rdp, bool force,
 	raw_spin_unlock_irqrestore(&rdp_gp->nocb_gp_lock, flags);
 	if (needwake)
 		wake_up_process(rdp_gp->nocb_gp_kthread);
+
+	return needwake;
 }
 
 /*
@@ -2152,20 +2154,23 @@ static int rcu_nocb_need_deferred_wakeup(struct rcu_data *rdp)
 }
 
 /* Do a deferred wakeup of rcu_nocb_kthread(). */
-static void do_nocb_deferred_wakeup_common(struct rcu_data *rdp)
+static bool do_nocb_deferred_wakeup_common(struct rcu_data *rdp)
 {
 	unsigned long flags;
 	int ndw;
+	int ret;
 
 	rcu_nocb_lock_irqsave(rdp, flags);
 	if (!rcu_nocb_need_deferred_wakeup(rdp)) {
 		rcu_nocb_unlock_irqrestore(rdp, flags);
-		return;
+		return false;
 	}
 	ndw = READ_ONCE(rdp->nocb_defer_wakeup);
 	WRITE_ONCE(rdp->nocb_defer_wakeup, RCU_NOCB_WAKE_NOT);
-	wake_nocb_gp(rdp, ndw == RCU_NOCB_WAKE_FORCE, flags);
+	ret = wake_nocb_gp(rdp, ndw == RCU_NOCB_WAKE_FORCE, flags);
 	trace_rcu_nocb_wake(rcu_state.name, rdp->cpu, TPS("DeferredWake"));
+
+	return ret;
 }
 
 /* Do a deferred wakeup of rcu_nocb_kthread() from a timer handler. */
@@ -2181,10 +2186,11 @@ static void do_nocb_deferred_wakeup_timer(struct timer_list *t)
  * This means we do an inexact common-case check.  Note that if
  * we miss, ->nocb_timer will eventually clean things up.
  */
-static void do_nocb_deferred_wakeup(struct rcu_data *rdp)
+static bool do_nocb_deferred_wakeup(struct rcu_data *rdp)
 {
 	if (rcu_nocb_need_deferred_wakeup(rdp))
-		do_nocb_deferred_wakeup_common(rdp);
+		return do_nocb_deferred_wakeup_common(rdp);
+	return false;
 }
 
 void rcu_nocb_flush_deferred_wakeup(void)
@@ -2523,8 +2529,9 @@ static int rcu_nocb_need_deferred_wakeup(struct rcu_data *rdp)
 	return false;
 }
 
-static void do_nocb_deferred_wakeup(struct rcu_data *rdp)
+static bool do_nocb_deferred_wakeup(struct rcu_data *rdp)
 {
+	return false;
 }
 
 static void rcu_spawn_cpu_nocb_kthread(int cpu)
-- 
2.30.1

[PATCH 5.10 038/102] entry: Explicitly flush pending rcuog wakeup before last rescheduling point

[Greg Kroah-Hartman]

From: Frederic Weisbecker <frederic@kernel.org>

[ Upstream commit 47b8ff194c1fd73d58dc339b597d466fe48c8958 ]

Following the idle loop model, cleanly check for pending rcuog wakeup
before the last rescheduling point on resuming to user mode. This
way we can avoid to do it from rcu_user_enter() with the last resort
self-IPI hack that enforces rescheduling.

Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20210131230548.32970-5-frederic@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 kernel/entry/common.c |  7 +++++++
 kernel/rcu/tree.c     | 12 +++++++-----
 2 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/kernel/entry/common.c b/kernel/entry/common.c
index e9e2df3f3f9e..fcc7e93401d5 100644
--- a/kernel/entry/common.c
+++ b/kernel/entry/common.c
@@ -174,6 +174,10 @@ static unsigned long exit_to_user_mode_loop(struct pt_regs *regs,
 		 * enabled above.
 		 */
 		local_irq_disable_exit_to_user();
+
+		/* Check if any of the above work has queued a deferred wakeup */
+		rcu_nocb_flush_deferred_wakeup();
+
 		ti_work = READ_ONCE(current_thread_info()->flags);
 	}
 
@@ -187,6 +191,9 @@ static void exit_to_user_mode_prepare(struct pt_regs *regs)
 
 	lockdep_assert_irqs_disabled();
 
+	/* Flush pending rcuog wakeup before the last need_resched() check */
+	rcu_nocb_flush_deferred_wakeup();
+
 	if (unlikely(ti_work & EXIT_TO_USER_MODE_WORK))
 		ti_work = exit_to_user_mode_loop(regs, ti_work);
 
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index f137a599941b..0d8a2e2df221 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -699,13 +699,15 @@ noinstr void rcu_user_enter(void)
 	lockdep_assert_irqs_disabled();
 
 	/*
-	 * We may be past the last rescheduling opportunity in the entry code.
-	 * Trigger a self IPI that will fire and reschedule once we resume to
-	 * user/guest mode.
+	 * Other than generic entry implementation, we may be past the last
+	 * rescheduling opportunity in the entry code. Trigger a self IPI
+	 * that will fire and reschedule once we resume in user/guest mode.
 	 */
 	instrumentation_begin();
-	if (do_nocb_deferred_wakeup(rdp) && need_resched())
-		irq_work_queue(this_cpu_ptr(&late_wakeup_work));
+	if (!IS_ENABLED(CONFIG_GENERIC_ENTRY) || (current->flags & PF_VCPU)) {
+		if (do_nocb_deferred_wakeup(rdp) && need_resched())
+			irq_work_queue(this_cpu_ptr(&late_wakeup_work));
+	}
 	instrumentation_end();
 
 	rcu_eqs_enter(true);
-- 
2.30.1

[PATCH 5.10 039/102] entry/kvm: Explicitly flush pending rcuog wakeup before last rescheduling point

[Greg Kroah-Hartman]

From: Frederic Weisbecker <frederic@kernel.org>

[ Upstream commit 4ae7dc97f726ea95c58ac58af71cc034ad22d7de ]

Following the idle loop model, cleanly check for pending rcuog wakeup
before the last rescheduling point upon resuming to guest mode. This
way we can avoid to do it from rcu_user_enter() with the last resort
self-IPI hack that enforces rescheduling.

Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20210131230548.32970-6-frederic@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/x86/kvm/x86.c        |  1 +
 include/linux/entry-kvm.h | 14 +++++++++++++
 kernel/rcu/tree.c         | 44 ++++++++++++++++++++++++++++++---------
 kernel/rcu/tree_plugin.h  |  1 +
 4 files changed, 50 insertions(+), 10 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index fa5f059c2b94..08bb14e3bd61 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1776,6 +1776,7 @@ EXPORT_SYMBOL_GPL(kvm_emulate_wrmsr);
 
 bool kvm_vcpu_exit_request(struct kvm_vcpu *vcpu)
 {
+	xfer_to_guest_mode_prepare();
 	return vcpu->mode == EXITING_GUEST_MODE || kvm_request_pending(vcpu) ||
 		xfer_to_guest_mode_work_pending();
 }
diff --git a/include/linux/entry-kvm.h b/include/linux/entry-kvm.h
index 0cef17afb41a..d60ab08f9058 100644
--- a/include/linux/entry-kvm.h
+++ b/include/linux/entry-kvm.h
@@ -46,6 +46,20 @@ static inline int arch_xfer_to_guest_mode_handle_work(struct kvm_vcpu *vcpu,
  */
 int xfer_to_guest_mode_handle_work(struct kvm_vcpu *vcpu);
 
+/**
+ * xfer_to_guest_mode_prepare - Perform last minute preparation work that
+ *				need to be handled while IRQs are disabled
+ *				upon entering to guest.
+ *
+ * Has to be invoked with interrupts disabled before the last call
+ * to xfer_to_guest_mode_work_pending().
+ */
+static inline void xfer_to_guest_mode_prepare(void)
+{
+	lockdep_assert_irqs_disabled();
+	rcu_nocb_flush_deferred_wakeup();
+}
+
 /**
  * __xfer_to_guest_mode_work_pending - Check if work is pending
  *
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 0d8a2e2df221..eff2f7359a4c 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -670,9 +670,10 @@ EXPORT_SYMBOL_GPL(rcu_idle_enter);
 
 #ifdef CONFIG_NO_HZ_FULL
 
+#if !defined(CONFIG_GENERIC_ENTRY) || !defined(CONFIG_KVM_XFER_TO_GUEST_WORK)
 /*
  * An empty function that will trigger a reschedule on
- * IRQ tail once IRQs get re-enabled on userspace resume.
+ * IRQ tail once IRQs get re-enabled on userspace/guest resume.
  */
 static void late_wakeup_func(struct irq_work *work)
 {
@@ -681,6 +682,37 @@ static void late_wakeup_func(struct irq_work *work)
 static DEFINE_PER_CPU(struct irq_work, late_wakeup_work) =
 	IRQ_WORK_INIT(late_wakeup_func);
 
+/*
+ * If either:
+ *
+ * 1) the task is about to enter in guest mode and $ARCH doesn't support KVM generic work
+ * 2) the task is about to enter in user mode and $ARCH doesn't support generic entry.
+ *
+ * In these cases the late RCU wake ups aren't supported in the resched loops and our
+ * last resort is to fire a local irq_work that will trigger a reschedule once IRQs
+ * get re-enabled again.
+ */
+noinstr static void rcu_irq_work_resched(void)
+{
+	struct rcu_data *rdp = this_cpu_ptr(&rcu_data);
+
+	if (IS_ENABLED(CONFIG_GENERIC_ENTRY) && !(current->flags & PF_VCPU))
+		return;
+
+	if (IS_ENABLED(CONFIG_KVM_XFER_TO_GUEST_WORK) && (current->flags & PF_VCPU))
+		return;
+
+	instrumentation_begin();
+	if (do_nocb_deferred_wakeup(rdp) && need_resched()) {
+		irq_work_queue(this_cpu_ptr(&late_wakeup_work));
+	}
+	instrumentation_end();
+}
+
+#else
+static inline void rcu_irq_work_resched(void) { }
+#endif
+
 /**
  * rcu_user_enter - inform RCU that we are resuming userspace.
  *
@@ -694,8 +726,6 @@ static DEFINE_PER_CPU(struct irq_work, late_wakeup_work) =
  */
 noinstr void rcu_user_enter(void)
 {
-	struct rcu_data *rdp = this_cpu_ptr(&rcu_data);
-
 	lockdep_assert_irqs_disabled();
 
 	/*
@@ -703,13 +733,7 @@ noinstr void rcu_user_enter(void)
 	 * rescheduling opportunity in the entry code. Trigger a self IPI
 	 * that will fire and reschedule once we resume in user/guest mode.
 	 */
-	instrumentation_begin();
-	if (!IS_ENABLED(CONFIG_GENERIC_ENTRY) || (current->flags & PF_VCPU)) {
-		if (do_nocb_deferred_wakeup(rdp) && need_resched())
-			irq_work_queue(this_cpu_ptr(&late_wakeup_work));
-	}
-	instrumentation_end();
-
+	rcu_irq_work_resched();
 	rcu_eqs_enter(true);
 }
 
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index 29a00d9ea286..a9351906e290 100644
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -2197,6 +2197,7 @@ void rcu_nocb_flush_deferred_wakeup(void)
 {
 	do_nocb_deferred_wakeup(this_cpu_ptr(&rcu_data));
 }
+EXPORT_SYMBOL_GPL(rcu_nocb_flush_deferred_wakeup);
 
 void __init rcu_init_nohz(void)
 {
-- 
2.30.1

[PATCH 5.10 040/102] EDAC/amd64: Do not load on family 0x15, model 0x13

[Greg Kroah-Hartman]

From: Borislav Petkov <bp@suse.de>

[ Upstream commit 6c13d7ff81e6d2f01f62ccbfa49d1b8d87f274d0 ]

Those were only laptops and are very very unlikely to have ECC memory.
Currently, when the driver attempts to load, it issues:

  EDAC amd64: Error: F1 not found: device 0x1601 (broken BIOS?)

because the PCI device is the wrong one (it uses the F15h default one).

So do not load the driver on them as that is pointless.

Reported-by: Don Curtis <bugrprt21882@online.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Tested-by: Don Curtis <bugrprt21882@online.de>
Link: http://bugzilla.opensuse.org/show_bug.cgi?id=1179763
Link: https://lkml.kernel.org/r/20201218160622.20146-1-bp@alien8.de
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/edac/amd64_edac.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index 620f7041db6b..b36d5879b91e 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -3350,10 +3350,13 @@ static struct amd64_family_type *per_family_init(struct amd64_pvt *pvt)
 			fam_type = &family_types[F15_M60H_CPUS];
 			pvt->ops = &family_types[F15_M60H_CPUS].ops;
 			break;
+		/* Richland is only client */
+		} else if (pvt->model == 0x13) {
+			return NULL;
+		} else {
+			fam_type	= &family_types[F15_CPUS];
+			pvt->ops	= &family_types[F15_CPUS].ops;
 		}
-
-		fam_type	= &family_types[F15_CPUS];
-		pvt->ops	= &family_types[F15_CPUS].ops;
 		break;
 
 	case 0x16:
@@ -3547,6 +3550,7 @@ static int probe_one_instance(unsigned int nid)
 	pvt->mc_node_id	= nid;
 	pvt->F3 = F3;
 
+	ret = -ENODEV;
 	fam_type = per_family_init(pvt);
 	if (!fam_type)
 		goto err_enable;
-- 
2.30.1

[PATCH 5.10 041/102] staging: fwserial: Fix error handling in fwserial_create

[Greg Kroah-Hartman]

From: Dinghao Liu <dinghao.liu@zju.edu.cn>

[ Upstream commit f31559af97a0eabd467e4719253675b7dccb8a46 ]

When fw_core_add_address_handler() fails, we need to destroy
the port by tty_port_destroy(). Also we need to unregister
the address handler by fw_core_remove_address_handler() on
failure.

Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Link: https://lore.kernel.org/r/20201221122437.10274-1-dinghao.liu@zju.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/staging/fwserial/fwserial.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/staging/fwserial/fwserial.c b/drivers/staging/fwserial/fwserial.c
index db83d34cd677..c368082aae1a 100644
--- a/drivers/staging/fwserial/fwserial.c
+++ b/drivers/staging/fwserial/fwserial.c
@@ -2189,6 +2189,7 @@ static int fwserial_create(struct fw_unit *unit)
 		err = fw_core_add_address_handler(&port->rx_handler,
 						  &fw_high_memory_region);
 		if (err) {
+			tty_port_destroy(&port->port);
 			kfree(port);
 			goto free_ports;
 		}
@@ -2271,6 +2272,7 @@ unregister_ttys:
 
 free_ports:
 	for (--i; i >= 0; --i) {
+		fw_core_remove_address_handler(&serial->ports[i]->rx_handler);
 		tty_port_destroy(&serial->ports[i]->port);
 		kfree(serial->ports[i]);
 	}
-- 
2.30.1

[PATCH 5.10 042/102] x86/reboot: Add Zotac ZBOX CI327 nano PCI reboot quirk

[Greg Kroah-Hartman]

From: Heiner Kallweit <hkallweit1@gmail.com>

[ Upstream commit 4b2d8ca9208be636b30e924b1cbcb267b0740c93 ]

On this system the M.2 PCIe WiFi card isn't detected after reboot, only
after cold boot. reboot=pci fixes this behavior. In [0] the same issue
is described, although on another system and with another Intel WiFi
card. In case it's relevant, both systems have Celeron CPUs.

Add a PCI reboot quirk on affected systems until a more generic fix is
available.

[0] https://bugzilla.kernel.org/show_bug.cgi?id=202399

 [ bp: Massage commit message. ]

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/1524eafd-f89c-cfa4-ed70-0bde9e45eec9@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/x86/kernel/reboot.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index efbaef8b4de9..b29657b76e3f 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -477,6 +477,15 @@ static const struct dmi_system_id reboot_dmi_table[] __initconst = {
 		},
 	},
 
+	{	/* PCIe Wifi card isn't detected after reboot otherwise */
+		.callback = set_pci_reboot,
+		.ident = "Zotac ZBOX CI327 nano",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "NA"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "ZBOX-CI327NANO-GS-01"),
+		},
+	},
+
 	/* Sony */
 	{	/* Handle problems with rebooting on Sony VGN-Z540N */
 		.callback = set_bios_reboot,
-- 
2.30.1

[PATCH 5.10 043/102] vt/consolemap: do font sum unsigned

[Greg Kroah-Hartman]

From: Jiri Slaby <jslaby@suse.cz>

[ Upstream commit 9777f8e60e718f7b022a94f2524f967d8def1931 ]

The constant 20 makes the font sum computation signed which can lead to
sign extensions and signed wraps. It's not much of a problem as we build
with -fno-strict-overflow. But if we ever decide not to, be ready, so
switch the constant to unsigned.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210105120239.28031-7-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/tty/vt/consolemap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/vt/consolemap.c b/drivers/tty/vt/consolemap.c
index 5d778c0aa009..8ba0dc51a1f1 100644
--- a/drivers/tty/vt/consolemap.c
+++ b/drivers/tty/vt/consolemap.c
@@ -495,7 +495,7 @@ con_insert_unipair(struct uni_pagedir *p, u_short unicode, u_short fontpos)
 
 	p2[unicode & 0x3f] = fontpos;
 	
-	p->sum += (fontpos << 20) + unicode;
+	p->sum += (fontpos << 20U) + unicode;
 
 	return 0;
 }
-- 
2.30.1

[PATCH 5.10 044/102] wlcore: Fix command execute failure 19 for wl12xx

[Greg Kroah-Hartman]

From: Tony Lindgren <tony@atomide.com>

[ Upstream commit cb88d01b67383a095e3f7caeb4cdade5a6cf0417 ]

We can currently get a "command execute failure 19" error on beacon loss
if the signal is weak:

wlcore: Beacon loss detected. roles:0xff
wlcore: Connection loss work (role_id: 0).
...
wlcore: ERROR command execute failure 19
...
WARNING: CPU: 0 PID: 1552 at drivers/net/wireless/ti/wlcore/main.c:803
...
(wl12xx_queue_recovery_work.part.0 [wlcore])
(wl12xx_cmd_role_start_sta [wlcore])
(wl1271_op_bss_info_changed [wlcore])
(ieee80211_prep_connection [mac80211])

Error 19 is defined as CMD_STATUS_WRONG_NESTING from the wlcore firmware,
and seems to mean that the firmware no longer wants to see the quirk
handling for WLCORE_QUIRK_START_STA_FAILS done.

This quirk got added with commit 18eab430700d ("wlcore: workaround
start_sta problem in wl12xx fw"), and it seems that this already got fixed
in the firmware long time ago back in 2012 as wl18xx never had this quirk
in place to start with.

As we no longer even support firmware that early, to me it seems that it's
safe to just drop WLCORE_QUIRK_START_STA_FAILS to fix the error. Looks
like earlier firmware got disabled back in 2013 with commit 0e284c074ef9
("wl12xx: increase minimum singlerole firmware version required").

If it turns out we still need WLCORE_QUIRK_START_STA_FAILS with any
firmware that the driver works with, we can simply revert this patch and
add extra checks for firmware version used.

With this fix wlcore reconnects properly after a beacon loss.

Cc: Raz Bouganim <r-bouganim@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210115065613.7731-1-tony@atomide.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/ti/wl12xx/main.c   |  3 ---
 drivers/net/wireless/ti/wlcore/main.c   | 15 +--------------
 drivers/net/wireless/ti/wlcore/wlcore.h |  3 ---
 3 files changed, 1 insertion(+), 20 deletions(-)

diff --git a/drivers/net/wireless/ti/wl12xx/main.c b/drivers/net/wireless/ti/wl12xx/main.c
index 3c9c623bb428..9d7dbfe7fe0c 100644
--- a/drivers/net/wireless/ti/wl12xx/main.c
+++ b/drivers/net/wireless/ti/wl12xx/main.c
@@ -635,7 +635,6 @@ static int wl12xx_identify_chip(struct wl1271 *wl)
 		wl->quirks |= WLCORE_QUIRK_LEGACY_NVS |
 			      WLCORE_QUIRK_DUAL_PROBE_TMPL |
 			      WLCORE_QUIRK_TKIP_HEADER_SPACE |
-			      WLCORE_QUIRK_START_STA_FAILS |
 			      WLCORE_QUIRK_AP_ZERO_SESSION_ID;
 		wl->sr_fw_name = WL127X_FW_NAME_SINGLE;
 		wl->mr_fw_name = WL127X_FW_NAME_MULTI;
@@ -659,7 +658,6 @@ static int wl12xx_identify_chip(struct wl1271 *wl)
 		wl->quirks |= WLCORE_QUIRK_LEGACY_NVS |
 			      WLCORE_QUIRK_DUAL_PROBE_TMPL |
 			      WLCORE_QUIRK_TKIP_HEADER_SPACE |
-			      WLCORE_QUIRK_START_STA_FAILS |
 			      WLCORE_QUIRK_AP_ZERO_SESSION_ID;
 		wl->plt_fw_name = WL127X_PLT_FW_NAME;
 		wl->sr_fw_name = WL127X_FW_NAME_SINGLE;
@@ -688,7 +686,6 @@ static int wl12xx_identify_chip(struct wl1271 *wl)
 		wl->quirks |= WLCORE_QUIRK_TX_BLOCKSIZE_ALIGN |
 			      WLCORE_QUIRK_DUAL_PROBE_TMPL |
 			      WLCORE_QUIRK_TKIP_HEADER_SPACE |
-			      WLCORE_QUIRK_START_STA_FAILS |
 			      WLCORE_QUIRK_AP_ZERO_SESSION_ID;
 
 		wlcore_set_min_fw_ver(wl, WL128X_CHIP_VER,
diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index 6863fd552d5e..6e402d62dbe4 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -2872,21 +2872,8 @@ static int wlcore_join(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 
 	if (is_ibss)
 		ret = wl12xx_cmd_role_start_ibss(wl, wlvif);
-	else {
-		if (wl->quirks & WLCORE_QUIRK_START_STA_FAILS) {
-			/*
-			 * TODO: this is an ugly workaround for wl12xx fw
-			 * bug - we are not able to tx/rx after the first
-			 * start_sta, so make dummy start+stop calls,
-			 * and then call start_sta again.
-			 * this should be fixed in the fw.
-			 */
-			wl12xx_cmd_role_start_sta(wl, wlvif);
-			wl12xx_cmd_role_stop_sta(wl, wlvif);
-		}
-
+	else
 		ret = wl12xx_cmd_role_start_sta(wl, wlvif);
-	}
 
 	return ret;
 }
diff --git a/drivers/net/wireless/ti/wlcore/wlcore.h b/drivers/net/wireless/ti/wlcore/wlcore.h
index b7821311ac75..81c94d390623 100644
--- a/drivers/net/wireless/ti/wlcore/wlcore.h
+++ b/drivers/net/wireless/ti/wlcore/wlcore.h
@@ -547,9 +547,6 @@ wlcore_set_min_fw_ver(struct wl1271 *wl, unsigned int chip,
 /* Each RX/TX transaction requires an end-of-transaction transfer */
 #define WLCORE_QUIRK_END_OF_TRANSACTION		BIT(0)
 
-/* the first start_role(sta) sometimes doesn't work on wl12xx */
-#define WLCORE_QUIRK_START_STA_FAILS		BIT(1)
-
 /* wl127x and SPI don't support SDIO block size alignment */
 #define WLCORE_QUIRK_TX_BLOCKSIZE_ALIGN		BIT(2)
 
-- 
2.30.1

[PATCH 5.10 045/102] Bluetooth: hci_h5: Set HCI_QUIRK_SIMULTANEOUS_DISCOVERY for btrtl

[Greg Kroah-Hartman]

From: Claire Chang <tientzu@chromium.org>

[ Upstream commit 7f9f2c3f7d99b8ae773459c74ac5e99a0dd46db9 ]

Realtek Bluetooth controllers can do both LE scan and BR/EDR inquiry
at once, need to set HCI_QUIRK_SIMULTANEOUS_DISCOVERY quirk.

Signed-off-by: Claire Chang <tientzu@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/bluetooth/hci_h5.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/bluetooth/hci_h5.c b/drivers/bluetooth/hci_h5.c
index 78d635f1d156..996729e78105 100644
--- a/drivers/bluetooth/hci_h5.c
+++ b/drivers/bluetooth/hci_h5.c
@@ -906,6 +906,11 @@ static int h5_btrtl_setup(struct h5 *h5)
 	/* Give the device some time before the hci-core sends it a reset */
 	usleep_range(10000, 20000);
 
+	/* Enable controller to do both LE scan and BR/EDR inquiry
+	 * simultaneously.
+	 */
+	set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &h5->hu->hdev->quirks);
+
 out_free:
 	btrtl_free(btrtl_dev);
 
-- 
2.30.1

[PATCH 5.10 046/102] Bluetooth: btusb: fix memory leak on suspend and resume

[Greg Kroah-Hartman]

From: Vamshi K Sthambamkadi <vamshi.k.sthambamkadi@gmail.com>

[ Upstream commit 5ff20cbe6752a5bc06ff58fee8aa11a0d5075819 ]

kmemleak report:
unreferenced object 0xffff9b1127f00500 (size 208):
  comm "kworker/u17:2", pid 500, jiffies 4294937470 (age 580.136s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 60 ed 05 11 9b ff ff 00 00 00 00 00 00 00 00  .`..............
  backtrace:
    [<000000006ab3fd59>] kmem_cache_alloc_node+0x17a/0x480
    [<0000000051a5f6f9>] __alloc_skb+0x5b/0x1d0
    [<0000000037e2d252>] hci_prepare_cmd+0x32/0xc0 [bluetooth]
    [<0000000010b586d5>] hci_req_add_ev+0x84/0xe0 [bluetooth]
    [<00000000d2deb520>] hci_req_clear_event_filter+0x42/0x70 [bluetooth]
    [<00000000f864bd8c>] hci_req_prepare_suspend+0x84/0x470 [bluetooth]
    [<000000001deb2cc4>] hci_prepare_suspend+0x31/0x40 [bluetooth]
    [<000000002677dd79>] process_one_work+0x209/0x3b0
    [<00000000aaa62b07>] worker_thread+0x34/0x400
    [<00000000826d176c>] kthread+0x126/0x140
    [<000000002305e558>] ret_from_fork+0x22/0x30
unreferenced object 0xffff9b1125c6ee00 (size 512):
  comm "kworker/u17:2", pid 500, jiffies 4294937470 (age 580.136s)
  hex dump (first 32 bytes):
    04 00 00 00 0d 00 00 00 05 0c 01 00 11 9b ff ff  ................
    00 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000009f07c0cc>] slab_post_alloc_hook+0x59/0x270
    [<0000000049431dc2>] __kmalloc_node_track_caller+0x15f/0x330
    [<00000000027a42f6>] __kmalloc_reserve.isra.70+0x31/0x90
    [<00000000e8e3e76a>] __alloc_skb+0x87/0x1d0
    [<0000000037e2d252>] hci_prepare_cmd+0x32/0xc0 [bluetooth]
    [<0000000010b586d5>] hci_req_add_ev+0x84/0xe0 [bluetooth]
    [<00000000d2deb520>] hci_req_clear_event_filter+0x42/0x70 [bluetooth]
    [<00000000f864bd8c>] hci_req_prepare_suspend+0x84/0x470 [bluetooth]
    [<000000001deb2cc4>] hci_prepare_suspend+0x31/0x40 [bluetooth]
    [<000000002677dd79>] process_one_work+0x209/0x3b0
    [<00000000aaa62b07>] worker_thread+0x34/0x400
    [<00000000826d176c>] kthread+0x126/0x140
    [<000000002305e558>] ret_from_fork+0x22/0x30
unreferenced object 0xffff9b112b395788 (size 8):
  comm "kworker/u17:2", pid 500, jiffies 4294937470 (age 580.136s)
  hex dump (first 8 bytes):
    20 00 00 00 00 00 04 00                           .......
  backtrace:
    [<0000000052dc28d2>] kmem_cache_alloc_trace+0x15e/0x460
    [<0000000046147591>] alloc_ctrl_urb+0x52/0xe0 [btusb]
    [<00000000a2ed3e9e>] btusb_send_frame+0x91/0x100 [btusb]
    [<000000001e66030e>] hci_send_frame+0x7e/0xf0 [bluetooth]
    [<00000000bf6b7269>] hci_cmd_work+0xc5/0x130 [bluetooth]
    [<000000002677dd79>] process_one_work+0x209/0x3b0
    [<00000000aaa62b07>] worker_thread+0x34/0x400
    [<00000000826d176c>] kthread+0x126/0x140
    [<000000002305e558>] ret_from_fork+0x22/0x30

In pm sleep-resume context, while the btusb device rebinds, it enters
hci_unregister_dev(), whilst there is a possibility of hdev receiving
PM_POST_SUSPEND suspend_notifier event, leading to generation of msg
frames. When hci_unregister_dev() completes, i.e. hdev context is
destroyed/freed, those intermittently sent msg frames cause memory
leak.

BUG details:
Below is stack trace of thread that enters hci_unregister_dev(), marks
the hdev flag HCI_UNREGISTER to 1, and then goes onto to wait on notifier
lock - refer unregister_pm_notifier().

  hci_unregister_dev+0xa5/0x320 [bluetoot]
  btusb_disconnect+0x68/0x150 [btusb]
  usb_unbind_interface+0x77/0x250
  ? kernfs_remove_by_name_ns+0x75/0xa0
  device_release_driver_internal+0xfe/0x1
  device_release_driver+0x12/0x20
  bus_remove_device+0xe1/0x150
  device_del+0x192/0x3e0
  ? usb_remove_ep_devs+0x1f/0x30
  usb_disable_device+0x92/0x1b0
  usb_disconnect+0xc2/0x270
  hub_event+0x9f6/0x15d0
  ? rpm_idle+0x23/0x360
  ? rpm_idle+0x26b/0x360
  process_one_work+0x209/0x3b0
  worker_thread+0x34/0x400
  ? process_one_work+0x3b0/0x3b0
  kthread+0x126/0x140
  ? kthread_park+0x90/0x90
  ret_from_fork+0x22/0x30

Below is stack trace of thread executing hci_suspend_notifier() which
processes the PM_POST_SUSPEND event, while the unbinding thread is
waiting on lock.

  hci_suspend_notifier.cold.39+0x5/0x2b [bluetooth]
  blocking_notifier_call_chain+0x69/0x90
  pm_notifier_call_chain+0x1a/0x20
  pm_suspend.cold.9+0x334/0x352
  state_store+0x84/0xf0
  kobj_attr_store+0x12/0x20
  sysfs_kf_write+0x3b/0x40
  kernfs_fop_write+0xda/0x1c0
  vfs_write+0xbb/0x250
  ksys_write+0x61/0xe0
  __x64_sys_write+0x1a/0x20
  do_syscall_64+0x37/0x80
  entry_SYSCALL_64_after_hwframe+0x44/0xa9

Fix hci_suspend_notifer(), not to act on events when flag HCI_UNREGISTER
is set.

Signed-off-by: Vamshi K Sthambamkadi <vamshi.k.sthambamkadi@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/bluetooth/hci_core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 555058270f11..7a2f9559e99a 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -3529,7 +3529,8 @@ static int hci_suspend_notifier(struct notifier_block *nb, unsigned long action,
 	}
 
 	/* Suspend notifier should only act on events when powered. */
-	if (!hdev_is_powered(hdev))
+	if (!hdev_is_powered(hdev) ||
+	    hci_dev_test_flag(hdev, HCI_UNREGISTER))
 		goto done;
 
 	if (action == PM_SUSPEND_PREPARE) {
-- 
2.30.1

[PATCH 5.10 047/102] mt76: mt7615: reset token when mac_reset happens

[Greg Kroah-Hartman]

From: Ryder Lee <ryder.lee@mediatek.com>

[ Upstream commit a6275e934605646ef81b02d8d1164f21343149c9 ]

Reset token in mt7615_mac_reset_work() to avoid possible leakege.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 .../net/wireless/mediatek/mt76/mt7615/mac.c   | 20 +++++++++++++++++++
 .../wireless/mediatek/mt76/mt7615/mt7615.h    |  2 +-
 .../wireless/mediatek/mt76/mt7615/pci_init.c  | 12 +----------
 3 files changed, 22 insertions(+), 12 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
index 3d62fda067e4..f1f954ff4685 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
@@ -2098,6 +2098,23 @@ void mt7615_dma_reset(struct mt7615_dev *dev)
 }
 EXPORT_SYMBOL_GPL(mt7615_dma_reset);
 
+void mt7615_tx_token_put(struct mt7615_dev *dev)
+{
+	struct mt76_txwi_cache *txwi;
+	int id;
+
+	spin_lock_bh(&dev->token_lock);
+	idr_for_each_entry(&dev->token, txwi, id) {
+		mt7615_txp_skb_unmap(&dev->mt76, txwi);
+		if (txwi->skb)
+			dev_kfree_skb_any(txwi->skb);
+		mt76_put_txwi(&dev->mt76, txwi);
+	}
+	spin_unlock_bh(&dev->token_lock);
+	idr_destroy(&dev->token);
+}
+EXPORT_SYMBOL_GPL(mt7615_tx_token_put);
+
 void mt7615_mac_reset_work(struct work_struct *work)
 {
 	struct mt7615_phy *phy2;
@@ -2141,6 +2158,9 @@ void mt7615_mac_reset_work(struct work_struct *work)
 
 	mt76_wr(dev, MT_MCU_INT_EVENT, MT_MCU_INT_EVENT_PDMA_STOPPED);
 
+	mt7615_tx_token_put(dev);
+	idr_init(&dev->token);
+
 	if (mt7615_wait_reset_state(dev, MT_MCU_CMD_RESET_DONE)) {
 		mt7615_dma_reset(dev);
 
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h b/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
index 6a9f9187f76a..5b06294d654a 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
@@ -619,7 +619,7 @@ int mt7615_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
 			  struct mt76_tx_info *tx_info);
 
 void mt7615_tx_complete_skb(struct mt76_dev *mdev, struct mt76_queue_entry *e);
-
+void mt7615_tx_token_put(struct mt7615_dev *dev);
 void mt7615_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
 			 struct sk_buff *skb);
 void mt7615_sta_ps(struct mt76_dev *mdev, struct ieee80211_sta *sta, bool ps);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c b/drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c
index 06a0f8f7bc89..7b81aef3684e 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c
@@ -153,9 +153,7 @@ int mt7615_register_device(struct mt7615_dev *dev)
 
 void mt7615_unregister_device(struct mt7615_dev *dev)
 {
-	struct mt76_txwi_cache *txwi;
 	bool mcu_running;
-	int id;
 
 	mcu_running = mt7615_wait_for_mcu_init(dev);
 
@@ -165,15 +163,7 @@ void mt7615_unregister_device(struct mt7615_dev *dev)
 		mt7615_mcu_exit(dev);
 	mt7615_dma_cleanup(dev);
 
-	spin_lock_bh(&dev->token_lock);
-	idr_for_each_entry(&dev->token, txwi, id) {
-		mt7615_txp_skb_unmap(&dev->mt76, txwi);
-		if (txwi->skb)
-			dev_kfree_skb_any(txwi->skb);
-		mt76_put_txwi(&dev->mt76, txwi);
-	}
-	spin_unlock_bh(&dev->token_lock);
-	idr_destroy(&dev->token);
+	mt7615_tx_token_put(dev);
 
 	tasklet_disable(&dev->irq_tasklet);
 
-- 
2.30.1

[PATCH 5.10 048/102] pktgen: fix misuse of BUG_ON() in pktgen_thread_worker()

[Greg Kroah-Hartman]

From: Di Zhu <zhudi21@huawei.com>

[ Upstream commit 275b1e88cabb34dbcbe99756b67e9939d34a99b6 ]

pktgen create threads for all online cpus and bond these threads to
relevant cpu repecivtily. when this thread firstly be woken up, it
will compare cpu currently running with the cpu specified at the time
of creation and if the two cpus are not equal, BUG_ON() will take effect
causing panic on the system.
Notice that these threads could be migrated to other cpus before start
running because of the cpu hotplug after these threads have created. so the
BUG_ON() used here seems unreasonable and we can replace it with WARN_ON()
to just printf a warning other than panic the system.

Signed-off-by: Di Zhu <zhudi21@huawei.com>
Link: https://lore.kernel.org/r/20210125124229.19334-1-zhudi21@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/core/pktgen.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 105978604ffd..3fba429f1f57 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -3464,7 +3464,7 @@ static int pktgen_thread_worker(void *arg)
 	struct pktgen_dev *pkt_dev = NULL;
 	int cpu = t->cpu;
 
-	BUG_ON(smp_processor_id() != cpu);
+	WARN_ON(smp_processor_id() != cpu);
 
 	init_waitqueue_head(&t->queue);
 	complete(&t->start_done);
-- 
2.30.1

[PATCH 5.10 049/102] ath10k: fix wmi mgmt tx queue full due to race condition

[Greg Kroah-Hartman]

From: Miaoqing Pan <miaoqing@codeaurora.org>

[ Upstream commit b55379e343a3472c35f4a1245906db5158cab453 ]

Failed to transmit wmi management frames:

[84977.840894] ath10k_snoc a000000.wifi: wmi mgmt tx queue is full
[84977.840913] ath10k_snoc a000000.wifi: failed to transmit packet, dropping: -28
[84977.840924] ath10k_snoc a000000.wifi: failed to submit frame: -28
[84977.840932] ath10k_snoc a000000.wifi: failed to transmit frame: -28

This issue is caused by race condition between skb_dequeue and
__skb_queue_tail. The queue of ‘wmi_mgmt_tx_queue’ is protected by a
different lock: ar->data_lock vs list->lock, the result is no protection.
So when ath10k_mgmt_over_wmi_tx_work() and ath10k_mac_tx_wmi_mgmt()
running concurrently on different CPUs, there appear to be a rare corner
cases when the queue length is 1,

  CPUx (skb_deuque)			CPUy (__skb_queue_tail)
					next=list
					prev=list
  struct sk_buff *skb = skb_peek(list);	WRITE_ONCE(newsk->next, next);
  WRITE_ONCE(list->qlen, list->qlen - 1);WRITE_ONCE(newsk->prev, prev);
  next       = skb->next;		WRITE_ONCE(next->prev, newsk);
  prev       = skb->prev;		WRITE_ONCE(prev->next, newsk);
  skb->next  = skb->prev = NULL;	list->qlen++;
  WRITE_ONCE(next->prev, prev);
  WRITE_ONCE(prev->next, next);

If the instruction ‘next = skb->next’ is executed before
‘WRITE_ONCE(prev->next, newsk)’, newsk will be lost, as CPUx get the
old ‘next’ pointer, but the length is still added by one. The final
result is the length of the queue will reach the maximum value but
the queue is empty.

So remove ar->data_lock, and use 'skb_queue_tail' instead of
'__skb_queue_tail' to prevent the potential race condition. Also switch
to use skb_queue_len_lockless, in case we queue a few SKBs simultaneously.

Tested-on: WCN3990 hw1.0 SNOC WLAN.HL.3.1.c2-00033-QCAHLSWMTPLZ-1

Signed-off-by: Miaoqing Pan <miaoqing@codeaurora.org>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1608618887-8857-1-git-send-email-miaoqing@codeaurora.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/ath/ath10k/mac.c | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index 4bc84cc5e824..f5c0f9bac840 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -3763,23 +3763,16 @@ bool ath10k_mac_tx_frm_has_freq(struct ath10k *ar)
 static int ath10k_mac_tx_wmi_mgmt(struct ath10k *ar, struct sk_buff *skb)
 {
 	struct sk_buff_head *q = &ar->wmi_mgmt_tx_queue;
-	int ret = 0;
-
-	spin_lock_bh(&ar->data_lock);
 
-	if (skb_queue_len(q) == ATH10K_MAX_NUM_MGMT_PENDING) {
+	if (skb_queue_len_lockless(q) >= ATH10K_MAX_NUM_MGMT_PENDING) {
 		ath10k_warn(ar, "wmi mgmt tx queue is full\n");
-		ret = -ENOSPC;
-		goto unlock;
+		return -ENOSPC;
 	}
 
-	__skb_queue_tail(q, skb);
+	skb_queue_tail(q, skb);
 	ieee80211_queue_work(ar->hw, &ar->wmi_mgmt_tx_work);
 
-unlock:
-	spin_unlock_bh(&ar->data_lock);
-
-	return ret;
+	return 0;
 }
 
 static enum ath10k_mac_tx_path
-- 
2.30.1

[PATCH 5.10 050/102] net: sfp: add mode quirk for GPON module Ubiquiti U-Fiber Instant

[Greg Kroah-Hartman]

From: Pali Rohár <pali@kernel.org>

[ Upstream commit f0b4f847673299577c29b71d3f3acd3c313d81b7 ]

The Ubiquiti U-Fiber Instant SFP GPON module has nonsensical information
stored in its EEPROM. It claims to support all transceiver types including
10G Ethernet. Clear all claimed modes and set only 1000baseX_Full, which is
the only one supported.

This module has also phys_id set to SFF, and the SFP subsystem currently
does not allow to use SFP modules detected as SFFs. Add exception for this
module so it can be detected as supported.

This change finally allows to detect and use SFP GPON module Ubiquiti
U-Fiber Instant on Linux system.

EEPROM content of this SFP module is (where XX is serial number):

00: 02 04 0b ff ff ff ff ff ff ff ff 03 0c 00 14 c8    ???........??.??
10: 00 00 00 00 55 42 4e 54 20 20 20 20 20 20 20 20    ....UBNT
20: 20 20 20 20 00 18 e8 29 55 46 2d 49 4e 53 54 41        .??)UF-INSTA
30: 4e 54 20 20 20 20 20 20 34 20 20 20 05 1e 00 36    NT      4   ??.6
40: 00 06 00 00 55 42 4e 54 XX XX XX XX XX XX XX XX    .?..UBNTXXXXXXXX
50: 20 20 20 20 31 34 30 31 32 33 20 20 60 80 02 41        140123  `??A

Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/phy/sfp-bus.c | 15 +++++++++++++++
 drivers/net/phy/sfp.c     | 17 +++++++++++++++--
 2 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/drivers/net/phy/sfp-bus.c b/drivers/net/phy/sfp-bus.c
index 58014feedf6c..fb954e814180 100644
--- a/drivers/net/phy/sfp-bus.c
+++ b/drivers/net/phy/sfp-bus.c
@@ -44,6 +44,17 @@ static void sfp_quirk_2500basex(const struct sfp_eeprom_id *id,
 	phylink_set(modes, 2500baseX_Full);
 }
 
+static void sfp_quirk_ubnt_uf_instant(const struct sfp_eeprom_id *id,
+				      unsigned long *modes)
+{
+	/* Ubiquiti U-Fiber Instant module claims that support all transceiver
+	 * types including 10G Ethernet which is not truth. So clear all claimed
+	 * modes and set only one mode which module supports: 1000baseX_Full.
+	 */
+	phylink_zero(modes);
+	phylink_set(modes, 1000baseX_Full);
+}
+
 static const struct sfp_quirk sfp_quirks[] = {
 	{
 		// Alcatel Lucent G-010S-P can operate at 2500base-X, but
@@ -63,6 +74,10 @@ static const struct sfp_quirk sfp_quirks[] = {
 		.vendor = "HUAWEI",
 		.part = "MA5671A",
 		.modes = sfp_quirk_2500basex,
+	}, {
+		.vendor = "UBNT",
+		.part = "UF-INSTANT",
+		.modes = sfp_quirk_ubnt_uf_instant,
 	},
 };
 
diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c
index 34aa196b7465..d8a809cf20c1 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -272,8 +272,21 @@ static const struct sff_data sff_data = {
 
 static bool sfp_module_supported(const struct sfp_eeprom_id *id)
 {
-	return id->base.phys_id == SFF8024_ID_SFP &&
-	       id->base.phys_ext_id == SFP_PHYS_EXT_ID_SFP;
+	if (id->base.phys_id == SFF8024_ID_SFP &&
+	    id->base.phys_ext_id == SFP_PHYS_EXT_ID_SFP)
+		return true;
+
+	/* SFP GPON module Ubiquiti U-Fiber Instant has in its EEPROM stored
+	 * phys id SFF instead of SFP. Therefore mark this module explicitly
+	 * as supported based on vendor name and pn match.
+	 */
+	if (id->base.phys_id == SFF8024_ID_SFF_8472 &&
+	    id->base.phys_ext_id == SFP_PHYS_EXT_ID_SFP &&
+	    !memcmp(id->base.vendor_name, "UBNT            ", 16) &&
+	    !memcmp(id->base.vendor_pn, "UF-INSTANT      ", 16))
+		return true;
+
+	return false;
 }
 
 static const struct sff_data sfp_data = {
-- 
2.30.1

[PATCH 5.10 051/102] Bluetooth: Add new HCI_QUIRK_NO_SUSPEND_NOTIFIER quirk

[Greg Kroah-Hartman]

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

[ Upstream commit 219991e6be7f4a31d471611e265b72f75b2d0538 ]

Some devices, e.g. the RTL8723BS bluetooth part, some USB attached devices,
completely drop from the bus on a system-suspend. These devices will
have their driver unbound and rebound on resume (when the dropping of
the bus gets detected) and will show up as a new HCI after resume.

These devices do not benefit from the suspend / resume handling work done
by the hci_suspend_notifier. At best this unnecessarily adds some time to
the suspend/resume time. But this may also actually cause problems, if the
code doing the driver unbinding runs after the pm-notifier then the
hci_suspend_notifier code will try to talk to a device which is now in
an uninitialized state.

This commit adds a new HCI_QUIRK_NO_SUSPEND_NOTIFIER quirk which allows
drivers to opt-out of the hci_suspend_notifier when they know beforehand
that their device will be fully re-initialized / reprobed on resume.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/net/bluetooth/hci.h |  8 ++++++++
 net/bluetooth/hci_core.c    | 18 +++++++++++-------
 2 files changed, 19 insertions(+), 7 deletions(-)

diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index c8e67042a3b1..6da4b3c5dd55 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -238,6 +238,14 @@ enum {
 	 * during the hdev->setup vendor callback.
 	 */
 	HCI_QUIRK_BROKEN_ERR_DATA_REPORTING,
+
+	/*
+	 * When this quirk is set, then the hci_suspend_notifier is not
+	 * registered. This is intended for devices which drop completely
+	 * from the bus on system-suspend and which will show up as a new
+	 * HCI after resume.
+	 */
+	HCI_QUIRK_NO_SUSPEND_NOTIFIER,
 };
 
 /* HCI device flags */
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 7a2f9559e99a..0152bc6b6796 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -3785,10 +3785,12 @@ int hci_register_dev(struct hci_dev *hdev)
 	hci_sock_dev_event(hdev, HCI_DEV_REG);
 	hci_dev_hold(hdev);
 
-	hdev->suspend_notifier.notifier_call = hci_suspend_notifier;
-	error = register_pm_notifier(&hdev->suspend_notifier);
-	if (error)
-		goto err_wqueue;
+	if (!test_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks)) {
+		hdev->suspend_notifier.notifier_call = hci_suspend_notifier;
+		error = register_pm_notifier(&hdev->suspend_notifier);
+		if (error)
+			goto err_wqueue;
+	}
 
 	queue_work(hdev->req_workqueue, &hdev->power_on);
 
@@ -3823,9 +3825,11 @@ void hci_unregister_dev(struct hci_dev *hdev)
 
 	cancel_work_sync(&hdev->power_on);
 
-	hci_suspend_clear_tasks(hdev);
-	unregister_pm_notifier(&hdev->suspend_notifier);
-	cancel_work_sync(&hdev->suspend_prepare);
+	if (!test_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks)) {
+		hci_suspend_clear_tasks(hdev);
+		unregister_pm_notifier(&hdev->suspend_notifier);
+		cancel_work_sync(&hdev->suspend_prepare);
+	}
 
 	hci_dev_do_close(hdev);
 
-- 
2.30.1

[PATCH 5.10 052/102] Bluetooth: Fix null pointer dereference in amp_read_loc_assoc_final_data

[Greg Kroah-Hartman]

From: Gopal Tiwari <gtiwari@redhat.com>

[ Upstream commit e8bd76ede155fd54d8c41d045dda43cd3174d506 ]

kernel panic trace looks like:

 #5 [ffffb9e08698fc80] do_page_fault at ffffffffb666e0d7
 #6 [ffffb9e08698fcb0] page_fault at ffffffffb70010fe
    [exception RIP: amp_read_loc_assoc_final_data+63]
    RIP: ffffffffc06ab54f  RSP: ffffb9e08698fd68  RFLAGS: 00010246
    RAX: 0000000000000000  RBX: ffff8c8845a5a000  RCX: 0000000000000004
    RDX: 0000000000000000  RSI: ffff8c8b9153d000  RDI: ffff8c8845a5a000
    RBP: ffffb9e08698fe40   R8: 00000000000330e0   R9: ffffffffc0675c94
    R10: ffffb9e08698fe58  R11: 0000000000000001  R12: ffff8c8b9cbf6200
    R13: 0000000000000000  R14: 0000000000000000  R15: ffff8c8b2026da0b
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
 #7 [ffffb9e08698fda8] hci_event_packet at ffffffffc0676904 [bluetooth]
 #8 [ffffb9e08698fe50] hci_rx_work at ffffffffc06629ac [bluetooth]
 #9 [ffffb9e08698fe98] process_one_work at ffffffffb66f95e7

hcon->amp_mgr seems NULL triggered kernel panic in following line inside
function amp_read_loc_assoc_final_data

        set_bit(READ_LOC_AMP_ASSOC_FINAL, &mgr->state);

Fixed by checking NULL for mgr.

Signed-off-by: Gopal Tiwari <gtiwari@redhat.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/bluetooth/amp.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/bluetooth/amp.c b/net/bluetooth/amp.c
index 9c711f0dfae3..be2d469d6369 100644
--- a/net/bluetooth/amp.c
+++ b/net/bluetooth/amp.c
@@ -297,6 +297,9 @@ void amp_read_loc_assoc_final_data(struct hci_dev *hdev,
 	struct hci_request req;
 	int err;
 
+	if (!mgr)
+		return;
+
 	cp.phy_handle = hcon->handle;
 	cp.len_so_far = cpu_to_le16(0);
 	cp.max_len = cpu_to_le16(hdev->amp_assoc_size);
-- 
2.30.1

[PATCH 5.10 053/102] staging: most: sound: add sanity check for function argument

[Greg Kroah-Hartman]

From: Christian Gromm <christian.gromm@microchip.com>

[ Upstream commit 45b754ae5b82949dca2b6e74fa680313cefdc813 ]

This patch checks the function parameter 'bytes' before doing the
subtraction to prevent memory corruption.

Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/1612282865-21846-1-git-send-email-christian.gromm@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/staging/most/sound/sound.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/staging/most/sound/sound.c b/drivers/staging/most/sound/sound.c
index 8a449ab9bdce..b7666a7b1760 100644
--- a/drivers/staging/most/sound/sound.c
+++ b/drivers/staging/most/sound/sound.c
@@ -96,6 +96,8 @@ static void swap_copy24(u8 *dest, const u8 *source, unsigned int bytes)
 {
 	unsigned int i = 0;
 
+	if (bytes < 2)
+		return;
 	while (i < bytes - 2) {
 		dest[i] = source[i + 2];
 		dest[i + 1] = source[i + 1];
-- 
2.30.1

[PATCH 5.10 054/102] staging: bcm2835-audio: Replace unsafe strcpy() with strscpy()

[Greg Kroah-Hartman]

From: Juerg Haefliger <juerg.haefliger@canonical.com>

[ Upstream commit 4964a4300660d27907ceb655f219ac47e5941534 ]

Replace strcpy() with strscpy() in bcm2835-audio/bcm2835.c to prevent the
following when loading snd-bcm2835:

[   58.480634] ------------[ cut here ]------------
[   58.485321] kernel BUG at lib/string.c:1149!
[   58.489650] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
[   58.495214] Modules linked in: snd_bcm2835(COE+) snd_pcm snd_timer snd dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua btsdio bluetooth ecdh_generic ecc bcm2835_v4l2(CE) bcm2835_codec(CE) brcmfmac bcm2835_isp(CE) bcm2835_mmal_vchiq(CE) brcmutil cfg80211 v4l2_mem2mem videobuf2_vmalloc videobuf2_dma_contig videobuf2_memops raspberrypi_hwmon videobuf2_v4l2 videobuf2_common videodev bcm2835_gpiomem mc vc_sm_cma(CE) rpivid_mem uio_pdrv_genirq uio sch_fq_codel drm ip_tables x_tables autofs4 btrfs blake2b_generic raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor xor_neon raid6_pq libcrc32c raid1 raid0 multipath linear dwc2 roles spidev udc_core crct10dif_ce xhci_pci xhci_pci_renesas phy_generic aes_neon_bs aes_neon_blk crypto_simd cryptd
[   58.563787] CPU: 3 PID: 1959 Comm: insmod Tainted: G         C OE     5.11.0-1001-raspi #1
[   58.572172] Hardware name: Raspberry Pi 4 Model B Rev 1.2 (DT)
[   58.578086] pstate: 60400005 (nZCv daif +PAN -UAO -TCO BTYPE=--)
[   58.584178] pc : fortify_panic+0x20/0x24
[   58.588161] lr : fortify_panic+0x20/0x24
[   58.592136] sp : ffff800010a83990
[   58.595491] x29: ffff800010a83990 x28: 0000000000000002
[   58.600879] x27: ffffb0b07cb72928 x26: 0000000000000000
[   58.606268] x25: ffff39e884973838 x24: ffffb0b07cb74190
[   58.611655] x23: ffffb0b07cb72030 x22: 0000000000000000
[   58.617042] x21: ffff39e884973014 x20: ffff39e88b793010
[   58.622428] x19: ffffb0b07cb72670 x18: 0000000000000030
[   58.627814] x17: 0000000000000000 x16: ffffb0b092ce2c1c
[   58.633200] x15: ffff39e88b901500 x14: 0720072007200720
[   58.638588] x13: 0720072007200720 x12: 0720072007200720
[   58.643979] x11: ffffb0b0936cbdf0 x10: 00000000fffff000
[   58.649366] x9 : ffffb0b09220cfa8 x8 : 0000000000000000
[   58.654752] x7 : ffffb0b093673df0 x6 : ffffb0b09364e000
[   58.660140] x5 : 0000000000000000 x4 : ffff39e93b7db948
[   58.665526] x3 : ffff39e93b7ebcf0 x2 : 0000000000000000
[   58.670913] x1 : 0000000000000000 x0 : 0000000000000022
[   58.676299] Call trace:
[   58.678775]  fortify_panic+0x20/0x24
[   58.682402]  snd_bcm2835_alsa_probe+0x5b8/0x7d8 [snd_bcm2835]
[   58.688247]  platform_probe+0x74/0xe4
[   58.691963]  really_probe+0xf0/0x510
[   58.695585]  driver_probe_device+0xe0/0x100
[   58.699826]  device_driver_attach+0xcc/0xd4
[   58.704068]  __driver_attach+0xb0/0x17c
[   58.707956]  bus_for_each_dev+0x7c/0xd4
[   58.711843]  driver_attach+0x30/0x40
[   58.715467]  bus_add_driver+0x154/0x250
[   58.719354]  driver_register+0x84/0x140
[   58.723242]  __platform_driver_register+0x34/0x40
[   58.728013]  bcm2835_alsa_driver_init+0x30/0x1000 [snd_bcm2835]
[   58.734024]  do_one_initcall+0x54/0x300
[   58.737914]  do_init_module+0x60/0x280
[   58.741719]  load_module+0x680/0x770
[   58.745344]  __do_sys_finit_module+0xbc/0x130
[   58.749761]  __arm64_sys_finit_module+0x2c/0x40
[   58.754356]  el0_svc_common.constprop.0+0x88/0x220
[   58.759216]  do_el0_svc+0x30/0xa0
[   58.762575]  el0_svc+0x28/0x70
[   58.765669]  el0_sync_handler+0x1a4/0x1b0
[   58.769732]  el0_sync+0x178/0x180
[   58.773095] Code: aa0003e1 91366040 910003fd 97ffee21 (d4210000)
[   58.779275] ---[ end trace 29be5b17497bd898 ]---
[   58.783955] note: insmod[1959] exited with preempt_count 1
[   58.791921] ------------[ cut here ]------------

For the sake of it, replace all the other occurences of strcpy() under
bcm2835-audio/ as well.

Signed-off-by: Juerg Haefliger <juergh@canonical.com>
Link: https://lore.kernel.org/r/20210205072502.10907-1-juergh@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/staging/vc04_services/bcm2835-audio/bcm2835-ctl.c | 6 +++---
 drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c | 2 +-
 drivers/staging/vc04_services/bcm2835-audio/bcm2835.c     | 6 +++---
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-ctl.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-ctl.c
index 4c2cae99776b..3703409715da 100644
--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-ctl.c
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-ctl.c
@@ -224,7 +224,7 @@ int snd_bcm2835_new_ctl(struct bcm2835_chip *chip)
 {
 	int err;
 
-	strcpy(chip->card->mixername, "Broadcom Mixer");
+	strscpy(chip->card->mixername, "Broadcom Mixer", sizeof(chip->card->mixername));
 	err = create_ctls(chip, ARRAY_SIZE(snd_bcm2835_ctl), snd_bcm2835_ctl);
 	if (err < 0)
 		return err;
@@ -261,7 +261,7 @@ static const struct snd_kcontrol_new snd_bcm2835_headphones_ctl[] = {
 
 int snd_bcm2835_new_headphones_ctl(struct bcm2835_chip *chip)
 {
-	strcpy(chip->card->mixername, "Broadcom Mixer");
+	strscpy(chip->card->mixername, "Broadcom Mixer", sizeof(chip->card->mixername));
 	return create_ctls(chip, ARRAY_SIZE(snd_bcm2835_headphones_ctl),
 			   snd_bcm2835_headphones_ctl);
 }
@@ -295,7 +295,7 @@ static const struct snd_kcontrol_new snd_bcm2835_hdmi[] = {
 
 int snd_bcm2835_new_hdmi_ctl(struct bcm2835_chip *chip)
 {
-	strcpy(chip->card->mixername, "Broadcom Mixer");
+	strscpy(chip->card->mixername, "Broadcom Mixer", sizeof(chip->card->mixername));
 	return create_ctls(chip, ARRAY_SIZE(snd_bcm2835_hdmi),
 			   snd_bcm2835_hdmi);
 }
diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c
index f783b632141b..096f2c54258a 100644
--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c
@@ -334,7 +334,7 @@ int snd_bcm2835_new_pcm(struct bcm2835_chip *chip, const char *name,
 
 	pcm->private_data = chip;
 	pcm->nonatomic = true;
-	strcpy(pcm->name, name);
+	strscpy(pcm->name, name, sizeof(pcm->name));
 	if (!spdif) {
 		chip->dest = route;
 		chip->volume = 0;
diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
index cf5f80f5ca6b..c250fbef2fa3 100644
--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
@@ -185,9 +185,9 @@ static int snd_add_child_device(struct device *dev,
 		goto error;
 	}
 
-	strcpy(card->driver, audio_driver->driver.name);
-	strcpy(card->shortname, audio_driver->shortname);
-	strcpy(card->longname, audio_driver->longname);
+	strscpy(card->driver, audio_driver->driver.name, sizeof(card->driver));
+	strscpy(card->shortname, audio_driver->shortname, sizeof(card->shortname));
+	strscpy(card->longname, audio_driver->longname, sizeof(card->longname));
 
 	err = audio_driver->newpcm(chip, audio_driver->shortname,
 		audio_driver->route,
-- 
2.30.1

[PATCH 5.10 055/102] brcmfmac: Add DMI nvram filename quirk for Predia Basic tablet

[Greg Kroah-Hartman]

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

[ Upstream commit af4b3a6f36d6c2fc5fca026bccf45e0fdcabddd9 ]

The Predia Basic tablet contains quite generic names in the sys_vendor and
product_name DMI strings, without this patch brcmfmac will try to load:
brcmfmac43340-sdio.Insyde-CherryTrail.txt as nvram file which is a bit
too generic.

Add a DMI quirk so that a unique and clearly identifiable nvram file name
is used on the Predia Basic tablet.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210129171413.139880-1-hdegoede@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 .../net/wireless/broadcom/brcm80211/brcmfmac/dmi.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/dmi.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/dmi.c
index 4aa2561934d7..824a79f24383 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/dmi.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/dmi.c
@@ -40,6 +40,10 @@ static const struct brcmf_dmi_data pov_tab_p1006w_data = {
 	BRCM_CC_43340_CHIP_ID, 2, "pov-tab-p1006w-data"
 };
 
+static const struct brcmf_dmi_data predia_basic_data = {
+	BRCM_CC_43341_CHIP_ID, 2, "predia-basic"
+};
+
 static const struct dmi_system_id dmi_platform_data[] = {
 	{
 		/* ACEPC T8 Cherry Trail Z8350 mini PC */
@@ -111,6 +115,16 @@ static const struct dmi_system_id dmi_platform_data[] = {
 		},
 		.driver_data = (void *)&pov_tab_p1006w_data,
 	},
+	{
+		/* Predia Basic tablet (+ with keyboard dock) */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "CherryTrail"),
+			/* Mx.WT107.KUBNGEA02 with the version-nr dropped */
+			DMI_MATCH(DMI_BIOS_VERSION, "Mx.WT107.KUBNGEA"),
+		},
+		.driver_data = (void *)&predia_basic_data,
+	},
 	{}
 };
 
-- 
2.30.1

[PATCH 5.10 056/102] brcmfmac: Add DMI nvram filename quirk for Voyo winpad A15 tablet

[Greg Kroah-Hartman]

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

[ Upstream commit a338c874d3d9d2463f031e89ae14942929b93db6 ]

The Voyo winpad A15 tablet contains quite generic names in the sys_vendor
and product_name DMI strings, without this patch brcmfmac will try to load:
rcmfmac4330-sdio.To be filled by O.E.M.-To be filled by O.E.M..txt
as nvram file which is a bit too generic.

Add a DMI quirk so that a unique and clearly identifiable nvram file name
is used on the Voyo winpad A15 tablet.

While preparing a matching linux-firmware update I noticed that the nvram
is identical to the nvram used on the Prowise-PT301 tablet, so the new DMI
quirk entry simply points to the already existing Prowise-PT301 nvram file.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210129171413.139880-2-hdegoede@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 .../wireless/broadcom/brcm80211/brcmfmac/dmi.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/dmi.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/dmi.c
index 824a79f24383..6d5188b78f2d 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/dmi.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/dmi.c
@@ -44,6 +44,14 @@ static const struct brcmf_dmi_data predia_basic_data = {
 	BRCM_CC_43341_CHIP_ID, 2, "predia-basic"
 };
 
+/* Note the Voyo winpad A15 tablet uses the same Ampak AP6330 module, with the
+ * exact same nvram file as the Prowise-PT301 tablet. Since the nvram for the
+ * Prowise-PT301 is already in linux-firmware we just point to that here.
+ */
+static const struct brcmf_dmi_data voyo_winpad_a15_data = {
+	BRCM_CC_4330_CHIP_ID, 4, "Prowise-PT301"
+};
+
 static const struct dmi_system_id dmi_platform_data[] = {
 	{
 		/* ACEPC T8 Cherry Trail Z8350 mini PC */
@@ -125,6 +133,16 @@ static const struct dmi_system_id dmi_platform_data[] = {
 		},
 		.driver_data = (void *)&predia_basic_data,
 	},
+	{
+		/* Voyo winpad A15 tablet */
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
+			DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
+			/* Above strings are too generic, also match on BIOS date */
+			DMI_MATCH(DMI_BIOS_DATE, "11/20/2014"),
+		},
+		.driver_data = (void *)&voyo_winpad_a15_data,
+	},
 	{}
 };
 
-- 
2.30.1

[PATCH 5.10 057/102] drm/hisilicon: Fix use-after-free

[Greg Kroah-Hartman]

From: Tian Tao <tiantao6@hisilicon.com>

[ Upstream commit c855af2f9c5c60760fd1bed7889a81bc37d2591d ]

Fix the problem of dev being released twice.
------------[ cut here ]------------
refcount_t: underflow; use-after-free.
WARNING: CPU: 75 PID: 15700 at lib/refcount.c:28 refcount_warn_saturate+0xd4/0x150
CPU: 75 PID: 15700 Comm: rmmod Tainted: G            E     5.10.0-rc3+ #3
Hardware name: Huawei TaiShan 200 (Model 2280)/BC82AMDDA, BIOS 0.88 07/24/2019
pstate: 40400009 (nZcv daif +PAN -UAO -TCO BTYPE=--)
pc : refcount_warn_saturate+0xd4/0x150
lr : refcount_warn_saturate+0xd4/0x150
sp : ffff2028150cbc00
x29: ffff2028150cbc00 x28: ffff2028150121c0
x27: 0000000000000000 x26: 0000000000000000
x25: 0000000000000000 x24: 0000000000000003
x23: 0000000000000000 x22: ffff2028150cbc90
x21: ffff2020038a30a8 x20: ffff2028150cbc90
x19: ffff0020cd938020 x18: 0000000000000010
x17: 0000000000000000 x16: 0000000000000000
x15: ffffffffffffffff x14: ffff2028950cb88f
x13: ffff2028150cb89d x12: 0000000000000000
x11: 0000000005f5e0ff x10: ffff2028150cb800
x9 : 00000000ffffffd0 x8 : 75203b776f6c6672
x7 : ffff800011a6f7c8 x6 : 0000000000000001
x5 : 0000000000000000 x4 : 0000000000000000
x3 : 0000000000000000 x2 : ffff202ffe2f9dc0
x1 : ffffa02fecf40000 x0 : 0000000000000026
Call trace:
 refcount_warn_saturate+0xd4/0x150
 devm_drm_dev_init_release+0x50/0x70
 devm_action_release+0x20/0x30
 release_nodes+0x13c/0x218
 devres_release_all+0x80/0x170
 device_release_driver_internal+0x128/0x1f0
 driver_detach+0x6c/0xe0
 bus_remove_driver+0x74/0x100
 driver_unregister+0x34/0x60
 pci_unregister_driver+0x24/0xd8
 hibmc_pci_driver_exit+0x14/0xe858 [hibmc_drm]
 __arm64_sys_delete_module+0x1fc/0x2d0
 el0_svc_common.constprop.3+0xa8/0x188
 do_el0_svc+0x80/0xa0
 el0_sync_handler+0x8c/0xb0
 el0_sync+0x15c/0x180
CPU: 75 PID: 15700 Comm: rmmod Tainted: G            E     5.10.0-rc3+ #3
Hardware name: Huawei TaiShan 200 (Model 2280)/BC82AMDDA, BIOS 0.88 07/24/2019
Call trace:
 dump_backtrace+0x0/0x208
 show_stack+0x2c/0x40
 dump_stack+0xd8/0x10c
 __warn+0xac/0x128
 report_bug+0xcc/0x180
 bug_handler+0x24/0x78
 call_break_hook+0x80/0xa0
 brk_handler+0x28/0x68
 do_debug_exception+0x9c/0x148
 el1_sync_handler+0x7c/0x128
 el1_sync+0x80/0x100
 refcount_warn_saturate+0xd4/0x150
 devm_drm_dev_init_release+0x50/0x70
 devm_action_release+0x20/0x30
 release_nodes+0x13c/0x218
 devres_release_all+0x80/0x170
 device_release_driver_internal+0x128/0x1f0
 driver_detach+0x6c/0xe0
 bus_remove_driver+0x74/0x100
 driver_unregister+0x34/0x60
 pci_unregister_driver+0x24/0xd8
 hibmc_pci_driver_exit+0x14/0xe858 [hibmc_drm]
 __arm64_sys_delete_module+0x1fc/0x2d0
 el0_svc_common.constprop.3+0xa8/0x188
 do_el0_svc+0x80/0xa0
 el0_sync_handler+0x8c/0xb0
 el0_sync+0x15c/0x180
---[ end trace 00718630d6e5ff18 ]---

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1607941973-32287-1-git-send-email-tiantao6@hisilicon.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
index 085d1b2fa8c0..d3485f742acc 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
@@ -368,7 +368,6 @@ static void hibmc_pci_remove(struct pci_dev *pdev)
 
 	drm_dev_unregister(dev);
 	hibmc_unload(dev);
-	drm_dev_put(dev);
 }
 
 static struct pci_device_id hibmc_pci_table[] = {
-- 
2.30.1

[PATCH 5.10 058/102] crypto: tcrypt - avoid signed overflow in byte count

[Greg Kroah-Hartman]

From: Ard Biesheuvel <ardb@kernel.org>

[ Upstream commit 303fd3e1c771077e32e96e5788817f025f0067e2 ]

The signed long type used for printing the number of bytes processed in
tcrypt benchmarks limits the range to -/+ 2 GiB, which is not sufficient
to cover the performance of common accelerated ciphers such as AES-NI
when benchmarked with sec=1. So switch to u64 instead.

While at it, fix up a missing printk->pr_cont conversion in the AEAD
benchmark.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 crypto/tcrypt.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index eea0f453cfb6..8609174e036e 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -199,8 +199,8 @@ static int test_mb_aead_jiffies(struct test_mb_aead_data *data, int enc,
 			goto out;
 	}
 
-	pr_cont("%d operations in %d seconds (%ld bytes)\n",
-		bcount * num_mb, secs, (long)bcount * blen * num_mb);
+	pr_cont("%d operations in %d seconds (%llu bytes)\n",
+		bcount * num_mb, secs, (u64)bcount * blen * num_mb);
 
 out:
 	kfree(rc);
@@ -469,8 +469,8 @@ static int test_aead_jiffies(struct aead_request *req, int enc,
 			return ret;
 	}
 
-	printk("%d operations in %d seconds (%ld bytes)\n",
-	       bcount, secs, (long)bcount * blen);
+	pr_cont("%d operations in %d seconds (%llu bytes)\n",
+	        bcount, secs, (u64)bcount * blen);
 	return 0;
 }
 
@@ -760,8 +760,8 @@ static int test_mb_ahash_jiffies(struct test_mb_ahash_data *data, int blen,
 			goto out;
 	}
 
-	pr_cont("%d operations in %d seconds (%ld bytes)\n",
-		bcount * num_mb, secs, (long)bcount * blen * num_mb);
+	pr_cont("%d operations in %d seconds (%llu bytes)\n",
+		bcount * num_mb, secs, (u64)bcount * blen * num_mb);
 
 out:
 	kfree(rc);
@@ -1197,8 +1197,8 @@ static int test_mb_acipher_jiffies(struct test_mb_skcipher_data *data, int enc,
 			goto out;
 	}
 
-	pr_cont("%d operations in %d seconds (%ld bytes)\n",
-		bcount * num_mb, secs, (long)bcount * blen * num_mb);
+	pr_cont("%d operations in %d seconds (%llu bytes)\n",
+		bcount * num_mb, secs, (u64)bcount * blen * num_mb);
 
 out:
 	kfree(rc);
@@ -1435,8 +1435,8 @@ static int test_acipher_jiffies(struct skcipher_request *req, int enc,
 			return ret;
 	}
 
-	pr_cont("%d operations in %d seconds (%ld bytes)\n",
-		bcount, secs, (long)bcount * blen);
+	pr_cont("%d operations in %d seconds (%llu bytes)\n",
+		bcount, secs, (u64)bcount * blen);
 	return 0;
 }
 
-- 
2.30.1

[PATCH 5.10 059/102] fs: make unlazy_walk() error handling consistent

[Greg Kroah-Hartman]

From: Jens Axboe <axboe@kernel.dk>

[ Upstream commit e36cffed20a324e116f329a94061ae30dd26fb51 ]

Most callers check for non-zero return, and assume it's -ECHILD (which
it always will be). One caller uses the actual error return. Clean this
up and make it fully consistent, by having unlazy_walk() return a bool
instead. Rename it to try_to_unlazy() and return true on success, and
failure on error. That's easier to read.

No functional changes in this patch.

Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/namei.c | 43 +++++++++++++++++--------------------------
 1 file changed, 17 insertions(+), 26 deletions(-)

diff --git a/fs/namei.c b/fs/namei.c
index d4a6dd772303..7af66d5a0c1b 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -669,17 +669,17 @@ static bool legitimize_root(struct nameidata *nd)
  */
 
 /**
- * unlazy_walk - try to switch to ref-walk mode.
+ * try_to_unlazy - try to switch to ref-walk mode.
  * @nd: nameidata pathwalk data
- * Returns: 0 on success, -ECHILD on failure
+ * Returns: true on success, false on failure
  *
- * unlazy_walk attempts to legitimize the current nd->path and nd->root
+ * try_to_unlazy attempts to legitimize the current nd->path and nd->root
  * for ref-walk mode.
  * Must be called from rcu-walk context.
- * Nothing should touch nameidata between unlazy_walk() failure and
+ * Nothing should touch nameidata between try_to_unlazy() failure and
  * terminate_walk().
  */
-static int unlazy_walk(struct nameidata *nd)
+static bool try_to_unlazy(struct nameidata *nd)
 {
 	struct dentry *parent = nd->path.dentry;
 
@@ -694,14 +694,14 @@ static int unlazy_walk(struct nameidata *nd)
 		goto out;
 	rcu_read_unlock();
 	BUG_ON(nd->inode != parent->d_inode);
-	return 0;
+	return true;
 
 out1:
 	nd->path.mnt = NULL;
 	nd->path.dentry = NULL;
 out:
 	rcu_read_unlock();
-	return -ECHILD;
+	return false;
 }
 
 /**
@@ -792,7 +792,7 @@ static int complete_walk(struct nameidata *nd)
 		 */
 		if (!(nd->flags & (LOOKUP_ROOT | LOOKUP_IS_SCOPED)))
 			nd->root.mnt = NULL;
-		if (unlikely(unlazy_walk(nd)))
+		if (!try_to_unlazy(nd))
 			return -ECHILD;
 	}
 
@@ -1466,7 +1466,7 @@ static struct dentry *lookup_fast(struct nameidata *nd,
 		unsigned seq;
 		dentry = __d_lookup_rcu(parent, &nd->last, &seq);
 		if (unlikely(!dentry)) {
-			if (unlazy_walk(nd))
+			if (!try_to_unlazy(nd))
 				return ERR_PTR(-ECHILD);
 			return NULL;
 		}
@@ -1567,10 +1567,8 @@ static inline int may_lookup(struct nameidata *nd)
 {
 	if (nd->flags & LOOKUP_RCU) {
 		int err = inode_permission(nd->inode, MAY_EXEC|MAY_NOT_BLOCK);
-		if (err != -ECHILD)
+		if (err != -ECHILD || !try_to_unlazy(nd))
 			return err;
-		if (unlazy_walk(nd))
-			return -ECHILD;
 	}
 	return inode_permission(nd->inode, MAY_EXEC);
 }
@@ -1592,7 +1590,7 @@ static int reserve_stack(struct nameidata *nd, struct path *link, unsigned seq)
 		// unlazy even if we fail to grab the link - cleanup needs it
 		bool grabbed_link = legitimize_path(nd, link, seq);
 
-		if (unlazy_walk(nd) != 0 || !grabbed_link)
+		if (!try_to_unlazy(nd) != 0 || !grabbed_link)
 			return -ECHILD;
 
 		if (nd_alloc_stack(nd))
@@ -1634,7 +1632,7 @@ static const char *pick_link(struct nameidata *nd, struct path *link,
 		touch_atime(&last->link);
 		cond_resched();
 	} else if (atime_needs_update(&last->link, inode)) {
-		if (unlikely(unlazy_walk(nd)))
+		if (!try_to_unlazy(nd))
 			return ERR_PTR(-ECHILD);
 		touch_atime(&last->link);
 	}
@@ -1651,11 +1649,8 @@ static const char *pick_link(struct nameidata *nd, struct path *link,
 		get = inode->i_op->get_link;
 		if (nd->flags & LOOKUP_RCU) {
 			res = get(NULL, inode, &last->done);
-			if (res == ERR_PTR(-ECHILD)) {
-				if (unlikely(unlazy_walk(nd)))
-					return ERR_PTR(-ECHILD);
+			if (res == ERR_PTR(-ECHILD) && try_to_unlazy(nd))
 				res = get(link->dentry, inode, &last->done);
-			}
 		} else {
 			res = get(link->dentry, inode, &last->done);
 		}
@@ -2193,7 +2188,7 @@ OK:
 		}
 		if (unlikely(!d_can_lookup(nd->path.dentry))) {
 			if (nd->flags & LOOKUP_RCU) {
-				if (unlazy_walk(nd))
+				if (!try_to_unlazy(nd))
 					return -ECHILD;
 			}
 			return -ENOTDIR;
@@ -3127,7 +3122,6 @@ static const char *open_last_lookups(struct nameidata *nd,
 	struct inode *inode;
 	struct dentry *dentry;
 	const char *res;
-	int error;
 
 	nd->flags |= op->intent;
 
@@ -3151,9 +3145,8 @@ static const char *open_last_lookups(struct nameidata *nd,
 	} else {
 		/* create side of things */
 		if (nd->flags & LOOKUP_RCU) {
-			error = unlazy_walk(nd);
-			if (unlikely(error))
-				return ERR_PTR(error);
+			if (!try_to_unlazy(nd))
+				return ERR_PTR(-ECHILD);
 		}
 		audit_inode(nd->name, dir, AUDIT_INODE_PARENT);
 		/* trailing slashes? */
@@ -3162,9 +3155,7 @@ static const char *open_last_lookups(struct nameidata *nd,
 	}
 
 	if (open_flag & (O_CREAT | O_TRUNC | O_WRONLY | O_RDWR)) {
-		error = mnt_want_write(nd->path.mnt);
-		if (!error)
-			got_write = true;
+		got_write = !mnt_want_write(nd->path.mnt);
 		/*
 		 * do _not_ fail yet - we might not need that or fail with
 		 * a different error; let lookup_open() decide; we'll be
-- 
2.30.1

[PATCH 5.10 060/102] drm/amdgpu: Add check to prevent IH overflow

[Greg Kroah-Hartman]

From: Defang Bo <bodefang@126.com>

[ Upstream commit e4180c4253f3f2da09047f5139959227f5cf1173 ]

Similar to commit <b82175750131>("drm/amdgpu: fix IH overflow on Vega10 v2").
When an ring buffer overflow happens the appropriate bit is set in the WPTR
register which is also written back to memory. But clearing the bit in the
WPTR doesn't trigger another memory writeback.

So what can happen is that we end up processing the buffer overflow over and
over again because the bit is never cleared. Resulting in a random system
lockup because of an infinite loop in an interrupt handler.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Defang Bo <bodefang@126.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/amd/amdgpu/cz_ih.c      | 37 ++++++++++++++++---------
 drivers/gpu/drm/amd/amdgpu/iceland_ih.c | 36 +++++++++++++++---------
 drivers/gpu/drm/amd/amdgpu/tonga_ih.c   | 37 ++++++++++++++++---------
 3 files changed, 71 insertions(+), 39 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/cz_ih.c b/drivers/gpu/drm/amd/amdgpu/cz_ih.c
index 1dca0cabc326..13520d173296 100644
--- a/drivers/gpu/drm/amd/amdgpu/cz_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/cz_ih.c
@@ -193,19 +193,30 @@ static u32 cz_ih_get_wptr(struct amdgpu_device *adev,
 
 	wptr = le32_to_cpu(*ih->wptr_cpu);
 
-	if (REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) {
-		wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0);
-		/* When a ring buffer overflow happen start parsing interrupt
-		 * from the last not overwritten vector (wptr + 16). Hopefully
-		 * this should allow us to catchup.
-		 */
-		dev_warn(adev->dev, "IH ring buffer overflow (0x%08X, 0x%08X, 0x%08X)\n",
-			wptr, ih->rptr, (wptr + 16) & ih->ptr_mask);
-		ih->rptr = (wptr + 16) & ih->ptr_mask;
-		tmp = RREG32(mmIH_RB_CNTL);
-		tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1);
-		WREG32(mmIH_RB_CNTL, tmp);
-	}
+	if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW))
+		goto out;
+
+	/* Double check that the overflow wasn't already cleared. */
+	wptr = RREG32(mmIH_RB_WPTR);
+
+	if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW))
+		goto out;
+
+	wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0);
+
+	/* When a ring buffer overflow happen start parsing interrupt
+	 * from the last not overwritten vector (wptr + 16). Hopefully
+	 * this should allow us to catchup.
+	 */
+	dev_warn(adev->dev, "IH ring buffer overflow (0x%08X, 0x%08X, 0x%08X)\n",
+		wptr, ih->rptr, (wptr + 16) & ih->ptr_mask);
+	ih->rptr = (wptr + 16) & ih->ptr_mask;
+	tmp = RREG32(mmIH_RB_CNTL);
+	tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1);
+	WREG32(mmIH_RB_CNTL, tmp);
+
+
+out:
 	return (wptr & ih->ptr_mask);
 }
 
diff --git a/drivers/gpu/drm/amd/amdgpu/iceland_ih.c b/drivers/gpu/drm/amd/amdgpu/iceland_ih.c
index a13dd9a51149..7d165f024f07 100644
--- a/drivers/gpu/drm/amd/amdgpu/iceland_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/iceland_ih.c
@@ -193,19 +193,29 @@ static u32 iceland_ih_get_wptr(struct amdgpu_device *adev,
 
 	wptr = le32_to_cpu(*ih->wptr_cpu);
 
-	if (REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) {
-		wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0);
-		/* When a ring buffer overflow happen start parsing interrupt
-		 * from the last not overwritten vector (wptr + 16). Hopefully
-		 * this should allow us to catchup.
-		 */
-		dev_warn(adev->dev, "IH ring buffer overflow (0x%08X, 0x%08X, 0x%08X)\n",
-			 wptr, ih->rptr, (wptr + 16) & ih->ptr_mask);
-		ih->rptr = (wptr + 16) & ih->ptr_mask;
-		tmp = RREG32(mmIH_RB_CNTL);
-		tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1);
-		WREG32(mmIH_RB_CNTL, tmp);
-	}
+	if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW))
+		goto out;
+
+	/* Double check that the overflow wasn't already cleared. */
+	wptr = RREG32(mmIH_RB_WPTR);
+
+	if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW))
+		goto out;
+
+	wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0);
+	/* When a ring buffer overflow happen start parsing interrupt
+	 * from the last not overwritten vector (wptr + 16). Hopefully
+	 * this should allow us to catchup.
+	 */
+	dev_warn(adev->dev, "IH ring buffer overflow (0x%08X, 0x%08X, 0x%08X)\n",
+		wptr, ih->rptr, (wptr + 16) & ih->ptr_mask);
+	ih->rptr = (wptr + 16) & ih->ptr_mask;
+	tmp = RREG32(mmIH_RB_CNTL);
+	tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1);
+	WREG32(mmIH_RB_CNTL, tmp);
+
+
+out:
 	return (wptr & ih->ptr_mask);
 }
 
diff --git a/drivers/gpu/drm/amd/amdgpu/tonga_ih.c b/drivers/gpu/drm/amd/amdgpu/tonga_ih.c
index e40140bf6699..db0a3bda13fb 100644
--- a/drivers/gpu/drm/amd/amdgpu/tonga_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/tonga_ih.c
@@ -195,19 +195,30 @@ static u32 tonga_ih_get_wptr(struct amdgpu_device *adev,
 
 	wptr = le32_to_cpu(*ih->wptr_cpu);
 
-	if (REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) {
-		wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0);
-		/* When a ring buffer overflow happen start parsing interrupt
-		 * from the last not overwritten vector (wptr + 16). Hopefully
-		 * this should allow us to catchup.
-		 */
-		dev_warn(adev->dev, "IH ring buffer overflow (0x%08X, 0x%08X, 0x%08X)\n",
-			 wptr, ih->rptr, (wptr + 16) & ih->ptr_mask);
-		ih->rptr = (wptr + 16) & ih->ptr_mask;
-		tmp = RREG32(mmIH_RB_CNTL);
-		tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1);
-		WREG32(mmIH_RB_CNTL, tmp);
-	}
+	if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW))
+		goto out;
+
+	/* Double check that the overflow wasn't already cleared. */
+	wptr = RREG32(mmIH_RB_WPTR);
+
+	if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW))
+		goto out;
+
+	wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0);
+
+	/* When a ring buffer overflow happen start parsing interrupt
+	 * from the last not overwritten vector (wptr + 16). Hopefully
+	 * this should allow us to catchup.
+	 */
+
+	dev_warn(adev->dev, "IH ring buffer overflow (0x%08X, 0x%08X, 0x%08X)\n",
+		wptr, ih->rptr, (wptr + 16) & ih->ptr_mask);
+	ih->rptr = (wptr + 16) & ih->ptr_mask;
+	tmp = RREG32(mmIH_RB_CNTL);
+	tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1);
+	WREG32(mmIH_RB_CNTL, tmp);
+
+out:
 	return (wptr & ih->ptr_mask);
 }
 
-- 
2.30.1

[PATCH 5.10 061/102] PCI: Add a REBAR size quirk for Sapphire RX 5600 XT Pulse

[Greg Kroah-Hartman]

From: Nirmoy Das <nirmoy.das@amd.com>

[ Upstream commit 907830b0fc9e374d00f3c83de5e426157b482c01 ]

RX 5600 XT Pulse advertises support for BAR 0 being 256MB, 512MB,
or 1GB, but it also supports 2GB, 4GB, and 8GB. Add a rebar
size quirk so that the BAR 0 is big enough to cover complete VARM.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Nirmoy Das <nirmoy.das@amd.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20210107175017.15893-5-nirmoy.das@amd.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pci/pci.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 6427cbd0a5be..5c9345072510 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -3577,7 +3577,14 @@ u32 pci_rebar_get_possible_sizes(struct pci_dev *pdev, int bar)
 		return 0;
 
 	pci_read_config_dword(pdev, pos + PCI_REBAR_CAP, &cap);
-	return (cap & PCI_REBAR_CAP_SIZES) >> 4;
+	cap &= PCI_REBAR_CAP_SIZES;
+
+	/* Sapphire RX 5600 XT Pulse has an invalid cap dword for BAR 0 */
+	if (pdev->vendor == PCI_VENDOR_ID_ATI && pdev->device == 0x731f &&
+	    bar == 0 && cap == 0x7000)
+		cap = 0x3f000;
+
+	return cap >> 4;
 }
 
 /**
-- 
2.30.1

[PATCH 5.10 062/102] ASoC: Intel: bytcr_rt5640: Add new BYT_RT5640_NO_SPEAKERS quirk-flag

[Greg Kroah-Hartman]

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

[ Upstream commit 1851ccf9e155b2a6f6cca1a7bd49325f5efbd5d2 ]

Some devices, like mini PCs/media/top-set boxes do not have any speakers
at all, an example of the is the Mele PCG03 Mini PC.

Add a new BYT_RT5640_NO_SPEAKERS quirk-flag which when sets does not add
speaker routes and modifies the components and the (optional) long_name
strings to reflect that there are no speakers.

Cc: Rasmus Porsager <rasmus@beat.dk>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210109210119.159032-2-hdegoede@redhat.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/intel/boards/bytcr_rt5640.c | 26 +++++++++++++++++++-------
 1 file changed, 19 insertions(+), 7 deletions(-)

diff --git a/sound/soc/intel/boards/bytcr_rt5640.c b/sound/soc/intel/boards/bytcr_rt5640.c
index f790514a147d..db3633de9122 100644
--- a/sound/soc/intel/boards/bytcr_rt5640.c
+++ b/sound/soc/intel/boards/bytcr_rt5640.c
@@ -71,6 +71,7 @@ enum {
 #define BYT_RT5640_SSP0_AIF2		BIT(21)
 #define BYT_RT5640_MCLK_EN		BIT(22)
 #define BYT_RT5640_MCLK_25MHZ		BIT(23)
+#define BYT_RT5640_NO_SPEAKERS		BIT(24)
 
 #define BYTCR_INPUT_DEFAULTS				\
 	(BYT_RT5640_IN3_MAP |				\
@@ -132,6 +133,8 @@ static void log_quirks(struct device *dev)
 		dev_info(dev, "quirk JD_NOT_INV enabled\n");
 	if (byt_rt5640_quirk & BYT_RT5640_MONO_SPEAKER)
 		dev_info(dev, "quirk MONO_SPEAKER enabled\n");
+	if (byt_rt5640_quirk & BYT_RT5640_NO_SPEAKERS)
+		dev_info(dev, "quirk NO_SPEAKERS enabled\n");
 	if (byt_rt5640_quirk & BYT_RT5640_DIFF_MIC)
 		dev_info(dev, "quirk DIFF_MIC enabled\n");
 	if (byt_rt5640_quirk & BYT_RT5640_SSP0_AIF1) {
@@ -934,7 +937,7 @@ static int byt_rt5640_init(struct snd_soc_pcm_runtime *runtime)
 		ret = snd_soc_dapm_add_routes(&card->dapm,
 					byt_rt5640_mono_spk_map,
 					ARRAY_SIZE(byt_rt5640_mono_spk_map));
-	} else {
+	} else if (!(byt_rt5640_quirk & BYT_RT5640_NO_SPEAKERS)) {
 		ret = snd_soc_dapm_add_routes(&card->dapm,
 					byt_rt5640_stereo_spk_map,
 					ARRAY_SIZE(byt_rt5640_stereo_spk_map));
@@ -1179,6 +1182,7 @@ struct acpi_chan_package {   /* ACPICA seems to require 64 bit integers */
 static int snd_byt_rt5640_mc_probe(struct platform_device *pdev)
 {
 	static const char * const map_name[] = { "dmic1", "dmic2", "in1", "in3" };
+	__maybe_unused const char *spk_type;
 	const struct dmi_system_id *dmi_id;
 	struct byt_rt5640_private *priv;
 	struct snd_soc_acpi_mach *mach;
@@ -1186,7 +1190,7 @@ static int snd_byt_rt5640_mc_probe(struct platform_device *pdev)
 	struct acpi_device *adev;
 	int ret_val = 0;
 	int dai_index = 0;
-	int i;
+	int i, cfg_spk;
 
 	is_bytcr = false;
 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
@@ -1325,16 +1329,24 @@ static int snd_byt_rt5640_mc_probe(struct platform_device *pdev)
 		}
 	}
 
+	if (byt_rt5640_quirk & BYT_RT5640_NO_SPEAKERS) {
+		cfg_spk = 0;
+		spk_type = "none";
+	} else if (byt_rt5640_quirk & BYT_RT5640_MONO_SPEAKER) {
+		cfg_spk = 1;
+		spk_type = "mono";
+	} else {
+		cfg_spk = 2;
+		spk_type = "stereo";
+	}
+
 	snprintf(byt_rt5640_components, sizeof(byt_rt5640_components),
-		 "cfg-spk:%s cfg-mic:%s",
-		 (byt_rt5640_quirk & BYT_RT5640_MONO_SPEAKER) ? "1" : "2",
+		 "cfg-spk:%d cfg-mic:%s", cfg_spk,
 		 map_name[BYT_RT5640_MAP(byt_rt5640_quirk)]);
 	byt_rt5640_card.components = byt_rt5640_components;
 #if !IS_ENABLED(CONFIG_SND_SOC_INTEL_USER_FRIENDLY_LONG_NAMES)
 	snprintf(byt_rt5640_long_name, sizeof(byt_rt5640_long_name),
-		 "bytcr-rt5640-%s-spk-%s-mic",
-		 (byt_rt5640_quirk & BYT_RT5640_MONO_SPEAKER) ?
-			"mono" : "stereo",
+		 "bytcr-rt5640-%s-spk-%s-mic", spk_type,
 		 map_name[BYT_RT5640_MAP(byt_rt5640_quirk)]);
 	byt_rt5640_card.long_name = byt_rt5640_long_name;
 #endif
-- 
2.30.1

[PATCH 5.10 063/102] drm/amd/display: Guard against NULL pointer deref when get_i2c_info fails

[Greg Kroah-Hartman]

From: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>

[ Upstream commit 44a09e3d95bd2b7b0c224100f78f335859c4e193 ]

[Why]
If the BIOS table is invalid or corrupt then get_i2c_info can fail
and we dereference a NULL pointer.

[How]
Check that ddc_pin is not NULL before using it and log an error if it
is because this is unexpected.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Eric Yang <eric.yang2@amd.com>
Acked-by: Anson Jacob <anson.jacob@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/amd/display/dc/core/dc_link.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index e1e5d81a5e43..21c7b642a8b4 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -1454,6 +1454,11 @@ static bool dc_link_construct(struct dc_link *link,
 		goto ddc_create_fail;
 	}
 
+	if (!link->ddc->ddc_pin) {
+		DC_ERROR("Failed to get I2C info for connector!\n");
+		goto ddc_create_fail;
+	}
+
 	link->ddc_hw_inst =
 		dal_ddc_get_line(dal_ddc_service_get_ddc_pin(link->ddc));
 
-- 
2.30.1

[PATCH 5.10 064/102] drm/amd/amdgpu: add error handling to amdgpu_virt_read_pf2vf_data

[Greg Kroah-Hartman]

From: Jingwen Chen <Jingwen.Chen2@amd.com>

[ Upstream commit 64dcf2f01d59cf9fad19b1a387bd39736a8f4d69 ]

[Why]
when vram lost happened in guest, try to write vram can lead to
kernel stuck.

[How]
When the readback data is invalid, don't do write work, directly
reschedule a new work.

Signed-off-by: Jingwen Chen <Jingwen.Chen2@amd.com>
Reviewed-by: Monk Liu<monk.liu@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_virt.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index d0aea5e39531..e7678ba8fdcf 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -558,10 +558,14 @@ static int amdgpu_virt_write_vf2pf_data(struct amdgpu_device *adev)
 void amdgpu_virt_update_vf2pf_work_item(struct work_struct *work)
 {
 	struct amdgpu_device *adev = container_of(work, struct amdgpu_device, virt.vf2pf_work.work);
+	int ret;
 
-	amdgpu_virt_read_pf2vf_data(adev);
+	ret = amdgpu_virt_read_pf2vf_data(adev);
+	if (ret)
+		goto out;
 	amdgpu_virt_write_vf2pf_data(adev);
 
+out:
 	schedule_delayed_work(&(adev->virt.vf2pf_work), adev->virt.vf2pf_update_interval_ms);
 }
 
-- 
2.30.1

[PATCH 5.10 065/102] media: uvcvideo: Allow entities with no pads

[Greg Kroah-Hartman]

From: Ricardo Ribalda <ribalda@chromium.org>

[ Upstream commit 7532dad6634031d083df7af606fac655b8d08b5c ]

Avoid an underflow while calculating the number of inputs for entities
with zero pads.

Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/usb/uvc/uvc_driver.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index ddb9eaa11be7..5ad528264135 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -1028,7 +1028,10 @@ static struct uvc_entity *uvc_alloc_entity(u16 type, u8 id,
 	unsigned int i;
 
 	extra_size = roundup(extra_size, sizeof(*entity->pads));
-	num_inputs = (type & UVC_TERM_OUTPUT) ? num_pads : num_pads - 1;
+	if (num_pads)
+		num_inputs = type & UVC_TERM_OUTPUT ? num_pads : num_pads - 1;
+	else
+		num_inputs = 0;
 	size = sizeof(*entity) + extra_size + sizeof(*entity->pads) * num_pads
 	     + num_inputs;
 	entity = kzalloc(size, GFP_KERNEL);
@@ -1044,7 +1047,7 @@ static struct uvc_entity *uvc_alloc_entity(u16 type, u8 id,
 
 	for (i = 0; i < num_inputs; ++i)
 		entity->pads[i].flags = MEDIA_PAD_FL_SINK;
-	if (!UVC_ENTITY_IS_OTERM(entity))
+	if (!UVC_ENTITY_IS_OTERM(entity) && num_pads)
 		entity->pads[num_pads-1].flags = MEDIA_PAD_FL_SOURCE;
 
 	entity->bNrInPins = num_inputs;
-- 
2.30.1

[PATCH 5.10 066/102] f2fs: handle unallocated section and zone on pinned/atgc

[Greg Kroah-Hartman]

From: Jaegeuk Kim <jaegeuk@kernel.org>

[ Upstream commit 632faca72938f9f63049e48a8c438913828ac7a9 ]

If we have large section/zone, unallocated segment makes them corrupted.

E.g.,

  - Pinned file:       -1 119304647 119304647
  - ATGC   data:       -1 119304647 119304647

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/segment.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index e81eb0748e2a..229814b4f4a6 100644
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -101,11 +101,11 @@ static inline void sanity_check_seg_type(struct f2fs_sb_info *sbi,
 #define BLKS_PER_SEC(sbi)					\
 	((sbi)->segs_per_sec * (sbi)->blocks_per_seg)
 #define GET_SEC_FROM_SEG(sbi, segno)				\
-	((segno) / (sbi)->segs_per_sec)
+	(((segno) == -1) ? -1: (segno) / (sbi)->segs_per_sec)
 #define GET_SEG_FROM_SEC(sbi, secno)				\
 	((secno) * (sbi)->segs_per_sec)
 #define GET_ZONE_FROM_SEC(sbi, secno)				\
-	((secno) / (sbi)->secs_per_zone)
+	(((secno) == -1) ? -1: (secno) / (sbi)->secs_per_zone)
 #define GET_ZONE_FROM_SEG(sbi, segno)				\
 	GET_ZONE_FROM_SEC(sbi, GET_SEC_FROM_SEG(sbi, segno))
 
-- 
2.30.1

[PATCH 5.10 067/102] f2fs: fix to set/clear I_LINKABLE under i_lock

[Greg Kroah-Hartman]

From: Chao Yu <yuchao0@huawei.com>

[ Upstream commit 46085f37fc9e12d5c3539fb768b5ad7951e72acf ]

fsstress + fault injection test case reports a warning message as
below:

WARNING: CPU: 13 PID: 6226 at fs/inode.c:361 inc_nlink+0x32/0x40
Call Trace:
 f2fs_init_inode_metadata+0x25c/0x4a0 [f2fs]
 f2fs_add_inline_entry+0x153/0x3b0 [f2fs]
 f2fs_add_dentry+0x75/0x80 [f2fs]
 f2fs_do_add_link+0x108/0x160 [f2fs]
 f2fs_rename2+0x6ab/0x14f0 [f2fs]
 vfs_rename+0x70c/0x940
 do_renameat2+0x4d8/0x4f0
 __x64_sys_renameat2+0x4b/0x60
 do_syscall_64+0x33/0x80
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Following race case can cause this:
Thread A				Kworker
- f2fs_rename
 - f2fs_create_whiteout
  - __f2fs_tmpfile
   - f2fs_i_links_write
    - f2fs_mark_inode_dirty_sync
     - mark_inode_dirty_sync
					- writeback_single_inode
					 - __writeback_single_inode
					  - spin_lock(&inode->i_lock)
   - inode->i_state |= I_LINKABLE
					  - inode->i_state &= ~dirty
					  - spin_unlock(&inode->i_lock)
 - f2fs_add_link
  - f2fs_do_add_link
   - f2fs_add_dentry
    - f2fs_add_inline_entry
     - f2fs_init_inode_metadata
      - f2fs_i_links_write
       - inc_nlink
        - WARN_ON(!(inode->i_state & I_LINKABLE))

Fix to add i_lock to avoid i_state update race condition.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/f2fs/namei.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index 8fa37d1434de..5f7ab4f11322 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -854,7 +854,11 @@ static int __f2fs_tmpfile(struct inode *dir, struct dentry *dentry,
 
 	if (whiteout) {
 		f2fs_i_links_write(inode, false);
+
+		spin_lock(&inode->i_lock);
 		inode->i_state |= I_LINKABLE;
+		spin_unlock(&inode->i_lock);
+
 		*whiteout = inode;
 	} else {
 		d_tmpfile(dentry, inode);
@@ -1040,7 +1044,11 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
 		err = f2fs_add_link(old_dentry, whiteout);
 		if (err)
 			goto put_out_dir;
+
+		spin_lock(&whiteout->i_lock);
 		whiteout->i_state &= ~I_LINKABLE;
+		spin_unlock(&whiteout->i_lock);
+
 		iput(whiteout);
 	}
 
-- 
2.30.1

[PATCH 5.10 068/102] nvme-core: add cancel tagset helpers

[Greg Kroah-Hartman]

From: Chao Leng <lengchao@huawei.com>

[ Upstream commit 2547906982e2e6a0d42f8957f55af5bb51a7e55f ]

Add nvme_cancel_tagset and nvme_cancel_admin_tagset for tear down and
reconnection error handling.

Signed-off-by: Chao Leng <lengchao@huawei.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/nvme/host/core.c | 20 ++++++++++++++++++++
 drivers/nvme/host/nvme.h |  2 ++
 2 files changed, 22 insertions(+)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 4ec5f05dabe1..e1e574ecf031 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -351,6 +351,26 @@ bool nvme_cancel_request(struct request *req, void *data, bool reserved)
 }
 EXPORT_SYMBOL_GPL(nvme_cancel_request);
 
+void nvme_cancel_tagset(struct nvme_ctrl *ctrl)
+{
+	if (ctrl->tagset) {
+		blk_mq_tagset_busy_iter(ctrl->tagset,
+				nvme_cancel_request, ctrl);
+		blk_mq_tagset_wait_completed_request(ctrl->tagset);
+	}
+}
+EXPORT_SYMBOL_GPL(nvme_cancel_tagset);
+
+void nvme_cancel_admin_tagset(struct nvme_ctrl *ctrl)
+{
+	if (ctrl->admin_tagset) {
+		blk_mq_tagset_busy_iter(ctrl->admin_tagset,
+				nvme_cancel_request, ctrl);
+		blk_mq_tagset_wait_completed_request(ctrl->admin_tagset);
+	}
+}
+EXPORT_SYMBOL_GPL(nvme_cancel_admin_tagset);
+
 bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,
 		enum nvme_ctrl_state new_state)
 {
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 567f7ad18a91..f843540cc238 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -571,6 +571,8 @@ static inline bool nvme_is_aen_req(u16 qid, __u16 command_id)
 
 void nvme_complete_rq(struct request *req);
 bool nvme_cancel_request(struct request *req, void *data, bool reserved);
+void nvme_cancel_tagset(struct nvme_ctrl *ctrl);
+void nvme_cancel_admin_tagset(struct nvme_ctrl *ctrl);
 bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,
 		enum nvme_ctrl_state new_state);
 bool nvme_wait_reset(struct nvme_ctrl *ctrl);
-- 
2.30.1

[PATCH 5.10 069/102] nvme-rdma: add clean action for failed reconnection

[Greg Kroah-Hartman]

From: Chao Leng <lengchao@huawei.com>

[ Upstream commit 958dc1d32c80566f58d18f05ef1f05bd32d172c1 ]

A crash happens when inject failed reconnection.
If reconnect failed after start io queues, the queues will be unquiesced
and new requests continue to be delivered. Reconnection error handling
process directly free queues without cancel suspend requests. The
suppend request will time out, and then crash due to use the queue
after free.

Add sync queues and cancel suppend requests for reconnection error
handling.

Signed-off-by: Chao Leng <lengchao@huawei.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/nvme/host/rdma.c | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index 4eb867804b6a..195703013272 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -919,12 +919,16 @@ static int nvme_rdma_configure_admin_queue(struct nvme_rdma_ctrl *ctrl,
 
 	error = nvme_init_identify(&ctrl->ctrl);
 	if (error)
-		goto out_stop_queue;
+		goto out_quiesce_queue;
 
 	return 0;
 
+out_quiesce_queue:
+	blk_mq_quiesce_queue(ctrl->ctrl.admin_q);
+	blk_sync_queue(ctrl->ctrl.admin_q);
 out_stop_queue:
 	nvme_rdma_stop_queue(&ctrl->queues[0]);
+	nvme_cancel_admin_tagset(&ctrl->ctrl);
 out_cleanup_queue:
 	if (new)
 		blk_cleanup_queue(ctrl->ctrl.admin_q);
@@ -1001,8 +1005,10 @@ static int nvme_rdma_configure_io_queues(struct nvme_rdma_ctrl *ctrl, bool new)
 
 out_wait_freeze_timed_out:
 	nvme_stop_queues(&ctrl->ctrl);
+	nvme_sync_io_queues(&ctrl->ctrl);
 	nvme_rdma_stop_io_queues(ctrl);
 out_cleanup_connect_q:
+	nvme_cancel_tagset(&ctrl->ctrl);
 	if (new)
 		blk_cleanup_queue(ctrl->ctrl.connect_q);
 out_free_tag_set:
@@ -1144,10 +1150,18 @@ static int nvme_rdma_setup_ctrl(struct nvme_rdma_ctrl *ctrl, bool new)
 	return 0;
 
 destroy_io:
-	if (ctrl->ctrl.queue_count > 1)
+	if (ctrl->ctrl.queue_count > 1) {
+		nvme_stop_queues(&ctrl->ctrl);
+		nvme_sync_io_queues(&ctrl->ctrl);
+		nvme_rdma_stop_io_queues(ctrl);
+		nvme_cancel_tagset(&ctrl->ctrl);
 		nvme_rdma_destroy_io_queues(ctrl, new);
+	}
 destroy_admin:
+	blk_mq_quiesce_queue(ctrl->ctrl.admin_q);
+	blk_sync_queue(ctrl->ctrl.admin_q);
 	nvme_rdma_stop_queue(&ctrl->queues[0]);
+	nvme_cancel_admin_tagset(&ctrl->ctrl);
 	nvme_rdma_destroy_admin_queue(ctrl, new);
 	return ret;
 }
-- 
2.30.1

[PATCH 5.10 070/102] nvme-tcp: add clean action for failed reconnection

[Greg Kroah-Hartman]

From: Chao Leng <lengchao@huawei.com>

[ Upstream commit 70a99574a79f1cd4dc7ad56ea37be40844bfb97b ]

If reconnect failed after start io queues, the queues will be unquiesced
and new requests continue to be delivered. Reconnection error handling
process directly free queues without cancel suspend requests. The
suppend request will time out, and then crash due to use the queue
after free.

Add sync queues and cancel suppend requests for reconnection error
handling.

Signed-off-by: Chao Leng <lengchao@huawei.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/nvme/host/tcp.c | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c
index 6487b7897d1f..739ac7deccd9 100644
--- a/drivers/nvme/host/tcp.c
+++ b/drivers/nvme/host/tcp.c
@@ -1815,8 +1815,10 @@ static int nvme_tcp_configure_io_queues(struct nvme_ctrl *ctrl, bool new)
 
 out_wait_freeze_timed_out:
 	nvme_stop_queues(ctrl);
+	nvme_sync_io_queues(ctrl);
 	nvme_tcp_stop_io_queues(ctrl);
 out_cleanup_connect_q:
+	nvme_cancel_tagset(ctrl);
 	if (new)
 		blk_cleanup_queue(ctrl->connect_q);
 out_free_tag_set:
@@ -1878,12 +1880,16 @@ static int nvme_tcp_configure_admin_queue(struct nvme_ctrl *ctrl, bool new)
 
 	error = nvme_init_identify(ctrl);
 	if (error)
-		goto out_stop_queue;
+		goto out_quiesce_queue;
 
 	return 0;
 
+out_quiesce_queue:
+	blk_mq_quiesce_queue(ctrl->admin_q);
+	blk_sync_queue(ctrl->admin_q);
 out_stop_queue:
 	nvme_tcp_stop_queue(ctrl, 0);
+	nvme_cancel_admin_tagset(ctrl);
 out_cleanup_queue:
 	if (new)
 		blk_cleanup_queue(ctrl->admin_q);
@@ -2003,10 +2009,18 @@ static int nvme_tcp_setup_ctrl(struct nvme_ctrl *ctrl, bool new)
 	return 0;
 
 destroy_io:
-	if (ctrl->queue_count > 1)
+	if (ctrl->queue_count > 1) {
+		nvme_stop_queues(ctrl);
+		nvme_sync_io_queues(ctrl);
+		nvme_tcp_stop_io_queues(ctrl);
+		nvme_cancel_tagset(ctrl);
 		nvme_tcp_destroy_io_queues(ctrl, new);
+	}
 destroy_admin:
+	blk_mq_quiesce_queue(ctrl->admin_q);
+	blk_sync_queue(ctrl->admin_q);
 	nvme_tcp_stop_queue(ctrl, 0);
+	nvme_cancel_admin_tagset(ctrl);
 	nvme_tcp_destroy_admin_queue(ctrl, new);
 	return ret;
 }
-- 
2.30.1

[PATCH 5.10 071/102] ASoC: Intel: Add DMI quirk table to soc_intel_is_byt_cr()

[Greg Kroah-Hartman]

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

[ Upstream commit 8ade6d8b02b1ead741bd4f6c42921035caab6560 ]

Some Bay Trail systems:
1. Use a non CR version of the Bay Trail SoC
2. Contain at least 6 interrupt resources so that the
   platform_get_resource(pdev, IORESOURCE_IRQ, 5) check to workaround
   non CR systems which list their IPC IRQ at index 0 despite being
   non CR does not work
3. Despite 1. and 2. still have their IPC IRQ at index 0 rather then 5

Add a DMI quirk table to check for the few known models with this issue,
so that the right IPC IRQ index is used on these systems.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20210120214957.140232-5-hdegoede@redhat.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/intel/common/soc-intel-quirks.h | 25 +++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/sound/soc/intel/common/soc-intel-quirks.h b/sound/soc/intel/common/soc-intel-quirks.h
index b07df3059926..a93987ab7f4d 100644
--- a/sound/soc/intel/common/soc-intel-quirks.h
+++ b/sound/soc/intel/common/soc-intel-quirks.h
@@ -11,6 +11,7 @@
 
 #if IS_ENABLED(CONFIG_X86)
 
+#include <linux/dmi.h>
 #include <asm/cpu_device_id.h>
 #include <asm/intel-family.h>
 #include <asm/iosf_mbi.h>
@@ -38,12 +39,36 @@ SOC_INTEL_IS_CPU(cml, KABYLAKE_L);
 
 static inline bool soc_intel_is_byt_cr(struct platform_device *pdev)
 {
+	/*
+	 * List of systems which:
+	 * 1. Use a non CR version of the Bay Trail SoC
+	 * 2. Contain at least 6 interrupt resources so that the
+	 *    platform_get_resource(pdev, IORESOURCE_IRQ, 5) check below
+	 *    succeeds
+	 * 3. Despite 1. and 2. still have their IPC IRQ at index 0 rather then 5
+	 *
+	 * This needs to be here so that it can be shared between the SST and
+	 * SOF drivers. We rely on the compiler to optimize this out in files
+	 * where soc_intel_is_byt_cr is not used.
+	 */
+	static const struct dmi_system_id force_bytcr_table[] = {
+		{	/* Lenovo Yoga Tablet 2 series */
+			.matches = {
+				DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+				DMI_MATCH(DMI_PRODUCT_FAMILY, "YOGATablet2"),
+			},
+		},
+		{}
+	};
 	struct device *dev = &pdev->dev;
 	int status = 0;
 
 	if (!soc_intel_is_byt())
 		return false;
 
+	if (dmi_check_system(force_bytcr_table))
+		return true;
+
 	if (iosf_mbi_available()) {
 		u32 bios_status;
 
-- 
2.30.1

[PATCH 5.10 072/102] btrfs: fix error handling in commit_fs_roots

[Greg Kroah-Hartman]

From: Josef Bacik <josef@toxicpanda.com>

[ Upstream commit 4f4317c13a40194940acf4a71670179c4faca2b5 ]

While doing error injection I would sometimes get a corrupt file system.
This is because I was injecting errors at btrfs_search_slot, but would
only do it one time per stack.  This uncovered a problem in
commit_fs_roots, where if we get an error we would just break.  However
we're in a nested loop, the first loop being a loop to find all the
dirty fs roots, and then subsequent root updates would succeed clearing
the error value.

This isn't likely to happen in real scenarios, however we could
potentially get a random ENOMEM once and then not again, and we'd end up
with a corrupted file system.  Fix this by moving the error checking
around a bit to the main loop, as this is the only place where something
will fail, and return the error as soon as it occurs.

With this patch my reproducer no longer corrupts the file system.

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/transaction.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 96dbfc011f45..261a50708cb8 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -1320,7 +1320,6 @@ static noinline int commit_fs_roots(struct btrfs_trans_handle *trans)
 	struct btrfs_root *gang[8];
 	int i;
 	int ret;
-	int err = 0;
 
 	spin_lock(&fs_info->fs_roots_radix_lock);
 	while (1) {
@@ -1332,6 +1331,8 @@ static noinline int commit_fs_roots(struct btrfs_trans_handle *trans)
 			break;
 		for (i = 0; i < ret; i++) {
 			struct btrfs_root *root = gang[i];
+			int ret2;
+
 			radix_tree_tag_clear(&fs_info->fs_roots_radix,
 					(unsigned long)root->root_key.objectid,
 					BTRFS_ROOT_TRANS_TAG);
@@ -1353,17 +1354,17 @@ static noinline int commit_fs_roots(struct btrfs_trans_handle *trans)
 						    root->node);
 			}
 
-			err = btrfs_update_root(trans, fs_info->tree_root,
+			ret2 = btrfs_update_root(trans, fs_info->tree_root,
 						&root->root_key,
 						&root->root_item);
+			if (ret2)
+				return ret2;
 			spin_lock(&fs_info->fs_roots_radix_lock);
-			if (err)
-				break;
 			btrfs_qgroup_free_meta_all_pertrans(root);
 		}
 	}
 	spin_unlock(&fs_info->fs_roots_radix_lock);
-	return err;
+	return 0;
 }
 
 /*
-- 
2.30.1

[PATCH 5.10 073/102] drm/amdgpu: enable only one high prio compute queue

[Greg Kroah-Hartman]

From: Nirmoy Das <nirmoy.das@amd.com>

[ Upstream commit 8c0225d79273968a65e73a4204fba023ae02714d ]

For high priority compute to work properly we need to enable
wave limiting on gfx pipe. Wave limiting is done through writing
into mmSPI_WCL_PIPE_PERCENT_GFX register. Enable only one high
priority compute queue to avoid race condition between multiple
high priority compute queues writing that register simultaneously.

Signed-off-by: Nirmoy Das <nirmoy.das@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@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_gfx.c | 15 ++++++++-------
 drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h |  2 +-
 drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c  |  6 ++----
 drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c   |  6 ++----
 drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c   |  7 ++-----
 5 files changed, 15 insertions(+), 21 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
index c485ec86804e..034a0f3b4c66 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
@@ -193,15 +193,16 @@ static bool amdgpu_gfx_is_multipipe_capable(struct amdgpu_device *adev)
 }
 
 bool amdgpu_gfx_is_high_priority_compute_queue(struct amdgpu_device *adev,
-					       int pipe, int queue)
+					       struct amdgpu_ring *ring)
 {
-	bool multipipe_policy = amdgpu_gfx_is_multipipe_capable(adev);
-	int cond;
-	/* Policy: alternate between normal and high priority */
-	cond = multipipe_policy ? pipe : queue;
-
-	return ((cond % 2) != 0);
+	/* Policy: use 1st queue as high priority compute queue if we
+	 * have more than one compute queue.
+	 */
+	if (adev->gfx.num_compute_rings > 1 &&
+	    ring == &adev->gfx.compute_ring[0])
+		return true;
 
+	return false;
 }
 
 void amdgpu_gfx_compute_queue_acquire(struct amdgpu_device *adev)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
index f353a5b71804..6e0cba6f4bdc 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
@@ -373,7 +373,7 @@ void amdgpu_queue_mask_bit_to_mec_queue(struct amdgpu_device *adev, int bit,
 bool amdgpu_gfx_is_mec_queue_enabled(struct amdgpu_device *adev, int mec,
 				     int pipe, int queue);
 bool amdgpu_gfx_is_high_priority_compute_queue(struct amdgpu_device *adev,
-					       int pipe, int queue);
+					       struct amdgpu_ring *ring);
 int amdgpu_gfx_me_queue_to_bit(struct amdgpu_device *adev, int me,
 			       int pipe, int queue);
 void amdgpu_gfx_bit_to_me_queue(struct amdgpu_device *adev, int bit,
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
index 4ebb43e09099..4cc83b399b66 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -4334,8 +4334,7 @@ static int gfx_v10_0_compute_ring_init(struct amdgpu_device *adev, int ring_id,
 	irq_type = AMDGPU_CP_IRQ_COMPUTE_MEC1_PIPE0_EOP
 		+ ((ring->me - 1) * adev->gfx.mec.num_pipe_per_mec)
 		+ ring->pipe;
-	hw_prio = amdgpu_gfx_is_high_priority_compute_queue(adev, ring->pipe,
-							    ring->queue) ?
+	hw_prio = amdgpu_gfx_is_high_priority_compute_queue(adev, ring) ?
 			AMDGPU_GFX_PIPE_PRIO_HIGH : AMDGPU_GFX_PIPE_PRIO_NORMAL;
 	/* type-2 packets are deprecated on MEC, use type-3 instead */
 	r = amdgpu_ring_init(adev, ring, 1024,
@@ -6361,8 +6360,7 @@ static void gfx_v10_0_compute_mqd_set_priority(struct amdgpu_ring *ring, struct
 	struct amdgpu_device *adev = ring->adev;
 
 	if (ring->funcs->type == AMDGPU_RING_TYPE_COMPUTE) {
-		if (amdgpu_gfx_is_high_priority_compute_queue(adev, ring->pipe,
-							      ring->queue)) {
+		if (amdgpu_gfx_is_high_priority_compute_queue(adev, ring)) {
 			mqd->cp_hqd_pipe_priority = AMDGPU_GFX_PIPE_PRIO_HIGH;
 			mqd->cp_hqd_queue_priority =
 				AMDGPU_GFX_QUEUE_PRIORITY_MAXIMUM;
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index c36258d56b44..f2f603fa0288 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -1915,8 +1915,7 @@ static int gfx_v8_0_compute_ring_init(struct amdgpu_device *adev, int ring_id,
 		+ ((ring->me - 1) * adev->gfx.mec.num_pipe_per_mec)
 		+ ring->pipe;
 
-	hw_prio = amdgpu_gfx_is_high_priority_compute_queue(adev, ring->pipe,
-							    ring->queue) ?
+	hw_prio = amdgpu_gfx_is_high_priority_compute_queue(adev, ring) ?
 			AMDGPU_GFX_PIPE_PRIO_HIGH : AMDGPU_RING_PRIO_DEFAULT;
 	/* type-2 packets are deprecated on MEC, use type-3 instead */
 	r = amdgpu_ring_init(adev, ring, 1024,
@@ -4434,8 +4433,7 @@ static void gfx_v8_0_mqd_set_priority(struct amdgpu_ring *ring, struct vi_mqd *m
 	struct amdgpu_device *adev = ring->adev;
 
 	if (ring->funcs->type == AMDGPU_RING_TYPE_COMPUTE) {
-		if (amdgpu_gfx_is_high_priority_compute_queue(adev, ring->pipe,
-							      ring->queue)) {
+		if (amdgpu_gfx_is_high_priority_compute_queue(adev, ring)) {
 			mqd->cp_hqd_pipe_priority = AMDGPU_GFX_PIPE_PRIO_HIGH;
 			mqd->cp_hqd_queue_priority =
 				AMDGPU_GFX_QUEUE_PRIORITY_MAXIMUM;
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 957c12b72767..fa843bda70ba 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -2228,8 +2228,7 @@ static int gfx_v9_0_compute_ring_init(struct amdgpu_device *adev, int ring_id,
 	irq_type = AMDGPU_CP_IRQ_COMPUTE_MEC1_PIPE0_EOP
 		+ ((ring->me - 1) * adev->gfx.mec.num_pipe_per_mec)
 		+ ring->pipe;
-	hw_prio = amdgpu_gfx_is_high_priority_compute_queue(adev, ring->pipe,
-							    ring->queue) ?
+	hw_prio = amdgpu_gfx_is_high_priority_compute_queue(adev, ring) ?
 			AMDGPU_GFX_PIPE_PRIO_HIGH : AMDGPU_GFX_PIPE_PRIO_NORMAL;
 	/* type-2 packets are deprecated on MEC, use type-3 instead */
 	return amdgpu_ring_init(adev, ring, 1024,
@@ -3384,9 +3383,7 @@ static void gfx_v9_0_mqd_set_priority(struct amdgpu_ring *ring, struct v9_mqd *m
 	struct amdgpu_device *adev = ring->adev;
 
 	if (ring->funcs->type == AMDGPU_RING_TYPE_COMPUTE) {
-		if (amdgpu_gfx_is_high_priority_compute_queue(adev,
-							      ring->pipe,
-							      ring->queue)) {
+		if (amdgpu_gfx_is_high_priority_compute_queue(adev, ring)) {
 			mqd->cp_hqd_pipe_priority = AMDGPU_GFX_PIPE_PRIO_HIGH;
 			mqd->cp_hqd_queue_priority =
 				AMDGPU_GFX_QUEUE_PRIORITY_MAXIMUM;
-- 
2.30.1

[PATCH 5.10 074/102] perf/x86/kvm: Add Cascade Lake Xeon steppings to isolation_ucodes[]

[Greg Kroah-Hartman]

From: Jim Mattson <jmattson@google.com>

[ Upstream commit b3c3361fe325074d4144c29d46daae4fc5a268d5 ]

Cascade Lake Xeon parts have the same model number as Skylake Xeon
parts, so they are tagged with the intel_pebs_isolation
quirk. However, as with Skylake Xeon H0 stepping parts, the PEBS
isolation issue is fixed in all microcode versions.

Add the Cascade Lake Xeon steppings (5, 6, and 7) to the
isolation_ucodes[] table so that these parts benefit from Andi's
optimization in commit 9b545c04abd4f ("perf/x86/kvm: Avoid unnecessary
work in guest filtering").

Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Link: https://lkml.kernel.org/r/20210205191324.2889006-1-jmattson@google.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/x86/events/intel/core.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index 7d4d89fa8647..aaa7bffdb20f 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -4384,6 +4384,9 @@ static const struct x86_cpu_desc isolation_ucodes[] = {
 	INTEL_CPU_DESC(INTEL_FAM6_BROADWELL_X,		 2, 0x0b000014),
 	INTEL_CPU_DESC(INTEL_FAM6_SKYLAKE_X,		 3, 0x00000021),
 	INTEL_CPU_DESC(INTEL_FAM6_SKYLAKE_X,		 4, 0x00000000),
+	INTEL_CPU_DESC(INTEL_FAM6_SKYLAKE_X,		 5, 0x00000000),
+	INTEL_CPU_DESC(INTEL_FAM6_SKYLAKE_X,		 6, 0x00000000),
+	INTEL_CPU_DESC(INTEL_FAM6_SKYLAKE_X,		 7, 0x00000000),
 	INTEL_CPU_DESC(INTEL_FAM6_SKYLAKE_L,		 3, 0x0000007c),
 	INTEL_CPU_DESC(INTEL_FAM6_SKYLAKE,		 3, 0x0000007c),
 	INTEL_CPU_DESC(INTEL_FAM6_KABYLAKE,		 9, 0x0000004e),
-- 
2.30.1

[PATCH 5.10 075/102] ASoC: Intel: sof-sdw: indent and add quirks consistently

[Greg Kroah-Hartman]

From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>

[ Upstream commit 8caf37e2be761688c396c609880936a807af490f ]

Use the same style for all quirks to avoid misses and errors

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20210208233336.59449-3-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/intel/boards/sof_sdw.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/sound/soc/intel/boards/sof_sdw.c b/sound/soc/intel/boards/sof_sdw.c
index 07e72ca1dfbc..d441ef324c06 100644
--- a/sound/soc/intel/boards/sof_sdw.c
+++ b/sound/soc/intel/boards/sof_sdw.c
@@ -115,9 +115,10 @@ static const struct dmi_system_id sof_sdw_quirk_table[] = {
 			DMI_MATCH(DMI_PRODUCT_NAME,
 				  "Tiger Lake Client Platform"),
 		},
-		.driver_data = (void *)(SOF_RT711_JD_SRC_JD1 |
-				SOF_SDW_TGL_HDMI | SOF_SDW_PCH_DMIC |
-				SOF_SSP_PORT(SOF_I2S_SSP2)),
+		.driver_data = (void *)(SOF_SDW_TGL_HDMI |
+					SOF_RT711_JD_SRC_JD1 |
+					SOF_SDW_PCH_DMIC |
+					SOF_SSP_PORT(SOF_I2S_SSP2)),
 	},
 	{
 		.callback = sof_sdw_quirk_cb,
@@ -141,7 +142,8 @@ static const struct dmi_system_id sof_sdw_quirk_table[] = {
 			DMI_MATCH(DMI_SYS_VENDOR, "Google"),
 			DMI_MATCH(DMI_PRODUCT_NAME, "Volteer"),
 		},
-		.driver_data = (void *)(SOF_SDW_TGL_HDMI | SOF_SDW_PCH_DMIC |
+		.driver_data = (void *)(SOF_SDW_TGL_HDMI |
+					SOF_SDW_PCH_DMIC |
 					SOF_SDW_FOUR_SPK),
 	},
 	{
@@ -150,7 +152,8 @@ static const struct dmi_system_id sof_sdw_quirk_table[] = {
 			DMI_MATCH(DMI_SYS_VENDOR, "Google"),
 			DMI_MATCH(DMI_PRODUCT_NAME, "Ripto"),
 		},
-		.driver_data = (void *)(SOF_SDW_TGL_HDMI | SOF_SDW_PCH_DMIC |
+		.driver_data = (void *)(SOF_SDW_TGL_HDMI |
+					SOF_SDW_PCH_DMIC |
 					SOF_SDW_FOUR_SPK),
 	},
 
-- 
2.30.1

[PATCH 5.10 076/102] ASoC: Intel: sof_sdw: detect DMIC number based on mach params

[Greg Kroah-Hartman]

From: Rander Wang <rander.wang@intel.com>

[ Upstream commit f88dcb9b98d3f86ead04d2453475267910448bb8 ]

Current driver create DMIC dai based on quirk for each platforms,
so we need to add quirk for new platforms. Now driver reports DMIC
number to machine driver and machine driver can create DMIC dai based
on this information. The old check is reserved for some platforms
may be failed to set the DMIC number in BIOS.

Reviewed-by: Bard Liao <bard.liao@intel.com>
Signed-off-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210208233336.59449-6-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/intel/boards/sof_sdw.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/intel/boards/sof_sdw.c b/sound/soc/intel/boards/sof_sdw.c
index d441ef324c06..0f1d845a0cca 100644
--- a/sound/soc/intel/boards/sof_sdw.c
+++ b/sound/soc/intel/boards/sof_sdw.c
@@ -925,7 +925,7 @@ static int sof_card_dai_links_create(struct device *dev,
 		ctx->idisp_codec = true;
 
 	/* enable dmic01 & dmic16k */
-	dmic_num = (sof_sdw_quirk & SOF_SDW_PCH_DMIC) ? 2 : 0;
+	dmic_num = (sof_sdw_quirk & SOF_SDW_PCH_DMIC || mach_params->dmic_num) ? 2 : 0;
 	comp_num += dmic_num;
 
 	dev_dbg(dev, "sdw %d, ssp %d, dmic %d, hdmi %d", sdw_be_num, ssp_num,
-- 
2.30.1

[PATCH 5.10 077/102] parisc: Bump 64-bit IRQ stack size to 64 KB

[Greg Kroah-Hartman]

From: John David Anglin <dave.anglin@bell.net>

[ Upstream commit 31680c1d1595a59e17c14ec036b192a95f8e5f4a ]

Bump 64-bit IRQ stack size to 64 KB.

I had a kernel IRQ stack overflow on the mx3210 debian buildd machine.  This patch increases the
64-bit IRQ stack size to 64 KB.  The 64-bit stack size needs to be larger than the 32-bit stack
size since registers are twice as big.

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/parisc/kernel/irq.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c
index e76c86619949..60f5829d476f 100644
--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -376,7 +376,11 @@ static inline int eirr_to_irq(unsigned long eirr)
 /*
  * IRQ STACK - used for irq handler
  */
+#ifdef CONFIG_64BIT
+#define IRQ_STACK_SIZE      (4096 << 4) /* 64k irq stack size */
+#else
 #define IRQ_STACK_SIZE      (4096 << 3) /* 32k irq stack size */
+#endif
 
 union irq_stack_union {
 	unsigned long stack[IRQ_STACK_SIZE/sizeof(unsigned long)];
-- 
2.30.1

[PATCH 5.10 078/102] sched/features: Fix hrtick reprogramming

[Greg Kroah-Hartman]

From: Juri Lelli <juri.lelli@redhat.com>

[ Upstream commit 156ec6f42b8d300dbbf382738ff35c8bad8f4c3a ]

Hung tasks and RCU stall cases were reported on systems which were not
100% busy. Investigation of such unexpected cases (no sign of potential
starvation caused by tasks hogging the system) pointed out that the
periodic sched tick timer wasn't serviced anymore after a certain point
and that caused all machinery that depends on it (timers, RCU, etc.) to
stop working as well. This issues was however only reproducible if
HRTICK was enabled.

Looking at core dumps it was found that the rbtree of the hrtimer base
used also for the hrtick was corrupted (i.e. next as seen from the base
root and actual leftmost obtained by traversing the tree are different).
Same base is also used for periodic tick hrtimer, which might get "lost"
if the rbtree gets corrupted.

Much alike what described in commit 1f71addd34f4c ("tick/sched: Do not
mess with an enqueued hrtimer") there is a race window between
hrtimer_set_expires() in hrtick_start and hrtimer_start_expires() in
__hrtick_restart() in which the former might be operating on an already
queued hrtick hrtimer, which might lead to corruption of the base.

Use hrtick_start() (which removes the timer before enqueuing it back) to
ensure hrtick hrtimer reprogramming is entirely guarded by the base
lock, so that no race conditions can occur.

Signed-off-by: Juri Lelli <juri.lelli@redhat.com>
Signed-off-by: Luis Claudio R. Goncalves <lgoncalv@redhat.com>
Signed-off-by: Daniel Bristot de Oliveira <bristot@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lkml.kernel.org/r/20210208073554.14629-2-juri.lelli@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 kernel/sched/core.c  | 8 +++-----
 kernel/sched/sched.h | 1 +
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 269165bf440a..3a150445e0cb 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -363,8 +363,9 @@ static enum hrtimer_restart hrtick(struct hrtimer *timer)
 static void __hrtick_restart(struct rq *rq)
 {
 	struct hrtimer *timer = &rq->hrtick_timer;
+	ktime_t time = rq->hrtick_time;
 
-	hrtimer_start_expires(timer, HRTIMER_MODE_ABS_PINNED_HARD);
+	hrtimer_start(timer, time, HRTIMER_MODE_ABS_PINNED_HARD);
 }
 
 /*
@@ -388,7 +389,6 @@ static void __hrtick_start(void *arg)
 void hrtick_start(struct rq *rq, u64 delay)
 {
 	struct hrtimer *timer = &rq->hrtick_timer;
-	ktime_t time;
 	s64 delta;
 
 	/*
@@ -396,9 +396,7 @@ void hrtick_start(struct rq *rq, u64 delay)
 	 * doesn't make sense and can cause timer DoS.
 	 */
 	delta = max_t(s64, delay, 10000LL);
-	time = ktime_add_ns(timer->base->get_time(), delta);
-
-	hrtimer_set_expires(timer, time);
+	rq->hrtick_time = ktime_add_ns(timer->base->get_time(), delta);
 
 	if (rq == this_rq())
 		__hrtick_restart(rq);
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index c122176c627e..fac1b121d113 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -1018,6 +1018,7 @@ struct rq {
 	call_single_data_t	hrtick_csd;
 #endif
 	struct hrtimer		hrtick_timer;
+	ktime_t 		hrtick_time;
 #endif
 
 #ifdef CONFIG_SCHEDSTATS
-- 
2.30.1

[PATCH 5.10 079/102] ASoC: Intel: bytcr_rt5640: Add quirk for the Estar Beauty HD MID 7316R tablet

[Greg Kroah-Hartman]

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

[ Upstream commit bdea43fc0436c9e98fdfe151c2ed8a3fc7277404 ]

The Estar Beauty HD MID 7316R tablet almost fully works with out default
settings. The only problem is that it has only 1 speaker so any sounds
only playing on the right channel get lost.

Add a quirk for this model using the default settings + MONO_SPEAKER.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210216213555.36555-2-hdegoede@redhat.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/intel/boards/bytcr_rt5640.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/sound/soc/intel/boards/bytcr_rt5640.c b/sound/soc/intel/boards/bytcr_rt5640.c
index db3633de9122..be874d2a109b 100644
--- a/sound/soc/intel/boards/bytcr_rt5640.c
+++ b/sound/soc/intel/boards/bytcr_rt5640.c
@@ -515,6 +515,16 @@ static const struct dmi_system_id byt_rt5640_quirk_table[] = {
 					BYT_RT5640_MONO_SPEAKER |
 					BYT_RT5640_MCLK_EN),
 	},
+	{	/* Estar Beauty HD MID 7316R */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Estar"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "eSTAR BEAUTY HD Intel Quad core"),
+		},
+		.driver_data = (void *)(BYTCR_INPUT_DEFAULTS |
+					BYT_RT5640_MONO_SPEAKER |
+					BYT_RT5640_SSP0_AIF1 |
+					BYT_RT5640_MCLK_EN),
+	},
 	{
 		.matches = {
 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
-- 
2.30.1

[PATCH 5.10 080/102] ASoC: Intel: bytcr_rt5640: Add quirk for the Voyo Winpad A15 tablet

[Greg Kroah-Hartman]

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

[ Upstream commit e1317cc9ca4ac20262895fddb065ffda4fc29cfb ]

The Voyo Winpad A15 tablet uses a Bay Trail (non CR) SoC, so it is using
SSP2 (AIF1) and it mostly works with the defaults. But instead of using
DMIC1 it is using an analog mic on IN1, add a quirk for this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210216213555.36555-3-hdegoede@redhat.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/intel/boards/bytcr_rt5640.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/sound/soc/intel/boards/bytcr_rt5640.c b/sound/soc/intel/boards/bytcr_rt5640.c
index be874d2a109b..626677fa1b5c 100644
--- a/sound/soc/intel/boards/bytcr_rt5640.c
+++ b/sound/soc/intel/boards/bytcr_rt5640.c
@@ -799,6 +799,20 @@ static const struct dmi_system_id byt_rt5640_quirk_table[] = {
 					BYT_RT5640_SSP0_AIF2 |
 					BYT_RT5640_MCLK_EN),
 	},
+	{	/* Voyo Winpad A15 */
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
+			DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
+			/* Above strings are too generic, also match on BIOS date */
+			DMI_MATCH(DMI_BIOS_DATE, "11/20/2014"),
+		},
+		.driver_data = (void *)(BYT_RT5640_IN1_MAP |
+					BYT_RT5640_JD_SRC_JD2_IN4N |
+					BYT_RT5640_OVCD_TH_2000UA |
+					BYT_RT5640_OVCD_SF_0P75 |
+					BYT_RT5640_DIFF_MIC |
+					BYT_RT5640_MCLK_EN),
+	},
 	{	/* Catch-all for generic Insyde tablets, must be last */
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
-- 
2.30.1

[PATCH 5.10 081/102] ASoC: Intel: bytcr_rt5651: Add quirk for the Jumper EZpad 7 tablet

[Greg Kroah-Hartman]

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

[ Upstream commit df8359c512fa770ffa6b0b0309807d9b9825a47f ]

Add a DMI quirk for the Jumper EZpad 7 tablet, this tablet has
a jack-detect switch which reads 1/high when a jack is inserted,
rather then using the standard active-low setup which most
jack-detect switches use. All other settings are using the defaults.

Add a DMI-quirk setting the defaults + the BYT_RT5651_JD_NOT_INV
flags for this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210216213555.36555-4-hdegoede@redhat.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/intel/boards/bytcr_rt5651.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/sound/soc/intel/boards/bytcr_rt5651.c b/sound/soc/intel/boards/bytcr_rt5651.c
index 688b5e0a49e3..bf8b87d45cb0 100644
--- a/sound/soc/intel/boards/bytcr_rt5651.c
+++ b/sound/soc/intel/boards/bytcr_rt5651.c
@@ -435,6 +435,19 @@ static const struct dmi_system_id byt_rt5651_quirk_table[] = {
 					BYT_RT5651_SSP0_AIF1 |
 					BYT_RT5651_MONO_SPEAKER),
 	},
+	{
+		/* Jumper EZpad 7 */
+		.callback = byt_rt5651_quirk_cb,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Jumper"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "EZpad"),
+			/* Jumper12x.WJ2012.bsBKRCP05 with the version dropped */
+			DMI_MATCH(DMI_BIOS_VERSION, "Jumper12x.WJ2012.bsBKRCP"),
+		},
+		.driver_data = (void *)(BYT_RT5651_DEFAULT_QUIRKS |
+					BYT_RT5651_IN2_MAP |
+					BYT_RT5651_JD_NOT_INV),
+	},
 	{
 		/* KIANO SlimNote 14.2 */
 		.callback = byt_rt5651_quirk_cb,
-- 
2.30.1

[PATCH 5.10 082/102] ASoC: Intel: bytcr_rt5640: Add quirk for the Acer One S1002 tablet

[Greg Kroah-Hartman]

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

[ Upstream commit c58947af08aedbdee0fce5ea6e6bf3e488ae0e2c ]

The Acer One S1002 tablet is using an analog mic on IN1 and has
its jack-detect connected to JD2_IN4N, instead of using the default
IN3 for its internal mic and JD1_IN4P for jack-detect.

Note it is also using AIF2 instead of AIF1 which is somewhat unusual,
this is correctly advertised in the ACPI CHAN package, so the speakers
do work without the quirk.

Add a quirk for the mic and jack-detect settings.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210216213555.36555-5-hdegoede@redhat.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/intel/boards/bytcr_rt5640.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/sound/soc/intel/boards/bytcr_rt5640.c b/sound/soc/intel/boards/bytcr_rt5640.c
index 626677fa1b5c..3af4cb87032c 100644
--- a/sound/soc/intel/boards/bytcr_rt5640.c
+++ b/sound/soc/intel/boards/bytcr_rt5640.c
@@ -402,6 +402,19 @@ static const struct dmi_system_id byt_rt5640_quirk_table[] = {
 					BYT_RT5640_SSP0_AIF1 |
 					BYT_RT5640_MCLK_EN),
 	},
+	{	/* Acer One 10 S1002 */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "One S1002"),
+		},
+		.driver_data = (void *)(BYT_RT5640_IN1_MAP |
+					BYT_RT5640_JD_SRC_JD2_IN4N |
+					BYT_RT5640_OVCD_TH_2000UA |
+					BYT_RT5640_OVCD_SF_0P75 |
+					BYT_RT5640_DIFF_MIC |
+					BYT_RT5640_SSP0_AIF2 |
+					BYT_RT5640_MCLK_EN),
+	},
 	{
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
-- 
2.30.1

[PATCH 5.10 083/102] scsi: iscsi: Restrict sessions and handles to admin capabilities

[Greg Kroah-Hartman]

From: Lee Duncan <lduncan@suse.com>

commit 688e8128b7a92df982709a4137ea4588d16f24aa upstream.

Protect the iSCSI transport handle, available in sysfs, by requiring
CAP_SYS_ADMIN to read it. Also protect the netlink socket by restricting
reception of messages to ones sent with CAP_SYS_ADMIN. This disables
normal users from being able to end arbitrary iSCSI sessions.

Cc: stable@vger.kernel.org
Reported-by: Adam Nichols <adam@grimm-co.com>
Reviewed-by: Chris Leech <cleech@redhat.com>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/scsi/scsi_transport_iscsi.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -132,6 +132,9 @@ show_transport_handle(struct device *dev
 		      char *buf)
 {
 	struct iscsi_internal *priv = dev_to_iscsi_internal(dev);
+
+	if (!capable(CAP_SYS_ADMIN))
+		return -EACCES;
 	return sprintf(buf, "%llu\n", (unsigned long long)iscsi_handle(priv->iscsi_transport));
 }
 static DEVICE_ATTR(handle, S_IRUGO, show_transport_handle, NULL);
@@ -3624,6 +3627,9 @@ iscsi_if_recv_msg(struct sk_buff *skb, s
 	struct iscsi_cls_conn *conn;
 	struct iscsi_endpoint *ep = NULL;
 
+	if (!netlink_capable(skb, CAP_SYS_ADMIN))
+		return -EPERM;
+
 	if (nlh->nlmsg_type == ISCSI_UEVENT_PATH_UPDATE)
 		*group = ISCSI_NL_GRP_UIP;
 	else

[PATCH 5.10 084/102] scsi: iscsi: Ensure sysfs attributes are limited to PAGE_SIZE

[Greg Kroah-Hartman]

From: Chris Leech <cleech@redhat.com>

commit ec98ea7070e94cc25a422ec97d1421e28d97b7ee upstream.

As the iSCSI parameters are exported back through sysfs, it should be
enforcing that they never are more than PAGE_SIZE (which should be more
than enough) before accepting updates through netlink.

Change all iSCSI sysfs attributes to use sysfs_emit().

Cc: stable@vger.kernel.org
Reported-by: Adam Nichols <adam@grimm-co.com>
Reviewed-by: Lee Duncan <lduncan@suse.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Chris Leech <cleech@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/scsi/libiscsi.c             |  148 ++++++++++++++++++------------------
 drivers/scsi/scsi_transport_iscsi.c |   25 +++---
 2 files changed, 90 insertions(+), 83 deletions(-)

--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -3338,125 +3338,125 @@ int iscsi_session_get_param(struct iscsi
 
 	switch(param) {
 	case ISCSI_PARAM_FAST_ABORT:
-		len = sprintf(buf, "%d\n", session->fast_abort);
+		len = sysfs_emit(buf, "%d\n", session->fast_abort);
 		break;
 	case ISCSI_PARAM_ABORT_TMO:
-		len = sprintf(buf, "%d\n", session->abort_timeout);
+		len = sysfs_emit(buf, "%d\n", session->abort_timeout);
 		break;
 	case ISCSI_PARAM_LU_RESET_TMO:
-		len = sprintf(buf, "%d\n", session->lu_reset_timeout);
+		len = sysfs_emit(buf, "%d\n", session->lu_reset_timeout);
 		break;
 	case ISCSI_PARAM_TGT_RESET_TMO:
-		len = sprintf(buf, "%d\n", session->tgt_reset_timeout);
+		len = sysfs_emit(buf, "%d\n", session->tgt_reset_timeout);
 		break;
 	case ISCSI_PARAM_INITIAL_R2T_EN:
-		len = sprintf(buf, "%d\n", session->initial_r2t_en);
+		len = sysfs_emit(buf, "%d\n", session->initial_r2t_en);
 		break;
 	case ISCSI_PARAM_MAX_R2T:
-		len = sprintf(buf, "%hu\n", session->max_r2t);
+		len = sysfs_emit(buf, "%hu\n", session->max_r2t);
 		break;
 	case ISCSI_PARAM_IMM_DATA_EN:
-		len = sprintf(buf, "%d\n", session->imm_data_en);
+		len = sysfs_emit(buf, "%d\n", session->imm_data_en);
 		break;
 	case ISCSI_PARAM_FIRST_BURST:
-		len = sprintf(buf, "%u\n", session->first_burst);
+		len = sysfs_emit(buf, "%u\n", session->first_burst);
 		break;
 	case ISCSI_PARAM_MAX_BURST:
-		len = sprintf(buf, "%u\n", session->max_burst);
+		len = sysfs_emit(buf, "%u\n", session->max_burst);
 		break;
 	case ISCSI_PARAM_PDU_INORDER_EN:
-		len = sprintf(buf, "%d\n", session->pdu_inorder_en);
+		len = sysfs_emit(buf, "%d\n", session->pdu_inorder_en);
 		break;
 	case ISCSI_PARAM_DATASEQ_INORDER_EN:
-		len = sprintf(buf, "%d\n", session->dataseq_inorder_en);
+		len = sysfs_emit(buf, "%d\n", session->dataseq_inorder_en);
 		break;
 	case ISCSI_PARAM_DEF_TASKMGMT_TMO:
-		len = sprintf(buf, "%d\n", session->def_taskmgmt_tmo);
+		len = sysfs_emit(buf, "%d\n", session->def_taskmgmt_tmo);
 		break;
 	case ISCSI_PARAM_ERL:
-		len = sprintf(buf, "%d\n", session->erl);
+		len = sysfs_emit(buf, "%d\n", session->erl);
 		break;
 	case ISCSI_PARAM_TARGET_NAME:
-		len = sprintf(buf, "%s\n", session->targetname);
+		len = sysfs_emit(buf, "%s\n", session->targetname);
 		break;
 	case ISCSI_PARAM_TARGET_ALIAS:
-		len = sprintf(buf, "%s\n", session->targetalias);
+		len = sysfs_emit(buf, "%s\n", session->targetalias);
 		break;
 	case ISCSI_PARAM_TPGT:
-		len = sprintf(buf, "%d\n", session->tpgt);
+		len = sysfs_emit(buf, "%d\n", session->tpgt);
 		break;
 	case ISCSI_PARAM_USERNAME:
-		len = sprintf(buf, "%s\n", session->username);
+		len = sysfs_emit(buf, "%s\n", session->username);
 		break;
 	case ISCSI_PARAM_USERNAME_IN:
-		len = sprintf(buf, "%s\n", session->username_in);
+		len = sysfs_emit(buf, "%s\n", session->username_in);
 		break;
 	case ISCSI_PARAM_PASSWORD:
-		len = sprintf(buf, "%s\n", session->password);
+		len = sysfs_emit(buf, "%s\n", session->password);
 		break;
 	case ISCSI_PARAM_PASSWORD_IN:
-		len = sprintf(buf, "%s\n", session->password_in);
+		len = sysfs_emit(buf, "%s\n", session->password_in);
 		break;
 	case ISCSI_PARAM_IFACE_NAME:
-		len = sprintf(buf, "%s\n", session->ifacename);
+		len = sysfs_emit(buf, "%s\n", session->ifacename);
 		break;
 	case ISCSI_PARAM_INITIATOR_NAME:
-		len = sprintf(buf, "%s\n", session->initiatorname);
+		len = sysfs_emit(buf, "%s\n", session->initiatorname);
 		break;
 	case ISCSI_PARAM_BOOT_ROOT:
-		len = sprintf(buf, "%s\n", session->boot_root);
+		len = sysfs_emit(buf, "%s\n", session->boot_root);
 		break;
 	case ISCSI_PARAM_BOOT_NIC:
-		len = sprintf(buf, "%s\n", session->boot_nic);
+		len = sysfs_emit(buf, "%s\n", session->boot_nic);
 		break;
 	case ISCSI_PARAM_BOOT_TARGET:
-		len = sprintf(buf, "%s\n", session->boot_target);
+		len = sysfs_emit(buf, "%s\n", session->boot_target);
 		break;
 	case ISCSI_PARAM_AUTO_SND_TGT_DISABLE:
-		len = sprintf(buf, "%u\n", session->auto_snd_tgt_disable);
+		len = sysfs_emit(buf, "%u\n", session->auto_snd_tgt_disable);
 		break;
 	case ISCSI_PARAM_DISCOVERY_SESS:
-		len = sprintf(buf, "%u\n", session->discovery_sess);
+		len = sysfs_emit(buf, "%u\n", session->discovery_sess);
 		break;
 	case ISCSI_PARAM_PORTAL_TYPE:
-		len = sprintf(buf, "%s\n", session->portal_type);
+		len = sysfs_emit(buf, "%s\n", session->portal_type);
 		break;
 	case ISCSI_PARAM_CHAP_AUTH_EN:
-		len = sprintf(buf, "%u\n", session->chap_auth_en);
+		len = sysfs_emit(buf, "%u\n", session->chap_auth_en);
 		break;
 	case ISCSI_PARAM_DISCOVERY_LOGOUT_EN:
-		len = sprintf(buf, "%u\n", session->discovery_logout_en);
+		len = sysfs_emit(buf, "%u\n", session->discovery_logout_en);
 		break;
 	case ISCSI_PARAM_BIDI_CHAP_EN:
-		len = sprintf(buf, "%u\n", session->bidi_chap_en);
+		len = sysfs_emit(buf, "%u\n", session->bidi_chap_en);
 		break;
 	case ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL:
-		len = sprintf(buf, "%u\n", session->discovery_auth_optional);
+		len = sysfs_emit(buf, "%u\n", session->discovery_auth_optional);
 		break;
 	case ISCSI_PARAM_DEF_TIME2WAIT:
-		len = sprintf(buf, "%d\n", session->time2wait);
+		len = sysfs_emit(buf, "%d\n", session->time2wait);
 		break;
 	case ISCSI_PARAM_DEF_TIME2RETAIN:
-		len = sprintf(buf, "%d\n", session->time2retain);
+		len = sysfs_emit(buf, "%d\n", session->time2retain);
 		break;
 	case ISCSI_PARAM_TSID:
-		len = sprintf(buf, "%u\n", session->tsid);
+		len = sysfs_emit(buf, "%u\n", session->tsid);
 		break;
 	case ISCSI_PARAM_ISID:
-		len = sprintf(buf, "%02x%02x%02x%02x%02x%02x\n",
+		len = sysfs_emit(buf, "%02x%02x%02x%02x%02x%02x\n",
 			      session->isid[0], session->isid[1],
 			      session->isid[2], session->isid[3],
 			      session->isid[4], session->isid[5]);
 		break;
 	case ISCSI_PARAM_DISCOVERY_PARENT_IDX:
-		len = sprintf(buf, "%u\n", session->discovery_parent_idx);
+		len = sysfs_emit(buf, "%u\n", session->discovery_parent_idx);
 		break;
 	case ISCSI_PARAM_DISCOVERY_PARENT_TYPE:
 		if (session->discovery_parent_type)
-			len = sprintf(buf, "%s\n",
+			len = sysfs_emit(buf, "%s\n",
 				      session->discovery_parent_type);
 		else
-			len = sprintf(buf, "\n");
+			len = sysfs_emit(buf, "\n");
 		break;
 	default:
 		return -ENOSYS;
@@ -3488,16 +3488,16 @@ int iscsi_conn_get_addr_param(struct soc
 	case ISCSI_PARAM_CONN_ADDRESS:
 	case ISCSI_HOST_PARAM_IPADDRESS:
 		if (sin)
-			len = sprintf(buf, "%pI4\n", &sin->sin_addr.s_addr);
+			len = sysfs_emit(buf, "%pI4\n", &sin->sin_addr.s_addr);
 		else
-			len = sprintf(buf, "%pI6\n", &sin6->sin6_addr);
+			len = sysfs_emit(buf, "%pI6\n", &sin6->sin6_addr);
 		break;
 	case ISCSI_PARAM_CONN_PORT:
 	case ISCSI_PARAM_LOCAL_PORT:
 		if (sin)
-			len = sprintf(buf, "%hu\n", be16_to_cpu(sin->sin_port));
+			len = sysfs_emit(buf, "%hu\n", be16_to_cpu(sin->sin_port));
 		else
-			len = sprintf(buf, "%hu\n",
+			len = sysfs_emit(buf, "%hu\n",
 				      be16_to_cpu(sin6->sin6_port));
 		break;
 	default:
@@ -3516,88 +3516,88 @@ int iscsi_conn_get_param(struct iscsi_cl
 
 	switch(param) {
 	case ISCSI_PARAM_PING_TMO:
-		len = sprintf(buf, "%u\n", conn->ping_timeout);
+		len = sysfs_emit(buf, "%u\n", conn->ping_timeout);
 		break;
 	case ISCSI_PARAM_RECV_TMO:
-		len = sprintf(buf, "%u\n", conn->recv_timeout);
+		len = sysfs_emit(buf, "%u\n", conn->recv_timeout);
 		break;
 	case ISCSI_PARAM_MAX_RECV_DLENGTH:
-		len = sprintf(buf, "%u\n", conn->max_recv_dlength);
+		len = sysfs_emit(buf, "%u\n", conn->max_recv_dlength);
 		break;
 	case ISCSI_PARAM_MAX_XMIT_DLENGTH:
-		len = sprintf(buf, "%u\n", conn->max_xmit_dlength);
+		len = sysfs_emit(buf, "%u\n", conn->max_xmit_dlength);
 		break;
 	case ISCSI_PARAM_HDRDGST_EN:
-		len = sprintf(buf, "%d\n", conn->hdrdgst_en);
+		len = sysfs_emit(buf, "%d\n", conn->hdrdgst_en);
 		break;
 	case ISCSI_PARAM_DATADGST_EN:
-		len = sprintf(buf, "%d\n", conn->datadgst_en);
+		len = sysfs_emit(buf, "%d\n", conn->datadgst_en);
 		break;
 	case ISCSI_PARAM_IFMARKER_EN:
-		len = sprintf(buf, "%d\n", conn->ifmarker_en);
+		len = sysfs_emit(buf, "%d\n", conn->ifmarker_en);
 		break;
 	case ISCSI_PARAM_OFMARKER_EN:
-		len = sprintf(buf, "%d\n", conn->ofmarker_en);
+		len = sysfs_emit(buf, "%d\n", conn->ofmarker_en);
 		break;
 	case ISCSI_PARAM_EXP_STATSN:
-		len = sprintf(buf, "%u\n", conn->exp_statsn);
+		len = sysfs_emit(buf, "%u\n", conn->exp_statsn);
 		break;
 	case ISCSI_PARAM_PERSISTENT_PORT:
-		len = sprintf(buf, "%d\n", conn->persistent_port);
+		len = sysfs_emit(buf, "%d\n", conn->persistent_port);
 		break;
 	case ISCSI_PARAM_PERSISTENT_ADDRESS:
-		len = sprintf(buf, "%s\n", conn->persistent_address);
+		len = sysfs_emit(buf, "%s\n", conn->persistent_address);
 		break;
 	case ISCSI_PARAM_STATSN:
-		len = sprintf(buf, "%u\n", conn->statsn);
+		len = sysfs_emit(buf, "%u\n", conn->statsn);
 		break;
 	case ISCSI_PARAM_MAX_SEGMENT_SIZE:
-		len = sprintf(buf, "%u\n", conn->max_segment_size);
+		len = sysfs_emit(buf, "%u\n", conn->max_segment_size);
 		break;
 	case ISCSI_PARAM_KEEPALIVE_TMO:
-		len = sprintf(buf, "%u\n", conn->keepalive_tmo);
+		len = sysfs_emit(buf, "%u\n", conn->keepalive_tmo);
 		break;
 	case ISCSI_PARAM_LOCAL_PORT:
-		len = sprintf(buf, "%u\n", conn->local_port);
+		len = sysfs_emit(buf, "%u\n", conn->local_port);
 		break;
 	case ISCSI_PARAM_TCP_TIMESTAMP_STAT:
-		len = sprintf(buf, "%u\n", conn->tcp_timestamp_stat);
+		len = sysfs_emit(buf, "%u\n", conn->tcp_timestamp_stat);
 		break;
 	case ISCSI_PARAM_TCP_NAGLE_DISABLE:
-		len = sprintf(buf, "%u\n", conn->tcp_nagle_disable);
+		len = sysfs_emit(buf, "%u\n", conn->tcp_nagle_disable);
 		break;
 	case ISCSI_PARAM_TCP_WSF_DISABLE:
-		len = sprintf(buf, "%u\n", conn->tcp_wsf_disable);
+		len = sysfs_emit(buf, "%u\n", conn->tcp_wsf_disable);
 		break;
 	case ISCSI_PARAM_TCP_TIMER_SCALE:
-		len = sprintf(buf, "%u\n", conn->tcp_timer_scale);
+		len = sysfs_emit(buf, "%u\n", conn->tcp_timer_scale);
 		break;
 	case ISCSI_PARAM_TCP_TIMESTAMP_EN:
-		len = sprintf(buf, "%u\n", conn->tcp_timestamp_en);
+		len = sysfs_emit(buf, "%u\n", conn->tcp_timestamp_en);
 		break;
 	case ISCSI_PARAM_IP_FRAGMENT_DISABLE:
-		len = sprintf(buf, "%u\n", conn->fragment_disable);
+		len = sysfs_emit(buf, "%u\n", conn->fragment_disable);
 		break;
 	case ISCSI_PARAM_IPV4_TOS:
-		len = sprintf(buf, "%u\n", conn->ipv4_tos);
+		len = sysfs_emit(buf, "%u\n", conn->ipv4_tos);
 		break;
 	case ISCSI_PARAM_IPV6_TC:
-		len = sprintf(buf, "%u\n", conn->ipv6_traffic_class);
+		len = sysfs_emit(buf, "%u\n", conn->ipv6_traffic_class);
 		break;
 	case ISCSI_PARAM_IPV6_FLOW_LABEL:
-		len = sprintf(buf, "%u\n", conn->ipv6_flow_label);
+		len = sysfs_emit(buf, "%u\n", conn->ipv6_flow_label);
 		break;
 	case ISCSI_PARAM_IS_FW_ASSIGNED_IPV6:
-		len = sprintf(buf, "%u\n", conn->is_fw_assigned_ipv6);
+		len = sysfs_emit(buf, "%u\n", conn->is_fw_assigned_ipv6);
 		break;
 	case ISCSI_PARAM_TCP_XMIT_WSF:
-		len = sprintf(buf, "%u\n", conn->tcp_xmit_wsf);
+		len = sysfs_emit(buf, "%u\n", conn->tcp_xmit_wsf);
 		break;
 	case ISCSI_PARAM_TCP_RECV_WSF:
-		len = sprintf(buf, "%u\n", conn->tcp_recv_wsf);
+		len = sysfs_emit(buf, "%u\n", conn->tcp_recv_wsf);
 		break;
 	case ISCSI_PARAM_LOCAL_IPADDR:
-		len = sprintf(buf, "%s\n", conn->local_ipaddr);
+		len = sysfs_emit(buf, "%s\n", conn->local_ipaddr);
 		break;
 	default:
 		return -ENOSYS;
@@ -3615,13 +3615,13 @@ int iscsi_host_get_param(struct Scsi_Hos
 
 	switch (param) {
 	case ISCSI_HOST_PARAM_NETDEV_NAME:
-		len = sprintf(buf, "%s\n", ihost->netdev);
+		len = sysfs_emit(buf, "%s\n", ihost->netdev);
 		break;
 	case ISCSI_HOST_PARAM_HWADDRESS:
-		len = sprintf(buf, "%s\n", ihost->hwaddress);
+		len = sysfs_emit(buf, "%s\n", ihost->hwaddress);
 		break;
 	case ISCSI_HOST_PARAM_INITIATOR_NAME:
-		len = sprintf(buf, "%s\n", ihost->initiatorname);
+		len = sysfs_emit(buf, "%s\n", ihost->initiatorname);
 		break;
 	default:
 		return -ENOSYS;
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -135,7 +135,8 @@ show_transport_handle(struct device *dev
 
 	if (!capable(CAP_SYS_ADMIN))
 		return -EACCES;
-	return sprintf(buf, "%llu\n", (unsigned long long)iscsi_handle(priv->iscsi_transport));
+	return sysfs_emit(buf, "%llu\n",
+		  (unsigned long long)iscsi_handle(priv->iscsi_transport));
 }
 static DEVICE_ATTR(handle, S_IRUGO, show_transport_handle, NULL);
 
@@ -145,7 +146,7 @@ show_transport_##name(struct device *dev
 		      struct device_attribute *attr,char *buf)		\
 {									\
 	struct iscsi_internal *priv = dev_to_iscsi_internal(dev);	\
-	return sprintf(buf, format"\n", priv->iscsi_transport->name);	\
+	return sysfs_emit(buf, format"\n", priv->iscsi_transport->name);\
 }									\
 static DEVICE_ATTR(name, S_IRUGO, show_transport_##name, NULL);
 
@@ -186,7 +187,7 @@ static ssize_t
 show_ep_handle(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct iscsi_endpoint *ep = iscsi_dev_to_endpoint(dev);
-	return sprintf(buf, "%llu\n", (unsigned long long) ep->id);
+	return sysfs_emit(buf, "%llu\n", (unsigned long long) ep->id);
 }
 static ISCSI_ATTR(ep, handle, S_IRUGO, show_ep_handle, NULL);
 
@@ -2886,6 +2887,9 @@ iscsi_set_param(struct iscsi_transport *
 	struct iscsi_cls_session *session;
 	int err = 0, value = 0;
 
+	if (ev->u.set_param.len > PAGE_SIZE)
+		return -EINVAL;
+
 	session = iscsi_session_lookup(ev->u.set_param.sid);
 	conn = iscsi_conn_lookup(ev->u.set_param.sid, ev->u.set_param.cid);
 	if (!conn || !session)
@@ -3033,6 +3037,9 @@ iscsi_set_host_param(struct iscsi_transp
 	if (!transport->set_host_param)
 		return -ENOSYS;
 
+	if (ev->u.set_host_param.len > PAGE_SIZE)
+		return -EINVAL;
+
 	shost = scsi_host_lookup(ev->u.set_host_param.host_no);
 	if (!shost) {
 		printk(KERN_ERR "set_host_param could not find host no %u\n",
@@ -3966,7 +3973,7 @@ static ssize_t show_conn_state(struct de
 	    conn->state < ARRAY_SIZE(connection_state_names))
 		state = connection_state_names[conn->state];
 
-	return sprintf(buf, "%s\n", state);
+	return sysfs_emit(buf, "%s\n", state);
 }
 static ISCSI_CLASS_ATTR(conn, state, S_IRUGO, show_conn_state,
 			NULL);
@@ -4194,7 +4201,7 @@ show_priv_session_state(struct device *d
 			char *buf)
 {
 	struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent);
-	return sprintf(buf, "%s\n", iscsi_session_state_name(session->state));
+	return sysfs_emit(buf, "%s\n", iscsi_session_state_name(session->state));
 }
 static ISCSI_CLASS_ATTR(priv_sess, state, S_IRUGO, show_priv_session_state,
 			NULL);
@@ -4203,7 +4210,7 @@ show_priv_session_creator(struct device
 			char *buf)
 {
 	struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent);
-	return sprintf(buf, "%d\n", session->creator);
+	return sysfs_emit(buf, "%d\n", session->creator);
 }
 static ISCSI_CLASS_ATTR(priv_sess, creator, S_IRUGO, show_priv_session_creator,
 			NULL);
@@ -4212,7 +4219,7 @@ show_priv_session_target_id(struct devic
 			    char *buf)
 {
 	struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent);
-	return sprintf(buf, "%d\n", session->target_id);
+	return sysfs_emit(buf, "%d\n", session->target_id);
 }
 static ISCSI_CLASS_ATTR(priv_sess, target_id, S_IRUGO,
 			show_priv_session_target_id, NULL);
@@ -4225,8 +4232,8 @@ show_priv_session_##field(struct device
 	struct iscsi_cls_session *session = 				\
 			iscsi_dev_to_session(dev->parent);		\
 	if (session->field == -1)					\
-		return sprintf(buf, "off\n");				\
-	return sprintf(buf, format"\n", session->field);		\
+		return sysfs_emit(buf, "off\n");			\
+	return sysfs_emit(buf, format"\n", session->field);		\
 }
 
 #define iscsi_priv_session_attr_store(field)				\

[PATCH 5.10 085/102] scsi: iscsi: Verify lengths on passthrough PDUs

[Greg Kroah-Hartman]

From: Chris Leech <cleech@redhat.com>

commit f9dbdf97a5bd92b1a49cee3d591b55b11fd7a6d5 upstream.

Open-iSCSI sends passthrough PDUs over netlink, but the kernel should be
verifying that the provided PDU header and data lengths fall within the
netlink message to prevent accessing beyond that in memory.

Cc: stable@vger.kernel.org
Reported-by: Adam Nichols <adam@grimm-co.com>
Reviewed-by: Lee Duncan <lduncan@suse.com>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Chris Leech <cleech@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/scsi/scsi_transport_iscsi.c |    9 +++++++++
 1 file changed, 9 insertions(+)

--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -3627,6 +3627,7 @@ iscsi_if_recv_msg(struct sk_buff *skb, s
 {
 	int err = 0;
 	u32 portid;
+	u32 pdu_len;
 	struct iscsi_uevent *ev = nlmsg_data(nlh);
 	struct iscsi_transport *transport = NULL;
 	struct iscsi_internal *priv;
@@ -3769,6 +3770,14 @@ iscsi_if_recv_msg(struct sk_buff *skb, s
 			err = -EINVAL;
 		break;
 	case ISCSI_UEVENT_SEND_PDU:
+		pdu_len = nlh->nlmsg_len - sizeof(*nlh) - sizeof(*ev);
+
+		if ((ev->u.send_pdu.hdr_size > pdu_len) ||
+		    (ev->u.send_pdu.data_size > (pdu_len - ev->u.send_pdu.hdr_size))) {
+			err = -EINVAL;
+			break;
+		}
+
 		conn = iscsi_conn_lookup(ev->u.send_pdu.sid, ev->u.send_pdu.cid);
 		if (conn) {
 			mutex_lock(&conn_mutex);

[PATCH 5.10 086/102] Xen/gnttab: handle p2m update errors on a per-slot basis

[Greg Kroah-Hartman]

From: Jan Beulich <jbeulich@suse.com>

commit 8310b77b48c5558c140e7a57a702e7819e62f04e upstream.

Bailing immediately from set_foreign_p2m_mapping() upon a p2m updating
error leaves the full batch in an ambiguous state as far as the caller
is concerned. Instead flags respective slots as bad, unmapping what
was mapped there right away.

HYPERVISOR_grant_table_op()'s return value and the individual unmap
slots' status fields get used only for a one-time - there's not much we
can do in case of a failure.

Note that there's no GNTST_enomem or alike, so GNTST_general_error gets
used.

The map ops' handle fields get overwritten just to be on the safe side.

This is part of XSA-367.

Cc: <stable@vger.kernel.org>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/96cccf5d-e756-5f53-b91a-ea269bfb9be0@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm/xen/p2m.c |   35 +++++++++++++++++++++++++++++++----
 arch/x86/xen/p2m.c |   44 +++++++++++++++++++++++++++++++++++++++++---
 2 files changed, 72 insertions(+), 7 deletions(-)

--- a/arch/arm/xen/p2m.c
+++ b/arch/arm/xen/p2m.c
@@ -93,12 +93,39 @@ int set_foreign_p2m_mapping(struct gntta
 	int i;
 
 	for (i = 0; i < count; i++) {
+		struct gnttab_unmap_grant_ref unmap;
+		int rc;
+
 		if (map_ops[i].status)
 			continue;
-		if (unlikely(!set_phys_to_machine(map_ops[i].host_addr >> XEN_PAGE_SHIFT,
-				    map_ops[i].dev_bus_addr >> XEN_PAGE_SHIFT))) {
-			return -ENOMEM;
-		}
+		if (likely(set_phys_to_machine(map_ops[i].host_addr >> XEN_PAGE_SHIFT,
+				    map_ops[i].dev_bus_addr >> XEN_PAGE_SHIFT)))
+			continue;
+
+		/*
+		 * Signal an error for this slot. This in turn requires
+		 * immediate unmapping.
+		 */
+		map_ops[i].status = GNTST_general_error;
+		unmap.host_addr = map_ops[i].host_addr,
+		unmap.handle = map_ops[i].handle;
+		map_ops[i].handle = ~0;
+		if (map_ops[i].flags & GNTMAP_device_map)
+			unmap.dev_bus_addr = map_ops[i].dev_bus_addr;
+		else
+			unmap.dev_bus_addr = 0;
+
+		/*
+		 * Pre-populate the status field, to be recognizable in
+		 * the log message below.
+		 */
+		unmap.status = 1;
+
+		rc = HYPERVISOR_grant_table_op(GNTTABOP_unmap_grant_ref,
+					       &unmap, 1);
+		if (rc || unmap.status != GNTST_okay)
+			pr_err_once("gnttab unmap failed: rc=%d st=%d\n",
+				    rc, unmap.status);
 	}
 
 	return 0;
--- a/arch/x86/xen/p2m.c
+++ b/arch/x86/xen/p2m.c
@@ -710,6 +710,8 @@ int set_foreign_p2m_mapping(struct gntta
 
 	for (i = 0; i < count; i++) {
 		unsigned long mfn, pfn;
+		struct gnttab_unmap_grant_ref unmap[2];
+		int rc;
 
 		/* Do not add to override if the map failed. */
 		if (map_ops[i].status != GNTST_okay ||
@@ -727,10 +729,46 @@ int set_foreign_p2m_mapping(struct gntta
 
 		WARN(pfn_to_mfn(pfn) != INVALID_P2M_ENTRY, "page must be ballooned");
 
-		if (unlikely(!set_phys_to_machine(pfn, FOREIGN_FRAME(mfn)))) {
-			ret = -ENOMEM;
-			goto out;
+		if (likely(set_phys_to_machine(pfn, FOREIGN_FRAME(mfn))))
+			continue;
+
+		/*
+		 * Signal an error for this slot. This in turn requires
+		 * immediate unmapping.
+		 */
+		map_ops[i].status = GNTST_general_error;
+		unmap[0].host_addr = map_ops[i].host_addr,
+		unmap[0].handle = map_ops[i].handle;
+		map_ops[i].handle = ~0;
+		if (map_ops[i].flags & GNTMAP_device_map)
+			unmap[0].dev_bus_addr = map_ops[i].dev_bus_addr;
+		else
+			unmap[0].dev_bus_addr = 0;
+
+		if (kmap_ops) {
+			kmap_ops[i].status = GNTST_general_error;
+			unmap[1].host_addr = kmap_ops[i].host_addr,
+			unmap[1].handle = kmap_ops[i].handle;
+			kmap_ops[i].handle = ~0;
+			if (kmap_ops[i].flags & GNTMAP_device_map)
+				unmap[1].dev_bus_addr = kmap_ops[i].dev_bus_addr;
+			else
+				unmap[1].dev_bus_addr = 0;
 		}
+
+		/*
+		 * Pre-populate both status fields, to be recognizable in
+		 * the log message below.
+		 */
+		unmap[0].status = 1;
+		unmap[1].status = 1;
+
+		rc = HYPERVISOR_grant_table_op(GNTTABOP_unmap_grant_ref,
+					       unmap, 1 + !!kmap_ops);
+		if (rc || unmap[0].status != GNTST_okay ||
+		    unmap[1].status != GNTST_okay)
+			pr_err_once("gnttab unmap failed: rc=%d st0=%d st1=%d\n",
+				    rc, unmap[0].status, unmap[1].status);
 	}
 
 out:

[PATCH 5.10 087/102] xen-netback: respect gnttab_map_refs()s return value

[Greg Kroah-Hartman]

From: Jan Beulich <jbeulich@suse.com>

commit 2991397d23ec597405b116d96de3813420bdcbc3 upstream.

Commit 3194a1746e8a ("xen-netback: don't "handle" error by BUG()")
dropped respective a BUG_ON() without noticing that with this the
variable's value wouldn't be consumed anymore. With gnttab_set_map_op()
setting all status fields to a non-zero value, in case of an error no
slot should have a status of GNTST_okay (zero).

This is part of XSA-367.

Cc: <stable@vger.kernel.org>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/d933f495-619a-0086-5fb4-1ec3cf81a8fc@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/xen-netback/netback.c |   12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -1342,11 +1342,21 @@ int xenvif_tx_action(struct xenvif_queue
 		return 0;
 
 	gnttab_batch_copy(queue->tx_copy_ops, nr_cops);
-	if (nr_mops != 0)
+	if (nr_mops != 0) {
 		ret = gnttab_map_refs(queue->tx_map_ops,
 				      NULL,
 				      queue->pages_to_map,
 				      nr_mops);
+		if (ret) {
+			unsigned int i;
+
+			netdev_err(queue->vif->dev, "Map fail: nr %u ret %d\n",
+				   nr_mops, ret);
+			for (i = 0; i < nr_mops; ++i)
+				WARN_ON_ONCE(queue->tx_map_ops[i].status ==
+				             GNTST_okay);
+		}
+	}
 
 	work_done = xenvif_tx_submit(queue);
 

[PATCH 5.10 088/102] xen: fix p2m size in dom0 for disabled memory hotplug case

[Greg Kroah-Hartman]

From: Juergen Gross <jgross@suse.com>

commit 882213990d32fd224340a4533f6318dd152be4b2 upstream.

Since commit 9e2369c06c8a18 ("xen: add helpers to allocate unpopulated
memory") foreign mappings are using guest physical addresses allocated
via ZONE_DEVICE functionality.

This will result in problems for the case of no balloon memory hotplug
being configured, as the p2m list will only cover the initial memory
size of the domain. Any ZONE_DEVICE allocated address will be outside
the p2m range and thus a mapping can't be established with that memory
address.

Fix that by extending the p2m size for that case. At the same time add
a check for a to be created mapping to be within the p2m limits in
order to detect errors early.

While changing a comment, remove some 32-bit leftovers.

This is XSA-369.

Fixes: 9e2369c06c8a18 ("xen: add helpers to allocate unpopulated memory")
Cc: <stable@vger.kernel.org> # 5.9
Reported-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/x86/include/asm/xen/page.h |   12 ++++++++++++
 arch/x86/xen/p2m.c              |   10 ++++++----
 arch/x86/xen/setup.c            |   25 +++----------------------
 3 files changed, 21 insertions(+), 26 deletions(-)

--- a/arch/x86/include/asm/xen/page.h
+++ b/arch/x86/include/asm/xen/page.h
@@ -87,6 +87,18 @@ clear_foreign_p2m_mapping(struct gnttab_
 #endif
 
 /*
+ * The maximum amount of extra memory compared to the base size.  The
+ * main scaling factor is the size of struct page.  At extreme ratios
+ * of base:extra, all the base memory can be filled with page
+ * structures for the extra memory, leaving no space for anything
+ * else.
+ *
+ * 10x seems like a reasonable balance between scaling flexibility and
+ * leaving a practically usable system.
+ */
+#define XEN_EXTRA_MEM_RATIO	(10)
+
+/*
  * Helper functions to write or read unsigned long values to/from
  * memory, when the access may fault.
  */
--- a/arch/x86/xen/p2m.c
+++ b/arch/x86/xen/p2m.c
@@ -416,6 +416,9 @@ void __init xen_vmalloc_p2m_tree(void)
 	xen_p2m_last_pfn = xen_max_p2m_pfn;
 
 	p2m_limit = (phys_addr_t)P2M_LIMIT * 1024 * 1024 * 1024 / PAGE_SIZE;
+	if (!p2m_limit && IS_ENABLED(CONFIG_XEN_UNPOPULATED_ALLOC))
+		p2m_limit = xen_start_info->nr_pages * XEN_EXTRA_MEM_RATIO;
+
 	vm.flags = VM_ALLOC;
 	vm.size = ALIGN(sizeof(unsigned long) * max(xen_max_p2m_pfn, p2m_limit),
 			PMD_SIZE * PMDS_PER_MID_PAGE);
@@ -652,10 +655,9 @@ bool __set_phys_to_machine(unsigned long
 	pte_t *ptep;
 	unsigned int level;
 
-	if (unlikely(pfn >= xen_p2m_size)) {
-		BUG_ON(mfn != INVALID_P2M_ENTRY);
-		return true;
-	}
+	/* Only invalid entries allowed above the highest p2m covered frame. */
+	if (unlikely(pfn >= xen_p2m_size))
+		return mfn == INVALID_P2M_ENTRY;
 
 	/*
 	 * The interface requires atomic updates on p2m elements.
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -59,18 +59,6 @@ static struct {
 } xen_remap_buf __initdata __aligned(PAGE_SIZE);
 static unsigned long xen_remap_mfn __initdata = INVALID_P2M_ENTRY;
 
-/* 
- * The maximum amount of extra memory compared to the base size.  The
- * main scaling factor is the size of struct page.  At extreme ratios
- * of base:extra, all the base memory can be filled with page
- * structures for the extra memory, leaving no space for anything
- * else.
- * 
- * 10x seems like a reasonable balance between scaling flexibility and
- * leaving a practically usable system.
- */
-#define EXTRA_MEM_RATIO		(10)
-
 static bool xen_512gb_limit __initdata = IS_ENABLED(CONFIG_XEN_512GB);
 
 static void __init xen_parse_512gb(void)
@@ -790,20 +778,13 @@ char * __init xen_memory_setup(void)
 		extra_pages += max_pages - max_pfn;
 
 	/*
-	 * Clamp the amount of extra memory to a EXTRA_MEM_RATIO
-	 * factor the base size.  On non-highmem systems, the base
-	 * size is the full initial memory allocation; on highmem it
-	 * is limited to the max size of lowmem, so that it doesn't
-	 * get completely filled.
+	 * Clamp the amount of extra memory to a XEN_EXTRA_MEM_RATIO
+	 * factor the base size.
 	 *
 	 * Make sure we have no memory above max_pages, as this area
 	 * isn't handled by the p2m management.
-	 *
-	 * In principle there could be a problem in lowmem systems if
-	 * the initial memory is also very large with respect to
-	 * lowmem, but we won't try to deal with that here.
 	 */
-	extra_pages = min3(EXTRA_MEM_RATIO * min(max_pfn, PFN_DOWN(MAXMEM)),
+	extra_pages = min3(XEN_EXTRA_MEM_RATIO * min(max_pfn, PFN_DOWN(MAXMEM)),
 			   extra_pages, max_pages - max_pfn);
 	i = 0;
 	addr = xen_e820_table.entries[0].addr;

[PATCH 5.10 089/102] zsmalloc: account the number of compacted pages correctly

[Greg Kroah-Hartman]

From: Rokudo Yan <wu-yan@tcl.com>

commit 2395928158059b8f9858365fce7713ce7fef62e4 upstream.

There exists multiple path may do zram compaction concurrently.
1. auto-compaction triggered during memory reclaim
2. userspace utils write zram<id>/compaction node

So, multiple threads may call zs_shrinker_scan/zs_compact concurrently.
But pages_compacted is a per zsmalloc pool variable and modification
of the variable is not serialized(through under class->lock).
There are two issues here:
1. the pages_compacted may not equal to total number of pages
freed(due to concurrently add).
2. zs_shrinker_scan may not return the correct number of pages
freed(issued by current shrinker).

The fix is simple:
1. account the number of pages freed in zs_compact locally.
2. use actomic variable pages_compacted to accumulate total number.

Link: https://lkml.kernel.org/r/20210202122235.26885-1-wu-yan@tcl.com
Fixes: 860c707dca155a56 ("zsmalloc: account the number of compacted pages")
Signed-off-by: Rokudo Yan <wu-yan@tcl.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.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>

---
 drivers/block/zram/zram_drv.c |    2 +-
 include/linux/zsmalloc.h      |    2 +-
 mm/zsmalloc.c                 |   17 +++++++++++------
 3 files changed, 13 insertions(+), 8 deletions(-)

--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -1078,7 +1078,7 @@ static ssize_t mm_stat_show(struct devic
 			zram->limit_pages << PAGE_SHIFT,
 			max_used << PAGE_SHIFT,
 			(u64)atomic64_read(&zram->stats.same_pages),
-			pool_stats.pages_compacted,
+			atomic_long_read(&pool_stats.pages_compacted),
 			(u64)atomic64_read(&zram->stats.huge_pages));
 	up_read(&zram->init_lock);
 
--- a/include/linux/zsmalloc.h
+++ b/include/linux/zsmalloc.h
@@ -35,7 +35,7 @@ enum zs_mapmode {
 
 struct zs_pool_stats {
 	/* How many pages were migrated (freed) */
-	unsigned long pages_compacted;
+	atomic_long_t pages_compacted;
 };
 
 struct zs_pool;
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -2216,11 +2216,13 @@ static unsigned long zs_can_compact(stru
 	return obj_wasted * class->pages_per_zspage;
 }
 
-static void __zs_compact(struct zs_pool *pool, struct size_class *class)
+static unsigned long __zs_compact(struct zs_pool *pool,
+				  struct size_class *class)
 {
 	struct zs_compact_control cc;
 	struct zspage *src_zspage;
 	struct zspage *dst_zspage = NULL;
+	unsigned long pages_freed = 0;
 
 	spin_lock(&class->lock);
 	while ((src_zspage = isolate_zspage(class, true))) {
@@ -2250,7 +2252,7 @@ static void __zs_compact(struct zs_pool
 		putback_zspage(class, dst_zspage);
 		if (putback_zspage(class, src_zspage) == ZS_EMPTY) {
 			free_zspage(pool, class, src_zspage);
-			pool->stats.pages_compacted += class->pages_per_zspage;
+			pages_freed += class->pages_per_zspage;
 		}
 		spin_unlock(&class->lock);
 		cond_resched();
@@ -2261,12 +2263,15 @@ static void __zs_compact(struct zs_pool
 		putback_zspage(class, src_zspage);
 
 	spin_unlock(&class->lock);
+
+	return pages_freed;
 }
 
 unsigned long zs_compact(struct zs_pool *pool)
 {
 	int i;
 	struct size_class *class;
+	unsigned long pages_freed = 0;
 
 	for (i = ZS_SIZE_CLASSES - 1; i >= 0; i--) {
 		class = pool->size_class[i];
@@ -2274,10 +2279,11 @@ unsigned long zs_compact(struct zs_pool
 			continue;
 		if (class->index != i)
 			continue;
-		__zs_compact(pool, class);
+		pages_freed += __zs_compact(pool, class);
 	}
+	atomic_long_add(pages_freed, &pool->stats.pages_compacted);
 
-	return pool->stats.pages_compacted;
+	return pages_freed;
 }
 EXPORT_SYMBOL_GPL(zs_compact);
 
@@ -2294,13 +2300,12 @@ static unsigned long zs_shrinker_scan(st
 	struct zs_pool *pool = container_of(shrinker, struct zs_pool,
 			shrinker);
 
-	pages_freed = pool->stats.pages_compacted;
 	/*
 	 * Compact classes and calculate compaction delta.
 	 * Can run concurrently with a manually triggered
 	 * (by user) compaction.
 	 */
-	pages_freed = zs_compact(pool) - pages_freed;
+	pages_freed = zs_compact(pool);
 
 	return pages_freed ? pages_freed : SHRINK_STOP;
 }

[PATCH 5.10 090/102] remoteproc/mediatek: Fix kernel test robot warning

[Greg Kroah-Hartman]

From: Souptick Joarder <jrdr.linux@gmail.com>

commit cca21000261b2364991ecdb0d9e66b26ad9c4b4e upstream.

Kernel test robot throws below warning ->

>> drivers/remoteproc/mtk_scp.c:755:37: warning: unused variable
>> 'mt8183_of_data' [-Wunused-const-variable]
   static const struct mtk_scp_of_data mt8183_of_data = {
                                       ^
>> drivers/remoteproc/mtk_scp.c:765:37: warning: unused variable
>> 'mt8192_of_data' [-Wunused-const-variable]
   static const struct mtk_scp_of_data mt8192_of_data = {
                                       ^
As suggested by Bjorn, there's no harm in just dropping the
of_match_ptr() wrapping of mtk_scp_of_match in the definition of
mtk_scp_driver and we avoid this whole problem.

Reported-by: kernel test robot <lkp@intel.com>
Suggested-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Link: https://lore.kernel.org/r/1606513855-21130-1-git-send-email-jrdr.linux@gmail.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/remoteproc/mtk_scp.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c
@@ -775,21 +775,19 @@ static const struct mtk_scp_of_data mt81
 	.host_to_scp_int_bit = MT8192_HOST_IPC_INT_BIT,
 };
 
-#if defined(CONFIG_OF)
 static const struct of_device_id mtk_scp_of_match[] = {
 	{ .compatible = "mediatek,mt8183-scp", .data = &mt8183_of_data },
 	{ .compatible = "mediatek,mt8192-scp", .data = &mt8192_of_data },
 	{},
 };
 MODULE_DEVICE_TABLE(of, mtk_scp_of_match);
-#endif
 
 static struct platform_driver mtk_scp_driver = {
 	.probe = scp_probe,
 	.remove = scp_remove,
 	.driver = {
 		.name = "mtk-scp",
-		.of_match_table = of_match_ptr(mtk_scp_of_match),
+		.of_match_table = mtk_scp_of_match,
 	},
 };
 

[PATCH 5.10 091/102] swap: fix swapfile read/write offset

[Greg Kroah-Hartman]

From: Jens Axboe <axboe@kernel.dk>

commit caf6912f3f4af7232340d500a4a2008f81b93f14 upstream.

We're not factoring in the start of the file for where to write and
read the swapfile, which leads to very unfortunate side effects of
writing where we should not be...

Fixes: dd6bd0d9c7db ("swap: use bdev_read_page() / bdev_write_page()")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Cc: Anthony Iliopoulos <ailiop@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/linux/swap.h |    1 +
 mm/page_io.c         |    5 -----
 mm/swapfile.c        |   13 +++++++++++++
 3 files changed, 14 insertions(+), 5 deletions(-)

--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -484,6 +484,7 @@ struct backing_dev_info;
 extern int init_swap_address_space(unsigned int type, unsigned long nr_pages);
 extern void exit_swap_address_space(unsigned int type);
 extern struct swap_info_struct *get_swap_device(swp_entry_t entry);
+sector_t swap_page_sector(struct page *page);
 
 static inline void put_swap_device(struct swap_info_struct *si)
 {
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -273,11 +273,6 @@ out:
 	return ret;
 }
 
-static sector_t swap_page_sector(struct page *page)
-{
-	return (sector_t)__page_file_index(page) << (PAGE_SHIFT - 9);
-}
-
 static inline void count_swpout_vm_event(struct page *page)
 {
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -220,6 +220,19 @@ offset_to_swap_extent(struct swap_info_s
 	BUG();
 }
 
+sector_t swap_page_sector(struct page *page)
+{
+	struct swap_info_struct *sis = page_swap_info(page);
+	struct swap_extent *se;
+	sector_t sector;
+	pgoff_t offset;
+
+	offset = __page_file_index(page);
+	se = offset_to_swap_extent(sis, offset);
+	sector = se->start_block + (offset - se->start_page);
+	return sector << (PAGE_SHIFT - 9);
+}
+
 /*
  * swap allocation tell device that a cluster of swap can now be discarded,
  * to allow the swap device to optimize its wear-levelling.

[PATCH 5.10 092/102] powerpc/sstep: Check instruction validity against ISA version before emulation

[Greg Kroah-Hartman]

From: Ananth N Mavinakayanahalli <ananth@linux.ibm.com>

commit 8813ff49607eab3caaf40fe8929b0ce7dc68e85f upstream.

We currently unconditionally try to emulate newer instructions on older
Power versions that could cause issues. Gate it.

Fixes: 350779a29f11 ("powerpc: Handle most loads and stores in instruction emulation code")
Signed-off-by: Ananth N Mavinakayanahalli <ananth@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/161157995977.64773.13794501093457185080.stgit@thinktux.local
[Dropped a few missing hunks for the backport to v5.10]
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/powerpc/lib/sstep.c |   72 ++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 59 insertions(+), 13 deletions(-)

--- a/arch/powerpc/lib/sstep.c
+++ b/arch/powerpc/lib/sstep.c
@@ -1241,9 +1241,11 @@ int analyse_instr(struct instruction_op
 		if ((word & 0xfe2) == 2)
 			op->type = SYSCALL;
 		else if (IS_ENABLED(CONFIG_PPC_BOOK3S_64) &&
-				(word & 0xfe3) == 1)
+				(word & 0xfe3) == 1) {	/* scv */
 			op->type = SYSCALL_VECTORED_0;
-		else
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				goto unknown_opcode;
+		} else
 			op->type = UNKNOWN;
 		return 0;
 #endif
@@ -1347,7 +1349,7 @@ int analyse_instr(struct instruction_op
 #ifdef __powerpc64__
 	case 1:
 		if (!cpu_has_feature(CPU_FTR_ARCH_31))
-			return -1;
+			goto unknown_opcode;
 
 		prefix_r = GET_PREFIX_R(word);
 		ra = GET_PREFIX_RA(suffix);
@@ -1381,7 +1383,7 @@ int analyse_instr(struct instruction_op
 #ifdef __powerpc64__
 	case 4:
 		if (!cpu_has_feature(CPU_FTR_ARCH_300))
-			return -1;
+			goto unknown_opcode;
 
 		switch (word & 0x3f) {
 		case 48:	/* maddhd */
@@ -1467,6 +1469,8 @@ int analyse_instr(struct instruction_op
 	case 19:
 		if (((word >> 1) & 0x1f) == 2) {
 			/* addpcis */
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				goto unknown_opcode;
 			imm = (short) (word & 0xffc1);	/* d0 + d2 fields */
 			imm |= (word >> 15) & 0x3e;	/* d1 field */
 			op->val = regs->nip + (imm << 16) + 4;
@@ -1779,7 +1783,7 @@ int analyse_instr(struct instruction_op
 #ifdef __powerpc64__
 		case 265:	/* modud */
 			if (!cpu_has_feature(CPU_FTR_ARCH_300))
-				return -1;
+				goto unknown_opcode;
 			op->val = regs->gpr[ra] % regs->gpr[rb];
 			goto compute_done;
 #endif
@@ -1789,7 +1793,7 @@ int analyse_instr(struct instruction_op
 
 		case 267:	/* moduw */
 			if (!cpu_has_feature(CPU_FTR_ARCH_300))
-				return -1;
+				goto unknown_opcode;
 			op->val = (unsigned int) regs->gpr[ra] %
 				(unsigned int) regs->gpr[rb];
 			goto compute_done;
@@ -1826,7 +1830,7 @@ int analyse_instr(struct instruction_op
 #endif
 		case 755:	/* darn */
 			if (!cpu_has_feature(CPU_FTR_ARCH_300))
-				return -1;
+				goto unknown_opcode;
 			switch (ra & 0x3) {
 			case 0:
 				/* 32-bit conditioned */
@@ -1848,14 +1852,14 @@ int analyse_instr(struct instruction_op
 #ifdef __powerpc64__
 		case 777:	/* modsd */
 			if (!cpu_has_feature(CPU_FTR_ARCH_300))
-				return -1;
+				goto unknown_opcode;
 			op->val = (long int) regs->gpr[ra] %
 				(long int) regs->gpr[rb];
 			goto compute_done;
 #endif
 		case 779:	/* modsw */
 			if (!cpu_has_feature(CPU_FTR_ARCH_300))
-				return -1;
+				goto unknown_opcode;
 			op->val = (int) regs->gpr[ra] %
 				(int) regs->gpr[rb];
 			goto compute_done;
@@ -1932,14 +1936,14 @@ int analyse_instr(struct instruction_op
 #endif
 		case 538:	/* cnttzw */
 			if (!cpu_has_feature(CPU_FTR_ARCH_300))
-				return -1;
+				goto unknown_opcode;
 			val = (unsigned int) regs->gpr[rd];
 			op->val = (val ? __builtin_ctz(val) : 32);
 			goto logical_done;
 #ifdef __powerpc64__
 		case 570:	/* cnttzd */
 			if (!cpu_has_feature(CPU_FTR_ARCH_300))
-				return -1;
+				goto unknown_opcode;
 			val = regs->gpr[rd];
 			op->val = (val ? __builtin_ctzl(val) : 64);
 			goto logical_done;
@@ -2049,7 +2053,7 @@ int analyse_instr(struct instruction_op
 		case 890:	/* extswsli with sh_5 = 0 */
 		case 891:	/* extswsli with sh_5 = 1 */
 			if (!cpu_has_feature(CPU_FTR_ARCH_300))
-				return -1;
+				goto unknown_opcode;
 			op->type = COMPUTE + SETREG;
 			sh = rb | ((word & 2) << 4);
 			val = (signed int) regs->gpr[rd];
@@ -2376,6 +2380,8 @@ int analyse_instr(struct instruction_op
 			break;
 
 		case 268:	/* lxvx */
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				goto unknown_opcode;
 			op->reg = rd | ((word & 1) << 5);
 			op->type = MKOP(LOAD_VSX, 0, 16);
 			op->element_size = 16;
@@ -2385,6 +2391,8 @@ int analyse_instr(struct instruction_op
 		case 269:	/* lxvl */
 		case 301: {	/* lxvll */
 			int nb;
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				goto unknown_opcode;
 			op->reg = rd | ((word & 1) << 5);
 			op->ea = ra ? regs->gpr[ra] : 0;
 			nb = regs->gpr[rb] & 0xff;
@@ -2404,6 +2412,8 @@ int analyse_instr(struct instruction_op
 			break;
 
 		case 364:	/* lxvwsx */
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				goto unknown_opcode;
 			op->reg = rd | ((word & 1) << 5);
 			op->type = MKOP(LOAD_VSX, 0, 4);
 			op->element_size = 4;
@@ -2411,6 +2421,8 @@ int analyse_instr(struct instruction_op
 			break;
 
 		case 396:	/* stxvx */
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				goto unknown_opcode;
 			op->reg = rd | ((word & 1) << 5);
 			op->type = MKOP(STORE_VSX, 0, 16);
 			op->element_size = 16;
@@ -2420,6 +2432,8 @@ int analyse_instr(struct instruction_op
 		case 397:	/* stxvl */
 		case 429: {	/* stxvll */
 			int nb;
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				goto unknown_opcode;
 			op->reg = rd | ((word & 1) << 5);
 			op->ea = ra ? regs->gpr[ra] : 0;
 			nb = regs->gpr[rb] & 0xff;
@@ -2464,6 +2478,8 @@ int analyse_instr(struct instruction_op
 			break;
 
 		case 781:	/* lxsibzx */
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				goto unknown_opcode;
 			op->reg = rd | ((word & 1) << 5);
 			op->type = MKOP(LOAD_VSX, 0, 1);
 			op->element_size = 8;
@@ -2471,6 +2487,8 @@ int analyse_instr(struct instruction_op
 			break;
 
 		case 812:	/* lxvh8x */
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				goto unknown_opcode;
 			op->reg = rd | ((word & 1) << 5);
 			op->type = MKOP(LOAD_VSX, 0, 16);
 			op->element_size = 2;
@@ -2478,6 +2496,8 @@ int analyse_instr(struct instruction_op
 			break;
 
 		case 813:	/* lxsihzx */
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				goto unknown_opcode;
 			op->reg = rd | ((word & 1) << 5);
 			op->type = MKOP(LOAD_VSX, 0, 2);
 			op->element_size = 8;
@@ -2491,6 +2511,8 @@ int analyse_instr(struct instruction_op
 			break;
 
 		case 876:	/* lxvb16x */
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				goto unknown_opcode;
 			op->reg = rd | ((word & 1) << 5);
 			op->type = MKOP(LOAD_VSX, 0, 16);
 			op->element_size = 1;
@@ -2504,6 +2526,8 @@ int analyse_instr(struct instruction_op
 			break;
 
 		case 909:	/* stxsibx */
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				goto unknown_opcode;
 			op->reg = rd | ((word & 1) << 5);
 			op->type = MKOP(STORE_VSX, 0, 1);
 			op->element_size = 8;
@@ -2511,6 +2535,8 @@ int analyse_instr(struct instruction_op
 			break;
 
 		case 940:	/* stxvh8x */
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				goto unknown_opcode;
 			op->reg = rd | ((word & 1) << 5);
 			op->type = MKOP(STORE_VSX, 0, 16);
 			op->element_size = 2;
@@ -2518,6 +2544,8 @@ int analyse_instr(struct instruction_op
 			break;
 
 		case 941:	/* stxsihx */
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				goto unknown_opcode;
 			op->reg = rd | ((word & 1) << 5);
 			op->type = MKOP(STORE_VSX, 0, 2);
 			op->element_size = 8;
@@ -2531,6 +2559,8 @@ int analyse_instr(struct instruction_op
 			break;
 
 		case 1004:	/* stxvb16x */
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				goto unknown_opcode;
 			op->reg = rd | ((word & 1) << 5);
 			op->type = MKOP(STORE_VSX, 0, 16);
 			op->element_size = 1;
@@ -2639,12 +2669,16 @@ int analyse_instr(struct instruction_op
 			op->type = MKOP(LOAD_FP, 0, 16);
 			break;
 		case 2:		/* lxsd */
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				goto unknown_opcode;
 			op->reg = rd + 32;
 			op->type = MKOP(LOAD_VSX, 0, 8);
 			op->element_size = 8;
 			op->vsx_flags = VSX_CHECK_VEC;
 			break;
 		case 3:		/* lxssp */
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				goto unknown_opcode;
 			op->reg = rd + 32;
 			op->type = MKOP(LOAD_VSX, 0, 4);
 			op->element_size = 8;
@@ -2681,6 +2715,8 @@ int analyse_instr(struct instruction_op
 			break;
 
 		case 1:		/* lxv */
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				goto unknown_opcode;
 			op->ea = dqform_ea(word, regs);
 			if (word & 8)
 				op->reg = rd + 32;
@@ -2691,6 +2727,8 @@ int analyse_instr(struct instruction_op
 
 		case 2:		/* stxsd with LSB of DS field = 0 */
 		case 6:		/* stxsd with LSB of DS field = 1 */
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				goto unknown_opcode;
 			op->ea = dsform_ea(word, regs);
 			op->reg = rd + 32;
 			op->type = MKOP(STORE_VSX, 0, 8);
@@ -2700,6 +2738,8 @@ int analyse_instr(struct instruction_op
 
 		case 3:		/* stxssp with LSB of DS field = 0 */
 		case 7:		/* stxssp with LSB of DS field = 1 */
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				goto unknown_opcode;
 			op->ea = dsform_ea(word, regs);
 			op->reg = rd + 32;
 			op->type = MKOP(STORE_VSX, 0, 4);
@@ -2708,6 +2748,8 @@ int analyse_instr(struct instruction_op
 			break;
 
 		case 5:		/* stxv */
+			if (!cpu_has_feature(CPU_FTR_ARCH_300))
+				goto unknown_opcode;
 			op->ea = dqform_ea(word, regs);
 			if (word & 8)
 				op->reg = rd + 32;
@@ -2737,7 +2779,7 @@ int analyse_instr(struct instruction_op
 		break;
 	case 1: /* Prefixed instructions */
 		if (!cpu_has_feature(CPU_FTR_ARCH_31))
-			return -1;
+			goto unknown_opcode;
 
 		prefix_r = GET_PREFIX_R(word);
 		ra = GET_PREFIX_RA(suffix);
@@ -2872,6 +2914,10 @@ int analyse_instr(struct instruction_op
 
 	return 0;
 
+ unknown_opcode:
+	op->type = UNKNOWN;
+	return 0;
+
  logical_done:
 	if (word & 1)
 		set_cr0(regs, op);

[PATCH 5.10 093/102] powerpc/sstep: Fix incorrect return from analyze_instr()

[Greg Kroah-Hartman]

From: Ananth N Mavinakayanahalli <ananth@linux.ibm.com>

commit 718aae916fa6619c57c348beaedd675835cf1aa1 upstream.

We currently just percolate the return value from analyze_instr()
to the caller of emulate_step(), especially if it is a -1.

For one particular case (opcode = 4) for instructions that aren't
currently emulated, we are returning 'should not be single-stepped'
while we should have returned 0 which says 'did not emulate, may
have to single-step'.

Fixes: 930d6288a26787 ("powerpc: sstep: Add support for maddhd, maddhdu, maddld instructions")
Signed-off-by: Ananth N Mavinakayanahalli <ananth@linux.ibm.com>
Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
Tested-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Reviewed-by: Sandipan Das <sandipan@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/161157999039.64773.14950289716779364766.stgit@thinktux.local
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/powerpc/lib/sstep.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

--- a/arch/powerpc/lib/sstep.c
+++ b/arch/powerpc/lib/sstep.c
@@ -1382,6 +1382,11 @@ int analyse_instr(struct instruction_op
 
 #ifdef __powerpc64__
 	case 4:
+		/*
+		 * There are very many instructions with this primary opcode
+		 * introduced in the ISA as early as v2.03. However, the ones
+		 * we currently emulate were all introduced with ISA 3.0
+		 */
 		if (!cpu_has_feature(CPU_FTR_ARCH_300))
 			goto unknown_opcode;
 
@@ -1409,7 +1414,7 @@ int analyse_instr(struct instruction_op
 		 * There are other instructions from ISA 3.0 with the same
 		 * primary opcode which do not have emulation support yet.
 		 */
-		return -1;
+		goto unknown_opcode;
 #endif
 
 	case 7:		/* mulli */

[PATCH 5.10 094/102] tty: fix up iterate_tty_read() EOVERFLOW handling

[Greg Kroah-Hartman]

From: Linus Torvalds <torvalds@linux-foundation.org>

commit e71a8d5cf4b4f274740e31b601216071e2a11afa upstream.

When I converted the tty_ldisc_ops 'read()' function to take a kernel
pointer, I was a bit too aggressive about the ldisc returning EOVERFLOW.

Yes, we want to have EOVERFLOW override any partially read data (because
the whole point is that the buffer was too small for the whole packet,
and we don't want to see partial packets), but it shouldn't override a
previous EFAULT.

And in fact, it really is just EOVERFLOW that is special and should
throw away any partially read data, not "any error".  Admittedly
EOVERFLOW is currently the only one that can happen for a continuation
read - and if the first read iteration returns an error we won't have this issue.

So this is more of a technicality, but let's just make the intent very
explicit, and re-organize the error handling a bit so that this is all
clearer.

Reported-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/CAHk-=wh+-rGsa=xruEWdg_fJViFG8rN9bpLrfLz=_yBYh2tBhA@mail.gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/tty_io.c |   19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -860,13 +860,20 @@ static int iterate_tty_read(struct tty_l
 		if (!size)
 			break;
 
-		/*
-		 * A ldisc read error return will override any previously copied
-		 * data (eg -EOVERFLOW from HDLC)
-		 */
 		if (size < 0) {
-			memzero_explicit(kernel_buf, sizeof(kernel_buf));
-			return size;
+			/* Did we have an earlier error (ie -EFAULT)? */
+			if (retval)
+				break;
+			retval = size;
+
+			/*
+			 * -EOVERFLOW means we didn't have enough space
+			 * for a whole packet, and we shouldn't return
+			 * a partial result.
+			 */
+			if (retval == -EOVERFLOW)
+				offset = 0;
+			break;
 		}
 
 		copied = copy_to_iter(kernel_buf, size, to);

[PATCH 5.10 095/102] tty: fix up hung_up_tty_read() conversion

[Greg Kroah-Hartman]

From: Linus Torvalds <torvalds@linux-foundation.org>

commit ddc5fda7456178e2cbc87675b370920d98360daf upstream.

In commit "tty: implement read_iter", I left the read_iter conversion of
the hung up tty case alone, because I incorrectly thought it didn't
matter.

Jiri showed me the errors of my ways, and pointed out the problems with
that incomplete conversion.  Fix it all up.

Reported-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/CAHk-=wh+-rGsa=xruEWdg_fJViFG8rN9bpLrfLz=_yBYh2tBhA@mail.gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/tty_io.c |    9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -429,8 +429,7 @@ struct tty_driver *tty_find_polling_driv
 EXPORT_SYMBOL_GPL(tty_find_polling_driver);
 #endif
 
-static ssize_t hung_up_tty_read(struct file *file, char __user *buf,
-				size_t count, loff_t *ppos)
+static ssize_t hung_up_tty_read(struct kiocb *iocb, struct iov_iter *to)
 {
 	return 0;
 }
@@ -502,7 +501,7 @@ static const struct file_operations cons
 
 static const struct file_operations hung_up_tty_fops = {
 	.llseek		= no_llseek,
-	.read		= hung_up_tty_read,
+	.read_iter	= hung_up_tty_read,
 	.write_iter	= hung_up_tty_write,
 	.poll		= hung_up_tty_poll,
 	.unlocked_ioctl	= hung_up_tty_ioctl,
@@ -929,8 +928,10 @@ static ssize_t tty_read(struct kiocb *io
 	/* We want to wait for the line discipline to sort out in this
 	   situation */
 	ld = tty_ldisc_ref_wait(tty);
+	if (!ld)
+		return hung_up_tty_read(iocb, to);
 	i = -EIO;
-	if (ld && ld->ops->read)
+	if (ld->ops->read)
 		i = iterate_tty_read(ld, tty, file, to);
 	tty_ldisc_deref(ld);
 

[PATCH 5.10 096/102] tty: clean up legacy leftovers from n_tty line discipline

[Greg Kroah-Hartman]

From: Linus Torvalds <torvalds@linux-foundation.org>

commit 64a69892afadd6fffaeadc65427bb7601161139d upstream.

Back when the line disciplines did their own direct user accesses, they
had to deal with the data copy possibly failing in the middle.

Now that the user copy is done by the tty_io.c code, that failure case
no longer exists.

Remove the left-over error handling code that cannot trigger.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/n_tty.c |   29 +++++++++--------------------
 1 file changed, 9 insertions(+), 20 deletions(-)

--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -1955,19 +1955,17 @@ static inline int input_available_p(stru
  *		read_tail published
  */
 
-static int copy_from_read_buf(struct tty_struct *tty,
+static void copy_from_read_buf(struct tty_struct *tty,
 				      unsigned char **kbp,
 				      size_t *nr)
 
 {
 	struct n_tty_data *ldata = tty->disc_data;
-	int retval;
 	size_t n;
 	bool is_eof;
 	size_t head = smp_load_acquire(&ldata->commit_head);
 	size_t tail = ldata->read_tail & (N_TTY_BUF_SIZE - 1);
 
-	retval = 0;
 	n = min(head - ldata->read_tail, N_TTY_BUF_SIZE - tail);
 	n = min(*nr, n);
 	if (n) {
@@ -1984,7 +1982,6 @@ static int copy_from_read_buf(struct tty
 		*kbp += n;
 		*nr -= n;
 	}
-	return retval;
 }
 
 /**
@@ -2010,9 +2007,9 @@ static int copy_from_read_buf(struct tty
  *		read_tail published
  */
 
-static int canon_copy_from_read_buf(struct tty_struct *tty,
-				    unsigned char **kbp,
-				    size_t *nr)
+static void canon_copy_from_read_buf(struct tty_struct *tty,
+				     unsigned char **kbp,
+				     size_t *nr)
 {
 	struct n_tty_data *ldata = tty->disc_data;
 	size_t n, size, more, c;
@@ -2022,7 +2019,7 @@ static int canon_copy_from_read_buf(stru
 
 	/* N.B. avoid overrun if nr == 0 */
 	if (!*nr)
-		return 0;
+		return;
 
 	n = min(*nr + 1, smp_load_acquire(&ldata->canon_head) - ldata->read_tail);
 
@@ -2069,7 +2066,6 @@ static int canon_copy_from_read_buf(stru
 			ldata->push = 0;
 		tty_audit_push();
 	}
-	return 0;
 }
 
 /**
@@ -2219,24 +2215,17 @@ static ssize_t n_tty_read(struct tty_str
 		}
 
 		if (ldata->icanon && !L_EXTPROC(tty)) {
-			retval = canon_copy_from_read_buf(tty, &kb, &nr);
-			if (retval)
-				break;
+			canon_copy_from_read_buf(tty, &kb, &nr);
 		} else {
-			int uncopied;
-
 			/* Deal with packet mode. */
 			if (packet && kb == kbuf) {
 				*kb++ = TIOCPKT_DATA;
 				nr--;
 			}
 
-			uncopied = copy_from_read_buf(tty, &kb, &nr);
-			uncopied += copy_from_read_buf(tty, &kb, &nr);
-			if (uncopied) {
-				retval = -EFAULT;
-				break;
-			}
+			/* See comment above copy_from_read_buf() why twice */
+			copy_from_read_buf(tty, &kb, &nr);
+			copy_from_read_buf(tty, &kb, &nr);
 		}
 
 		n_tty_check_unthrottle(tty);

[PATCH 5.10 097/102] tty: teach n_tty line discipline about the new "cookie continuations"

[Greg Kroah-Hartman]

From: Linus Torvalds <torvalds@linux-foundation.org>

commit 15ea8ae8e03fdb845ed3ff5d9f11dd5f4f60252c upstream.

With the conversion to do the tty ldisc read operations in small chunks,
the n_tty line discipline became noticeably slower for throughput
oriented loads, because rather than read things in up to 2kB chunks, it
would return at most 64 bytes per read() system call.

The cost is mainly all in the "do system calls over and over", not
really in the new "copy to an extra kernel buffer".

This can be fixed by teaching the n_tty line discipline about the
"cookie continuation" model, which the chunking code supports because
things like hdlc need to be able to handle packets up to 64kB in size.

Doing that doesn't just get us back to the old performace, but to much
better performance: my stupid "copy 10MB of data over a pty" test
program is now almost twice as fast as it used to be (going down from
0.1s to 0.054s).

This is entirely because it now creates maximal chunks (which happens to
be "one byte less than one page" due to how we do the circular tty
buffers).

NOTE! This case only handles the simpler non-icanon case, which is the
one where people may care about throughput.  I'm going to do the icanon
case later too, because while performance isn't a major issue for that,
there may be programs that think they'll always get a full line and
don't like the 64-byte chunking for that reason.

Such programs are arguably buggy (signals etc can cause random partial
results from tty reads anyway), and good programs will handle such
partial reads, but expecting everybody to write "good programs" has
never been a winning policy for the kernel..

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/n_tty.c |   52 ++++++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 42 insertions(+), 10 deletions(-)

--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -1943,19 +1943,17 @@ static inline int input_available_p(stru
  *	Helper function to speed up n_tty_read.  It is only called when
  *	ICANON is off; it copies characters straight from the tty queue.
  *
- *	It can be profitably called twice; once to drain the space from
- *	the tail pointer to the (physical) end of the buffer, and once
- *	to drain the space from the (physical) beginning of the buffer
- *	to head pointer.
- *
  *	Called under the ldata->atomic_read_lock sem
  *
+ *	Returns true if it successfully copied data, but there is still
+ *	more data to be had.
+ *
  *	n_tty_read()/consumer path:
  *		caller holds non-exclusive termios_rwsem
  *		read_tail published
  */
 
-static void copy_from_read_buf(struct tty_struct *tty,
+static bool copy_from_read_buf(struct tty_struct *tty,
 				      unsigned char **kbp,
 				      size_t *nr)
 
@@ -1978,10 +1976,14 @@ static void copy_from_read_buf(struct tt
 		/* Turn single EOF into zero-length read */
 		if (L_EXTPROC(tty) && ldata->icanon && is_eof &&
 		    (head == ldata->read_tail))
-			n = 0;
+			return false;
 		*kbp += n;
 		*nr -= n;
+
+		/* If we have more to copy, let the caller know */
+		return head != ldata->read_tail;
 	}
+	return false;
 }
 
 /**
@@ -2129,6 +2131,25 @@ static ssize_t n_tty_read(struct tty_str
 	int packet;
 	size_t tail;
 
+	/*
+	 * Is this a continuation of a read started earler?
+	 *
+	 * If so, we still hold the atomic_read_lock and the
+	 * termios_rwsem, and can just continue to copy data.
+	 */
+	if (*cookie) {
+		if (copy_from_read_buf(tty, &kb, &nr))
+			return kb - kbuf;
+
+		/* No more data - release locks and stop retries */
+		n_tty_kick_worker(tty);
+		n_tty_check_unthrottle(tty);
+		up_read(&tty->termios_rwsem);
+		mutex_unlock(&ldata->atomic_read_lock);
+		*cookie = NULL;
+		return kb - kbuf;
+	}
+
 	c = job_control(tty, file);
 	if (c < 0)
 		return c;
@@ -2223,9 +2244,20 @@ static ssize_t n_tty_read(struct tty_str
 				nr--;
 			}
 
-			/* See comment above copy_from_read_buf() why twice */
-			copy_from_read_buf(tty, &kb, &nr);
-			copy_from_read_buf(tty, &kb, &nr);
+			/*
+			 * Copy data, and if there is more to be had
+			 * and we have nothing more to wait for, then
+			 * let's mark us for retries.
+			 *
+			 * NOTE! We return here with both the termios_sem
+			 * and atomic_read_lock still held, the retries
+			 * will release them when done.
+			 */
+			if (copy_from_read_buf(tty, &kb, &nr) && kb - kbuf >= minimum) {
+				remove_wait_queue(&tty->read_wait, &wait);
+				*cookie = cookie;
+				return kb - kbuf;
+			}
 		}
 
 		n_tty_check_unthrottle(tty);

[PATCH 5.10 098/102] tty: teach the n_tty ICANON case about the new "cookie continuations" too

[Greg Kroah-Hartman]

From: Linus Torvalds <torvalds@linux-foundation.org>

commit d7fe75cbc23c7d225eee2ef04def239b6603dce7 upstream.

The ICANON case is a bit messy, since it has to look for the line
ending, and has special code to then suppress line ending characters if
they match the __DISABLED_CHAR.  So it actually looks up the line ending
even past the point where it knows it won't copy it to the result
buffer.

That said, apart from all those odd legacy N_TTY ICANON cases, the
actual "should we continue copying" logic isn't really all that
complicated or different from the non-canon case.  In fact, the lack of
"wait for at least N characters" arguably makes the repeat case slightly
simpler.  It really just boils down to "there's more of the line to be
copied".

So add the necessarily trivial logic, and now the N_TTY case will give
long result lines even when in canon mode.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/n_tty.c |   26 +++++++++++++++++++-------
 1 file changed, 19 insertions(+), 7 deletions(-)

--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -2009,21 +2009,22 @@ static bool copy_from_read_buf(struct tt
  *		read_tail published
  */
 
-static void canon_copy_from_read_buf(struct tty_struct *tty,
+static bool canon_copy_from_read_buf(struct tty_struct *tty,
 				     unsigned char **kbp,
 				     size_t *nr)
 {
 	struct n_tty_data *ldata = tty->disc_data;
 	size_t n, size, more, c;
 	size_t eol;
-	size_t tail;
+	size_t tail, canon_head;
 	int found = 0;
 
 	/* N.B. avoid overrun if nr == 0 */
 	if (!*nr)
-		return;
+		return false;
 
-	n = min(*nr + 1, smp_load_acquire(&ldata->canon_head) - ldata->read_tail);
+	canon_head = smp_load_acquire(&ldata->canon_head);
+	n = min(*nr + 1, canon_head - ldata->read_tail);
 
 	tail = ldata->read_tail & (N_TTY_BUF_SIZE - 1);
 	size = min_t(size_t, tail + n, N_TTY_BUF_SIZE);
@@ -2067,7 +2068,11 @@ static void canon_copy_from_read_buf(str
 		else
 			ldata->push = 0;
 		tty_audit_push();
+		return false;
 	}
+
+	/* No EOL found - do a continuation retry if there is more data */
+	return ldata->read_tail != canon_head;
 }
 
 /**
@@ -2138,8 +2143,13 @@ static ssize_t n_tty_read(struct tty_str
 	 * termios_rwsem, and can just continue to copy data.
 	 */
 	if (*cookie) {
-		if (copy_from_read_buf(tty, &kb, &nr))
-			return kb - kbuf;
+		if (ldata->icanon && !L_EXTPROC(tty)) {
+			if (canon_copy_from_read_buf(tty, &kb, &nr))
+				return kb - kbuf;
+		} else {
+			if (copy_from_read_buf(tty, &kb, &nr))
+				return kb - kbuf;
+		}
 
 		/* No more data - release locks and stop retries */
 		n_tty_kick_worker(tty);
@@ -2236,7 +2246,8 @@ static ssize_t n_tty_read(struct tty_str
 		}
 
 		if (ldata->icanon && !L_EXTPROC(tty)) {
-			canon_copy_from_read_buf(tty, &kb, &nr);
+			if (canon_copy_from_read_buf(tty, &kb, &nr))
+				goto more_to_be_read;
 		} else {
 			/* Deal with packet mode. */
 			if (packet && kb == kbuf) {
@@ -2254,6 +2265,7 @@ static ssize_t n_tty_read(struct tty_str
 			 * will release them when done.
 			 */
 			if (copy_from_read_buf(tty, &kb, &nr) && kb - kbuf >= minimum) {
+more_to_be_read:
 				remove_wait_queue(&tty->read_wait, &wait);
 				*cookie = cookie;
 				return kb - kbuf;

[PATCH 5.10 099/102] media: v4l: ioctl: Fix memory leak in video_usercopy

[Greg Kroah-Hartman]

From: Sakari Ailus <sakari.ailus@linux.intel.com>

commit fb18802a338b36f675a388fc03d2aa504a0d0899 upstream.

When an IOCTL with argument size larger than 128 that also used array
arguments were handled, two memory allocations were made but alas, only
the latter one of them was released. This happened because there was only
a single local variable to hold such a temporary allocation.

Fix this by adding separate variables to hold the pointers to the
temporary allocations.

Reported-by: Arnd Bergmann <arnd@kernel.org>
Reported-by: syzbot+1115e79c8df6472c612b@syzkaller.appspotmail.com
Fixes: d14e6d76ebf7 ("[media] v4l: Add multi-planar ioctl handling code")
Cc: stable@vger.kernel.org
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/media/v4l2-core/v4l2-ioctl.c |   19 +++++++------------
 1 file changed, 7 insertions(+), 12 deletions(-)

--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -3251,7 +3251,7 @@ video_usercopy(struct file *file, unsign
 	       v4l2_kioctl func)
 {
 	char	sbuf[128];
-	void    *mbuf = NULL;
+	void    *mbuf = NULL, *array_buf = NULL;
 	void	*parg = (void *)arg;
 	long	err  = -EINVAL;
 	bool	has_array_args;
@@ -3286,20 +3286,14 @@ video_usercopy(struct file *file, unsign
 	has_array_args = err;
 
 	if (has_array_args) {
-		/*
-		 * When adding new types of array args, make sure that the
-		 * parent argument to ioctl (which contains the pointer to the
-		 * array) fits into sbuf (so that mbuf will still remain
-		 * unused up to here).
-		 */
-		mbuf = kvmalloc(array_size, GFP_KERNEL);
+		array_buf = kvmalloc(array_size, GFP_KERNEL);
 		err = -ENOMEM;
-		if (NULL == mbuf)
+		if (array_buf == NULL)
 			goto out_array_args;
 		err = -EFAULT;
-		if (copy_from_user(mbuf, user_ptr, array_size))
+		if (copy_from_user(array_buf, user_ptr, array_size))
 			goto out_array_args;
-		*kernel_ptr = mbuf;
+		*kernel_ptr = array_buf;
 	}
 
 	/* Handles IOCTL */
@@ -3318,7 +3312,7 @@ video_usercopy(struct file *file, unsign
 
 	if (has_array_args) {
 		*kernel_ptr = (void __force *)user_ptr;
-		if (copy_to_user(user_ptr, mbuf, array_size))
+		if (copy_to_user(user_ptr, array_buf, array_size))
 			err = -EFAULT;
 		goto out_array_args;
 	}
@@ -3333,6 +3327,7 @@ out_array_args:
 	if (video_put_user((void __user *)arg, parg, orig_cmd))
 		err = -EFAULT;
 out:
+	kvfree(array_buf);
 	kvfree(mbuf);
 	return err;
 }

[PATCH 5.10 100/102] ALSA: hda/realtek: Add quirk for Clevo NH55RZQ

[Greg Kroah-Hartman]

From: Eckhart Mohr <e.mohr@tuxedocomputers.com>

commit 48698c973e6b4dde94d87cd1ded56d9436e9c97d upstream.

This applies a SND_PCI_QUIRK(...) to the Clevo NH55RZQ barebone. This
fixes the issue of the device not recognizing a pluged in microphone.

The device has both, a microphone only jack, and a speaker + microphone
combo jack. The combo jack already works. The microphone-only jack does
not recognize when a device is pluged in without this patch.

Signed-off-by: Eckhart Mohr <e.mohr@tuxedocomputers.com>
Co-developed-by: Werner Sembach <wse@tuxedocomputers.com>
Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/0eee6545-5169-ef08-6cfa-5def8cd48c86@tuxedocomputers.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 sound/pci/hda/patch_realtek.c |    1 +
 1 file changed, 1 insertion(+)

--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -8128,6 +8128,7 @@ static const struct snd_pci_quirk alc269
 	SND_PCI_QUIRK(0x1558, 0x8551, "System76 Gazelle (gaze14)", ALC293_FIXUP_SYSTEM76_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x1558, 0x8560, "System76 Gazelle (gaze14)", ALC269_FIXUP_HEADSET_MIC),
 	SND_PCI_QUIRK(0x1558, 0x8561, "System76 Gazelle (gaze14)", ALC269_FIXUP_HEADSET_MIC),
+	SND_PCI_QUIRK(0x1558, 0x8562, "Clevo NH[5|7][0-9]RZ[Q]", ALC269_FIXUP_DMIC),
 	SND_PCI_QUIRK(0x1558, 0x8668, "Clevo NP50B[BE]", ALC293_FIXUP_SYSTEM76_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x1558, 0x8680, "Clevo NJ50LU", ALC293_FIXUP_SYSTEM76_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x1558, 0x8686, "Clevo NH50[CZ]U", ALC293_FIXUP_SYSTEM76_MIC_NO_PRESENCE),

[PATCH 5.10 101/102] ALSA: hda/realtek: Add quirk for Intel NUC 10

[Greg Kroah-Hartman]

From: Werner Sembach <wse@tuxedocomputers.com>

commit 73e7161eab5dee98114987239ec9c87fe8034ddb upstream.

This adds a new SND_PCI_QUIRK(...) and applies it to the Intel NUC 10
devices. This fixes the issue of the devices not having audio input and
output on the headset jack because the kernel does not recognize when
something is plugged in.

The new quirk was inspired by the quirk for the Intel NUC 8 devices, but
it turned out that the NUC 10 uses another pin. This information was
acquired by black box testing likely pins.

Co-developed-by: Eckhart Mohr <e.mohr@tuxedocomputers.com>
Signed-off-by: Eckhart Mohr <e.mohr@tuxedocomputers.com>
Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210302180414.23194-1-wse@tuxedocomputers.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 sound/pci/hda/patch_realtek.c |   11 +++++++++++
 1 file changed, 11 insertions(+)

--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -6396,6 +6396,7 @@ enum {
 	ALC269_FIXUP_LEMOTE_A1802,
 	ALC269_FIXUP_LEMOTE_A190X,
 	ALC256_FIXUP_INTEL_NUC8_RUGGED,
+	ALC256_FIXUP_INTEL_NUC10,
 	ALC255_FIXUP_XIAOMI_HEADSET_MIC,
 	ALC274_FIXUP_HP_MIC,
 	ALC274_FIXUP_HP_HEADSET_MIC,
@@ -7782,6 +7783,15 @@ static const struct hda_fixup alc269_fix
 		.chained = true,
 		.chain_id = ALC269_FIXUP_HEADSET_MODE
 	},
+	[ALC256_FIXUP_INTEL_NUC10] = {
+		.type = HDA_FIXUP_PINS,
+		.v.pins = (const struct hda_pintbl[]) {
+			{ 0x19, 0x01a1913c }, /* use as headset mic, without its own jack detect */
+			{ }
+		},
+		.chained = true,
+		.chain_id = ALC269_FIXUP_HEADSET_MODE
+	},
 	[ALC255_FIXUP_XIAOMI_HEADSET_MIC] = {
 		.type = HDA_FIXUP_VERBS,
 		.v.verbs = (const struct hda_verb[]) {
@@ -8223,6 +8233,7 @@ static const struct snd_pci_quirk alc269
 	SND_PCI_QUIRK(0x1c06, 0x2013, "Lemote A1802", ALC269_FIXUP_LEMOTE_A1802),
 	SND_PCI_QUIRK(0x1c06, 0x2015, "Lemote A190X", ALC269_FIXUP_LEMOTE_A190X),
 	SND_PCI_QUIRK(0x8086, 0x2080, "Intel NUC 8 Rugged", ALC256_FIXUP_INTEL_NUC8_RUGGED),
+	SND_PCI_QUIRK(0x8086, 0x2081, "Intel NUC 10", ALC256_FIXUP_INTEL_NUC10),
 
 #if 0
 	/* Below is a quirk table taken from the old code.

[PATCH 5.10 102/102] ALSA: hda/realtek: Apply dual codec quirks for MSI Godlike X570 board

[Greg Kroah-Hartman]

From: Takashi Iwai <tiwai@suse.de>

commit 26af17722a07597d3e556eda92c6fce8d528bc9f upstream.

There is another MSI board (1462:cc34) that has dual Realtek codecs,
and we need to apply the existing quirk for fixing the conflicts of
Master control.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=211743
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210303142346.28182-1-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 |    1 +
 1 file changed, 1 insertion(+)

--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -2532,6 +2532,7 @@ static const struct snd_pci_quirk alc882
 	SND_PCI_QUIRK(0x1462, 0x1276, "MSI-GL73", ALC1220_FIXUP_CLEVO_P950),
 	SND_PCI_QUIRK(0x1462, 0x1293, "MSI-GP65", ALC1220_FIXUP_CLEVO_P950),
 	SND_PCI_QUIRK(0x1462, 0x7350, "MSI-7350", ALC889_FIXUP_CD),
+	SND_PCI_QUIRK(0x1462, 0xcc34, "MSI Godlike X570", ALC1220_FIXUP_GB_DUAL_CODECS),
 	SND_PCI_QUIRK(0x1462, 0xda57, "MSI Z270-Gaming", ALC1220_FIXUP_GB_DUAL_CODECS),
 	SND_PCI_QUIRK_VENDOR(0x1462, "MSI", ALC882_FIXUP_GPIO3),
 	SND_PCI_QUIRK(0x147b, 0x107a, "Abit AW9D-MAX", ALC882_FIXUP_ABIT_AW9D_MAX),

Re: [PATCH 5.10 000/102] 5.10.21-rc1 review

[Jon Hunter]

On Fri, 05 Mar 2021 13:20:19 +0100, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.10.21 release.
> There are 102 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 Sun, 07 Mar 2021 12:08:39 +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/v5.x/stable-review/patch-5.10.21-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-5.10.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h

All tests passing for Tegra ...

Test results for stable-v5.10:
    12 builds:	12 pass, 0 fail
    26 boots:	26 pass, 0 fail
    65 tests:	65 pass, 0 fail

Linux version:	5.10.21-rc1-g80aaabbaf433
Boards tested:	tegra124-jetson-tk1, tegra186-p2771-0000,
                tegra194-p2972-0000, tegra20-ventana,
                tegra210-p2371-2180, tegra210-p3450-0000,
                tegra30-cardhu-a04

Tested-by: Jon Hunter <jonathanh@nvidia.com>

Jon

Re: [PATCH 5.10 000/102] 5.10.21-rc1 review

[Pavel Machek]

[-- Attachment #1: Type: text/plain, Size: 892 bytes --]

Hi!

> This is the start of the stable review cycle for the 5.10.21 release.
> There are 102 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.

Here situation is similar to 4.4

[   27.349919] <LAVA_SIGNAL_TESTCASE TEST_CASE_ID=CVE-2017-5715 RESULT=fail>
Received signal: <TESTCASE> TEST_CASE_ID=CVE-2017-5715 RESULT=fail

So I see some kind of failure, and this time I suspect real kernel
problem.

https://lava.ciplatform.org/scheduler/job/171825

4.19 has similar problem:

https://lava.ciplatform.org/scheduler/job/171812

Again, Ccing Chris, but it looks like something is wrong there.

Best regards,

								Pavel

-- 
DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany

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Re: [PATCH 5.10 083/102] scsi: iscsi: Restrict sessions and handles to admin capabilities

[Pavel Machek]

[-- Attachment #1: Type: text/plain, Size: 1252 bytes --]

Hi!

> From: Lee Duncan <lduncan@suse.com>
> 
> commit 688e8128b7a92df982709a4137ea4588d16f24aa upstream.
> 
> Protect the iSCSI transport handle, available in sysfs, by requiring
> CAP_SYS_ADMIN to read it. Also protect the netlink socket by restricting
> reception of messages to ones sent with CAP_SYS_ADMIN. This disables
> normal users from being able to end arbitrary iSCSI sessions.

Should not normal filesystem permissions be used?

> +++ b/drivers/scsi/scsi_transport_iscsi.c
> @@ -132,6 +132,9 @@ show_transport_handle(struct device *dev
>  		      char *buf)
>  {
>  	struct iscsi_internal *priv = dev_to_iscsi_internal(dev);
> +
> +	if (!capable(CAP_SYS_ADMIN))
> +		return -EACCES;
>  	return sprintf(buf, "%llu\n", (unsigned long long)iscsi_handle(priv->iscsi_transport));
>  }
>  static DEVICE_ATTR(handle, S_IRUGO, show_transport_handle, NULL);

AFAICT we make the file 0444 (world readable) and then fail the read
with capability check. If the file is not supposed to be
world-readable, it should have 0400 permissions, right?

Best regards,
								Pavel
-- 
DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany

[-- Attachment #2: Digital signature --]
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Re: [PATCH 5.10 083/102] scsi: iscsi: Restrict sessions and handles to admin capabilities

[Lee Duncan]

On 3/5/21 2:42 PM, Pavel Machek wrote:
> Hi!
> 
>> From: Lee Duncan <lduncan@suse.com>
>>
>> commit 688e8128b7a92df982709a4137ea4588d16f24aa upstream.
>>
>> Protect the iSCSI transport handle, available in sysfs, by requiring
>> CAP_SYS_ADMIN to read it. Also protect the netlink socket by restricting
>> reception of messages to ones sent with CAP_SYS_ADMIN. This disables
>> normal users from being able to end arbitrary iSCSI sessions.
> 
> Should not normal filesystem permissions be used?
> 
>> +++ b/drivers/scsi/scsi_transport_iscsi.c
>> @@ -132,6 +132,9 @@ show_transport_handle(struct device *dev
>>  		      char *buf)
>>  {
>>  	struct iscsi_internal *priv = dev_to_iscsi_internal(dev);
>> +
>> +	if (!capable(CAP_SYS_ADMIN))
>> +		return -EACCES;
>>  	return sprintf(buf, "%llu\n", (unsigned long long)iscsi_handle(priv->iscsi_transport));
>>  }
>>  static DEVICE_ATTR(handle, S_IRUGO, show_transport_handle, NULL);
> 
> AFAICT we make the file 0444 (world readable) and then fail the read
> with capability check. If the file is not supposed to be
> world-readable, it should have 0400 permissions, right?
> 
> Best regards,
> 								Pavel
> 

I am ok with changing file permissions, but there's nothing wrong with
checking capabilities upon entry, as well, since capability checks are a
higher degree of security than ACLs.
-- 
Lee Duncan

Re: [PATCH 5.10 000/102] 5.10.21-rc1 review

[Guenter Roeck]

On Fri, Mar 05, 2021 at 01:20:19PM +0100, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.10.21 release.
> There are 102 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 Sun, 07 Mar 2021 12:08:39 +0000.
> Anything received after that time might be too late.
> 

Building arm:realview-pb-a8:realview_defconfig:realview_pb:mem512:arm-realview-pba8:initrd ... failed
------------
Error log:
kernel/rcu/tree.c:683:2: error: implicit declaration of function 'IRQ_WORK_INIT'

Guenter

Re: [PATCH 5.10 000/102] 5.10.21-rc1 review

[Florian Fainelli]

On 3/5/2021 4:20 AM, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.10.21 release.
> There are 102 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 Sun, 07 Mar 2021 12:08:39 +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/v5.x/stable-review/patch-5.10.21-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-5.10.y
> and the diffstat can be found below.
> 
> thanks,

On ARCH_BRCMSTB, using 32-bit and 64-bit ARM kernels:

Tested-by: Florian Fainelli <f.fainelli@gmail.com>
-- 
Florian

Re: [PATCH 5.10 000/102] 5.10.21-rc1 review

[Samuel Zou]

On 2021/3/5 20:20, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.10.21 release.
> There are 102 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 Sun, 07 Mar 2021 12:08:39 +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/v5.x/stable-review/patch-5.10.21-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-5.10.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h

Our test CI monitored the 5.10.21-rc1, and compile failure on arm64:

Kernel repo: 
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
Branch: linux-5.10.y
Arch: arm64/x86
Version: 5.10.21-rc1+
Commit: 80aaabbaf433294d1f075981fa3785d7f4b55159
Compiler: gcc version 7.3.0 (GCC)


arm64 (compile failure)
--------------------------------------------------------------------
Kernel build failed, error log:
kernel/rcu/tree.c:683:2: error: implicit declaration of function 
‘IRQ_WORK_INIT’; did you mean ‘QSTR_INIT’? 
[-Werror=implicit-function-declaration]
   IRQ_WORK_INIT(late_wakeup_func);
   ^~~~~~~~~~~~~
   QSTR_INIT
kernel/rcu/tree.c:683:2: error: invalid initializer


x86 (No kernel failures)
--------------------------------------------------------------------
Testcase Result Summary:
total_num: 4716
succeed_num: 4714
failed_num: 2
timeout_num: 0

Tested-by: Hulk Robot <hulkci@huawei.com>

Re: [PATCH 5.10 000/102] 5.10.21-rc1 review

[Naresh Kamboju]

On Fri, 5 Mar 2021 at 17:59, Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
>
> This is the start of the stable review cycle for the 5.10.21 release.
> There are 102 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 Sun, 07 Mar 2021 12:08:39 +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/v5.x/stable-review/patch-5.10.21-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-5.10.y
> and the diffstat can be found below.
>
> thanks,
>
> greg k-h

Results from Linaro’s test farm.
No regressions on arm64, arm, x86_64, and i386.

Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>

Summary
------------------------------------------------------------------------

kernel: 5.10.21-rc1
git repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
git branch: linux-5.10.y
git commit: 80aaabbaf433294d1f075981fa3785d7f4b55159
git describe: v5.10.20-103-g80aaabbaf433
Test details: https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-5.10.y/build/v5.10.20-103-g80aaabbaf433

No regressions (compared to build v5.10.20)

fixes (compared to build v5.10.20)
------------------
  ltp-pty-tests:
    * hangup01


Ran 65964 total tests in the following environments and test suites.

Environments
--------------
- arc
- arm
- arm64
- dragonboard-410c
- hi6220-hikey
- i386
- juno-r2
- juno-r2-compat
- juno-r2-kasan
- mips
- nxp-ls2088
- nxp-ls2088-64k_page_size
- parisc
- powerpc
- qemu-arm-clang
- qemu-arm64-clang
- qemu-arm64-kasan
- qemu-i386-clang
- qemu-x86_64-clang
- qemu-x86_64-kasan
- qemu-x86_64-kcsan
- qemu_arm
- qemu_arm64
- qemu_arm64-compat
- qemu_i386
- qemu_x86_64
- qemu_x86_64-compat
- riscv
- s390
- sh
- sparc
- x15
- x86
- x86-kasan
- x86_64

Test Suites
-----------
* build
* linux-log-parser
* install-android-platform-tools-r2600
* kselftest-net
* kselftest-netfilter
* kselftest-nsfs
* kselftest-tc-testing
* kselftest-timens
* kselftest-timers
* kselftest-tmpfs
* kselftest-tpm2
* kselftest-user
* kselftest-zram
* kvm-unit-tests
* libhugetlbfs
* ltp-commands-tests
* ltp-cve-tests
* ltp-fcntl-locktests-tests
* ltp-filecaps-tests
* ltp-fs-tests
* ltp-fs_bind-tests
* ltp-fs_perms_simple-tests
* ltp-fsx-tests
* ltp-hugetlb-tests
* ltp-ipc-tests
* ltp-math-tests
* ltp-mm-tests
* ltp-nptl-tests
* ltp-pty-tests
* ltp-sched-tests
* ltp-securebits-tests
* ltp-syscalls-tests
* ltp-tracing-tests
* v4l2-compliance
* fwts
* kselftest-
* kselftest-bpf
* kselftest-efivarfs
* kselftest-filesystems
* kselftest-firmware
* kselftest-fpu
* kselftest-futex
* kselftest-gpio
* kselftest-intel_pstate
* kselftest-ipc
* kselftest-ir
* kselftest-kcmp
* kselftest-lib
* kselftest-livepatch
* kselftest-membarrier
* kselftest-memfd
* kselftest-memory-hotplug
* kselftest-mincore
* kselftest-mount
* kselftest-mqueue
* kselftest-openat2
* kselftest-pid_namespace
* kselftest-pidfd
* kselftest-proc
* kselftest-pstore
* kselftest-ptrace
* ltp-cap_bounds-tests
* ltp-cpuhotplug-tests
* ltp-crypto-tests
* ltp-dio-tests
* ltp-io-tests
* network-basic-tests
* kselftest-android
* kselftest-capabilities
* kselftest-cgroup
* kselftest-clone3
* kselftest-core
* kselftest-cpu-hotplug
* kselftest-cpufreq
* kselftest-kexec
* kselftest-kvm
* kselftest-lkdtm
* kselftest-rseq
* kselftest-rtc
* kselftest-seccomp
* kselftest-sigaltstack
* kselftest-size
* kselftest-splice
* kselftest-static_keys
* kselftest-sync
* kselftest-sysctl
* kselftest-vm
* kselftest-x86
* ltp-containers-tests
* ltp-controllers-tests
* ltp-open-posix-tests
* perf
* kunit
* rcutorture
* kselftest-vsyscall-mode-native-
* kselftest-vsyscall-mode-none-
* ssuite

-- 
Linaro LKFT
https://lkft.linaro.org

Re: [PATCH 5.10 000/102] 5.10.21-rc1 review

[Greg Kroah-Hartman]

On Fri, Mar 05, 2021 at 07:24:28PM -0800, Guenter Roeck wrote:
> On Fri, Mar 05, 2021 at 01:20:19PM +0100, Greg Kroah-Hartman wrote:
> > This is the start of the stable review cycle for the 5.10.21 release.
> > There are 102 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 Sun, 07 Mar 2021 12:08:39 +0000.
> > Anything received after that time might be too late.
> > 
> 
> Building arm:realview-pb-a8:realview_defconfig:realview_pb:mem512:arm-realview-pba8:initrd ... failed
> ------------
> Error log:
> kernel/rcu/tree.c:683:2: error: implicit declaration of function 'IRQ_WORK_INIT'

Ugh, I thought I dropped that patch last round, I'll go do it again
later today, thanks for catching this...

greg k-h

Re: [PATCH 5.10 000/102] 5.10.21-rc1 review

[Guenter Roeck]

On Fri, Mar 05, 2021 at 01:20:19PM +0100, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.10.21 release.
> There are 102 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 Sun, 07 Mar 2021 12:08:39 +0000.
> Anything received after that time might be too late.
> 

Build results:
	total: 156 pass: 156 fail: 0
Qemu test results:
	total: 430 pass: 426 fail: 4
Failed tests:
	arm:realview-pb-a8:realview_defconfig:realview_pb:mem512:arm-realview-pba8:initrd
	arm:realview-pbx-a9:realview_defconfig:realview_pb:arm-realview-pbx-a9:initrd
	arm:realview-eb:realview_defconfig:realview_eb:mem512:arm-realview-eb:initrd
	arm:realview-eb-mpcore:realview_defconfig:realview_eb:mem512:arm-realview-eb-11mp-ctrevb:initrd

kernel/rcu/tree.c:683:2: error: implicit declaration of function 'IRQ_WORK_INIT'

Guenter

Re: [PATCH 5.10 000/102] 5.10.21-rc1 review

[Greg Kroah-Hartman]

On Sat, Mar 06, 2021 at 10:54:40AM +0100, Greg Kroah-Hartman wrote:
> On Fri, Mar 05, 2021 at 07:24:28PM -0800, Guenter Roeck wrote:
> > On Fri, Mar 05, 2021 at 01:20:19PM +0100, Greg Kroah-Hartman wrote:
> > > This is the start of the stable review cycle for the 5.10.21 release.
> > > There are 102 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 Sun, 07 Mar 2021 12:08:39 +0000.
> > > Anything received after that time might be too late.
> > > 
> > 
> > Building arm:realview-pb-a8:realview_defconfig:realview_pb:mem512:arm-realview-pba8:initrd ... failed
> > ------------
> > Error log:
> > kernel/rcu/tree.c:683:2: error: implicit declaration of function 'IRQ_WORK_INIT'
> 
> Ugh, I thought I dropped that patch last round, I'll go do it again
> later today, thanks for catching this...

I did drop it, and Sasha added it back, hopefully it really doesn't come
back without a working backport this time :)

greg k-h

Re: [PATCH 5.10 000/102] 5.10.21-rc1 review

[Greg Kroah-Hartman]

On Sat, Mar 06, 2021 at 02:25:44PM +0800, Samuel Zou wrote:
> 
> 
> On 2021/3/5 20:20, Greg Kroah-Hartman wrote:
> > This is the start of the stable review cycle for the 5.10.21 release.
> > There are 102 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 Sun, 07 Mar 2021 12:08:39 +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/v5.x/stable-review/patch-5.10.21-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-5.10.y
> > and the diffstat can be found below.
> > 
> > thanks,
> > 
> > greg k-h
> 
> Our test CI monitored the 5.10.21-rc1, and compile failure on arm64:
> 
> Kernel repo:
> https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
> Branch: linux-5.10.y
> Arch: arm64/x86
> Version: 5.10.21-rc1+
> Commit: 80aaabbaf433294d1f075981fa3785d7f4b55159
> Compiler: gcc version 7.3.0 (GCC)
> 
> 
> arm64 (compile failure)
> --------------------------------------------------------------------
> Kernel build failed, error log:
> kernel/rcu/tree.c:683:2: error: implicit declaration of function
> ‘IRQ_WORK_INIT’; did you mean ‘QSTR_INIT’?
> [-Werror=implicit-function-declaration]
>   IRQ_WORK_INIT(late_wakeup_func);
>   ^~~~~~~~~~~~~
>   QSTR_INIT
> kernel/rcu/tree.c:683:2: error: invalid initializer
> 
> 
> x86 (No kernel failures)
> --------------------------------------------------------------------
> Testcase Result Summary:
> total_num: 4716
> succeed_num: 4714
> failed_num: 2
> timeout_num: 0
> 
> Tested-by: Hulk Robot <hulkci@huawei.com>

Thanks for testing and letting me know.

greg k-h

Re: [PATCH 5.10 000/102] 5.10.21-rc1 review

[Greg Kroah-Hartman]

On Fri, Mar 05, 2021 at 09:31:52PM -0800, Florian Fainelli wrote:
> 
> 
> On 3/5/2021 4:20 AM, Greg Kroah-Hartman wrote:
> > This is the start of the stable review cycle for the 5.10.21 release.
> > There are 102 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 Sun, 07 Mar 2021 12:08:39 +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/v5.x/stable-review/patch-5.10.21-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-5.10.y
> > and the diffstat can be found below.
> > 
> > thanks,
> 
> On ARCH_BRCMSTB, using 32-bit and 64-bit ARM kernels:
> 
> Tested-by: Florian Fainelli <f.fainelli@gmail.com>

Thanks for testing and letting me know.

greg k-h

Re: [PATCH 5.10 000/102] 5.10.21-rc1 review

[Pavel Machek]

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Hi!

> > This is the start of the stable review cycle for the 5.10.21 release.
> > There are 102 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.
> 
> Here situation is similar to 4.4
> 
> [   27.349919] <LAVA_SIGNAL_TESTCASE TEST_CASE_ID=CVE-2017-5715 RESULT=fail>
> Received signal: <TESTCASE> TEST_CASE_ID=CVE-2017-5715 RESULT=fail
> 
> So I see some kind of failure, and this time I suspect real kernel
> problem.
> 
> https://lava.ciplatform.org/scheduler/job/171825
> 
> 4.19 has similar problem:
> 
> https://lava.ciplatform.org/scheduler/job/171812
> 
> Again, Ccing Chris, but it looks like something is wrong there.

It went away after I reran the tests, and the old tests failed due to
timeout. So it looks like server with qemu was overloaded or something
like that. There are still failures, but they are "boards not
available" kind, so not a kernel problem.

https://gitlab.com/cip-project/cip-testing/linux-stable-rc-ci/-/tree/linux-5.10.y

Tested-by: Pavel Machek (CIP) <pavel@denx.de>

Best regards,
                                                                Pavel

-- 
DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany

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Re: [PATCH 5.10 000/102] 5.10.21-rc1 review

[Greg Kroah-Hartman]

On Sun, Mar 07, 2021 at 06:18:25PM +0100, Pavel Machek wrote:
> Hi!
> 
> > > This is the start of the stable review cycle for the 5.10.21 release.
> > > There are 102 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.
> > 
> > Here situation is similar to 4.4
> > 
> > [   27.349919] <LAVA_SIGNAL_TESTCASE TEST_CASE_ID=CVE-2017-5715 RESULT=fail>
> > Received signal: <TESTCASE> TEST_CASE_ID=CVE-2017-5715 RESULT=fail
> > 
> > So I see some kind of failure, and this time I suspect real kernel
> > problem.
> > 
> > https://lava.ciplatform.org/scheduler/job/171825
> > 
> > 4.19 has similar problem:
> > 
> > https://lava.ciplatform.org/scheduler/job/171812
> > 
> > Again, Ccing Chris, but it looks like something is wrong there.
> 
> It went away after I reran the tests, and the old tests failed due to
> timeout. So it looks like server with qemu was overloaded or something
> like that. There are still failures, but they are "boards not
> available" kind, so not a kernel problem.
> 
> https://gitlab.com/cip-project/cip-testing/linux-stable-rc-ci/-/tree/linux-5.10.y
> 
> Tested-by: Pavel Machek (CIP) <pavel@denx.de>

Thanks for tracking this down and letting me know.

greg k-h

Re: [PATCH 5.10 031/102] net: fix dev_ifsioc_locked() race condition

[Pavel Machek]

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Hi!

> commit 3b23a32a63219f51a5298bc55a65ecee866e79d0 upstream.
> 
> dev_ifsioc_locked() is called with only RCU read lock, so when
> there is a parallel writer changing the mac address, it could
> get a partially updated mac address, as shown below:
> 
> Thread 1			Thread 2
> // eth_commit_mac_addr_change()
> memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
> 				// dev_ifsioc_locked()
> 				memcpy(ifr->ifr_hwaddr.sa_data,
> 					dev->dev_addr,...);
> 
> Close this race condition by guarding them with a RW semaphore,
> like netdev_get_name(). We can not use seqlock here as it does not

I guess it may fix a race, but... does it leak kernel stack data to
userland?


> +++ b/drivers/net/tap.c
> @@ -1093,10 +1093,9 @@ static long tap_ioctl(struct file *file,
>  			return -ENOLINK;
>  		}
>  		ret = 0;
> -		u = tap->dev->type;
> +		dev_get_mac_address(&sa, dev_net(tap->dev), tap->dev->name);
>  		if (copy_to_user(&ifr->ifr_name, tap->dev->name, IFNAMSIZ) ||
> -		    copy_to_user(&ifr->ifr_hwaddr.sa_data, tap->dev->dev_addr, ETH_ALEN) ||
> -		    put_user(u, &ifr->ifr_hwaddr.sa_family))
> +		    copy_to_user(&ifr->ifr_hwaddr, &sa, sizeof(sa)))
>  			ret = -EFAULT;
>  		tap_put_tap_dev(tap);
>  		rtnl_unlock();

We copy whole "struct sockaddr".

> +int dev_get_mac_address(struct sockaddr *sa, struct net *net, char *dev_name)
> +{
> +	size_t size = sizeof(sa->sa_data);
> +	struct net_device *dev;
> +	int ret = 0;
...
> +	if (!dev->addr_len)
> +		memset(sa->sa_data, 0, size);
> +	else
> +		memcpy(sa->sa_data, dev->dev_addr,
> +		       min_t(size_t, size, dev->addr_len));

But we only coppied dev->addr_len bytes in.

This would be very simple way to plug the leak.

Signed-off-by: Pavel Machek (CIP) <pavel@denx.de>

diff --git a/net/core/dev.c b/net/core/dev.c
index 75ca6c6d01d6..b67ff23a1f0d 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -8714,11 +8714,9 @@ int dev_get_mac_address(struct sockaddr *sa, struct net *net, char *dev_name)
 		ret = -ENODEV;
 		goto unlock;
 	}
-	if (!dev->addr_len)
-		memset(sa->sa_data, 0, size);
-	else
-		memcpy(sa->sa_data, dev->dev_addr,
-		       min_t(size_t, size, dev->addr_len));
+	memset(sa->sa_data, 0, size);
+	memcpy(sa->sa_data, dev->dev_addr,
+	       min_t(size_t, size, dev->addr_len));
 	sa->sa_family = dev->type;
 
 unlock:

Best regards,
								Pavel

-- 
DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 195 bytes --]

Re: [PATCH 5.10 031/102] net: fix dev_ifsioc_locked() race condition

[Greg Kroah-Hartman]

On Mon, Mar 08, 2021 at 01:50:57PM +0100, Pavel Machek wrote:
> Hi!
> 
> > commit 3b23a32a63219f51a5298bc55a65ecee866e79d0 upstream.
> > 
> > dev_ifsioc_locked() is called with only RCU read lock, so when
> > there is a parallel writer changing the mac address, it could
> > get a partially updated mac address, as shown below:
> > 
> > Thread 1			Thread 2
> > // eth_commit_mac_addr_change()
> > memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
> > 				// dev_ifsioc_locked()
> > 				memcpy(ifr->ifr_hwaddr.sa_data,
> > 					dev->dev_addr,...);
> > 
> > Close this race condition by guarding them with a RW semaphore,
> > like netdev_get_name(). We can not use seqlock here as it does not
> 
> I guess it may fix a race, but... does it leak kernel stack data to
> userland?
> 
> 
> > +++ b/drivers/net/tap.c
> > @@ -1093,10 +1093,9 @@ static long tap_ioctl(struct file *file,
> >  			return -ENOLINK;
> >  		}
> >  		ret = 0;
> > -		u = tap->dev->type;
> > +		dev_get_mac_address(&sa, dev_net(tap->dev), tap->dev->name);
> >  		if (copy_to_user(&ifr->ifr_name, tap->dev->name, IFNAMSIZ) ||
> > -		    copy_to_user(&ifr->ifr_hwaddr.sa_data, tap->dev->dev_addr, ETH_ALEN) ||
> > -		    put_user(u, &ifr->ifr_hwaddr.sa_family))
> > +		    copy_to_user(&ifr->ifr_hwaddr, &sa, sizeof(sa)))
> >  			ret = -EFAULT;
> >  		tap_put_tap_dev(tap);
> >  		rtnl_unlock();
> 
> We copy whole "struct sockaddr".
> 
> > +int dev_get_mac_address(struct sockaddr *sa, struct net *net, char *dev_name)
> > +{
> > +	size_t size = sizeof(sa->sa_data);
> > +	struct net_device *dev;
> > +	int ret = 0;
> ...
> > +	if (!dev->addr_len)
> > +		memset(sa->sa_data, 0, size);
> > +	else
> > +		memcpy(sa->sa_data, dev->dev_addr,
> > +		       min_t(size_t, size, dev->addr_len));
> 
> But we only coppied dev->addr_len bytes in.
> 
> This would be very simple way to plug the leak.
> 
> Signed-off-by: Pavel Machek (CIP) <pavel@denx.de>
> 
> diff --git a/net/core/dev.c b/net/core/dev.c
> index 75ca6c6d01d6..b67ff23a1f0d 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -8714,11 +8714,9 @@ int dev_get_mac_address(struct sockaddr *sa, struct net *net, char *dev_name)
>  		ret = -ENODEV;
>  		goto unlock;
>  	}
> -	if (!dev->addr_len)
> -		memset(sa->sa_data, 0, size);
> -	else
> -		memcpy(sa->sa_data, dev->dev_addr,
> -		       min_t(size_t, size, dev->addr_len));
> +	memset(sa->sa_data, 0, size);
> +	memcpy(sa->sa_data, dev->dev_addr,
> +	       min_t(size_t, size, dev->addr_len));
>  	sa->sa_family = dev->type;
>  
>  unlock:
> 

Please submit this change properly to the networking developers, they
are not going to pick anything up this way.

greg k-h