[PATCH 5.10 000/100] 5.10.96-rc1 review

[PATCH 5.10 000/100] 5.10.96-rc1 review

[Greg Kroah-Hartman]

This is the start of the stable review cycle for the 5.10.96 release.
There are 100 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 Wed, 02 Feb 2022 10:51:59 +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-5.10.96-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 5.10.96-rc1

OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
    block: Fix wrong offset in bio_truncate()

Amir Goldstein <amir73il@gmail.com>
    fsnotify: invalidate dcache before IN_DELETE event

Dmitry V. Levin <ldv@altlinux.org>
    usr/include/Makefile: add linux/nfc.h to the compile-test coverage

Marc Kleine-Budde <mkl@pengutronix.de>
    dt-bindings: can: tcan4x5x: fix mram-cfg RX FIFO config

Tim Yi <tim.yi@pica8.com>
    net: bridge: vlan: fix memory leak in __allowed_ingress

Eric Dumazet <edumazet@google.com>
    ipv4: remove sparse error in ip_neigh_gw4()

Eric Dumazet <edumazet@google.com>
    ipv4: tcp: send zero IPID in SYNACK messages

Eric Dumazet <edumazet@google.com>
    ipv4: raw: lock the socket in raw_bind()

Nikolay Aleksandrov <nikolay@nvidia.com>
    net: bridge: vlan: fix single net device option dumping

Guillaume Nault <gnault@redhat.com>
    Revert "ipv6: Honor all IPv6 PIO Valid Lifetime values"

Yufeng Mo <moyufeng@huawei.com>
    net: hns3: handle empty unknown interrupt for VF

Toke Høiland-Jørgensen <toke@redhat.com>
    net: cpsw: Properly initialise struct page_pool_params

Hangyu Hua <hbh25y@gmail.com>
    yam: fix a memory leak in yam_siocdevprivate()

José Expósito <jose.exposito89@gmail.com>
    drm/msm/dpu: invalid parameter check in dpu_setup_dspp_pcc

Miaoqian Lin <linmq006@gmail.com>
    drm/msm/hdmi: Fix missing put_device() call in msm_hdmi_get_phy

Michael Kelley <mikelley@microsoft.com>
    video: hyperv_fb: Fix validation of screen resolution

Sukadev Bhattiprolu <sukadev@linux.ibm.com>
    ibmvnic: don't spin in tasklet

Sukadev Bhattiprolu <sukadev@linux.ibm.com>
    ibmvnic: init ->running_cap_crqs early

Jakub Kicinski <kuba@kernel.org>
    ipv4: fix ip option filtering for locally generated fragments

Yajun Deng <yajun.deng@linux.dev>
    net: ipv4: Fix the warning for dereference

Yajun Deng <yajun.deng@linux.dev>
    net: ipv4: Move ip_options_fragment() out of loop

Athira Rajeev <atrajeev@linux.vnet.ibm.com>
    powerpc/perf: Fix power_pmu_disable to call clear_pmi_irq_pending only if PMI is pending

Guenter Roeck <linux@roeck-us.net>
    hwmon: (lm90) Mark alert as broken for MAX6654

Mihai Carabas <mihai.carabas@oracle.com>
    efi/libstub: arm64: Fix image check alignment at entry

David Howells <dhowells@redhat.com>
    rxrpc: Adjust retransmission backoff

Subbaraya Sundeep <sbhatta@marvell.com>
    octeontx2-pf: Forward error codes to VF

Marek Behún <kabel@kernel.org>
    phylib: fix potential use-after-free

Robert Hancock <robert.hancock@calian.com>
    net: phy: broadcom: hook up soft_reset for BCM54616S

Vincent Guittot <vincent.guittot@linaro.org>
    sched/pelt: Relax the sync of util_sum with util_avg

Peter Zijlstra <peterz@infradead.org>
    perf: Fix perf_event_read_local() time

Randy Dunlap <rdunlap@infradead.org>
    kernel: delete repeated words in comments

Florian Westphal <fw@strlen.de>
    netfilter: conntrack: don't increment invalid counter on NF_REPEAT

Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
    powerpc64/bpf: Limit 'ldbrx' to processors compliant with ISA v2.06

Trond Myklebust <trond.myklebust@hammerspace.com>
    NFS: Ensure the server has an up to date ctime before renaming

Trond Myklebust <trond.myklebust@hammerspace.com>
    NFS: Ensure the server has an up to date ctime before hardlinking

Eric Dumazet <edumazet@google.com>
    ipv6: annotate accesses to fn->fn_sernum

José Expósito <jose.exposito89@gmail.com>
    drm/msm/dsi: invalid parameter check in msm_dsi_phy_enable

Miaoqian Lin <linmq006@gmail.com>
    drm/msm/dsi: Fix missing put_device() call in dsi_get_phy

Xianting Tian <xianting.tian@linux.alibaba.com>
    drm/msm: Fix wrong size calculation

Jianguo Wu <wujianguo@chinatelecom.cn>
    net-procfs: show net devices bound packet types

Trond Myklebust <trond.myklebust@hammerspace.com>
    NFSv4: nfs_atomic_open() can race when looking up a non-regular file

Trond Myklebust <trond.myklebust@hammerspace.com>
    NFSv4: Handle case where the lookup of a directory fails

Guenter Roeck <linux@roeck-us.net>
    hwmon: (lm90) Reduce maximum conversion rate for G781

Eric Dumazet <edumazet@google.com>
    ipv4: avoid using shared IP generator for connected sockets

Xin Long <lucien.xin@gmail.com>
    ping: fix the sk_bound_dev_if match in ping_lookup

Guenter Roeck <linux@roeck-us.net>
    hwmon: (lm90) Mark alert as broken for MAX6680

Guenter Roeck <linux@roeck-us.net>
    hwmon: (lm90) Mark alert as broken for MAX6646/6647/6649

Congyu Liu <liu3101@purdue.edu>
    net: fix information leakage in /proc/net/ptype

sparkhuang <huangshaobo6@huawei.com>
    ARM: 9170/1: fix panic when kasan and kprobe are enabled

Ido Schimmel <idosch@nvidia.com>
    ipv6_tunnel: Rate limit warning messages

John Meneghini <jmeneghi@redhat.com>
    scsi: bnx2fc: Flush destroy_work queue before calling bnx2fc_interface_put()

Matthias Kaehlcke <mka@chromium.org>
    rpmsg: char: Fix race between the release of rpmsg_eptdev and cdev

Sujit Kautkar <sujitka@chromium.org>
    rpmsg: char: Fix race between the release of rpmsg_ctrldev and cdev

Linyu Yuan <quic_linyyuan@quicinc.com>
    usb: roles: fix include/linux/usb/role.h compile issue

Joe Damato <jdamato@fastly.com>
    i40e: fix unsigned stat widths

Karen Sornek <karen.sornek@intel.com>
    i40e: Fix for failed to init adminq while VF reset

Sylwester Dziedziuch <sylwesterx.dziedziuch@intel.com>
    i40e: Fix queues reservation for XDP

Jedrzej Jagielski <jedrzej.jagielski@intel.com>
    i40e: Fix issue when maximum queues is exceeded

Jedrzej Jagielski <jedrzej.jagielski@intel.com>
    i40e: Increase delay to 1 s after global EMP reset

Christophe Leroy <christophe.leroy@csgroup.eu>
    powerpc/32: Fix boot failure with GCC latent entropy plugin

Christophe Leroy <christophe.leroy@csgroup.eu>
    powerpc/32s: Fix kasan_init_region() for KASAN

Christophe Leroy <christophe.leroy@csgroup.eu>
    powerpc/32s: Allocate one 256k IBAT instead of two consecutives 128k IBATs

Yazen Ghannam <yazen.ghannam@amd.com>
    x86/MCE/AMD: Allow thresholding interface updates after init

Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
    sched/membarrier: Fix membarrier-rseq fence command missing from query bitmask

Joseph Qi <joseph.qi@linux.alibaba.com>
    ocfs2: fix a deadlock when commit trans

Joseph Qi <joseph.qi@linux.alibaba.com>
    jbd2: export jbd2_journal_[grab|put]_journal_head

Sing-Han Chen <singhanc@nvidia.com>
    ucsi_ccg: Check DEV_INT bit only when starting CCG4

Badhri Jagan Sridharan <badhri@google.com>
    usb: typec: tcpm: Do not disconnect while receiving VBUS off

Alan Stern <stern@rowland.harvard.edu>
    USB: core: Fix hang in usb_kill_urb by adding memory barriers

Pavankumar Kondeti <quic_pkondeti@quicinc.com>
    usb: gadget: f_sourcesink: Fix isoc transfer for USB_SPEED_SUPER_PLUS

Jon Hunter <jonathanh@nvidia.com>
    usb: common: ulpi: Fix crash in ulpi_match()

Frank Li <Frank.Li@nxp.com>
    usb: xhci-plat: fix crash when suspend if remote wake enable

Alan Stern <stern@rowland.harvard.edu>
    usb-storage: Add unusual-devs entry for VL817 USB-SATA bridge

Cameron Williams <cang1@live.co.uk>
    tty: Add support for Brainboxes UC cards.

daniel.starke@siemens.com <daniel.starke@siemens.com>
    tty: n_gsm: fix SW flow control encoding/handling

Valentin Caron <valentin.caron@foss.st.com>
    serial: stm32: fix software flow control transfer

Robert Hancock <robert.hancock@calian.com>
    serial: 8250: of: Fix mapped region size when using reg-offset property

Pablo Neira Ayuso <pablo@netfilter.org>
    netfilter: nft_payload: do not update layer 4 checksum when mangling fragments

D Scott Phillips <scott@os.amperecomputing.com>
    arm64: errata: Fix exec handling in erratum 1418040 workaround

Like Xu <likexu@tencent.com>
    KVM: x86: Update vCPU's runtime CPUID on write to MSR_IA32_XSS

Lucas Stach <l.stach@pengutronix.de>
    drm/etnaviv: relax submit size limits

Zhengjun Xing <zhengjun.xing@linux.intel.com>
    perf/x86/intel/uncore: Fix CAS_COUNT_WRITE issue for ICX

Sean Christopherson <seanjc@google.com>
    Revert "KVM: SVM: avoid infinite loop on NPF from bad address"

Amir Goldstein <amir73il@gmail.com>
    fsnotify: fix fsnotify hooks in pseudo filesystems

Jeff Layton <jlayton@kernel.org>
    ceph: set pool_ns in new inode layout for async creates

Jeff Layton <jlayton@kernel.org>
    ceph: properly put ceph_string reference after async create attempt

Tom Zanussi <zanussi@kernel.org>
    tracing: Don't inc err_log entry count if entry allocation fails

Xiaoke Wang <xkernel.wang@foxmail.com>
    tracing/histogram: Fix a potential memory leak for kstrdup()

Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    PM: wakeup: simplify the output logic of pm_show_wakelocks()

Ard Biesheuvel <ardb@kernel.org>
    efi: runtime: avoid EFIv2 runtime services on Apple x86 machines

Jan Kara <jack@suse.cz>
    udf: Fix NULL ptr deref when converting from inline format

Jan Kara <jack@suse.cz>
    udf: Restore i_lenAlloc when inode expansion fails

Steffen Maier <maier@linux.ibm.com>
    scsi: zfcp: Fix failed recovery on gone remote port with non-NPIV FCP devices

Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
    bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack()

Vasily Gorbik <gor@linux.ibm.com>
    s390/hypfs: include z/VM guests with access control group set

Ilya Leoshkevich <iii@linux.ibm.com>
    s390/module: fix loading modules with a lot of relocations

Mohammad Athari Bin Ismail <mohammad.athari.ismail@intel.com>
    net: stmmac: skip only stmmac_ptp_register when resume from suspend

Marek Behún <kabel@kernel.org>
    net: sfp: ignore disabled SFP node

Stanimir Varbanov <stanimir.varbanov@linaro.org>
    media: venus: core: Drop second v4l2 device unregister

Brian Gix <brian.gix@intel.com>
    Bluetooth: refactor malicious adv data check


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

Diffstat:

 .../devicetree/bindings/net/can/tcan4x5x.txt       |   2 +-
 Makefile                                           |   4 +-
 arch/arm/probes/kprobes/Makefile                   |   3 +
 arch/arm64/kernel/process.c                        |  39 ++--
 arch/powerpc/include/asm/book3s/32/mmu-hash.h      |   2 +
 arch/powerpc/include/asm/ppc-opcode.h              |   1 +
 arch/powerpc/kernel/Makefile                       |   1 +
 arch/powerpc/lib/Makefile                          |   3 +
 arch/powerpc/mm/book3s32/mmu.c                     |  15 +-
 arch/powerpc/mm/kasan/book3s_32.c                  |  59 ++---
 arch/powerpc/net/bpf_jit_comp64.c                  |  22 +-
 arch/powerpc/perf/core-book3s.c                    |  17 +-
 arch/s390/hypfs/hypfs_vm.c                         |   6 +-
 arch/s390/kernel/module.c                          |  37 ++-
 arch/x86/events/intel/uncore_snbep.c               |   2 +-
 arch/x86/kernel/cpu/mce/amd.c                      |   2 +-
 arch/x86/kvm/svm/svm.c                             |   7 -
 arch/x86/kvm/x86.c                                 |   1 +
 block/bio.c                                        |   3 +-
 drivers/firmware/efi/efi.c                         |   7 +
 drivers/firmware/efi/libstub/arm64-stub.c          |   6 +-
 drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c       |   4 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c        |  11 +-
 drivers/gpu/drm/msm/dsi/dsi.c                      |   7 +-
 drivers/gpu/drm/msm/dsi/phy/dsi_phy.c              |   4 +-
 drivers/gpu/drm/msm/hdmi/hdmi.c                    |   7 +-
 drivers/gpu/drm/msm/msm_drv.c                      |   2 +-
 drivers/hwmon/lm90.c                               |   7 +-
 drivers/media/platform/qcom/venus/core.c           |   2 -
 .../ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c  |   3 +-
 drivers/net/ethernet/ibm/ibmvnic.c                 | 112 +++++----
 drivers/net/ethernet/intel/i40e/i40e.h             |   9 +-
 drivers/net/ethernet/intel/i40e/i40e_debugfs.c     |   2 +-
 drivers/net/ethernet/intel/i40e/i40e_main.c        |  44 ++--
 drivers/net/ethernet/intel/i40e/i40e_register.h    |   3 +
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 103 ++++++++-
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h |   1 +
 .../net/ethernet/marvell/octeontx2/nic/otx2_pf.c   |   7 +-
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c  |  20 +-
 drivers/net/ethernet/ti/cpsw_priv.c                |   2 +-
 drivers/net/hamradio/yam.c                         |   4 +-
 drivers/net/phy/broadcom.c                         |   1 +
 drivers/net/phy/phy_device.c                       |   6 +-
 drivers/net/phy/sfp-bus.c                          |   5 +
 drivers/rpmsg/rpmsg_char.c                         |  22 +-
 drivers/s390/scsi/zfcp_fc.c                        |  13 +-
 drivers/scsi/bnx2fc/bnx2fc_fcoe.c                  |  20 +-
 drivers/tty/n_gsm.c                                |   4 +-
 drivers/tty/serial/8250/8250_of.c                  |  11 +-
 drivers/tty/serial/8250/8250_pci.c                 | 100 +++++++-
 drivers/tty/serial/stm32-usart.c                   |   2 +-
 drivers/usb/common/ulpi.c                          |   7 +-
 drivers/usb/core/hcd.c                             |  14 ++
 drivers/usb/core/urb.c                             |  12 +
 drivers/usb/gadget/function/f_sourcesink.c         |   1 +
 drivers/usb/host/xhci-plat.c                       |   3 +
 drivers/usb/storage/unusual_devs.h                 |  10 +
 drivers/usb/typec/tcpm/tcpm.c                      |   3 +-
 drivers/usb/typec/ucsi/ucsi_ccg.c                  |   2 +-
 drivers/video/fbdev/hyperv_fb.c                    |  16 +-
 fs/btrfs/ioctl.c                                   |   6 +-
 fs/ceph/file.c                                     |   9 +
 fs/configfs/dir.c                                  |   6 +-
 fs/devpts/inode.c                                  |   2 +-
 fs/jbd2/journal.c                                  |   2 +
 fs/namei.c                                         |  10 +-
 fs/nfs/dir.c                                       |  22 ++
 fs/nfsd/nfsctl.c                                   |   5 +-
 fs/ocfs2/suballoc.c                                |  25 +-
 fs/udf/inode.c                                     |   9 +-
 include/linux/fsnotify.h                           |  48 +++-
 include/linux/netdevice.h                          |   1 +
 include/linux/perf_event.h                         |  15 +-
 include/linux/usb/role.h                           |   6 +
 include/net/addrconf.h                             |   2 +
 include/net/ip.h                                   |  21 +-
 include/net/ip6_fib.h                              |   2 +-
 include/net/route.h                                |   2 +-
 kernel/bpf/stackmap.c                              |   5 +-
 kernel/events/core.c                               | 252 ++++++++++++---------
 kernel/events/uprobes.c                            |   2 +-
 kernel/locking/rtmutex.c                           |   4 +-
 kernel/locking/rwsem.c                             |   2 +-
 kernel/locking/semaphore.c                         |   2 +-
 kernel/power/wakelock.c                            |  11 +-
 kernel/sched/fair.c                                |  18 +-
 kernel/sched/membarrier.c                          |  11 +-
 kernel/sched/pelt.h                                |   4 +-
 kernel/trace/trace.c                               |   3 +-
 kernel/trace/trace_events_hist.c                   |   1 +
 net/bluetooth/hci_event.c                          |  10 +-
 net/bridge/br_vlan.c                               |   9 +-
 net/core/net-procfs.c                              |  38 +++-
 net/ipv4/ip_output.c                               |  41 ++--
 net/ipv4/ping.c                                    |   3 +-
 net/ipv4/raw.c                                     |   5 +-
 net/ipv6/addrconf.c                                |  27 ++-
 net/ipv6/ip6_fib.c                                 |  23 +-
 net/ipv6/ip6_tunnel.c                              |   8 +-
 net/ipv6/route.c                                   |   2 +-
 net/netfilter/nf_conntrack_core.c                  |   8 +-
 net/netfilter/nft_payload.c                        |   3 +
 net/packet/af_packet.c                             |   2 +
 net/rxrpc/call_event.c                             |   8 +-
 net/rxrpc/output.c                                 |   2 +-
 net/sunrpc/rpc_pipe.c                              |   4 +-
 usr/include/Makefile                               |   1 -
 virt/kvm/kvm_main.c                                |   1 -
 108 files changed, 1018 insertions(+), 530 deletions(-)

[PATCH 5.10 001/100] Bluetooth: refactor malicious adv data check

[Greg Kroah-Hartman]

From: Brian Gix <brian.gix@intel.com>

commit 899663be5e75dc0174dc8bda0b5e6826edf0b29a upstream.

Check for out-of-bound read was being performed at the end of while
num_reports loop, and would fill journal with false positives. Added
check to beginning of loop processing so that it doesn't get checked
after ptr has been advanced.

Signed-off-by: Brian Gix <brian.gix@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Cc: syphyr <syphyr@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/bluetooth/hci_event.c |   10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -5661,6 +5661,11 @@ static void hci_le_adv_report_evt(struct
 		struct hci_ev_le_advertising_info *ev = ptr;
 		s8 rssi;
 
+		if (ptr > (void *)skb_tail_pointer(skb) - sizeof(*ev)) {
+			bt_dev_err(hdev, "Malicious advertising data.");
+			break;
+		}
+
 		if (ev->length <= HCI_MAX_AD_LENGTH &&
 		    ev->data + ev->length <= skb_tail_pointer(skb)) {
 			rssi = ev->data[ev->length];
@@ -5672,11 +5677,6 @@ static void hci_le_adv_report_evt(struct
 		}
 
 		ptr += sizeof(*ev) + ev->length + 1;
-
-		if (ptr > (void *) skb_tail_pointer(skb) - sizeof(*ev)) {
-			bt_dev_err(hdev, "Malicious advertising data. Stopping processing");
-			break;
-		}
 	}
 
 	hci_dev_unlock(hdev);

[PATCH 5.10 002/100] media: venus: core: Drop second v4l2 device unregister

[Greg Kroah-Hartman]

From: Stanimir Varbanov <stanimir.varbanov@linaro.org>

commit ddbcd0c58a6a53e2f1600b9de0ce6a20667c031c upstream.

Wrong solution of rebase conflict leads to calling twice
v4l2_device_unregister in .venus_remove. Delete the second one.

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Cc: Martin Faltesek <mfaltesek@google.com>
Cc: Guenter Roeck <groeck@google.com>
Cc: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/media/platform/qcom/venus/core.c |    2 --
 1 file changed, 2 deletions(-)

--- a/drivers/media/platform/qcom/venus/core.c
+++ b/drivers/media/platform/qcom/venus/core.c
@@ -375,8 +375,6 @@ static int venus_remove(struct platform_
 
 	hfi_destroy(core);
 
-	v4l2_device_unregister(&core->v4l2_dev);
-
 	mutex_destroy(&core->pm_lock);
 	mutex_destroy(&core->lock);
 	venus_dbgfs_deinit(core);

[PATCH 5.10 003/100] net: sfp: ignore disabled SFP node

[Greg Kroah-Hartman]

From: Marek Behún <kabel@kernel.org>

commit 2148927e6ed43a1667baf7c2ae3e0e05a44b51a0 upstream.

Commit ce0aa27ff3f6 ("sfp: add sfp-bus to bridge between network devices
and sfp cages") added code which finds SFP bus DT node even if the node
is disabled with status = "disabled". Because of this, when phylink is
created, it ends with non-null .sfp_bus member, even though the SFP
module is not probed (because the node is disabled).

We need to ignore disabled SFP bus node.

Fixes: ce0aa27ff3f6 ("sfp: add sfp-bus to bridge between network devices and sfp cages")
Signed-off-by: Marek Behún <kabel@kernel.org>
Cc: stable@vger.kernel.org # 2203cbf2c8b5 ("net: sfp: move fwnode parsing into sfp-bus layer")
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/phy/sfp-bus.c |    5 +++++
 1 file changed, 5 insertions(+)

--- a/drivers/net/phy/sfp-bus.c
+++ b/drivers/net/phy/sfp-bus.c
@@ -609,6 +609,11 @@ struct sfp_bus *sfp_bus_find_fwnode(stru
 	else if (ret < 0)
 		return ERR_PTR(ret);
 
+	if (!fwnode_device_is_available(ref.fwnode)) {
+		fwnode_handle_put(ref.fwnode);
+		return NULL;
+	}
+
 	bus = sfp_bus_get(ref.fwnode);
 	fwnode_handle_put(ref.fwnode);
 	if (!bus)

[PATCH 5.10 004/100] net: stmmac: skip only stmmac_ptp_register when resume from suspend

[Greg Kroah-Hartman]

From: Mohammad Athari Bin Ismail <mohammad.athari.ismail@intel.com>

commit 0735e639f129dff455aeb91da291f5c578cc33db upstream.

When resume from suspend, besides skipping PTP registration, it also
skipping PTP HW initialization. This could cause PTP clock not able to
operate properly when resume from suspend.

To fix this, only stmmac_ptp_register() is skipped when resume from
suspend.

Fixes: fe1319291150 ("stmmac: Don't init ptp again when resume from suspend/hibernation")
Cc: <stable@vger.kernel.org> # 5.15.x
Signed-off-by: Mohammad Athari Bin Ismail <mohammad.athari.ismail@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c |   20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -816,8 +816,6 @@ static int stmmac_init_ptp(struct stmmac
 	priv->hwts_tx_en = 0;
 	priv->hwts_rx_en = 0;
 
-	stmmac_ptp_register(priv);
-
 	return 0;
 }
 
@@ -2691,7 +2689,7 @@ static void stmmac_safety_feat_configura
 /**
  * stmmac_hw_setup - setup mac in a usable state.
  *  @dev : pointer to the device structure.
- *  @init_ptp: initialize PTP if set
+ *  @ptp_register: register PTP if set
  *  Description:
  *  this is the main function to setup the HW in a usable state because the
  *  dma engine is reset, the core registers are configured (e.g. AXI,
@@ -2701,7 +2699,7 @@ static void stmmac_safety_feat_configura
  *  0 on success and an appropriate (-)ve integer as defined in errno.h
  *  file on failure.
  */
-static int stmmac_hw_setup(struct net_device *dev, bool init_ptp)
+static int stmmac_hw_setup(struct net_device *dev, bool ptp_register)
 {
 	struct stmmac_priv *priv = netdev_priv(dev);
 	u32 rx_cnt = priv->plat->rx_queues_to_use;
@@ -2757,13 +2755,13 @@ static int stmmac_hw_setup(struct net_de
 
 	stmmac_mmc_setup(priv);
 
-	if (init_ptp) {
-		ret = stmmac_init_ptp(priv);
-		if (ret == -EOPNOTSUPP)
-			netdev_warn(priv->dev, "PTP not supported by HW\n");
-		else if (ret)
-			netdev_warn(priv->dev, "PTP init failed\n");
-	}
+	ret = stmmac_init_ptp(priv);
+	if (ret == -EOPNOTSUPP)
+		netdev_warn(priv->dev, "PTP not supported by HW\n");
+	else if (ret)
+		netdev_warn(priv->dev, "PTP init failed\n");
+	else if (ptp_register)
+		stmmac_ptp_register(priv);
 
 	priv->eee_tw_timer = STMMAC_DEFAULT_TWT_LS;
 

[PATCH 5.10 005/100] s390/module: fix loading modules with a lot of relocations

[Greg Kroah-Hartman]

From: Ilya Leoshkevich <iii@linux.ibm.com>

commit f3b7e73b2c6619884351a3a0a7468642f852b8a2 upstream.

If the size of the PLT entries generated by apply_rela() exceeds
64KiB, the first ones can no longer reach __jump_r1 with brc. Fix by
using brcl. An alternative solution is to add a __jump_r1 copy after
every 64KiB, however, the space savings are quite small and do not
justify the additional complexity.

Fixes: f19fbd5ed642 ("s390: introduce execute-trampolines for branches")
Cc: stable@vger.kernel.org
Reported-by: Andrea Righi <andrea.righi@canonical.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/s390/kernel/module.c |   37 ++++++++++++++++++-------------------
 1 file changed, 18 insertions(+), 19 deletions(-)

--- a/arch/s390/kernel/module.c
+++ b/arch/s390/kernel/module.c
@@ -30,7 +30,7 @@
 #define DEBUGP(fmt , ...)
 #endif
 
-#define PLT_ENTRY_SIZE 20
+#define PLT_ENTRY_SIZE 22
 
 void *module_alloc(unsigned long size)
 {
@@ -330,27 +330,26 @@ static int apply_rela(Elf_Rela *rela, El
 	case R_390_PLTOFF32:	/* 32 bit offset from GOT to PLT. */
 	case R_390_PLTOFF64:	/* 16 bit offset from GOT to PLT. */
 		if (info->plt_initialized == 0) {
-			unsigned int insn[5];
-			unsigned int *ip = me->core_layout.base +
-					   me->arch.plt_offset +
-					   info->plt_offset;
-
-			insn[0] = 0x0d10e310;	/* basr 1,0  */
-			insn[1] = 0x100a0004;	/* lg	1,10(1) */
+			unsigned char insn[PLT_ENTRY_SIZE];
+			char *plt_base;
+			char *ip;
+
+			plt_base = me->core_layout.base + me->arch.plt_offset;
+			ip = plt_base + info->plt_offset;
+			*(int *)insn = 0x0d10e310;	/* basr 1,0  */
+			*(int *)&insn[4] = 0x100c0004;	/* lg	1,12(1) */
 			if (IS_ENABLED(CONFIG_EXPOLINE) && !nospec_disable) {
-				unsigned int *ij;
-				ij = me->core_layout.base +
-					me->arch.plt_offset +
-					me->arch.plt_size - PLT_ENTRY_SIZE;
-				insn[2] = 0xa7f40000 +	/* j __jump_r1 */
-					(unsigned int)(u16)
-					(((unsigned long) ij - 8 -
-					  (unsigned long) ip) / 2);
+				char *jump_r1;
+
+				jump_r1 = plt_base + me->arch.plt_size -
+					PLT_ENTRY_SIZE;
+				/* brcl	0xf,__jump_r1 */
+				*(short *)&insn[8] = 0xc0f4;
+				*(int *)&insn[10] = (jump_r1 - (ip + 8)) / 2;
 			} else {
-				insn[2] = 0x07f10000;	/* br %r1 */
+				*(int *)&insn[8] = 0x07f10000;	/* br %r1 */
 			}
-			insn[3] = (unsigned int) (val >> 32);
-			insn[4] = (unsigned int) val;
+			*(long *)&insn[14] = val;
 
 			write(ip, insn, sizeof(insn));
 			info->plt_initialized = 1;

[PATCH 5.10 006/100] s390/hypfs: include z/VM guests with access control group set

[Greg Kroah-Hartman]

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

commit 663d34c8df98740f1e90241e78e456d00b3c6cad upstream.

Currently if z/VM guest is allowed to retrieve hypervisor performance
data globally for all guests (privilege class B) the query is formed in a
way to include all guests but the group name is left empty. This leads to
that z/VM guests which have access control group set not being included
in the results (even local vm).

Change the query group identifier from empty to "any" to retrieve
information about all guests from any groups (or without a group set).

Cc: stable@vger.kernel.org
Fixes: 31cb4bd31a48 ("[S390] Hypervisor filesystem (s390_hypfs) for z/VM")
Reviewed-by: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/s390/hypfs/hypfs_vm.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/arch/s390/hypfs/hypfs_vm.c
+++ b/arch/s390/hypfs/hypfs_vm.c
@@ -20,6 +20,7 @@
 
 static char local_guest[] = "        ";
 static char all_guests[] = "*       ";
+static char *all_groups = all_guests;
 static char *guest_query;
 
 struct diag2fc_data {
@@ -62,10 +63,11 @@ static int diag2fc(int size, char* query
 
 	memcpy(parm_list.userid, query, NAME_LEN);
 	ASCEBC(parm_list.userid, NAME_LEN);
-	parm_list.addr = (unsigned long) addr ;
+	memcpy(parm_list.aci_grp, all_groups, NAME_LEN);
+	ASCEBC(parm_list.aci_grp, NAME_LEN);
+	parm_list.addr = (unsigned long)addr;
 	parm_list.size = size;
 	parm_list.fmt = 0x02;
-	memset(parm_list.aci_grp, 0x40, NAME_LEN);
 	rc = -1;
 
 	diag_stat_inc(DIAG_STAT_X2FC);

[PATCH 5.10 007/100] bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack()

[Greg Kroah-Hartman]

From: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>

commit b992f01e66150fc5e90be4a96f5eb8e634c8249e upstream.

task_pt_regs() can return NULL on powerpc for kernel threads. This is
then used in __bpf_get_stack() to check for user mode, resulting in a
kernel oops. Guard against this by checking return value of
task_pt_regs() before trying to obtain the call chain.

Fixes: fa28dcb82a38f8 ("bpf: Introduce helper bpf_get_task_stack()")
Cc: stable@vger.kernel.org # v5.9+
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/d5ef83c361cc255494afd15ff1b4fb02a36e1dcf.1641468127.git.naveen.n.rao@linux.vnet.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 kernel/bpf/stackmap.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/kernel/bpf/stackmap.c
+++ b/kernel/bpf/stackmap.c
@@ -664,13 +664,14 @@ BPF_CALL_4(bpf_get_task_stack, struct ta
 	   u32, size, u64, flags)
 {
 	struct pt_regs *regs;
-	long res;
+	long res = -EINVAL;
 
 	if (!try_get_task_stack(task))
 		return -EFAULT;
 
 	regs = task_pt_regs(task);
-	res = __bpf_get_stack(regs, task, NULL, buf, size, flags);
+	if (regs)
+		res = __bpf_get_stack(regs, task, NULL, buf, size, flags);
 	put_task_stack(task);
 
 	return res;

[PATCH 5.10 008/100] scsi: zfcp: Fix failed recovery on gone remote port with non-NPIV FCP devices

[Greg Kroah-Hartman]

From: Steffen Maier <maier@linux.ibm.com>

commit 8c9db6679be4348b8aae108e11d4be2f83976e30 upstream.

Suppose we have an environment with a number of non-NPIV FCP devices
(virtual HBAs / FCP devices / zfcp "adapter"s) sharing the same physical
FCP channel (HBA port) and its I_T nexus. Plus a number of storage target
ports zoned to such shared channel. Now one target port logs out of the
fabric causing an RSCN. Zfcp reacts with an ADISC ELS and subsequent port
recovery depending on the ADISC result. This happens on all such FCP
devices (in different Linux images) concurrently as they all receive a copy
of this RSCN. In the following we look at one of those FCP devices.

Requests other than FSF_QTCB_FCP_CMND can be slow until they get a
response.

Depending on which requests are affected by slow responses, there are
different recovery outcomes. Here we want to fix failed recoveries on port
or adapter level by avoiding recovery requests that can be slow.

We need the cached N_Port_ID for the remote port "link" test with ADISC.
Just before sending the ADISC, we now intentionally forget the old cached
N_Port_ID. The idea is that on receiving an RSCN for a port, we have to
assume that any cached information about this port is stale.  This forces a
fresh new GID_PN [FC-GS] nameserver lookup on any subsequent recovery for
the same port. Since we typically can still communicate with the nameserver
efficiently, we now reach steady state quicker: Either the nameserver still
does not know about the port so we stop recovery, or the nameserver already
knows the port potentially with a new N_Port_ID and we can successfully and
quickly perform open port recovery.  For the one case, where ADISC returns
successfully, we re-initialize port->d_id because that case does not
involve any port recovery.

This also solves a problem if the storage WWPN quickly logs into the fabric
again but with a different N_Port_ID. Such as on virtual WWPN takeover
during target NPIV failover.
[https://www.redbooks.ibm.com/abstracts/redp5477.html] In that case the
RSCN from the storage FDISC was ignored by zfcp and we could not
successfully recover the failover. On some later failback on the storage,
we could have been lucky if the virtual WWPN got the same old N_Port_ID
from the SAN switch as we still had cached.  Then the related RSCN
triggered a successful port reopen recovery.  However, there is no
guarantee to get the same N_Port_ID on NPIV FDISC.

Even though NPIV-enabled FCP devices are not affected by this problem, this
code change optimizes recovery time for gone remote ports as a side effect.
The timely drop of cached N_Port_IDs prevents unnecessary slow open port
attempts.

While the problem might have been in code before v2.6.32 commit
799b76d09aee ("[SCSI] zfcp: Decouple gid_pn requests from erp") this fix
depends on the gid_pn_work introduced with that commit, so we mark it as
culprit to satisfy fix dependencies.

Note: Point-to-point remote port is already handled separately and gets its
N_Port_ID from the cached peer_d_id. So resetting port->d_id in general
does not affect PtP.

Link: https://lore.kernel.org/r/20220118165803.3667947-1-maier@linux.ibm.com
Fixes: 799b76d09aee ("[SCSI] zfcp: Decouple gid_pn requests from erp")
Cc: <stable@vger.kernel.org> #2.6.32+
Suggested-by: Benjamin Block <bblock@linux.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Steffen Maier <maier@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/s390/scsi/zfcp_fc.c |   13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

--- a/drivers/s390/scsi/zfcp_fc.c
+++ b/drivers/s390/scsi/zfcp_fc.c
@@ -521,6 +521,8 @@ static void zfcp_fc_adisc_handler(void *
 		goto out;
 	}
 
+	/* re-init to undo drop from zfcp_fc_adisc() */
+	port->d_id = ntoh24(adisc_resp->adisc_port_id);
 	/* port is good, unblock rport without going through erp */
 	zfcp_scsi_schedule_rport_register(port);
  out:
@@ -534,6 +536,7 @@ static int zfcp_fc_adisc(struct zfcp_por
 	struct zfcp_fc_req *fc_req;
 	struct zfcp_adapter *adapter = port->adapter;
 	struct Scsi_Host *shost = adapter->scsi_host;
+	u32 d_id;
 	int ret;
 
 	fc_req = kmem_cache_zalloc(zfcp_fc_req_cache, GFP_ATOMIC);
@@ -558,7 +561,15 @@ static int zfcp_fc_adisc(struct zfcp_por
 	fc_req->u.adisc.req.adisc_cmd = ELS_ADISC;
 	hton24(fc_req->u.adisc.req.adisc_port_id, fc_host_port_id(shost));
 
-	ret = zfcp_fsf_send_els(adapter, port->d_id, &fc_req->ct_els,
+	d_id = port->d_id; /* remember as destination for send els below */
+	/*
+	 * Force fresh GID_PN lookup on next port recovery.
+	 * Must happen after request setup and before sending request,
+	 * to prevent race with port->d_id re-init in zfcp_fc_adisc_handler().
+	 */
+	port->d_id = 0;
+
+	ret = zfcp_fsf_send_els(adapter, d_id, &fc_req->ct_els,
 				ZFCP_FC_CTELS_TMO);
 	if (ret)
 		kmem_cache_free(zfcp_fc_req_cache, fc_req);

[PATCH 5.10 009/100] udf: Restore i_lenAlloc when inode expansion fails

[Greg Kroah-Hartman]

From: Jan Kara <jack@suse.cz>

commit ea8569194b43f0f01f0a84c689388542c7254a1f upstream.

When we fail to expand inode from inline format to a normal format, we
restore inode to contain the original inline formatting but we forgot to
set i_lenAlloc back. The mismatch between i_lenAlloc and i_size was then
causing further problems such as warnings and lost data down the line.

Reported-by: butt3rflyh4ck <butterflyhuangxx@gmail.com>
CC: stable@vger.kernel.org
Fixes: 7e49b6f2480c ("udf: Convert UDF to new truncate calling sequence")
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/udf/inode.c |    1 +
 1 file changed, 1 insertion(+)

--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -316,6 +316,7 @@ int udf_expand_file_adinicb(struct inode
 		unlock_page(page);
 		iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB;
 		inode->i_data.a_ops = &udf_adinicb_aops;
+		iinfo->i_lenAlloc = inode->i_size;
 		up_write(&iinfo->i_data_sem);
 	}
 	put_page(page);

[PATCH 5.10 010/100] udf: Fix NULL ptr deref when converting from inline format

[Greg Kroah-Hartman]

From: Jan Kara <jack@suse.cz>

commit 7fc3b7c2981bbd1047916ade327beccb90994eee upstream.

udf_expand_file_adinicb() calls directly ->writepage to write data
expanded into a page. This however misses to setup inode for writeback
properly and so we can crash on inode->i_wb dereference when submitting
page for IO like:

  BUG: kernel NULL pointer dereference, address: 0000000000000158
  #PF: supervisor read access in kernel mode
...
  <TASK>
  __folio_start_writeback+0x2ac/0x350
  __block_write_full_page+0x37d/0x490
  udf_expand_file_adinicb+0x255/0x400 [udf]
  udf_file_write_iter+0xbe/0x1b0 [udf]
  new_sync_write+0x125/0x1c0
  vfs_write+0x28e/0x400

Fix the problem by marking the page dirty and going through the standard
writeback path to write the page. Strictly speaking we would not even
have to write the page but we want to catch e.g. ENOSPC errors early.

Reported-by: butt3rflyh4ck <butterflyhuangxx@gmail.com>
CC: stable@vger.kernel.org
Fixes: 52ebea749aae ("writeback: make backing_dev_info host cgroup-specific bdi_writebacks")
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/udf/inode.c |    8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -257,10 +257,6 @@ int udf_expand_file_adinicb(struct inode
 	char *kaddr;
 	struct udf_inode_info *iinfo = UDF_I(inode);
 	int err;
-	struct writeback_control udf_wbc = {
-		.sync_mode = WB_SYNC_NONE,
-		.nr_to_write = 1,
-	};
 
 	WARN_ON_ONCE(!inode_is_locked(inode));
 	if (!iinfo->i_lenAlloc) {
@@ -304,8 +300,10 @@ int udf_expand_file_adinicb(struct inode
 		iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG;
 	/* from now on we have normal address_space methods */
 	inode->i_data.a_ops = &udf_aops;
+	set_page_dirty(page);
+	unlock_page(page);
 	up_write(&iinfo->i_data_sem);
-	err = inode->i_data.a_ops->writepage(page, &udf_wbc);
+	err = filemap_fdatawrite(inode->i_mapping);
 	if (err) {
 		/* Restore everything back so that we don't lose data... */
 		lock_page(page);

[PATCH 5.10 011/100] efi: runtime: avoid EFIv2 runtime services on Apple x86 machines

[Greg Kroah-Hartman]

From: Ard Biesheuvel <ardb@kernel.org>

commit f5390cd0b43c2e54c7cf5506c7da4a37c5cef746 upstream.

Aditya reports [0] that his recent MacbookPro crashes in the firmware
when using the variable services at runtime. The culprit appears to be a
call to QueryVariableInfo(), which we did not use to call on Apple x86
machines in the past as they only upgraded from EFI v1.10 to EFI v2.40
firmware fairly recently, and QueryVariableInfo() (along with
UpdateCapsule() et al) was added in EFI v2.00.

The only runtime service introduced in EFI v2.00 that we actually use in
Linux is QueryVariableInfo(), as the capsule based ones are optional,
generally not used at runtime (all the LVFS/fwupd firmware update
infrastructure uses helper EFI programs that invoke capsule update at
boot time, not runtime), and not implemented by Apple machines in the
first place. QueryVariableInfo() is used to 'safely' set variables,
i.e., only when there is enough space. This prevents machines with buggy
firmwares from corrupting their NVRAMs when they run out of space.

Given that Apple machines have been using EFI v1.10 services only for
the longest time (the EFI v2.0 spec was released in 2006, and Linux
support for the newly introduced runtime services was added in 2011, but
the MacbookPro12,1 released in 2015 still claims to be EFI v1.10 only),
let's avoid the EFI v2.0 ones on all Apple x86 machines.

[0] https://lore.kernel.org/all/6D757C75-65B1-468B-842D-10410081A8E4@live.com/

Cc: <stable@vger.kernel.org>
Cc: Jeremy Kerr <jk@ozlabs.org>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Reported-by: Aditya Garg <gargaditya08@live.com>
Tested-by: Orlando Chamberlain <redecorating@protonmail.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Aditya Garg <gargaditya08@live.com>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=215277
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/firmware/efi/efi.c |    7 +++++++
 1 file changed, 7 insertions(+)

--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -719,6 +719,13 @@ void __init efi_systab_report_header(con
 		systab_hdr->revision >> 16,
 		systab_hdr->revision & 0xffff,
 		vendor);
+
+	if (IS_ENABLED(CONFIG_X86_64) &&
+	    systab_hdr->revision > EFI_1_10_SYSTEM_TABLE_REVISION &&
+	    !strcmp(vendor, "Apple")) {
+		pr_info("Apple Mac detected, using EFI v1.10 runtime services only\n");
+		efi.runtime_version = EFI_1_10_SYSTEM_TABLE_REVISION;
+	}
 }
 
 static __initdata char memory_type_name[][13] = {

[PATCH 5.10 012/100] PM: wakeup: simplify the output logic of pm_show_wakelocks()

[Greg Kroah-Hartman]

From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

commit c9d967b2ce40d71e968eb839f36c936b8a9cf1ea upstream.

The buffer handling in pm_show_wakelocks() is tricky, and hopefully
correct.  Ensure it really is correct by using sysfs_emit_at() which
handles all of the tricky string handling logic in a PAGE_SIZE buffer
for us automatically as this is a sysfs file being read from.

Reviewed-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 kernel/power/wakelock.c |   11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

--- a/kernel/power/wakelock.c
+++ b/kernel/power/wakelock.c
@@ -39,23 +39,20 @@ ssize_t pm_show_wakelocks(char *buf, boo
 {
 	struct rb_node *node;
 	struct wakelock *wl;
-	char *str = buf;
-	char *end = buf + PAGE_SIZE;
+	int len = 0;
 
 	mutex_lock(&wakelocks_lock);
 
 	for (node = rb_first(&wakelocks_tree); node; node = rb_next(node)) {
 		wl = rb_entry(node, struct wakelock, node);
 		if (wl->ws->active == show_active)
-			str += scnprintf(str, end - str, "%s ", wl->name);
+			len += sysfs_emit_at(buf, len, "%s ", wl->name);
 	}
-	if (str > buf)
-		str--;
 
-	str += scnprintf(str, end - str, "\n");
+	len += sysfs_emit_at(buf, len, "\n");
 
 	mutex_unlock(&wakelocks_lock);
-	return (str - buf);
+	return len;
 }
 
 #if CONFIG_PM_WAKELOCKS_LIMIT > 0

[PATCH 5.10 013/100] tracing/histogram: Fix a potential memory leak for kstrdup()

[Greg Kroah-Hartman]

From: Xiaoke Wang <xkernel.wang@foxmail.com>

commit e629e7b525a179e29d53463d992bdee759c950fb upstream.

kfree() is missing on an error path to free the memory allocated by
kstrdup():

  p = param = kstrdup(data->params[i], GFP_KERNEL);

So it is better to free it via kfree(p).

Link: https://lkml.kernel.org/r/tencent_C52895FD37802832A3E5B272D05008866F0A@qq.com

Cc: stable@vger.kernel.org
Fixes: d380dcde9a07c ("tracing: Fix now invalid var_ref_vals assumption in trace action")
Signed-off-by: Xiaoke Wang <xkernel.wang@foxmail.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 kernel/trace/trace_events_hist.c |    1 +
 1 file changed, 1 insertion(+)

--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -3506,6 +3506,7 @@ static int trace_action_create(struct hi
 
 			var_ref_idx = find_var_ref_idx(hist_data, var_ref);
 			if (WARN_ON(var_ref_idx < 0)) {
+				kfree(p);
 				ret = var_ref_idx;
 				goto err;
 			}

[PATCH 5.10 014/100] tracing: Dont inc err_log entry count if entry allocation fails

[Greg Kroah-Hartman]

From: Tom Zanussi <zanussi@kernel.org>

commit 67ab5eb71b37b55f7c5522d080a1b42823351776 upstream.

tr->n_err_log_entries should only be increased if entry allocation
succeeds.

Doing it when it fails won't cause any problems other than wasting an
entry, but should be fixed anyway.

Link: https://lkml.kernel.org/r/cad1ab28f75968db0f466925e7cba5970cec6c29.1643319703.git.zanussi@kernel.org

Cc: stable@vger.kernel.org
Fixes: 2f754e771b1a6 ("tracing: Don't inc err_log entry count if entry allocation fails")
Signed-off-by: Tom Zanussi <zanussi@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 kernel/trace/trace.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -7257,7 +7257,8 @@ static struct tracing_log_err *get_traci
 		err = kzalloc(sizeof(*err), GFP_KERNEL);
 		if (!err)
 			err = ERR_PTR(-ENOMEM);
-		tr->n_err_log_entries++;
+		else
+			tr->n_err_log_entries++;
 
 		return err;
 	}

[PATCH 5.10 015/100] ceph: properly put ceph_string reference after async create attempt

[Greg Kroah-Hartman]

From: Jeff Layton <jlayton@kernel.org>

commit 932a9b5870d38b87ba0a9923c804b1af7d3605b9 upstream.

The reference acquired by try_prep_async_create is currently leaked.
Ensure we put it.

Cc: stable@vger.kernel.org
Fixes: 9a8d03ca2e2c ("ceph: attempt to do async create when possible")
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/ceph/file.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -743,8 +743,10 @@ retry:
 				restore_deleg_ino(dir, req->r_deleg_ino);
 				ceph_mdsc_put_request(req);
 				try_async = false;
+				ceph_put_string(rcu_dereference_raw(lo.pool_ns));
 				goto retry;
 			}
+			ceph_put_string(rcu_dereference_raw(lo.pool_ns));
 			goto out_req;
 		}
 	}

[PATCH 5.10 016/100] ceph: set pool_ns in new inode layout for async creates

[Greg Kroah-Hartman]

From: Jeff Layton <jlayton@kernel.org>

commit 4584a768f22b7669cdebabc911543621ac661341 upstream.

Dan reported that he was unable to write to files that had been
asynchronously created when the client's OSD caps are restricted to a
particular namespace.

The issue is that the layout for the new inode is only partially being
filled. Ensure that we populate the pool_ns_data and pool_ns_len in the
iinfo before calling ceph_fill_inode.

Cc: stable@vger.kernel.org
URL: https://tracker.ceph.com/issues/54013
Fixes: 9a8d03ca2e2c ("ceph: attempt to do async create when possible")
Reported-by: Dan van der Ster <dan@vanderster.com>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/ceph/file.c |    7 +++++++
 1 file changed, 7 insertions(+)

--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -577,6 +577,7 @@ static int ceph_finish_async_create(stru
 	struct ceph_inode_info *ci = ceph_inode(dir);
 	struct inode *inode;
 	struct timespec64 now;
+	struct ceph_string *pool_ns;
 	struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(dir->i_sb);
 	struct ceph_vino vino = { .ino = req->r_deleg_ino,
 				  .snap = CEPH_NOSNAP };
@@ -626,6 +627,12 @@ static int ceph_finish_async_create(stru
 	in.max_size = cpu_to_le64(lo->stripe_unit);
 
 	ceph_file_layout_to_legacy(lo, &in.layout);
+	/* lo is private, so pool_ns can't change */
+	pool_ns = rcu_dereference_raw(lo->pool_ns);
+	if (pool_ns) {
+		iinfo.pool_ns_len = pool_ns->len;
+		iinfo.pool_ns_data = pool_ns->str;
+	}
 
 	down_read(&mdsc->snap_rwsem);
 	ret = ceph_fill_inode(inode, NULL, &iinfo, NULL, req->r_session,

[PATCH 5.10 017/100] fsnotify: fix fsnotify hooks in pseudo filesystems

[Greg Kroah-Hartman]

From: Amir Goldstein <amir73il@gmail.com>

commit 29044dae2e746949ad4b9cbdbfb248994d1dcdb4 upstream.

Commit 49246466a989 ("fsnotify: move fsnotify_nameremove() hook out of
d_delete()") moved the fsnotify delete hook before d_delete() so fsnotify
will have access to a positive dentry.

This allowed a race where opening the deleted file via cached dentry
is now possible after receiving the IN_DELETE event.

To fix the regression in pseudo filesystems, convert d_delete() calls
to d_drop() (see commit 46c46f8df9aa ("devpts_pty_kill(): don't bother
with d_delete()") and move the fsnotify hook after d_drop().

Add a missing fsnotify_unlink() hook in nfsdfs that was found during
the audit of fsnotify hooks in pseudo filesystems.

Note that the fsnotify hooks in simple_recursive_removal() follow
d_invalidate(), so they require no change.

Link: https://lore.kernel.org/r/20220120215305.282577-2-amir73il@gmail.com
Reported-by: Ivan Delalande <colona@arista.com>
Link: https://lore.kernel.org/linux-fsdevel/YeNyzoDM5hP5LtGW@visor/
Fixes: 49246466a989 ("fsnotify: move fsnotify_nameremove() hook out of d_delete()")
Cc: stable@vger.kernel.org # v5.3+
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/configfs/dir.c     |    6 +++---
 fs/devpts/inode.c     |    2 +-
 fs/nfsd/nfsctl.c      |    5 +++--
 net/sunrpc/rpc_pipe.c |    4 ++--
 4 files changed, 9 insertions(+), 8 deletions(-)

--- a/fs/configfs/dir.c
+++ b/fs/configfs/dir.c
@@ -1805,8 +1805,8 @@ void configfs_unregister_group(struct co
 	configfs_detach_group(&group->cg_item);
 	d_inode(dentry)->i_flags |= S_DEAD;
 	dont_mount(dentry);
+	d_drop(dentry);
 	fsnotify_rmdir(d_inode(parent), dentry);
-	d_delete(dentry);
 	inode_unlock(d_inode(parent));
 
 	dput(dentry);
@@ -1947,10 +1947,10 @@ void configfs_unregister_subsystem(struc
 	configfs_detach_group(&group->cg_item);
 	d_inode(dentry)->i_flags |= S_DEAD;
 	dont_mount(dentry);
-	fsnotify_rmdir(d_inode(root), dentry);
 	inode_unlock(d_inode(dentry));
 
-	d_delete(dentry);
+	d_drop(dentry);
+	fsnotify_rmdir(d_inode(root), dentry);
 
 	inode_unlock(d_inode(root));
 
--- a/fs/devpts/inode.c
+++ b/fs/devpts/inode.c
@@ -621,8 +621,8 @@ void devpts_pty_kill(struct dentry *dent
 
 	dentry->d_fsdata = NULL;
 	drop_nlink(dentry->d_inode);
-	fsnotify_unlink(d_inode(dentry->d_parent), dentry);
 	d_drop(dentry);
+	fsnotify_unlink(d_inode(dentry->d_parent), dentry);
 	dput(dentry);	/* d_alloc_name() in devpts_pty_new() */
 }
 
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -1247,7 +1247,8 @@ static void nfsdfs_remove_file(struct in
 	clear_ncl(d_inode(dentry));
 	dget(dentry);
 	ret = simple_unlink(dir, dentry);
-	d_delete(dentry);
+	d_drop(dentry);
+	fsnotify_unlink(dir, dentry);
 	dput(dentry);
 	WARN_ON_ONCE(ret);
 }
@@ -1336,8 +1337,8 @@ void nfsd_client_rmdir(struct dentry *de
 	dget(dentry);
 	ret = simple_rmdir(dir, dentry);
 	WARN_ON_ONCE(ret);
+	d_drop(dentry);
 	fsnotify_rmdir(dir, dentry);
-	d_delete(dentry);
 	dput(dentry);
 	inode_unlock(dir);
 }
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -599,9 +599,9 @@ static int __rpc_rmdir(struct inode *dir
 
 	dget(dentry);
 	ret = simple_rmdir(dir, dentry);
+	d_drop(dentry);
 	if (!ret)
 		fsnotify_rmdir(dir, dentry);
-	d_delete(dentry);
 	dput(dentry);
 	return ret;
 }
@@ -612,9 +612,9 @@ static int __rpc_unlink(struct inode *di
 
 	dget(dentry);
 	ret = simple_unlink(dir, dentry);
+	d_drop(dentry);
 	if (!ret)
 		fsnotify_unlink(dir, dentry);
-	d_delete(dentry);
 	dput(dentry);
 	return ret;
 }

[PATCH 5.10 018/100] Revert "KVM: SVM: avoid infinite loop on NPF from bad address"

[Greg Kroah-Hartman]

From: Sean Christopherson <seanjc@google.com>

commit 31c25585695abdf03d6160aa6d829e855b256329 upstream.

Revert a completely broken check on an "invalid" RIP in SVM's workaround
for the DecodeAssists SMAP errata.  kvm_vcpu_gfn_to_memslot() obviously
expects a gfn, i.e. operates in the guest physical address space, whereas
RIP is a virtual (not even linear) address.  The "fix" worked for the
problematic KVM selftest because the test identity mapped RIP.

Fully revert the hack instead of trying to translate RIP to a GPA, as the
non-SEV case is now handled earlier, and KVM cannot access guest page
tables to translate RIP.

This reverts commit e72436bc3a5206f95bb384e741154166ddb3202e.

Fixes: e72436bc3a52 ("KVM: SVM: avoid infinite loop on NPF from bad address")
Reported-by: Liam Merwick <liam.merwick@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Message-Id: <20220120010719.711476-3-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/x86/kvm/svm/svm.c |    7 -------
 virt/kvm/kvm_main.c    |    1 -
 2 files changed, 8 deletions(-)

--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -4146,13 +4146,6 @@ static bool svm_can_emulate_instruction(
 	if (likely(!insn || insn_len))
 		return true;
 
-	/*
-	 * If RIP is invalid, go ahead with emulation which will cause an
-	 * internal error exit.
-	 */
-	if (!kvm_vcpu_gfn_to_memslot(vcpu, kvm_rip_read(vcpu) >> PAGE_SHIFT))
-		return true;
-
 	cr4 = kvm_read_cr4(vcpu);
 	smep = cr4 & X86_CR4_SMEP;
 	smap = cr4 & X86_CR4_SMAP;
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1691,7 +1691,6 @@ struct kvm_memory_slot *kvm_vcpu_gfn_to_
 {
 	return __gfn_to_memslot(kvm_vcpu_memslots(vcpu), gfn);
 }
-EXPORT_SYMBOL_GPL(kvm_vcpu_gfn_to_memslot);
 
 bool kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn)
 {

[PATCH 5.10 019/100] perf/x86/intel/uncore: Fix CAS_COUNT_WRITE issue for ICX

[Greg Kroah-Hartman]

From: Zhengjun Xing <zhengjun.xing@linux.intel.com>

commit 96fd2e89fba1aaada6f4b1e5d25a9d9ecbe1943d upstream.

The user recently report a perf issue in the ICX platform, when test by
perf event “uncore_imc_x/cas_count_write”,the write bandwidth is always
very small (only 0.38MB/s), it is caused by the wrong "umask" for the
"cas_count_write" event. When double-checking, find "cas_count_read"
also is wrong.

The public document for ICX uncore:

3rd Gen Intel® Xeon® Processor Scalable Family, Codename Ice Lake,Uncore
Performance Monitoring Reference Manual, Revision 1.00, May 2021

On 2.4.7, it defines Unit Masks for CAS_COUNT:
RD b00001111
WR b00110000

So corrected both "cas_count_read" and "cas_count_write" for ICX.

Old settings:
 hswep_uncore_imc_events
	INTEL_UNCORE_EVENT_DESC(cas_count_read,  "event=0x04,umask=0x03")
	INTEL_UNCORE_EVENT_DESC(cas_count_write, "event=0x04,umask=0x0c")

New settings:
 snr_uncore_imc_events
	INTEL_UNCORE_EVENT_DESC(cas_count_read,  "event=0x04,umask=0x0f")
	INTEL_UNCORE_EVENT_DESC(cas_count_write, "event=0x04,umask=0x30")

Fixes: 2b3b76b5ec67 ("perf/x86/intel/uncore: Add Ice Lake server uncore support")
Signed-off-by: Zhengjun Xing <zhengjun.xing@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20211223144826.841267-1-zhengjun.xing@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/x86/events/intel/uncore_snbep.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/events/intel/uncore_snbep.c
+++ b/arch/x86/events/intel/uncore_snbep.c
@@ -5239,7 +5239,7 @@ static struct intel_uncore_type icx_unco
 	.fixed_ctr_bits	= 48,
 	.fixed_ctr	= SNR_IMC_MMIO_PMON_FIXED_CTR,
 	.fixed_ctl	= SNR_IMC_MMIO_PMON_FIXED_CTL,
-	.event_descs	= hswep_uncore_imc_events,
+	.event_descs	= snr_uncore_imc_events,
 	.perf_ctr	= SNR_IMC_MMIO_PMON_CTR0,
 	.event_ctl	= SNR_IMC_MMIO_PMON_CTL0,
 	.event_mask	= SNBEP_PMON_RAW_EVENT_MASK,

[PATCH 5.10 020/100] drm/etnaviv: relax submit size limits

[Greg Kroah-Hartman]

From: Lucas Stach <l.stach@pengutronix.de>

commit e3d26528e083e612314d4dcd713f3d5a26143ddc upstream.

While all userspace tried to limit commandstreams to 64K in size,
a bug in the Mesa driver lead to command streams of up to 128K
being submitted. Allow those to avoid breaking existing userspace.

Fixes: 6dfa2fab8ddd ("drm/etnaviv: limit submit sizes")
Cc: stable@vger.kernel.org
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
@@ -469,8 +469,8 @@ int etnaviv_ioctl_gem_submit(struct drm_
 		return -EINVAL;
 	}
 
-	if (args->stream_size > SZ_64K || args->nr_relocs > SZ_64K ||
-	    args->nr_bos > SZ_64K || args->nr_pmrs > 128) {
+	if (args->stream_size > SZ_128K || args->nr_relocs > SZ_128K ||
+	    args->nr_bos > SZ_128K || args->nr_pmrs > 128) {
 		DRM_ERROR("submit arguments out of size limits\n");
 		return -EINVAL;
 	}

[PATCH 5.10 021/100] KVM: x86: Update vCPUs runtime CPUID on write to MSR_IA32_XSS

[Greg Kroah-Hartman]

From: Like Xu <likexu@tencent.com>

commit 4c282e51e4450b94680d6ca3b10f830483b1f243 upstream.

Do a runtime CPUID update for a vCPU if MSR_IA32_XSS is written, as the
size in bytes of the XSAVE area is affected by the states enabled in XSS.

Fixes: 203000993de5 ("kvm: vmx: add MSR logic for XSAVES")
Cc: stable@vger.kernel.org
Signed-off-by: Like Xu <likexu@tencent.com>
[sean: split out as a separate patch, adjust Fixes tag]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220126172226.2298529-3-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/x86/kvm/x86.c |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3171,6 +3171,7 @@ int kvm_set_msr_common(struct kvm_vcpu *
 		if (data & ~supported_xss)
 			return 1;
 		vcpu->arch.ia32_xss = data;
+		kvm_update_cpuid_runtime(vcpu);
 		break;
 	case MSR_SMI_COUNT:
 		if (!msr_info->host_initiated)

[PATCH 5.10 022/100] arm64: errata: Fix exec handling in erratum 1418040 workaround

[Greg Kroah-Hartman]

From: D Scott Phillips <scott@os.amperecomputing.com>

commit 38e0257e0e6f4fef2aa2966b089b56a8b1cfb75c upstream.

The erratum 1418040 workaround enables CNTVCT_EL1 access trapping in EL0
when executing compat threads. The workaround is applied when switching
between tasks, but the need for the workaround could also change at an
exec(), when a non-compat task execs a compat binary or vice versa. Apply
the workaround in arch_setup_new_exec().

This leaves a small window of time between SET_PERSONALITY and
arch_setup_new_exec where preemption could occur and confuse the old
workaround logic that compares TIF_32BIT between prev and next. Instead, we
can just read cntkctl to make sure it's in the state that the next task
needs. I measured cntkctl read time to be about the same as a mov from a
general-purpose register on N1. Update the workaround logic to examine the
current value of cntkctl instead of the previous task's compat state.

Fixes: d49f7d7376d0 ("arm64: Move handling of erratum 1418040 into C code")
Cc: <stable@vger.kernel.org> # 5.9.x
Signed-off-by: D Scott Phillips <scott@os.amperecomputing.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211220234114.3926-1-scott@os.amperecomputing.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm64/kernel/process.c |   39 ++++++++++++++++-----------------------
 1 file changed, 16 insertions(+), 23 deletions(-)

--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c
@@ -511,34 +511,26 @@ static void entry_task_switch(struct tas
 
 /*
  * ARM erratum 1418040 handling, affecting the 32bit view of CNTVCT.
- * Assuming the virtual counter is enabled at the beginning of times:
- *
- * - disable access when switching from a 64bit task to a 32bit task
- * - enable access when switching from a 32bit task to a 64bit task
+ * Ensure access is disabled when switching to a 32bit task, ensure
+ * access is enabled when switching to a 64bit task.
  */
-static void erratum_1418040_thread_switch(struct task_struct *prev,
-					  struct task_struct *next)
+static void erratum_1418040_thread_switch(struct task_struct *next)
 {
-	bool prev32, next32;
-	u64 val;
-
-	if (!IS_ENABLED(CONFIG_ARM64_ERRATUM_1418040))
-		return;
-
-	prev32 = is_compat_thread(task_thread_info(prev));
-	next32 = is_compat_thread(task_thread_info(next));
-
-	if (prev32 == next32 || !this_cpu_has_cap(ARM64_WORKAROUND_1418040))
+	if (!IS_ENABLED(CONFIG_ARM64_ERRATUM_1418040) ||
+	    !this_cpu_has_cap(ARM64_WORKAROUND_1418040))
 		return;
 
-	val = read_sysreg(cntkctl_el1);
-
-	if (!next32)
-		val |= ARCH_TIMER_USR_VCT_ACCESS_EN;
+	if (is_compat_thread(task_thread_info(next)))
+		sysreg_clear_set(cntkctl_el1, ARCH_TIMER_USR_VCT_ACCESS_EN, 0);
 	else
-		val &= ~ARCH_TIMER_USR_VCT_ACCESS_EN;
+		sysreg_clear_set(cntkctl_el1, 0, ARCH_TIMER_USR_VCT_ACCESS_EN);
+}
 
-	write_sysreg(val, cntkctl_el1);
+static void erratum_1418040_new_exec(void)
+{
+	preempt_disable();
+	erratum_1418040_thread_switch(current);
+	preempt_enable();
 }
 
 /*
@@ -556,7 +548,7 @@ __notrace_funcgraph struct task_struct *
 	entry_task_switch(next);
 	uao_thread_switch(next);
 	ssbs_thread_switch(next);
-	erratum_1418040_thread_switch(prev, next);
+	erratum_1418040_thread_switch(next);
 
 	/*
 	 * Complete any pending TLB or cache maintenance on this CPU in case
@@ -622,6 +614,7 @@ void arch_setup_new_exec(void)
 	current->mm->context.flags = is_compat_task() ? MMCF_AARCH32 : 0;
 
 	ptrauth_thread_init_user(current);
+	erratum_1418040_new_exec();
 
 	if (task_spec_ssb_noexec(current)) {
 		arch_prctl_spec_ctrl_set(current, PR_SPEC_STORE_BYPASS,

[PATCH 5.10 023/100] netfilter: nft_payload: do not update layer 4 checksum when mangling fragments

[Greg Kroah-Hartman]

From: Pablo Neira Ayuso <pablo@netfilter.org>

commit 4e1860a3863707e8177329c006d10f9e37e097a8 upstream.

IP fragments do not come with the transport header, hence skip bogus
layer 4 checksum updates.

Fixes: 1814096980bb ("netfilter: nft_payload: layer 4 checksum adjustment for pseudoheader fields")
Reported-and-tested-by: Steffen Weinreich <steve@weinreich.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/netfilter/nft_payload.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/net/netfilter/nft_payload.c
+++ b/net/netfilter/nft_payload.c
@@ -502,6 +502,9 @@ static int nft_payload_l4csum_offset(con
 				     struct sk_buff *skb,
 				     unsigned int *l4csum_offset)
 {
+	if (pkt->xt.fragoff)
+		return -1;
+
 	switch (pkt->tprot) {
 	case IPPROTO_TCP:
 		*l4csum_offset = offsetof(struct tcphdr, check);

[PATCH 5.10 024/100] serial: 8250: of: Fix mapped region size when using reg-offset property

[Greg Kroah-Hartman]

From: Robert Hancock <robert.hancock@calian.com>

commit d06b1cf28297e27127d3da54753a3a01a2fa2f28 upstream.

8250_of supports a reg-offset property which is intended to handle
cases where the device registers start at an offset inside the region
of memory allocated to the device. The Xilinx 16550 UART, for which this
support was initially added, requires this. However, the code did not
adjust the overall size of the mapped region accordingly, causing the
driver to request an area of memory past the end of the device's
allocation. For example, if the UART was allocated an address of
0xb0130000, size of 0x10000 and reg-offset of 0x1000 in the device
tree, the region of memory reserved was b0131000-b0140fff, which caused
the driver for the region starting at b0140000 to fail to probe.

Fix this by subtracting reg-offset from the mapped region size.

Fixes: b912b5e2cfb3 ([POWERPC] Xilinx: of_serial support for Xilinx uart 16550.)
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Link: https://lore.kernel.org/r/20220112194214.881844-1-robert.hancock@calian.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/serial/8250/8250_of.c |   11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

--- a/drivers/tty/serial/8250/8250_of.c
+++ b/drivers/tty/serial/8250/8250_of.c
@@ -83,8 +83,17 @@ static int of_platform_serial_setup(stru
 		port->mapsize = resource_size(&resource);
 
 		/* Check for shifted address mapping */
-		if (of_property_read_u32(np, "reg-offset", &prop) == 0)
+		if (of_property_read_u32(np, "reg-offset", &prop) == 0) {
+			if (prop >= port->mapsize) {
+				dev_warn(&ofdev->dev, "reg-offset %u exceeds region size %pa\n",
+					 prop, &port->mapsize);
+				ret = -EINVAL;
+				goto err_unprepare;
+			}
+
 			port->mapbase += prop;
+			port->mapsize -= prop;
+		}
 
 		port->iotype = UPIO_MEM;
 		if (of_property_read_u32(np, "reg-io-width", &prop) == 0) {

[PATCH 5.10 025/100] serial: stm32: fix software flow control transfer

[Greg Kroah-Hartman]

From: Valentin Caron <valentin.caron@foss.st.com>

commit 037b91ec7729524107982e36ec4b40f9b174f7a2 upstream.

x_char is ignored by stm32_usart_start_tx() when xmit buffer is empty.

Fix start_tx condition to allow x_char to be sent.

Fixes: 48a6092fb41f ("serial: stm32-usart: Add STM32 USART Driver")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Erwan Le Ray <erwan.leray@foss.st.com>
Signed-off-by: Valentin Caron <valentin.caron@foss.st.com>
Link: https://lore.kernel.org/r/20220111164441.6178-3-valentin.caron@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/serial/stm32-usart.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c
@@ -574,7 +574,7 @@ static void stm32_usart_start_tx(struct
 	struct serial_rs485 *rs485conf = &port->rs485;
 	struct circ_buf *xmit = &port->state->xmit;
 
-	if (uart_circ_empty(xmit))
+	if (uart_circ_empty(xmit) && !port->x_char)
 		return;
 
 	if (rs485conf->flags & SER_RS485_ENABLED) {

[PATCH 5.10 026/100] tty: n_gsm: fix SW flow control encoding/handling

[Greg Kroah-Hartman]

From: daniel.starke@siemens.com <daniel.starke@siemens.com>

commit 8838b2af23caf1ff0610caef2795d6668a013b2d upstream.

n_gsm is based on the 3GPP 07.010 and its newer version is the 3GPP 27.010.
See https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=1516
The changes from 07.010 to 27.010 are non-functional. Therefore, I refer to
the newer 27.010 here. Chapter 5.2.7.3 states that DC1 (XON) and DC3 (XOFF)
are the control characters defined in ISO/IEC 646. These shall be quoted if
seen in the data stream to avoid interpretation as flow control characters.

ISO/IEC 646 refers to the set of ISO standards described as the ISO
7-bit coded character set for information interchange. Its final version
is also known as ITU T.50.
See https://www.itu.int/rec/T-REC-T.50-199209-I/en

To abide the standard it is needed to quote DC1 and DC3 correctly if these
are seen as data bytes and not as control characters. The current
implementation already tries to enforce this but fails to catch all
defined cases. 3GPP 27.010 chapter 5.2.7.3 clearly states that the most
significant bit shall be ignored for DC1 and DC3 handling. The current
implementation handles only the case with the most significant bit set 0.
Cases in which DC1 and DC3 have the most significant bit set 1 are left
unhandled.

This patch fixes this by masking the data bytes with ISO_IEC_646_MASK (only
the 7 least significant bits set 1) before comparing them with XON
(a.k.a. DC1) and XOFF (a.k.a. DC3) when testing which byte values need
quotation via byte stuffing.

Fixes: e1eaea46bb40 ("tty: n_gsm line discipline")
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Starke <daniel.starke@siemens.com>
Link: https://lore.kernel.org/r/20220120101857.2509-1-daniel.starke@siemens.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/n_gsm.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -317,6 +317,7 @@ static struct tty_driver *gsm_tty_driver
 #define GSM1_ESCAPE_BITS	0x20
 #define XON			0x11
 #define XOFF			0x13
+#define ISO_IEC_646_MASK	0x7F
 
 static const struct tty_port_operations gsm_port_ops;
 
@@ -526,7 +527,8 @@ static int gsm_stuff_frame(const u8 *inp
 	int olen = 0;
 	while (len--) {
 		if (*input == GSM1_SOF || *input == GSM1_ESCAPE
-		    || *input == XON || *input == XOFF) {
+		    || (*input & ISO_IEC_646_MASK) == XON
+		    || (*input & ISO_IEC_646_MASK) == XOFF) {
 			*output++ = GSM1_ESCAPE;
 			*output++ = *input++ ^ GSM1_ESCAPE_BITS;
 			olen++;

[PATCH 5.10 027/100] tty: Add support for Brainboxes UC cards.

[Greg Kroah-Hartman]

From: Cameron Williams <cang1@live.co.uk>

commit 152d1afa834c84530828ee031cf07a00e0fc0b8c upstream.

This commit adds support for the some of the Brainboxes PCI range of
cards, including the UC-101, UC-235/246, UC-257, UC-268, UC-275/279,
UC-302, UC-310, UC-313, UC-320/324, UC-346, UC-357, UC-368
and UC-420/431.

Signed-off-by: Cameron Williams <cang1@live.co.uk>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/AM5PR0202MB2564688493F7DD9B9C610827C45E9@AM5PR0202MB2564.eurprd02.prod.outlook.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/serial/8250/8250_pci.c |  100 ++++++++++++++++++++++++++++++++++++-
 1 file changed, 98 insertions(+), 2 deletions(-)

--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -5171,8 +5171,30 @@ static const struct pci_device_id serial
 	{	PCI_VENDOR_ID_INTASHIELD, PCI_DEVICE_ID_INTASHIELD_IS400,
 		PCI_ANY_ID, PCI_ANY_ID, 0, 0,    /* 135a.0dc0 */
 		pbn_b2_4_115200 },
+	/* Brainboxes Devices */
 	/*
-	 * BrainBoxes UC-260
+	* Brainboxes UC-101
+	*/
+	{       PCI_VENDOR_ID_INTASHIELD, 0x0BA1,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0, 0,
+		pbn_b2_2_115200 },
+	/*
+	 * Brainboxes UC-235/246
+	 */
+	{	PCI_VENDOR_ID_INTASHIELD, 0x0AA1,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0, 0,
+		pbn_b2_1_115200 },
+	/*
+	 * Brainboxes UC-257
+	 */
+	{	PCI_VENDOR_ID_INTASHIELD, 0x0861,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0, 0,
+		pbn_b2_2_115200 },
+	/*
+	 * Brainboxes UC-260/271/701/756
 	 */
 	{	PCI_VENDOR_ID_INTASHIELD, 0x0D21,
 		PCI_ANY_ID, PCI_ANY_ID,
@@ -5180,7 +5202,81 @@ static const struct pci_device_id serial
 		pbn_b2_4_115200 },
 	{	PCI_VENDOR_ID_INTASHIELD, 0x0E34,
 		PCI_ANY_ID, PCI_ANY_ID,
-		 PCI_CLASS_COMMUNICATION_MULTISERIAL << 8, 0xffff00,
+		PCI_CLASS_COMMUNICATION_MULTISERIAL << 8, 0xffff00,
+		pbn_b2_4_115200 },
+	/*
+	 * Brainboxes UC-268
+	 */
+	{       PCI_VENDOR_ID_INTASHIELD, 0x0841,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0, 0,
+		pbn_b2_4_115200 },
+	/*
+	 * Brainboxes UC-275/279
+	 */
+	{	PCI_VENDOR_ID_INTASHIELD, 0x0881,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0, 0,
+		pbn_b2_8_115200 },
+	/*
+	 * Brainboxes UC-302
+	 */
+	{	PCI_VENDOR_ID_INTASHIELD, 0x08E1,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0, 0,
+		pbn_b2_2_115200 },
+	/*
+	 * Brainboxes UC-310
+	 */
+	{       PCI_VENDOR_ID_INTASHIELD, 0x08C1,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0, 0,
+		pbn_b2_2_115200 },
+	/*
+	 * Brainboxes UC-313
+	 */
+	{       PCI_VENDOR_ID_INTASHIELD, 0x08A3,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0, 0,
+		pbn_b2_2_115200 },
+	/*
+	 * Brainboxes UC-320/324
+	 */
+	{	PCI_VENDOR_ID_INTASHIELD, 0x0A61,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0, 0,
+		pbn_b2_1_115200 },
+	/*
+	 * Brainboxes UC-346
+	 */
+	{	PCI_VENDOR_ID_INTASHIELD, 0x0B02,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0, 0,
+		pbn_b2_4_115200 },
+	/*
+	 * Brainboxes UC-357
+	 */
+	{	PCI_VENDOR_ID_INTASHIELD, 0x0A81,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0, 0,
+		pbn_b2_2_115200 },
+	{	PCI_VENDOR_ID_INTASHIELD, 0x0A83,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0, 0,
+		pbn_b2_2_115200 },
+	/*
+	 * Brainboxes UC-368
+	 */
+	{	PCI_VENDOR_ID_INTASHIELD, 0x0C41,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0, 0,
+		pbn_b2_4_115200 },
+	/*
+	 * Brainboxes UC-420/431
+	 */
+	{       PCI_VENDOR_ID_INTASHIELD, 0x0921,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0, 0,
 		pbn_b2_4_115200 },
 	/*
 	 * Perle PCI-RAS cards

[PATCH 5.10 028/100] usb-storage: Add unusual-devs entry for VL817 USB-SATA bridge

[Greg Kroah-Hartman]

From: Alan Stern <stern@rowland.harvard.edu>

commit 5b67b315037250a61861119683e7fcb509deea25 upstream.

Two people have reported (and mentioned numerous other reports on the
web) that VIA's VL817 USB-SATA bridge does not work with the uas
driver.  Typical log messages are:

[ 3606.232149] sd 14:0:0:0: [sdg] tag#2 uas_zap_pending 0 uas-tag 1 inflight: CMD
[ 3606.232154] sd 14:0:0:0: [sdg] tag#2 CDB: Write(16) 8a 00 00 00 00 00 18 0c c9 80 00 00 00 80 00 00
[ 3606.306257] usb 4-4.4: reset SuperSpeed Plus Gen 2x1 USB device number 11 using xhci_hcd
[ 3606.328584] scsi host14: uas_eh_device_reset_handler success

Surprisingly, the devices do seem to work okay for some other people.
The cause of the differing behaviors is not known.

In the hope of getting the devices to work for the most users, even at
the possible cost of degraded performance for some, this patch adds an
unusual_devs entry for the VL817 to block it from binding to the uas
driver by default.  Users will be able to override this entry by means
of a module parameter, if they want.

CC: <stable@vger.kernel.org>
Reported-by: DocMAX <mail@vacharakis.de>
Reported-and-tested-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/Ye8IsK2sjlEv1rqU@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/usb/storage/unusual_devs.h |   10 ++++++++++
 1 file changed, 10 insertions(+)

--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -2301,6 +2301,16 @@ UNUSUAL_DEV(  0x2027, 0xa001, 0x0000, 0x
 		USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_euscsi_init,
 		US_FL_SCM_MULT_TARG ),
 
+/*
+ * Reported by DocMAX <mail@vacharakis.de>
+ * and Thomas Weißschuh <linux@weissschuh.net>
+ */
+UNUSUAL_DEV( 0x2109, 0x0715, 0x9999, 0x9999,
+		"VIA Labs, Inc.",
+		"VL817 SATA Bridge",
+		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+		US_FL_IGNORE_UAS),
+
 UNUSUAL_DEV( 0x2116, 0x0320, 0x0001, 0x0001,
 		"ST",
 		"2A",

[PATCH 5.10 029/100] usb: xhci-plat: fix crash when suspend if remote wake enable

[Greg Kroah-Hartman]

From: Frank Li <Frank.Li@nxp.com>

commit 9df478463d9feb90dae24f183383961cf123a0ec upstream.

Crashed at i.mx8qm platform when suspend if enable remote wakeup

Internal error: synchronous external abort: 96000210 [#1] PREEMPT SMP
Modules linked in:
CPU: 2 PID: 244 Comm: kworker/u12:6 Not tainted 5.15.5-dirty #12
Hardware name: Freescale i.MX8QM MEK (DT)
Workqueue: events_unbound async_run_entry_fn
pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : xhci_disable_hub_port_wake.isra.62+0x60/0xf8
lr : xhci_disable_hub_port_wake.isra.62+0x34/0xf8
sp : ffff80001394bbf0
x29: ffff80001394bbf0 x28: 0000000000000000 x27: ffff00081193b578
x26: ffff00081193b570 x25: 0000000000000000 x24: 0000000000000000
x23: ffff00081193a29c x22: 0000000000020001 x21: 0000000000000001
x20: 0000000000000000 x19: ffff800014e90490 x18: 0000000000000000
x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
x14: 0000000000000000 x13: 0000000000000002 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000000960 x9 : ffff80001394baa0
x8 : ffff0008145d1780 x7 : ffff0008f95b8e80 x6 : 000000001853b453
x5 : 0000000000000496 x4 : 0000000000000000 x3 : ffff00081193a29c
x2 : 0000000000000001 x1 : 0000000000000000 x0 : ffff000814591620
Call trace:
 xhci_disable_hub_port_wake.isra.62+0x60/0xf8
 xhci_suspend+0x58/0x510
 xhci_plat_suspend+0x50/0x78
 platform_pm_suspend+0x2c/0x78
 dpm_run_callback.isra.25+0x50/0xe8
 __device_suspend+0x108/0x3c0

The basic flow:
	1. run time suspend call xhci_suspend, xhci parent devices gate the clock.
        2. echo mem >/sys/power/state, system _device_suspend call xhci_suspend
        3. xhci_suspend call xhci_disable_hub_port_wake, which access register,
	   but clock already gated by run time suspend.

This problem was hidden by power domain driver, which call run time resume before it.

But the below commit remove it and make this issue happen.
	commit c1df456d0f06e ("PM: domains: Don't runtime resume devices at genpd_prepare()")

This patch call run time resume before suspend to make sure clock is on
before access register.

Reviewed-by: Peter Chen <peter.chen@kernel.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Testeb-by: Abel Vesa <abel.vesa@nxp.com>
Link: https://lore.kernel.org/r/20220110172738.31686-1-Frank.Li@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/usb/host/xhci-plat.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -437,6 +437,9 @@ static int __maybe_unused xhci_plat_susp
 	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
 	int ret;
 
+	if (pm_runtime_suspended(dev))
+		pm_runtime_resume(dev);
+
 	ret = xhci_priv_suspend_quirk(hcd);
 	if (ret)
 		return ret;

[PATCH 5.10 030/100] usb: common: ulpi: Fix crash in ulpi_match()

[Greg Kroah-Hartman]

From: Jon Hunter <jonathanh@nvidia.com>

commit 2e3dd4a6246945bf84ea6f478365d116e661554c upstream.

Commit 7495af930835 ("ARM: multi_v7_defconfig: Enable drivers for
DragonBoard 410c") enables the CONFIG_PHY_QCOM_USB_HS for the ARM
multi_v7_defconfig. Enabling this Kconfig is causing the kernel to crash
on the Tegra20 Ventana platform in the ulpi_match() function.

The Qualcomm USB HS PHY driver that is enabled by CONFIG_PHY_QCOM_USB_HS,
registers a ulpi_driver but this driver does not provide an 'id_table',
so when ulpi_match() is called on the Tegra20 Ventana platform, it
crashes when attempting to deference the id_table pointer which is not
valid. The Qualcomm USB HS PHY driver uses device-tree for matching the
ULPI driver with the device and so fix this crash by using device-tree
for matching if the id_table is not valid.

Fixes: ef6a7bcfb01c ("usb: ulpi: Support device discovery via DT")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/r/20220117150039.44058-1-jonathanh@nvidia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/usb/common/ulpi.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

--- a/drivers/usb/common/ulpi.c
+++ b/drivers/usb/common/ulpi.c
@@ -39,8 +39,11 @@ static int ulpi_match(struct device *dev
 	struct ulpi *ulpi = to_ulpi_dev(dev);
 	const struct ulpi_device_id *id;
 
-	/* Some ULPI devices don't have a vendor id so rely on OF match */
-	if (ulpi->id.vendor == 0)
+	/*
+	 * Some ULPI devices don't have a vendor id
+	 * or provide an id_table so rely on OF match.
+	 */
+	if (ulpi->id.vendor == 0 || !drv->id_table)
 		return of_driver_match_device(dev, driver);
 
 	for (id = drv->id_table; id->vendor; id++)

[PATCH 5.10 031/100] usb: gadget: f_sourcesink: Fix isoc transfer for USB_SPEED_SUPER_PLUS

[Greg Kroah-Hartman]

From: Pavankumar Kondeti <quic_pkondeti@quicinc.com>

commit 904edf8aeb459697129be5fde847e2a502f41fd9 upstream.

Currently when gadget enumerates in super speed plus, the isoc
endpoint request buffer size is not calculated correctly. Fix
this by checking the gadget speed against USB_SPEED_SUPER_PLUS
and update the request buffer size.

Fixes: 90c4d05780d4 ("usb: fix various gadgets null ptr deref on 10gbps cabling.")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Pavankumar Kondeti <quic_pkondeti@quicinc.com>
Link: https://lore.kernel.org/r/1642820602-20619-1-git-send-email-quic_pkondeti@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/usb/gadget/function/f_sourcesink.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/usb/gadget/function/f_sourcesink.c
+++ b/drivers/usb/gadget/function/f_sourcesink.c
@@ -583,6 +583,7 @@ static int source_sink_start_ep(struct f
 
 	if (is_iso) {
 		switch (speed) {
+		case USB_SPEED_SUPER_PLUS:
 		case USB_SPEED_SUPER:
 			size = ss->isoc_maxpacket *
 					(ss->isoc_mult + 1) *

[PATCH 5.10 032/100] USB: core: Fix hang in usb_kill_urb by adding memory barriers

[Greg Kroah-Hartman]

From: Alan Stern <stern@rowland.harvard.edu>

commit 26fbe9772b8c459687930511444ce443011f86bf upstream.

The syzbot fuzzer has identified a bug in which processes hang waiting
for usb_kill_urb() to return.  It turns out the issue is not unlinking
the URB; that works just fine.  Rather, the problem arises when the
wakeup notification that the URB has completed is not received.

The reason is memory-access ordering on SMP systems.  In outline form,
usb_kill_urb() and __usb_hcd_giveback_urb() operating concurrently on
different CPUs perform the following actions:

CPU 0					CPU 1
----------------------------		---------------------------------
usb_kill_urb():				__usb_hcd_giveback_urb():
  ...					  ...
  atomic_inc(&urb->reject);		  atomic_dec(&urb->use_count);
  ...					  ...
  wait_event(usb_kill_urb_queue,
	atomic_read(&urb->use_count) == 0);
					  if (atomic_read(&urb->reject))
						wake_up(&usb_kill_urb_queue);

Confining your attention to urb->reject and urb->use_count, you can
see that the overall pattern of accesses on CPU 0 is:

	write urb->reject, then read urb->use_count;

whereas the overall pattern of accesses on CPU 1 is:

	write urb->use_count, then read urb->reject.

This pattern is referred to in memory-model circles as SB (for "Store
Buffering"), and it is well known that without suitable enforcement of
the desired order of accesses -- in the form of memory barriers -- it
is entirely possible for one or both CPUs to execute their reads ahead
of their writes.  The end result will be that sometimes CPU 0 sees the
old un-decremented value of urb->use_count while CPU 1 sees the old
un-incremented value of urb->reject.  Consequently CPU 0 ends up on
the wait queue and never gets woken up, leading to the observed hang
in usb_kill_urb().

The same pattern of accesses occurs in usb_poison_urb() and the
failure pathway of usb_hcd_submit_urb().

The problem is fixed by adding suitable memory barriers.  To provide
proper memory-access ordering in the SB pattern, a full barrier is
required on both CPUs.  The atomic_inc() and atomic_dec() accesses
themselves don't provide any memory ordering, but since they are
present, we can use the optimized smp_mb__after_atomic() memory
barrier in the various routines to obtain the desired effect.

This patch adds the necessary memory barriers.

CC: <stable@vger.kernel.org>
Reported-and-tested-by: syzbot+76629376e06e2c2ad626@syzkaller.appspotmail.com
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/Ye8K0QYee0Q0Nna2@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/usb/core/hcd.c |   14 ++++++++++++++
 drivers/usb/core/urb.c |   12 ++++++++++++
 2 files changed, 26 insertions(+)

--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -1562,6 +1562,13 @@ int usb_hcd_submit_urb (struct urb *urb,
 		urb->hcpriv = NULL;
 		INIT_LIST_HEAD(&urb->urb_list);
 		atomic_dec(&urb->use_count);
+		/*
+		 * Order the write of urb->use_count above before the read
+		 * of urb->reject below.  Pairs with the memory barriers in
+		 * usb_kill_urb() and usb_poison_urb().
+		 */
+		smp_mb__after_atomic();
+
 		atomic_dec(&urb->dev->urbnum);
 		if (atomic_read(&urb->reject))
 			wake_up(&usb_kill_urb_queue);
@@ -1666,6 +1673,13 @@ static void __usb_hcd_giveback_urb(struc
 
 	usb_anchor_resume_wakeups(anchor);
 	atomic_dec(&urb->use_count);
+	/*
+	 * Order the write of urb->use_count above before the read
+	 * of urb->reject below.  Pairs with the memory barriers in
+	 * usb_kill_urb() and usb_poison_urb().
+	 */
+	smp_mb__after_atomic();
+
 	if (unlikely(atomic_read(&urb->reject)))
 		wake_up(&usb_kill_urb_queue);
 	usb_put_urb(urb);
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -706,6 +706,12 @@ void usb_kill_urb(struct urb *urb)
 	if (!(urb && urb->dev && urb->ep))
 		return;
 	atomic_inc(&urb->reject);
+	/*
+	 * Order the write of urb->reject above before the read
+	 * of urb->use_count below.  Pairs with the barriers in
+	 * __usb_hcd_giveback_urb() and usb_hcd_submit_urb().
+	 */
+	smp_mb__after_atomic();
 
 	usb_hcd_unlink_urb(urb, -ENOENT);
 	wait_event(usb_kill_urb_queue, atomic_read(&urb->use_count) == 0);
@@ -747,6 +753,12 @@ void usb_poison_urb(struct urb *urb)
 	if (!urb)
 		return;
 	atomic_inc(&urb->reject);
+	/*
+	 * Order the write of urb->reject above before the read
+	 * of urb->use_count below.  Pairs with the barriers in
+	 * __usb_hcd_giveback_urb() and usb_hcd_submit_urb().
+	 */
+	smp_mb__after_atomic();
 
 	if (!urb->dev || !urb->ep)
 		return;

[PATCH 5.10 033/100] usb: typec: tcpm: Do not disconnect while receiving VBUS off

[Greg Kroah-Hartman]

From: Badhri Jagan Sridharan <badhri@google.com>

commit 90b8aa9f5b09edae6928c0561f933fec9f7a9987 upstream.

With some chargers, vbus might momentarily raise above VSAFE5V and fall
back to 0V before tcpm gets to read port->tcpc->get_vbus. This will
will report a VBUS off event causing TCPM to transition to
SNK_UNATTACHED where it should be waiting in either SNK_ATTACH_WAIT
or SNK_DEBOUNCED state. This patch makes TCPM avoid vbus off events
while in SNK_ATTACH_WAIT or SNK_DEBOUNCED state.

Stub from the spec:
    "4.5.2.2.4.2 Exiting from AttachWait.SNK State
    A Sink shall transition to Unattached.SNK when the state of both
    the CC1 and CC2 pins is SNK.Open for at least tPDDebounce.
    A DRP shall transition to Unattached.SRC when the state of both
    the CC1 and CC2 pins is SNK.Open for at least tPDDebounce."

[23.194131] CC1: 0 -> 0, CC2: 0 -> 5 [state SNK_UNATTACHED, polarity 0, connected]
[23.201777] state change SNK_UNATTACHED -> SNK_ATTACH_WAIT [rev3 NONE_AMS]
[23.209949] pending state change SNK_ATTACH_WAIT -> SNK_DEBOUNCED @ 170 ms [rev3 NONE_AMS]
[23.300579] VBUS off
[23.300668] state change SNK_ATTACH_WAIT -> SNK_UNATTACHED [rev3 NONE_AMS]
[23.301014] VBUS VSAFE0V
[23.301111] Start toggling

Fixes: f0690a25a140b8 ("staging: typec: USB Type-C Port Manager (tcpm)")
Cc: stable@vger.kernel.org
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Link: https://lore.kernel.org/r/20220122015520.332507-1-badhri@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/usb/typec/tcpm/tcpm.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/usb/typec/tcpm/tcpm.c
+++ b/drivers/usb/typec/tcpm/tcpm.c
@@ -4164,7 +4164,8 @@ static void _tcpm_pd_vbus_off(struct tcp
 	case SNK_TRYWAIT_DEBOUNCE:
 		break;
 	case SNK_ATTACH_WAIT:
-		tcpm_set_state(port, SNK_UNATTACHED, 0);
+	case SNK_DEBOUNCED:
+		/* Do nothing, as TCPM is still waiting for vbus to reaach VSAFE5V to connect */
 		break;
 
 	case SNK_NEGOTIATE_CAPABILITIES:

[PATCH 5.10 034/100] ucsi_ccg: Check DEV_INT bit only when starting CCG4

[Greg Kroah-Hartman]

From: Sing-Han Chen <singhanc@nvidia.com>

commit 825911492eb15bf8bb7fb94bc0c0421fe7a6327d upstream.

CCGx clears Bit 0:Device Interrupt in the INTR_REG
if CCGx is reset successfully. However, there might
be a chance that other bits in INTR_REG are not
cleared due to internal data queued in PPM. This case
misleads the driver that CCGx reset failed.

The commit checks bit 0 in INTR_REG and ignores other
bits. The ucsi driver would reset PPM later.

Fixes: 247c554a14aa ("usb: typec: ucsi: add support for Cypress CCGx")
Cc: stable@vger.kernel.org
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Sing-Han Chen <singhanc@nvidia.com>
Signed-off-by: Wayne Chang <waynec@nvidia.com>
Link: https://lore.kernel.org/r/20220112094143.628610-1-waynec@nvidia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/usb/typec/ucsi/ucsi_ccg.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/typec/ucsi/ucsi_ccg.c
+++ b/drivers/usb/typec/ucsi/ucsi_ccg.c
@@ -325,7 +325,7 @@ static int ucsi_ccg_init(struct ucsi_ccg
 		if (status < 0)
 			return status;
 
-		if (!data)
+		if (!(data & DEV_INT))
 			return 0;
 
 		status = ccg_write(uc, CCGX_RAB_INTR_REG, &data, sizeof(data));

[PATCH 5.10 035/100] jbd2: export jbd2_journal_[grab|put]_journal_head

[Greg Kroah-Hartman]

From: Joseph Qi <joseph.qi@linux.alibaba.com>

commit 4cd1103d8c66b2cdb7e64385c274edb0ac5e8887 upstream.

Patch series "ocfs2: fix a deadlock case".

This fixes a deadlock case in ocfs2.  We firstly export jbd2 symbols
jbd2_journal_[grab|put]_journal_head as preparation and later use them
in ocfs2 insread of jbd_[lock|unlock]_bh_journal_head to fix the
deadlock.

This patch (of 2):

This exports symbols jbd2_journal_[grab|put]_journal_head, which will be
used outside modules, e.g.  ocfs2.

Link: https://lkml.kernel.org/r/20220121071205.100648-2-joseph.qi@linux.alibaba.com
Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: Gautham Ananthakrishna <gautham.ananthakrishna@oracle.com>
Cc: Saeed Mirzamohammadi <saeed.mirzamohammadi@oracle.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/jbd2/journal.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -2795,6 +2795,7 @@ struct journal_head *jbd2_journal_grab_j
 	jbd_unlock_bh_journal_head(bh);
 	return jh;
 }
+EXPORT_SYMBOL(jbd2_journal_grab_journal_head);
 
 static void __journal_remove_journal_head(struct buffer_head *bh)
 {
@@ -2847,6 +2848,7 @@ void jbd2_journal_put_journal_head(struc
 		jbd_unlock_bh_journal_head(bh);
 	}
 }
+EXPORT_SYMBOL(jbd2_journal_put_journal_head);
 
 /*
  * Initialize jbd inode head

[PATCH 5.10 036/100] ocfs2: fix a deadlock when commit trans

[Greg Kroah-Hartman]

From: Joseph Qi <joseph.qi@linux.alibaba.com>

commit ddf4b773aa40790dfa936bd845c18e735a49c61c upstream.

commit 6f1b228529ae introduces a regression which can deadlock as
follows:

  Task1:                              Task2:
  jbd2_journal_commit_transaction     ocfs2_test_bg_bit_allocatable
  spin_lock(&jh->b_state_lock)        jbd_lock_bh_journal_head
  __jbd2_journal_remove_checkpoint    spin_lock(&jh->b_state_lock)
  jbd2_journal_put_journal_head
  jbd_lock_bh_journal_head

Task1 and Task2 lock bh->b_state and jh->b_state_lock in different
order, which finally result in a deadlock.

So use jbd2_journal_[grab|put]_journal_head instead in
ocfs2_test_bg_bit_allocatable() to fix it.

Link: https://lkml.kernel.org/r/20220121071205.100648-3-joseph.qi@linux.alibaba.com
Fixes: 6f1b228529ae ("ocfs2: fix race between searching chunks and release journal_head from buffer_head")
Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Reported-by: Gautham Ananthakrishna <gautham.ananthakrishna@oracle.com>
Tested-by: Gautham Ananthakrishna <gautham.ananthakrishna@oracle.com>
Reported-by: Saeed Mirzamohammadi <saeed.mirzamohammadi@oracle.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Jun Piao <piaojun@huawei.com>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/ocfs2/suballoc.c |   25 +++++++++++--------------
 1 file changed, 11 insertions(+), 14 deletions(-)

--- a/fs/ocfs2/suballoc.c
+++ b/fs/ocfs2/suballoc.c
@@ -1253,26 +1253,23 @@ static int ocfs2_test_bg_bit_allocatable
 {
 	struct ocfs2_group_desc *bg = (struct ocfs2_group_desc *) bg_bh->b_data;
 	struct journal_head *jh;
-	int ret = 1;
+	int ret;
 
 	if (ocfs2_test_bit(nr, (unsigned long *)bg->bg_bitmap))
 		return 0;
 
-	if (!buffer_jbd(bg_bh))
+	jh = jbd2_journal_grab_journal_head(bg_bh);
+	if (!jh)
 		return 1;
 
-	jbd_lock_bh_journal_head(bg_bh);
-	if (buffer_jbd(bg_bh)) {
-		jh = bh2jh(bg_bh);
-		spin_lock(&jh->b_state_lock);
-		bg = (struct ocfs2_group_desc *) jh->b_committed_data;
-		if (bg)
-			ret = !ocfs2_test_bit(nr, (unsigned long *)bg->bg_bitmap);
-		else
-			ret = 1;
-		spin_unlock(&jh->b_state_lock);
-	}
-	jbd_unlock_bh_journal_head(bg_bh);
+	spin_lock(&jh->b_state_lock);
+	bg = (struct ocfs2_group_desc *) jh->b_committed_data;
+	if (bg)
+		ret = !ocfs2_test_bit(nr, (unsigned long *)bg->bg_bitmap);
+	else
+		ret = 1;
+	spin_unlock(&jh->b_state_lock);
+	jbd2_journal_put_journal_head(jh);
 
 	return ret;
 }

[PATCH 5.10 037/100] sched/membarrier: Fix membarrier-rseq fence command missing from query bitmask

[Greg Kroah-Hartman]

From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

commit 809232619f5b15e31fb3563985e705454f32621f upstream.

The membarrier command MEMBARRIER_CMD_QUERY allows querying the
available membarrier commands. When the membarrier-rseq fence commands
were added, a new MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ_BITMASK was
introduced with the intent to expose them with the MEMBARRIER_CMD_QUERY
command, the but it was never added to MEMBARRIER_CMD_BITMASK.

The membarrier-rseq fence commands are therefore not wired up with the
query command.

Rename MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ_BITMASK to
MEMBARRIER_PRIVATE_EXPEDITED_RSEQ_BITMASK (the bitmask is not a command
per-se), and change the erroneous
MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_RSEQ_BITMASK (which does not
actually exist) to MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_RSEQ.

Wire up MEMBARRIER_PRIVATE_EXPEDITED_RSEQ_BITMASK in
MEMBARRIER_CMD_BITMASK. Fixing this allows discovering availability of
the membarrier-rseq fence feature.

Fixes: 2a36ab717e8f ("rseq/membarrier: Add MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ")
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: <stable@vger.kernel.org> # 5.10+
Link: https://lkml.kernel.org/r/20220117203010.30129-1-mathieu.desnoyers@efficios.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 kernel/sched/membarrier.c |    9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

--- a/kernel/sched/membarrier.c
+++ b/kernel/sched/membarrier.c
@@ -19,11 +19,11 @@
 #endif
 
 #ifdef CONFIG_RSEQ
-#define MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ_BITMASK		\
+#define MEMBARRIER_PRIVATE_EXPEDITED_RSEQ_BITMASK		\
 	(MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ			\
-	| MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_RSEQ_BITMASK)
+	| MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_RSEQ)
 #else
-#define MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ_BITMASK	0
+#define MEMBARRIER_PRIVATE_EXPEDITED_RSEQ_BITMASK	0
 #endif
 
 #define MEMBARRIER_CMD_BITMASK						\
@@ -31,7 +31,8 @@
 	| MEMBARRIER_CMD_REGISTER_GLOBAL_EXPEDITED			\
 	| MEMBARRIER_CMD_PRIVATE_EXPEDITED				\
 	| MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED			\
-	| MEMBARRIER_PRIVATE_EXPEDITED_SYNC_CORE_BITMASK)
+	| MEMBARRIER_PRIVATE_EXPEDITED_SYNC_CORE_BITMASK		\
+	| MEMBARRIER_PRIVATE_EXPEDITED_RSEQ_BITMASK)
 
 static void ipi_mb(void *info)
 {

[PATCH 5.10 038/100] x86/MCE/AMD: Allow thresholding interface updates after init

[Greg Kroah-Hartman]

From: Yazen Ghannam <yazen.ghannam@amd.com>

commit 1f52b0aba6fd37653416375cb8a1ca673acf8d5f upstream.

Changes to the AMD Thresholding sysfs code prevents sysfs writes from
updating the underlying registers once CPU init is completed, i.e.
"threshold_banks" is set.

Allow the registers to be updated if the thresholding interface is
already initialized or if in the init path. Use the "set_lvt_off" value
to indicate if running in the init path, since this value is only set
during init.

Fixes: a037f3ca0ea0 ("x86/mce/amd: Make threshold bank setting hotplug robust")
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220117161328.19148-1-yazen.ghannam@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/x86/kernel/cpu/mce/amd.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/kernel/cpu/mce/amd.c
+++ b/arch/x86/kernel/cpu/mce/amd.c
@@ -387,7 +387,7 @@ static void threshold_restart_bank(void
 	u32 hi, lo;
 
 	/* sysfs write might race against an offline operation */
-	if (this_cpu_read(threshold_banks))
+	if (!this_cpu_read(threshold_banks) && !tr->set_lvt_off)
 		return;
 
 	rdmsr(tr->b->address, lo, hi);

[PATCH 5.10 039/100] powerpc/32s: Allocate one 256k IBAT instead of two consecutives 128k IBATs

[Greg Kroah-Hartman]

From: Christophe Leroy <christophe.leroy@csgroup.eu>

commit 37eb7ca91b692e8e49e7dd50158349a6c8fb5b09 upstream.

Today we have the following IBATs allocated:

	---[ Instruction Block Address Translation ]---
	0: 0xc0000000-0xc03fffff 0x00000000         4M Kernel   x     m
	1: 0xc0400000-0xc05fffff 0x00400000         2M Kernel   x     m
	2: 0xc0600000-0xc06fffff 0x00600000         1M Kernel   x     m
	3: 0xc0700000-0xc077ffff 0x00700000       512K Kernel   x     m
	4: 0xc0780000-0xc079ffff 0x00780000       128K Kernel   x     m
	5: 0xc07a0000-0xc07bffff 0x007a0000       128K Kernel   x     m
	6:         -
	7:         -

The two 128K should be a single 256K instead.

When _etext is not aligned to 128Kbytes, the system will allocate
all necessary BATs to the lower 128Kbytes boundary, then allocate
an additional 128Kbytes BAT for the remaining block.

Instead, align the top to 128Kbytes so that the function directly
allocates a 256Kbytes last block:

	---[ Instruction Block Address Translation ]---
	0: 0xc0000000-0xc03fffff 0x00000000         4M Kernel   x     m
	1: 0xc0400000-0xc05fffff 0x00400000         2M Kernel   x     m
	2: 0xc0600000-0xc06fffff 0x00600000         1M Kernel   x     m
	3: 0xc0700000-0xc077ffff 0x00700000       512K Kernel   x     m
	4: 0xc0780000-0xc07bffff 0x00780000       256K Kernel   x     m
	5:         -
	6:         -
	7:         -

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/ab58b296832b0ec650e2203200e060adbcb2677d.1637930421.git.christophe.leroy@csgroup.eu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/powerpc/mm/book3s32/mmu.c |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

--- a/arch/powerpc/mm/book3s32/mmu.c
+++ b/arch/powerpc/mm/book3s32/mmu.c
@@ -201,18 +201,17 @@ void mmu_mark_initmem_nx(void)
 	int nb = mmu_has_feature(MMU_FTR_USE_HIGH_BATS) ? 8 : 4;
 	int i;
 	unsigned long base = (unsigned long)_stext - PAGE_OFFSET;
-	unsigned long top = (unsigned long)_etext - PAGE_OFFSET;
+	unsigned long top = ALIGN((unsigned long)_etext - PAGE_OFFSET, SZ_128K);
 	unsigned long border = (unsigned long)__init_begin - PAGE_OFFSET;
 	unsigned long size;
 
-	for (i = 0; i < nb - 1 && base < top && top - base > (128 << 10);) {
+	for (i = 0; i < nb - 1 && base < top;) {
 		size = block_size(base, top);
 		setibat(i++, PAGE_OFFSET + base, base, size, PAGE_KERNEL_TEXT);
 		base += size;
 	}
 	if (base < top) {
 		size = block_size(base, top);
-		size = max(size, 128UL << 10);
 		if ((top - base) > size) {
 			size <<= 1;
 			if (strict_kernel_rwx_enabled() && base + size > border)

[PATCH 5.10 040/100] powerpc/32s: Fix kasan_init_region() for KASAN

[Greg Kroah-Hartman]

From: Christophe Leroy <christophe.leroy@csgroup.eu>

commit d37823c3528e5e0705fc7746bcbc2afffb619259 upstream.

It has been reported some configuration where the kernel doesn't
boot with KASAN enabled.

This is due to wrong BAT allocation for the KASAN area:

	---[ Data Block Address Translation ]---
	0: 0xc0000000-0xcfffffff 0x00000000       256M Kernel rw      m
	1: 0xd0000000-0xdfffffff 0x10000000       256M Kernel rw      m
	2: 0xe0000000-0xefffffff 0x20000000       256M Kernel rw      m
	3: 0xf8000000-0xf9ffffff 0x2a000000        32M Kernel rw      m
	4: 0xfa000000-0xfdffffff 0x2c000000        64M Kernel rw      m

A BAT must have both virtual and physical addresses alignment matching
the size of the BAT. This is not the case for BAT 4 above.

Fix kasan_init_region() by using block_size() function that is in
book3s32/mmu.c. To be able to reuse it here, make it non static and
change its name to bat_block_size() in order to avoid name conflict
with block_size() defined in <linux/blkdev.h>

Also reuse find_free_bat() to avoid an error message from setbat()
when no BAT is available.

And allocate memory outside of linear memory mapping to avoid
wasting that precious space.

With this change we get correct alignment for BATs and KASAN shadow
memory is allocated outside the linear memory space.

	---[ Data Block Address Translation ]---
	0: 0xc0000000-0xcfffffff 0x00000000       256M Kernel rw
	1: 0xd0000000-0xdfffffff 0x10000000       256M Kernel rw
	2: 0xe0000000-0xefffffff 0x20000000       256M Kernel rw
	3: 0xf8000000-0xfbffffff 0x7c000000        64M Kernel rw
	4: 0xfc000000-0xfdffffff 0x7a000000        32M Kernel rw

Fixes: 7974c4732642 ("powerpc/32s: Implement dedicated kasan_init_region()")
Cc: stable@vger.kernel.org
Reported-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Tested-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/7a50ef902494d1325227d47d33dada01e52e5518.1641818726.git.christophe.leroy@csgroup.eu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/powerpc/include/asm/book3s/32/mmu-hash.h |    2 
 arch/powerpc/mm/book3s32/mmu.c                |   10 ++--
 arch/powerpc/mm/kasan/book3s_32.c             |   57 +++++++++++++-------------
 3 files changed, 37 insertions(+), 32 deletions(-)

--- a/arch/powerpc/include/asm/book3s/32/mmu-hash.h
+++ b/arch/powerpc/include/asm/book3s/32/mmu-hash.h
@@ -102,6 +102,8 @@ extern s32 patch__hash_page_B, patch__ha
 extern s32 patch__flush_hash_A0, patch__flush_hash_A1, patch__flush_hash_A2;
 extern s32 patch__flush_hash_B;
 
+int __init find_free_bat(void);
+unsigned int bat_block_size(unsigned long base, unsigned long top);
 #endif /* !__ASSEMBLY__ */
 
 /* We happily ignore the smaller BATs on 601, we don't actually use
--- a/arch/powerpc/mm/book3s32/mmu.c
+++ b/arch/powerpc/mm/book3s32/mmu.c
@@ -72,7 +72,7 @@ unsigned long p_block_mapped(phys_addr_t
 	return 0;
 }
 
-static int find_free_bat(void)
+int __init find_free_bat(void)
 {
 	int b;
 	int n = mmu_has_feature(MMU_FTR_USE_HIGH_BATS) ? 8 : 4;
@@ -96,7 +96,7 @@ static int find_free_bat(void)
  * - block size has to be a power of two. This is calculated by finding the
  *   highest bit set to 1.
  */
-static unsigned int block_size(unsigned long base, unsigned long top)
+unsigned int bat_block_size(unsigned long base, unsigned long top)
 {
 	unsigned int max_size = SZ_256M;
 	unsigned int base_shift = (ffs(base) - 1) & 31;
@@ -141,7 +141,7 @@ static unsigned long __init __mmu_mapin_
 	int idx;
 
 	while ((idx = find_free_bat()) != -1 && base != top) {
-		unsigned int size = block_size(base, top);
+		unsigned int size = bat_block_size(base, top);
 
 		if (size < 128 << 10)
 			break;
@@ -206,12 +206,12 @@ void mmu_mark_initmem_nx(void)
 	unsigned long size;
 
 	for (i = 0; i < nb - 1 && base < top;) {
-		size = block_size(base, top);
+		size = bat_block_size(base, top);
 		setibat(i++, PAGE_OFFSET + base, base, size, PAGE_KERNEL_TEXT);
 		base += size;
 	}
 	if (base < top) {
-		size = block_size(base, top);
+		size = bat_block_size(base, top);
 		if ((top - base) > size) {
 			size <<= 1;
 			if (strict_kernel_rwx_enabled() && base + size > border)
--- a/arch/powerpc/mm/kasan/book3s_32.c
+++ b/arch/powerpc/mm/kasan/book3s_32.c
@@ -10,48 +10,51 @@ int __init kasan_init_region(void *start
 {
 	unsigned long k_start = (unsigned long)kasan_mem_to_shadow(start);
 	unsigned long k_end = (unsigned long)kasan_mem_to_shadow(start + size);
-	unsigned long k_cur = k_start;
-	int k_size = k_end - k_start;
-	int k_size_base = 1 << (ffs(k_size) - 1);
+	unsigned long k_nobat = k_start;
+	unsigned long k_cur;
+	phys_addr_t phys;
 	int ret;
-	void *block;
 
-	block = memblock_alloc(k_size, k_size_base);
+	while (k_nobat < k_end) {
+		unsigned int k_size = bat_block_size(k_nobat, k_end);
+		int idx = find_free_bat();
+
+		if (idx == -1)
+			break;
+		if (k_size < SZ_128K)
+			break;
+		phys = memblock_phys_alloc_range(k_size, k_size, 0,
+						 MEMBLOCK_ALLOC_ANYWHERE);
+		if (!phys)
+			break;
 
-	if (block && k_size_base >= SZ_128K && k_start == ALIGN(k_start, k_size_base)) {
-		int shift = ffs(k_size - k_size_base);
-		int k_size_more = shift ? 1 << (shift - 1) : 0;
-
-		setbat(-1, k_start, __pa(block), k_size_base, PAGE_KERNEL);
-		if (k_size_more >= SZ_128K)
-			setbat(-1, k_start + k_size_base, __pa(block) + k_size_base,
-			       k_size_more, PAGE_KERNEL);
-		if (v_block_mapped(k_start))
-			k_cur = k_start + k_size_base;
-		if (v_block_mapped(k_start + k_size_base))
-			k_cur = k_start + k_size_base + k_size_more;
-
-		update_bats();
+		setbat(idx, k_nobat, phys, k_size, PAGE_KERNEL);
+		k_nobat += k_size;
 	}
+	if (k_nobat != k_start)
+		update_bats();
 
-	if (!block)
-		block = memblock_alloc(k_size, PAGE_SIZE);
-	if (!block)
-		return -ENOMEM;
+	if (k_nobat < k_end) {
+		phys = memblock_phys_alloc_range(k_end - k_nobat, PAGE_SIZE, 0,
+						 MEMBLOCK_ALLOC_ANYWHERE);
+		if (!phys)
+			return -ENOMEM;
+	}
 
 	ret = kasan_init_shadow_page_tables(k_start, k_end);
 	if (ret)
 		return ret;
 
-	kasan_update_early_region(k_start, k_cur, __pte(0));
+	kasan_update_early_region(k_start, k_nobat, __pte(0));
 
-	for (; k_cur < k_end; k_cur += PAGE_SIZE) {
+	for (k_cur = k_nobat; k_cur < k_end; k_cur += PAGE_SIZE) {
 		pmd_t *pmd = pmd_off_k(k_cur);
-		void *va = block + k_cur - k_start;
-		pte_t pte = pfn_pte(PHYS_PFN(__pa(va)), PAGE_KERNEL);
+		pte_t pte = pfn_pte(PHYS_PFN(phys + k_cur - k_nobat), PAGE_KERNEL);
 
 		__set_pte_at(&init_mm, k_cur, pte_offset_kernel(pmd, k_cur), pte, 0);
 	}
 	flush_tlb_kernel_range(k_start, k_end);
+	memset(kasan_mem_to_shadow(start), 0, k_end - k_start);
+
 	return 0;
 }

[PATCH 5.10 041/100] powerpc/32: Fix boot failure with GCC latent entropy plugin

[Greg Kroah-Hartman]

From: Christophe Leroy <christophe.leroy@csgroup.eu>

commit bba496656a73fc1d1330b49c7f82843836e9feb1 upstream.

Boot fails with GCC latent entropy plugin enabled.

This is due to early boot functions trying to access 'latent_entropy'
global data while the kernel is not relocated at its final
destination yet.

As there is no way to tell GCC to use PTRRELOC() to access it,
disable latent entropy plugin in early_32.o and feature-fixups.o and
code-patching.o

Fixes: 38addce8b600 ("gcc-plugins: Add latent_entropy plugin")
Cc: stable@vger.kernel.org # v4.9+
Reported-by: Erhard Furtner <erhard_f@mailbox.org>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=215217
Link: https://lore.kernel.org/r/2bac55483b8daf5b1caa163a45fa5f9cdbe18be4.1640178426.git.christophe.leroy@csgroup.eu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/powerpc/kernel/Makefile |    1 +
 arch/powerpc/lib/Makefile    |    3 +++
 2 files changed, 4 insertions(+)

--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -11,6 +11,7 @@ CFLAGS_prom_init.o      += -fPIC
 CFLAGS_btext.o		+= -fPIC
 endif
 
+CFLAGS_early_32.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)
 CFLAGS_cputable.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)
 CFLAGS_prom_init.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)
 CFLAGS_btext.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)
--- a/arch/powerpc/lib/Makefile
+++ b/arch/powerpc/lib/Makefile
@@ -19,6 +19,9 @@ CFLAGS_code-patching.o += -DDISABLE_BRAN
 CFLAGS_feature-fixups.o += -DDISABLE_BRANCH_PROFILING
 endif
 
+CFLAGS_code-patching.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)
+CFLAGS_feature-fixups.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)
+
 obj-y += alloc.o code-patching.o feature-fixups.o pmem.o inst.o test_code-patching.o
 
 ifndef CONFIG_KASAN

[PATCH 5.10 042/100] i40e: Increase delay to 1 s after global EMP reset

[Greg Kroah-Hartman]

From: Jedrzej Jagielski <jedrzej.jagielski@intel.com>

commit 9b13bd53134c9ddd544a790125199fdbdb505e67 upstream.

Recently simplified i40e_rebuild causes that FW sometimes
is not ready after NVM update, the ping does not return.

Increase the delay in case of EMP reset.
Old delay of 300 ms was introduced for specific cards for 710 series.
Now it works for all the cards and delay was increased.

Fixes: 1fa51a650e1d ("i40e: Add delay after EMP reset for firmware to recover")
Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Signed-off-by: Jedrzej Jagielski <jedrzej.jagielski@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/intel/i40e/i40e_main.c |   12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -10130,15 +10130,9 @@ static void i40e_rebuild(struct i40e_pf
 	}
 	i40e_get_oem_version(&pf->hw);
 
-	if (test_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state) &&
-	    ((hw->aq.fw_maj_ver == 4 && hw->aq.fw_min_ver <= 33) ||
-	     hw->aq.fw_maj_ver < 4) && hw->mac.type == I40E_MAC_XL710) {
-		/* The following delay is necessary for 4.33 firmware and older
-		 * to recover after EMP reset. 200 ms should suffice but we
-		 * put here 300 ms to be sure that FW is ready to operate
-		 * after reset.
-		 */
-		mdelay(300);
+	if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state)) {
+		/* The following delay is necessary for firmware update. */
+		mdelay(1000);
 	}
 
 	/* re-verify the eeprom if we just had an EMP reset */

[PATCH 5.10 043/100] i40e: Fix issue when maximum queues is exceeded

[Greg Kroah-Hartman]

From: Jedrzej Jagielski <jedrzej.jagielski@intel.com>

commit d701658a50a471591094b3eb3961b4926cc8f104 upstream.

Before this patch VF interface vanished when
maximum queue number was exceeded. Driver tried
to add next queues even if there was not enough
space. PF sent incorrect number of queues to
the VF when there were not enough of them.

Add an additional condition introduced to check
available space in 'qp_pile' before proceeding.
This condition makes it impossible to add queues
if they number is greater than the number resulting
from available space.
Also add the search for free space in PF queue
pair piles.

Without this patch VF interfaces are not seen
when available space for queues has been
exceeded and following logs appears permanently
in dmesg:
"Unable to get VF config (-32)".
"VF 62 failed opcode 3, retval: -5"
"Unable to get VF config due to PF error condition, not retrying"

Fixes: 7daa6bf3294e ("i40e: driver core headers")
Fixes: 41c445ff0f48 ("i40e: main driver core")
Signed-off-by: Jaroslaw Gawin <jaroslawx.gawin@intel.com>
Signed-off-by: Slawomir Laba <slawomirx.laba@intel.com>
Signed-off-by: Jedrzej Jagielski <jedrzej.jagielski@intel.com>
Tested-by: Konrad Jankowski <konrad0.jankowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/intel/i40e/i40e.h             |    1 
 drivers/net/ethernet/intel/i40e/i40e_main.c        |   14 ----
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c |   59 +++++++++++++++++++++
 3 files changed, 61 insertions(+), 13 deletions(-)

--- a/drivers/net/ethernet/intel/i40e/i40e.h
+++ b/drivers/net/ethernet/intel/i40e/i40e.h
@@ -172,7 +172,6 @@ enum i40e_interrupt_policy {
 
 struct i40e_lump_tracking {
 	u16 num_entries;
-	u16 search_hint;
 	u16 list[0];
 #define I40E_PILE_VALID_BIT  0x8000
 #define I40E_IWARP_IRQ_PILE_ID  (I40E_PILE_VALID_BIT - 2)
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -195,10 +195,6 @@ int i40e_free_virt_mem_d(struct i40e_hw
  * @id: an owner id to stick on the items assigned
  *
  * Returns the base item index of the lump, or negative for error
- *
- * The search_hint trick and lack of advanced fit-finding only work
- * because we're highly likely to have all the same size lump requests.
- * Linear search time and any fragmentation should be minimal.
  **/
 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 			 u16 needed, u16 id)
@@ -213,8 +209,7 @@ static int i40e_get_lump(struct i40e_pf
 		return -EINVAL;
 	}
 
-	/* start the linear search with an imperfect hint */
-	i = pile->search_hint;
+	i = 0;
 	while (i < pile->num_entries) {
 		/* skip already allocated entries */
 		if (pile->list[i] & I40E_PILE_VALID_BIT) {
@@ -233,7 +228,6 @@ static int i40e_get_lump(struct i40e_pf
 			for (j = 0; j < needed; j++)
 				pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 			ret = i;
-			pile->search_hint = i + j;
 			break;
 		}
 
@@ -256,7 +250,7 @@ static int i40e_put_lump(struct i40e_lum
 {
 	int valid_id = (id | I40E_PILE_VALID_BIT);
 	int count = 0;
-	int i;
+	u16 i;
 
 	if (!pile || index >= pile->num_entries)
 		return -EINVAL;
@@ -268,8 +262,6 @@ static int i40e_put_lump(struct i40e_lum
 		count++;
 	}
 
-	if (count && index < pile->search_hint)
-		pile->search_hint = index;
 
 	return count;
 }
@@ -11321,7 +11313,6 @@ static int i40e_init_interrupt_scheme(st
 		return -ENOMEM;
 
 	pf->irq_pile->num_entries = vectors;
-	pf->irq_pile->search_hint = 0;
 
 	/* track first vector for misc interrupts, ignore return */
 	(void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
@@ -12124,7 +12115,6 @@ static int i40e_sw_init(struct i40e_pf *
 		goto sw_init_done;
 	}
 	pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
-	pf->qp_pile->search_hint = 0;
 
 	pf->tx_timeout_recovery_level = 1;
 
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -2564,6 +2564,59 @@ error_param:
 }
 
 /**
+ * i40e_check_enough_queue - find big enough queue number
+ * @vf: pointer to the VF info
+ * @needed: the number of items needed
+ *
+ * Returns the base item index of the queue, or negative for error
+ **/
+static int i40e_check_enough_queue(struct i40e_vf *vf, u16 needed)
+{
+	unsigned int  i, cur_queues, more, pool_size;
+	struct i40e_lump_tracking *pile;
+	struct i40e_pf *pf = vf->pf;
+	struct i40e_vsi *vsi;
+
+	vsi = pf->vsi[vf->lan_vsi_idx];
+	cur_queues = vsi->alloc_queue_pairs;
+
+	/* if current allocated queues are enough for need */
+	if (cur_queues >= needed)
+		return vsi->base_queue;
+
+	pile = pf->qp_pile;
+	if (cur_queues > 0) {
+		/* if the allocated queues are not zero
+		 * just check if there are enough queues for more
+		 * behind the allocated queues.
+		 */
+		more = needed - cur_queues;
+		for (i = vsi->base_queue + cur_queues;
+			i < pile->num_entries; i++) {
+			if (pile->list[i] & I40E_PILE_VALID_BIT)
+				break;
+
+			if (more-- == 1)
+				/* there is enough */
+				return vsi->base_queue;
+		}
+	}
+
+	pool_size = 0;
+	for (i = 0; i < pile->num_entries; i++) {
+		if (pile->list[i] & I40E_PILE_VALID_BIT) {
+			pool_size = 0;
+			continue;
+		}
+		if (needed <= ++pool_size)
+			/* there is enough */
+			return i;
+	}
+
+	return -ENOMEM;
+}
+
+/**
  * i40e_vc_request_queues_msg
  * @vf: pointer to the VF info
  * @msg: pointer to the msg buffer
@@ -2597,6 +2650,12 @@ static int i40e_vc_request_queues_msg(st
 			 req_pairs - cur_pairs,
 			 pf->queues_left);
 		vfres->num_queue_pairs = pf->queues_left + cur_pairs;
+	} else if (i40e_check_enough_queue(vf, req_pairs) < 0) {
+		dev_warn(&pf->pdev->dev,
+			 "VF %d requested %d more queues, but there is not enough for it.\n",
+			 vf->vf_id,
+			 req_pairs - cur_pairs);
+		vfres->num_queue_pairs = cur_pairs;
 	} else {
 		/* successful request */
 		vf->num_req_queues = req_pairs;

[PATCH 5.10 044/100] i40e: Fix queues reservation for XDP

[Greg Kroah-Hartman]

From: Sylwester Dziedziuch <sylwesterx.dziedziuch@intel.com>

commit 92947844b8beee988c0ce17082b705c2f75f0742 upstream.

When XDP was configured on a system with large number of CPUs
and X722 NIC there was a call trace with NULL pointer dereference.

i40e 0000:87:00.0: failed to get tracking for 256 queues for VSI 0 err -12
i40e 0000:87:00.0: setup of MAIN VSI failed

BUG: kernel NULL pointer dereference, address: 0000000000000000
RIP: 0010:i40e_xdp+0xea/0x1b0 [i40e]
Call Trace:
? i40e_reconfig_rss_queues+0x130/0x130 [i40e]
dev_xdp_install+0x61/0xe0
dev_xdp_attach+0x18a/0x4c0
dev_change_xdp_fd+0x1e6/0x220
do_setlink+0x616/0x1030
? ahci_port_stop+0x80/0x80
? ata_qc_issue+0x107/0x1e0
? lock_timer_base+0x61/0x80
? __mod_timer+0x202/0x380
rtnl_setlink+0xe5/0x170
? bpf_lsm_binder_transaction+0x10/0x10
? security_capable+0x36/0x50
rtnetlink_rcv_msg+0x121/0x350
? rtnl_calcit.isra.0+0x100/0x100
netlink_rcv_skb+0x50/0xf0
netlink_unicast+0x1d3/0x2a0
netlink_sendmsg+0x22a/0x440
sock_sendmsg+0x5e/0x60
__sys_sendto+0xf0/0x160
? __sys_getsockname+0x7e/0xc0
? _copy_from_user+0x3c/0x80
? __sys_setsockopt+0xc8/0x1a0
__x64_sys_sendto+0x20/0x30
do_syscall_64+0x33/0x40
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f83fa7a39e0

This was caused by PF queue pile fragmentation due to
flow director VSI queue being placed right after main VSI.
Because of this main VSI was not able to resize its
queue allocation for XDP resulting in no queues allocated
for main VSI when XDP was turned on.

Fix this by always allocating last queue in PF queue pile
for a flow director VSI.

Fixes: 41c445ff0f48 ("i40e: main driver core")
Fixes: 74608d17fe29 ("i40e: add support for XDP_TX action")
Signed-off-by: Sylwester Dziedziuch <sylwesterx.dziedziuch@intel.com>
Signed-off-by: Mateusz Palczewski <mateusz.palczewski@intel.com>
Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Tested-by: Kiran Bhandare <kiranx.bhandare@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/intel/i40e/i40e_main.c |   14 ++++++++++++++
 1 file changed, 14 insertions(+)

--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -209,6 +209,20 @@ static int i40e_get_lump(struct i40e_pf
 		return -EINVAL;
 	}
 
+	/* Allocate last queue in the pile for FDIR VSI queue
+	 * so it doesn't fragment the qp_pile
+	 */
+	if (pile == pf->qp_pile && pf->vsi[id]->type == I40E_VSI_FDIR) {
+		if (pile->list[pile->num_entries - 1] & I40E_PILE_VALID_BIT) {
+			dev_err(&pf->pdev->dev,
+				"Cannot allocate queue %d for I40E_VSI_FDIR\n",
+				pile->num_entries - 1);
+			return -ENOMEM;
+		}
+		pile->list[pile->num_entries - 1] = id | I40E_PILE_VALID_BIT;
+		return pile->num_entries - 1;
+	}
+
 	i = 0;
 	while (i < pile->num_entries) {
 		/* skip already allocated entries */

[PATCH 5.10 045/100] i40e: Fix for failed to init adminq while VF reset

[Greg Kroah-Hartman]

From: Karen Sornek <karen.sornek@intel.com>

commit 0f344c8129a5337dae50e31b817dd50a60ff238c upstream.

Fix for failed to init adminq: -53 while VF is resetting via MAC
address changing procedure.
Added sync module to avoid reading deadbeef value in reinit adminq
during software reset.
Without this patch it is possible to trigger VF reset procedure
during reinit adminq. This resulted in an incorrect reading of
value from the AQP registers and generated the -53 error.

Fixes: 5c3c48ac6bf5 ("i40e: implement virtual device interface")
Signed-off-by: Grzegorz Szczurek <grzegorzx.szczurek@intel.com>
Signed-off-by: Karen Sornek <karen.sornek@intel.com>
Tested-by: Konrad Jankowski <konrad0.jankowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/intel/i40e/i40e_register.h    |    3 +
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c |   44 ++++++++++++++++++++-
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h |    1 
 3 files changed, 46 insertions(+), 2 deletions(-)

--- a/drivers/net/ethernet/intel/i40e/i40e_register.h
+++ b/drivers/net/ethernet/intel/i40e/i40e_register.h
@@ -279,6 +279,9 @@
 #define I40E_VFINT_DYN_CTLN(_INTVF) (0x00024800 + ((_INTVF) * 4)) /* _i=0...511 */ /* Reset: VFR */
 #define I40E_VFINT_DYN_CTLN_CLEARPBA_SHIFT 1
 #define I40E_VFINT_DYN_CTLN_CLEARPBA_MASK I40E_MASK(0x1, I40E_VFINT_DYN_CTLN_CLEARPBA_SHIFT)
+#define I40E_VFINT_ICR0_ADMINQ_SHIFT 30
+#define I40E_VFINT_ICR0_ADMINQ_MASK I40E_MASK(0x1, I40E_VFINT_ICR0_ADMINQ_SHIFT)
+#define I40E_VFINT_ICR0_ENA(_VF) (0x0002C000 + ((_VF) * 4)) /* _i=0...127 */ /* Reset: CORER */
 #define I40E_VPINT_AEQCTL(_VF) (0x0002B800 + ((_VF) * 4)) /* _i=0...127 */ /* Reset: CORER */
 #define I40E_VPINT_AEQCTL_MSIX_INDX_SHIFT 0
 #define I40E_VPINT_AEQCTL_ITR_INDX_SHIFT 11
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -1324,6 +1324,32 @@ static i40e_status i40e_config_vf_promis
 }
 
 /**
+ * i40e_sync_vfr_reset
+ * @hw: pointer to hw struct
+ * @vf_id: VF identifier
+ *
+ * Before trigger hardware reset, we need to know if no other process has
+ * reserved the hardware for any reset operations. This check is done by
+ * examining the status of the RSTAT1 register used to signal the reset.
+ **/
+static int i40e_sync_vfr_reset(struct i40e_hw *hw, int vf_id)
+{
+	u32 reg;
+	int i;
+
+	for (i = 0; i < I40E_VFR_WAIT_COUNT; i++) {
+		reg = rd32(hw, I40E_VFINT_ICR0_ENA(vf_id)) &
+			   I40E_VFINT_ICR0_ADMINQ_MASK;
+		if (reg)
+			return 0;
+
+		usleep_range(100, 200);
+	}
+
+	return -EAGAIN;
+}
+
+/**
  * i40e_trigger_vf_reset
  * @vf: pointer to the VF structure
  * @flr: VFLR was issued or not
@@ -1337,9 +1363,11 @@ static void i40e_trigger_vf_reset(struct
 	struct i40e_pf *pf = vf->pf;
 	struct i40e_hw *hw = &pf->hw;
 	u32 reg, reg_idx, bit_idx;
+	bool vf_active;
+	u32 radq;
 
 	/* warn the VF */
-	clear_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
+	vf_active = test_and_clear_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
 
 	/* Disable VF's configuration API during reset. The flag is re-enabled
 	 * in i40e_alloc_vf_res(), when it's safe again to access VF's VSI.
@@ -1353,7 +1381,19 @@ static void i40e_trigger_vf_reset(struct
 	 * just need to clean up, so don't hit the VFRTRIG register.
 	 */
 	if (!flr) {
-		/* reset VF using VPGEN_VFRTRIG reg */
+		/* Sync VFR reset before trigger next one */
+		radq = rd32(hw, I40E_VFINT_ICR0_ENA(vf->vf_id)) &
+			    I40E_VFINT_ICR0_ADMINQ_MASK;
+		if (vf_active && !radq)
+			/* waiting for finish reset by virtual driver */
+			if (i40e_sync_vfr_reset(hw, vf->vf_id))
+				dev_info(&pf->pdev->dev,
+					 "Reset VF %d never finished\n",
+				vf->vf_id);
+
+		/* Reset VF using VPGEN_VFRTRIG reg. It is also setting
+		 * in progress state in rstat1 register.
+		 */
 		reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
 		reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
 		wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h
@@ -19,6 +19,7 @@
 #define I40E_MAX_VF_PROMISC_FLAGS	3
 
 #define I40E_VF_STATE_WAIT_COUNT	20
+#define I40E_VFR_WAIT_COUNT		100
 
 /* Various queue ctrls */
 enum i40e_queue_ctrl {

[PATCH 5.10 046/100] i40e: fix unsigned stat widths

[Greg Kroah-Hartman]

From: Joe Damato <jdamato@fastly.com>

commit 3b8428b84539c78fdc8006c17ebd25afd4722d51 upstream.

Change i40e_update_vsi_stats and struct i40e_vsi to use u64 fields to match
the width of the stats counters in struct i40e_rx_queue_stats.

Update debugfs code to use the correct format specifier for u64.

Fixes: 41c445ff0f48 ("i40e: main driver core")
Signed-off-by: Joe Damato <jdamato@fastly.com>
Reported-by: kernel test robot <lkp@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/intel/i40e/i40e.h         |    8 ++++----
 drivers/net/ethernet/intel/i40e/i40e_debugfs.c |    2 +-
 drivers/net/ethernet/intel/i40e/i40e_main.c    |    4 ++--
 3 files changed, 7 insertions(+), 7 deletions(-)

--- a/drivers/net/ethernet/intel/i40e/i40e.h
+++ b/drivers/net/ethernet/intel/i40e/i40e.h
@@ -754,12 +754,12 @@ struct i40e_vsi {
 	struct rtnl_link_stats64 net_stats_offsets;
 	struct i40e_eth_stats eth_stats;
 	struct i40e_eth_stats eth_stats_offsets;
-	u32 tx_restart;
-	u32 tx_busy;
+	u64 tx_restart;
+	u64 tx_busy;
 	u64 tx_linearize;
 	u64 tx_force_wb;
-	u32 rx_buf_failed;
-	u32 rx_page_failed;
+	u64 rx_buf_failed;
+	u64 rx_page_failed;
 
 	/* These are containers of ring pointers, allocated at run-time */
 	struct i40e_ring **rx_rings;
--- a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c
@@ -240,7 +240,7 @@ static void i40e_dbg_dump_vsi_seid(struc
 		 (unsigned long int)vsi->net_stats_offsets.rx_compressed,
 		 (unsigned long int)vsi->net_stats_offsets.tx_compressed);
 	dev_info(&pf->pdev->dev,
-		 "    tx_restart = %d, tx_busy = %d, rx_buf_failed = %d, rx_page_failed = %d\n",
+		 "    tx_restart = %llu, tx_busy = %llu, rx_buf_failed = %llu, rx_page_failed = %llu\n",
 		 vsi->tx_restart, vsi->tx_busy,
 		 vsi->rx_buf_failed, vsi->rx_page_failed);
 	rcu_read_lock();
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -777,9 +777,9 @@ static void i40e_update_vsi_stats(struct
 	struct rtnl_link_stats64 *ns;   /* netdev stats */
 	struct i40e_eth_stats *oes;
 	struct i40e_eth_stats *es;     /* device's eth stats */
-	u32 tx_restart, tx_busy;
+	u64 tx_restart, tx_busy;
 	struct i40e_ring *p;
-	u32 rx_page, rx_buf;
+	u64 rx_page, rx_buf;
 	u64 bytes, packets;
 	unsigned int start;
 	u64 tx_linearize;

[PATCH 5.10 047/100] usb: roles: fix include/linux/usb/role.h compile issue

[Greg Kroah-Hartman]

From: Linyu Yuan <quic_linyyuan@quicinc.com>

commit 945c37ed564770c78dfe6b9f08bed57a1b4e60ef upstream.

when CONFIG_USB_ROLE_SWITCH is not defined,
add usb_role_switch_find_by_fwnode() definition which return NULL.

Fixes: c6919d5e0cd1 ("usb: roles: Add usb_role_switch_find_by_fwnode()")
Signed-off-by: Linyu Yuan <quic_linyyuan@quicinc.com>
Link: https://lore.kernel.org/r/1641818608-25039-1-git-send-email-quic_linyyuan@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/linux/usb/role.h |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/include/linux/usb/role.h
+++ b/include/linux/usb/role.h
@@ -91,6 +91,12 @@ fwnode_usb_role_switch_get(struct fwnode
 static inline void usb_role_switch_put(struct usb_role_switch *sw) { }
 
 static inline struct usb_role_switch *
+usb_role_switch_find_by_fwnode(const struct fwnode_handle *fwnode)
+{
+	return NULL;
+}
+
+static inline struct usb_role_switch *
 usb_role_switch_register(struct device *parent,
 			 const struct usb_role_switch_desc *desc)
 {

[PATCH 5.10 048/100] rpmsg: char: Fix race between the release of rpmsg_ctrldev and cdev

[Greg Kroah-Hartman]

From: Sujit Kautkar <sujitka@chromium.org>

commit b7fb2dad571d1e21173c06cef0bced77b323990a upstream.

struct rpmsg_ctrldev contains a struct cdev. The current code frees
the rpmsg_ctrldev struct in rpmsg_ctrldev_release_device(), but the
cdev is a managed object, therefore its release is not predictable
and the rpmsg_ctrldev could be freed before the cdev is entirely
released, as in the backtrace below.

[   93.625603] ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x7c
[   93.636115] WARNING: CPU: 0 PID: 12 at lib/debugobjects.c:488 debug_print_object+0x13c/0x1b0
[   93.644799] Modules linked in: veth xt_cgroup xt_MASQUERADE rfcomm algif_hash algif_skcipher af_alg uinput ip6table_nat fuse uvcvideo videobuf2_vmalloc venus_enc venus_dec videobuf2_dma_contig hci_uart btandroid btqca snd_soc_rt5682_i2c bluetooth qcom_spmi_temp_alarm snd_soc_rt5682v
[   93.715175] CPU: 0 PID: 12 Comm: kworker/0:1 Tainted: G    B             5.4.163-lockdep #26
[   93.723855] Hardware name: Google Lazor (rev3 - 8) with LTE (DT)
[   93.730055] Workqueue: events kobject_delayed_cleanup
[   93.735271] pstate: 60c00009 (nZCv daif +PAN +UAO)
[   93.740216] pc : debug_print_object+0x13c/0x1b0
[   93.744890] lr : debug_print_object+0x13c/0x1b0
[   93.749555] sp : ffffffacf5bc7940
[   93.752978] x29: ffffffacf5bc7940 x28: dfffffd000000000
[   93.758448] x27: ffffffacdb11a800 x26: dfffffd000000000
[   93.763916] x25: ffffffd0734f856c x24: dfffffd000000000
[   93.769389] x23: 0000000000000000 x22: ffffffd0733c35b0
[   93.774860] x21: ffffffd0751994a0 x20: ffffffd075ec27c0
[   93.780338] x19: ffffffd075199100 x18: 00000000000276e0
[   93.785814] x17: 0000000000000000 x16: dfffffd000000000
[   93.791291] x15: ffffffffffffffff x14: 6e6968207473696c
[   93.796768] x13: 0000000000000000 x12: ffffffd075e2b000
[   93.802244] x11: 0000000000000001 x10: 0000000000000000
[   93.807723] x9 : d13400dff1921900 x8 : d13400dff1921900
[   93.813200] x7 : 0000000000000000 x6 : 0000000000000000
[   93.818676] x5 : 0000000000000080 x4 : 0000000000000000
[   93.824152] x3 : ffffffd0732a0fa4 x2 : 0000000000000001
[   93.829628] x1 : ffffffacf5bc7580 x0 : 0000000000000061
[   93.835104] Call trace:
[   93.837644]  debug_print_object+0x13c/0x1b0
[   93.841963]  __debug_check_no_obj_freed+0x25c/0x3c0
[   93.846987]  debug_check_no_obj_freed+0x18/0x20
[   93.851669]  slab_free_freelist_hook+0xbc/0x1e4
[   93.856346]  kfree+0xfc/0x2f4
[   93.859416]  rpmsg_ctrldev_release_device+0x78/0xb8
[   93.864445]  device_release+0x84/0x168
[   93.868310]  kobject_cleanup+0x12c/0x298
[   93.872356]  kobject_delayed_cleanup+0x10/0x18
[   93.876948]  process_one_work+0x578/0x92c
[   93.881086]  worker_thread+0x804/0xcf8
[   93.884963]  kthread+0x2a8/0x314
[   93.888303]  ret_from_fork+0x10/0x18

The cdev_device_add/del() API was created to address this issue (see
commit '233ed09d7fda ("chardev: add helper function to register char
devs with a struct device")'), use it instead of cdev add/del().

Fixes: c0cdc19f84a4 ("rpmsg: Driver for user space endpoint interface")
Signed-off-by: Sujit Kautkar <sujitka@chromium.org>
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220110104706.v6.1.Iaac908f3e3149a89190ce006ba166e2d3fd247a3@changeid
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/rpmsg/rpmsg_char.c |   11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

--- a/drivers/rpmsg/rpmsg_char.c
+++ b/drivers/rpmsg/rpmsg_char.c
@@ -458,7 +458,6 @@ static void rpmsg_ctrldev_release_device
 
 	ida_simple_remove(&rpmsg_ctrl_ida, dev->id);
 	ida_simple_remove(&rpmsg_minor_ida, MINOR(dev->devt));
-	cdev_del(&ctrldev->cdev);
 	kfree(ctrldev);
 }
 
@@ -493,19 +492,13 @@ static int rpmsg_chrdev_probe(struct rpm
 	dev->id = ret;
 	dev_set_name(&ctrldev->dev, "rpmsg_ctrl%d", ret);
 
-	ret = cdev_add(&ctrldev->cdev, dev->devt, 1);
+	ret = cdev_device_add(&ctrldev->cdev, &ctrldev->dev);
 	if (ret)
 		goto free_ctrl_ida;
 
 	/* We can now rely on the release function for cleanup */
 	dev->release = rpmsg_ctrldev_release_device;
 
-	ret = device_add(dev);
-	if (ret) {
-		dev_err(&rpdev->dev, "device_add failed: %d\n", ret);
-		put_device(dev);
-	}
-
 	dev_set_drvdata(&rpdev->dev, ctrldev);
 
 	return ret;
@@ -531,7 +524,7 @@ static void rpmsg_chrdev_remove(struct r
 	if (ret)
 		dev_warn(&rpdev->dev, "failed to nuke endpoints: %d\n", ret);
 
-	device_del(&ctrldev->dev);
+	cdev_device_del(&ctrldev->cdev, &ctrldev->dev);
 	put_device(&ctrldev->dev);
 }
 

[PATCH 5.10 049/100] rpmsg: char: Fix race between the release of rpmsg_eptdev and cdev

[Greg Kroah-Hartman]

From: Matthias Kaehlcke <mka@chromium.org>

commit 7a534ae89e34e9b51acb5a63dd0f88308178b46a upstream.

struct rpmsg_eptdev contains a struct cdev. The current code frees
the rpmsg_eptdev struct in rpmsg_eptdev_destroy(), but the cdev is
a managed object, therefore its release is not predictable and the
rpmsg_eptdev could be freed before the cdev is entirely released.

The cdev_device_add/del() API was created to address this issue
(see commit '233ed09d7fda ("chardev: add helper function to register
char devs with a struct device")'), use it instead of cdev add/del().

Fixes: c0cdc19f84a4 ("rpmsg: Driver for user space endpoint interface")
Suggested-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220110104706.v6.2.Idde68b05b88d4a2e6e54766c653f3a6d9e419ce6@changeid
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/rpmsg/rpmsg_char.c |   11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

--- a/drivers/rpmsg/rpmsg_char.c
+++ b/drivers/rpmsg/rpmsg_char.c
@@ -92,7 +92,7 @@ static int rpmsg_eptdev_destroy(struct d
 	/* wake up any blocked readers */
 	wake_up_interruptible(&eptdev->readq);
 
-	device_del(&eptdev->dev);
+	cdev_device_del(&eptdev->cdev, &eptdev->dev);
 	put_device(&eptdev->dev);
 
 	return 0;
@@ -332,7 +332,6 @@ static void rpmsg_eptdev_release_device(
 
 	ida_simple_remove(&rpmsg_ept_ida, dev->id);
 	ida_simple_remove(&rpmsg_minor_ida, MINOR(eptdev->dev.devt));
-	cdev_del(&eptdev->cdev);
 	kfree(eptdev);
 }
 
@@ -377,19 +376,13 @@ static int rpmsg_eptdev_create(struct rp
 	dev->id = ret;
 	dev_set_name(dev, "rpmsg%d", ret);
 
-	ret = cdev_add(&eptdev->cdev, dev->devt, 1);
+	ret = cdev_device_add(&eptdev->cdev, &eptdev->dev);
 	if (ret)
 		goto free_ept_ida;
 
 	/* We can now rely on the release function for cleanup */
 	dev->release = rpmsg_eptdev_release_device;
 
-	ret = device_add(dev);
-	if (ret) {
-		dev_err(dev, "device_add failed: %d\n", ret);
-		put_device(dev);
-	}
-
 	return ret;
 
 free_ept_ida:

[PATCH 5.10 050/100] scsi: bnx2fc: Flush destroy_work queue before calling bnx2fc_interface_put()

[Greg Kroah-Hartman]

From: John Meneghini <jmeneghi@redhat.com>

commit 847f9ea4c5186fdb7b84297e3eeed9e340e83fce upstream.

The bnx2fc_destroy() functions are removing the interface before calling
destroy_work. This results multiple WARNings from sysfs_remove_group() as
the controller rport device attributes are removed too early.

Replace the fcoe_port's destroy_work queue. It's not needed.

The problem is easily reproducible with the following steps.

Example:

  $ dmesg -w &
  $ systemctl enable --now fcoe
  $ fipvlan -s -c ens2f1
  $ fcoeadm -d ens2f1.802
  [  583.464488] host2: libfc: Link down on port (7500a1)
  [  583.472651] bnx2fc: 7500a1 - rport not created Yet!!
  [  583.490468] ------------[ cut here ]------------
  [  583.538725] sysfs group 'power' not found for kobject 'rport-2:0-0'
  [  583.568814] WARNING: CPU: 3 PID: 192 at fs/sysfs/group.c:279 sysfs_remove_group+0x6f/0x80
  [  583.607130] Modules linked in: dm_service_time 8021q garp mrp stp llc bnx2fc cnic uio rpcsec_gss_krb5 auth_rpcgss nfsv4 ...
  [  583.942994] CPU: 3 PID: 192 Comm: kworker/3:2 Kdump: loaded Not tainted 5.14.0-39.el9.x86_64 #1
  [  583.984105] Hardware name: HP ProLiant DL120 G7, BIOS J01 07/01/2013
  [  584.016535] Workqueue: fc_wq_2 fc_rport_final_delete [scsi_transport_fc]
  [  584.050691] RIP: 0010:sysfs_remove_group+0x6f/0x80
  [  584.074725] Code: ff 5b 48 89 ef 5d 41 5c e9 ee c0 ff ff 48 89 ef e8 f6 b8 ff ff eb d1 49 8b 14 24 48 8b 33 48 c7 c7 ...
  [  584.162586] RSP: 0018:ffffb567c15afdc0 EFLAGS: 00010282
  [  584.188225] RAX: 0000000000000000 RBX: ffffffff8eec4220 RCX: 0000000000000000
  [  584.221053] RDX: ffff8c1586ce84c0 RSI: ffff8c1586cd7cc0 RDI: ffff8c1586cd7cc0
  [  584.255089] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffb567c15afc00
  [  584.287954] R10: ffffb567c15afbf8 R11: ffffffff8fbe7f28 R12: ffff8c1486326400
  [  584.322356] R13: ffff8c1486326480 R14: ffff8c1483a4a000 R15: 0000000000000004
  [  584.355379] FS:  0000000000000000(0000) GS:ffff8c1586cc0000(0000) knlGS:0000000000000000
  [  584.394419] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  [  584.421123] CR2: 00007fe95a6f7840 CR3: 0000000107674002 CR4: 00000000000606e0
  [  584.454888] Call Trace:
  [  584.466108]  device_del+0xb2/0x3e0
  [  584.481701]  device_unregister+0x13/0x60
  [  584.501306]  bsg_unregister_queue+0x5b/0x80
  [  584.522029]  bsg_remove_queue+0x1c/0x40
  [  584.541884]  fc_rport_final_delete+0xf3/0x1d0 [scsi_transport_fc]
  [  584.573823]  process_one_work+0x1e3/0x3b0
  [  584.592396]  worker_thread+0x50/0x3b0
  [  584.609256]  ? rescuer_thread+0x370/0x370
  [  584.628877]  kthread+0x149/0x170
  [  584.643673]  ? set_kthread_struct+0x40/0x40
  [  584.662909]  ret_from_fork+0x22/0x30
  [  584.680002] ---[ end trace 53575ecefa942ece ]---

Link: https://lore.kernel.org/r/20220115040044.1013475-1-jmeneghi@redhat.com
Fixes: 0cbf32e1681d ("[SCSI] bnx2fc: Avoid calling bnx2fc_if_destroy with unnecessary locks")
Tested-by: Guangwu Zhang <guazhang@redhat.com>
Co-developed-by: Maurizio Lombardi <mlombard@redhat.com>
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Signed-off-by: John Meneghini <jmeneghi@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/scsi/bnx2fc/bnx2fc_fcoe.c |   20 +++++---------------
 1 file changed, 5 insertions(+), 15 deletions(-)

--- a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c
+++ b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c
@@ -80,7 +80,7 @@ static int bnx2fc_bind_pcidev(struct bnx
 static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
 static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface,
 				  struct device *parent, int npiv);
-static void bnx2fc_destroy_work(struct work_struct *work);
+static void bnx2fc_port_destroy(struct fcoe_port *port);
 
 static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
 static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device
@@ -905,9 +905,6 @@ static void bnx2fc_indicate_netevent(voi
 				__bnx2fc_destroy(interface);
 		}
 		mutex_unlock(&bnx2fc_dev_lock);
-
-		/* Ensure ALL destroy work has been completed before return */
-		flush_workqueue(bnx2fc_wq);
 		return;
 
 	default:
@@ -1213,8 +1210,8 @@ static int bnx2fc_vport_destroy(struct f
 	mutex_unlock(&n_port->lp_mutex);
 	bnx2fc_free_vport(interface->hba, port->lport);
 	bnx2fc_port_shutdown(port->lport);
+	bnx2fc_port_destroy(port);
 	bnx2fc_interface_put(interface);
-	queue_work(bnx2fc_wq, &port->destroy_work);
 	return 0;
 }
 
@@ -1523,7 +1520,6 @@ static struct fc_lport *bnx2fc_if_create
 	port->lport = lport;
 	port->priv = interface;
 	port->get_netdev = bnx2fc_netdev;
-	INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
 
 	/* Configure fcoe_port */
 	rc = bnx2fc_lport_config(lport);
@@ -1651,8 +1647,8 @@ static void __bnx2fc_destroy(struct bnx2
 	bnx2fc_interface_cleanup(interface);
 	bnx2fc_stop(interface);
 	list_del(&interface->list);
+	bnx2fc_port_destroy(port);
 	bnx2fc_interface_put(interface);
-	queue_work(bnx2fc_wq, &port->destroy_work);
 }
 
 /**
@@ -1692,15 +1688,12 @@ netdev_err:
 	return rc;
 }
 
-static void bnx2fc_destroy_work(struct work_struct *work)
+static void bnx2fc_port_destroy(struct fcoe_port *port)
 {
-	struct fcoe_port *port;
 	struct fc_lport *lport;
 
-	port = container_of(work, struct fcoe_port, destroy_work);
 	lport = port->lport;
-
-	BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
+	BNX2FC_HBA_DBG(lport, "Entered %s, destroying lport %p\n", __func__, lport);
 
 	bnx2fc_if_destroy(lport);
 }
@@ -2554,9 +2547,6 @@ static void bnx2fc_ulp_exit(struct cnic_
 			__bnx2fc_destroy(interface);
 	mutex_unlock(&bnx2fc_dev_lock);
 
-	/* Ensure ALL destroy work has been completed before return */
-	flush_workqueue(bnx2fc_wq);
-
 	bnx2fc_ulp_stop(hba);
 	/* unregister cnic device */
 	if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))

[PATCH 5.10 051/100] ipv6_tunnel: Rate limit warning messages

[Greg Kroah-Hartman]

From: Ido Schimmel <idosch@nvidia.com>

commit 6cee105e7f2ced596373951d9ea08dacc3883c68 upstream.

The warning messages can be invoked from the data path for every packet
transmitted through an ip6gre netdev, leading to high CPU utilization.

Fix that by rate limiting the messages.

Fixes: 09c6bbf090ec ("[IPV6]: Do mandatory IPv6 tunnel endpoint checks in realtime")
Reported-by: Maksym Yaremchuk <maksymy@nvidia.com>
Tested-by: Maksym Yaremchuk <maksymy@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/ipv6/ip6_tunnel.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -1066,14 +1066,14 @@ int ip6_tnl_xmit_ctl(struct ip6_tnl *t,
 
 		if (unlikely(!ipv6_chk_addr_and_flags(net, laddr, ldev, false,
 						      0, IFA_F_TENTATIVE)))
-			pr_warn("%s xmit: Local address not yet configured!\n",
-				p->name);
+			pr_warn_ratelimited("%s xmit: Local address not yet configured!\n",
+					    p->name);
 		else if (!(p->flags & IP6_TNL_F_ALLOW_LOCAL_REMOTE) &&
 			 !ipv6_addr_is_multicast(raddr) &&
 			 unlikely(ipv6_chk_addr_and_flags(net, raddr, ldev,
 							  true, 0, IFA_F_TENTATIVE)))
-			pr_warn("%s xmit: Routing loop! Remote address found on this node!\n",
-				p->name);
+			pr_warn_ratelimited("%s xmit: Routing loop! Remote address found on this node!\n",
+					    p->name);
 		else
 			ret = 1;
 		rcu_read_unlock();

[PATCH 5.10 052/100] ARM: 9170/1: fix panic when kasan and kprobe are enabled

[Greg Kroah-Hartman]

From: sparkhuang <huangshaobo6@huawei.com>

commit 8b59b0a53c840921b625378f137e88adfa87647e upstream.

arm32 uses software to simulate the instruction replaced
by kprobe. some instructions may be simulated by constructing
assembly functions. therefore, before executing instruction
simulation, it is necessary to construct assembly function
execution environment in C language through binding registers.
after kasan is enabled, the register binding relationship will
be destroyed, resulting in instruction simulation errors and
causing kernel panic.

the kprobe emulate instruction function is distributed in three
files: actions-common.c actions-arm.c actions-thumb.c, so disable
KASAN when compiling these files.

for example, use kprobe insert on cap_capable+20 after kasan
enabled, the cap_capable assembly code is as follows:
<cap_capable>:
e92d47f0	push	{r4, r5, r6, r7, r8, r9, sl, lr}
e1a05000	mov	r5, r0
e280006c	add	r0, r0, #108    ; 0x6c
e1a04001	mov	r4, r1
e1a06002	mov	r6, r2
e59fa090	ldr	sl, [pc, #144]  ;
ebfc7bf8	bl	c03aa4b4 <__asan_load4>
e595706c	ldr	r7, [r5, #108]  ; 0x6c
e2859014	add	r9, r5, #20
......
The emulate_ldr assembly code after enabling kasan is as follows:
c06f1384 <emulate_ldr>:
e92d47f0	push	{r4, r5, r6, r7, r8, r9, sl, lr}
e282803c	add	r8, r2, #60     ; 0x3c
e1a05000	mov	r5, r0
e7e37855	ubfx	r7, r5, #16, #4
e1a00008	mov	r0, r8
e1a09001	mov	r9, r1
e1a04002	mov	r4, r2
ebf35462	bl	c03c6530 <__asan_load4>
e357000f	cmp	r7, #15
e7e36655	ubfx	r6, r5, #12, #4
e205a00f	and	sl, r5, #15
0a000001	beq	c06f13bc <emulate_ldr+0x38>
e0840107	add	r0, r4, r7, lsl #2
ebf3545c	bl	c03c6530 <__asan_load4>
e084010a	add	r0, r4, sl, lsl #2
ebf3545a	bl	c03c6530 <__asan_load4>
e2890010	add	r0, r9, #16
ebf35458	bl	c03c6530 <__asan_load4>
e5990010	ldr	r0, [r9, #16]
e12fff30	blx	r0
e356000f	cm	r6, #15
1a000014	bne	c06f1430 <emulate_ldr+0xac>
e1a06000	mov	r6, r0
e2840040	add	r0, r4, #64     ; 0x40
......

when running in emulate_ldr to simulate the ldr instruction, panic
occurred, and the log is as follows:
Unable to handle kernel NULL pointer dereference at virtual address
00000090
pgd = ecb46400
[00000090] *pgd=2e0fa003, *pmd=00000000
Internal error: Oops: 206 [#1] SMP ARM
PC is at cap_capable+0x14/0xb0
LR is at emulate_ldr+0x50/0xc0
psr: 600d0293 sp : ecd63af8  ip : 00000004  fp : c0a7c30c
r10: 00000000  r9 : c30897f4  r8 : ecd63cd4
r7 : 0000000f  r6 : 0000000a  r5 : e59fa090  r4 : ecd63c98
r3 : c06ae294  r2 : 00000000  r1 : b7611300  r0 : bf4ec008
Flags: nZCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 32c5387d  Table: 2d546400  DAC: 55555555
Process bash (pid: 1643, stack limit = 0xecd60190)
(cap_capable) from (kprobe_handler+0x218/0x340)
(kprobe_handler) from (kprobe_trap_handler+0x24/0x48)
(kprobe_trap_handler) from (do_undefinstr+0x13c/0x364)
(do_undefinstr) from (__und_svc_finish+0x0/0x30)
(__und_svc_finish) from (cap_capable+0x18/0xb0)
(cap_capable) from (cap_vm_enough_memory+0x38/0x48)
(cap_vm_enough_memory) from
(security_vm_enough_memory_mm+0x48/0x6c)
(security_vm_enough_memory_mm) from
(copy_process.constprop.5+0x16b4/0x25c8)
(copy_process.constprop.5) from (_do_fork+0xe8/0x55c)
(_do_fork) from (SyS_clone+0x1c/0x24)
(SyS_clone) from (__sys_trace_return+0x0/0x10)
Code: 0050a0e1 6c0080e2 0140a0e1 0260a0e1 (f801f0e7)

Fixes: 35aa1df43283 ("ARM kprobes: instruction single-stepping support")
Fixes: 421015713b30 ("ARM: 9017/2: Enable KASan for ARM")
Signed-off-by: huangshaobo <huangshaobo6@huawei.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm/probes/kprobes/Makefile |    3 +++
 1 file changed, 3 insertions(+)

--- a/arch/arm/probes/kprobes/Makefile
+++ b/arch/arm/probes/kprobes/Makefile
@@ -1,4 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
+KASAN_SANITIZE_actions-common.o := n
+KASAN_SANITIZE_actions-arm.o := n
+KASAN_SANITIZE_actions-thumb.o := n
 obj-$(CONFIG_KPROBES)		+= core.o actions-common.o checkers-common.o
 obj-$(CONFIG_ARM_KPROBES_TEST)	+= test-kprobes.o
 test-kprobes-objs		:= test-core.o

[PATCH 5.10 053/100] net: fix information leakage in /proc/net/ptype

[Greg Kroah-Hartman]

From: Congyu Liu <liu3101@purdue.edu>

commit 47934e06b65637c88a762d9c98329ae6e3238888 upstream.

In one net namespace, after creating a packet socket without binding
it to a device, users in other net namespaces can observe the new
`packet_type` added by this packet socket by reading `/proc/net/ptype`
file. This is minor information leakage as packet socket is
namespace aware.

Add a net pointer in `packet_type` to keep the net namespace of
of corresponding packet socket. In `ptype_seq_show`, this net pointer
must be checked when it is not NULL.

Fixes: 2feb27dbe00c ("[NETNS]: Minor information leak via /proc/net/ptype file.")
Signed-off-by: Congyu Liu <liu3101@purdue.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/linux/netdevice.h |    1 +
 net/core/net-procfs.c     |    3 ++-
 net/packet/af_packet.c    |    2 ++
 3 files changed, 5 insertions(+), 1 deletion(-)

--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2543,6 +2543,7 @@ struct packet_type {
 					      struct net_device *);
 	bool			(*id_match)(struct packet_type *ptype,
 					    struct sock *sk);
+	struct net		*af_packet_net;
 	void			*af_packet_priv;
 	struct list_head	list;
 };
--- a/net/core/net-procfs.c
+++ b/net/core/net-procfs.c
@@ -263,7 +263,8 @@ static int ptype_seq_show(struct seq_fil
 
 	if (v == SEQ_START_TOKEN)
 		seq_puts(seq, "Type Device      Function\n");
-	else if (pt->dev == NULL || dev_net(pt->dev) == seq_file_net(seq)) {
+	else if ((!pt->af_packet_net || net_eq(pt->af_packet_net, seq_file_net(seq))) &&
+		 (!pt->dev || net_eq(dev_net(pt->dev), seq_file_net(seq)))) {
 		if (pt->type == htons(ETH_P_ALL))
 			seq_puts(seq, "ALL ");
 		else
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1735,6 +1735,7 @@ static int fanout_add(struct sock *sk, s
 		match->prot_hook.dev = po->prot_hook.dev;
 		match->prot_hook.func = packet_rcv_fanout;
 		match->prot_hook.af_packet_priv = match;
+		match->prot_hook.af_packet_net = read_pnet(&match->net);
 		match->prot_hook.id_match = match_fanout_group;
 		match->max_num_members = args->max_num_members;
 		list_add(&match->list, &fanout_list);
@@ -3323,6 +3324,7 @@ static int packet_create(struct net *net
 		po->prot_hook.func = packet_rcv_spkt;
 
 	po->prot_hook.af_packet_priv = sk;
+	po->prot_hook.af_packet_net = sock_net(sk);
 
 	if (proto) {
 		po->prot_hook.type = proto;

[PATCH 5.10 054/100] hwmon: (lm90) Mark alert as broken for MAX6646/6647/6649

[Greg Kroah-Hartman]

From: Guenter Roeck <linux@roeck-us.net>

commit f614629f9c1080dcc844a8430e3fb4c37ebbf05d upstream.

Experiments with MAX6646 and MAX6648 show that the alert function of those
chips is broken, similar to other chips supported by the lm90 driver.
Mark it accordingly.

Fixes: 4667bcb8d8fc ("hwmon: (lm90) Introduce chip parameter structure")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/hwmon/lm90.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -394,7 +394,7 @@ static const struct lm90_params lm90_par
 		.max_convrate = 9,
 	},
 	[max6646] = {
-		.flags = LM90_HAVE_CRIT,
+		.flags = LM90_HAVE_CRIT | LM90_HAVE_BROKEN_ALERT,
 		.alert_alarms = 0x7c,
 		.max_convrate = 6,
 		.reg_local_ext = MAX6657_REG_R_LOCAL_TEMPL,

[PATCH 5.10 055/100] hwmon: (lm90) Mark alert as broken for MAX6680

[Greg Kroah-Hartman]

From: Guenter Roeck <linux@roeck-us.net>

commit 94746b0ba479743355e0d3cc1cb9cfe3011fb8be upstream.

Experiments with MAX6680 and MAX6681 show that the alert function of those
chips is broken, similar to other chips supported by the lm90 driver.
Mark it accordingly.

Fixes: 4667bcb8d8fc ("hwmon: (lm90) Introduce chip parameter structure")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hwmon/lm90.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -418,7 +418,7 @@ static const struct lm90_params lm90_par
 	},
 	[max6680] = {
 		.flags = LM90_HAVE_OFFSET | LM90_HAVE_CRIT
-		  | LM90_HAVE_CRIT_ALRM_SWP,
+		  | LM90_HAVE_CRIT_ALRM_SWP | LM90_HAVE_BROKEN_ALERT,
 		.alert_alarms = 0x7c,
 		.max_convrate = 7,
 	},

[PATCH 5.10 056/100] ping: fix the sk_bound_dev_if match in ping_lookup

[Greg Kroah-Hartman]

From: Xin Long <lucien.xin@gmail.com>

commit 2afc3b5a31f9edf3ef0f374f5d70610c79c93a42 upstream.

When 'ping' changes to use PING socket instead of RAW socket by:

   # sysctl -w net.ipv4.ping_group_range="0 100"

the selftests 'router_broadcast.sh' will fail, as such command

  # ip vrf exec vrf-h1 ping -I veth0 198.51.100.255 -b

can't receive the response skb by the PING socket. It's caused by mismatch
of sk_bound_dev_if and dif in ping_rcv() when looking up the PING socket,
as dif is vrf-h1 if dif's master was set to vrf-h1.

This patch is to fix this regression by also checking the sk_bound_dev_if
against sdif so that the packets can stil be received even if the socket
is not bound to the vrf device but to the real iif.

Fixes: c319b4d76b9e ("net: ipv4: add IPPROTO_ICMP socket kind")
Reported-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/ipv4/ping.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/net/ipv4/ping.c
+++ b/net/ipv4/ping.c
@@ -220,7 +220,8 @@ static struct sock *ping_lookup(struct n
 			continue;
 		}
 
-		if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif)
+		if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif &&
+		    sk->sk_bound_dev_if != inet_sdif(skb))
 			continue;
 
 		sock_hold(sk);

[PATCH 5.10 057/100] ipv4: avoid using shared IP generator for connected sockets

[Greg Kroah-Hartman]

From: Eric Dumazet <edumazet@google.com>

commit 23f57406b82de51809d5812afd96f210f8b627f3 upstream.

ip_select_ident_segs() has been very conservative about using
the connected socket private generator only for packets with IP_DF
set, claiming it was needed for some VJ compression implementations.

As mentioned in this referenced document, this can be abused.
(Ref: Off-Path TCP Exploits of the Mixed IPID Assignment)

Before switching to pure random IPID generation and possibly hurt
some workloads, lets use the private inet socket generator.

Not only this will remove one vulnerability, this will also
improve performance of TCP flows using pmtudisc==IP_PMTUDISC_DONT

Fixes: 73f156a6e8c1 ("inetpeer: get rid of ip_id_count")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Reported-by: Ray Che <xijiache@gmail.com>
Cc: Willy Tarreau <w@1wt.eu>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/net/ip.h |   21 ++++++++++-----------
 1 file changed, 10 insertions(+), 11 deletions(-)

--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -506,19 +506,18 @@ static inline void ip_select_ident_segs(
 {
 	struct iphdr *iph = ip_hdr(skb);
 
+	/* We had many attacks based on IPID, use the private
+	 * generator as much as we can.
+	 */
+	if (sk && inet_sk(sk)->inet_daddr) {
+		iph->id = htons(inet_sk(sk)->inet_id);
+		inet_sk(sk)->inet_id += segs;
+		return;
+	}
 	if ((iph->frag_off & htons(IP_DF)) && !skb->ignore_df) {
-		/* This is only to work around buggy Windows95/2000
-		 * VJ compression implementations.  If the ID field
-		 * does not change, they drop every other packet in
-		 * a TCP stream using header compression.
-		 */
-		if (sk && inet_sk(sk)->inet_daddr) {
-			iph->id = htons(inet_sk(sk)->inet_id);
-			inet_sk(sk)->inet_id += segs;
-		} else {
-			iph->id = 0;
-		}
+		iph->id = 0;
 	} else {
+		/* Unfortunately we need the big hammer to get a suitable IPID */
 		__ip_select_ident(net, iph, segs);
 	}
 }

[PATCH 5.10 058/100] hwmon: (lm90) Reduce maximum conversion rate for G781

[Greg Kroah-Hartman]

From: Guenter Roeck <linux@roeck-us.net>

[ Upstream commit a66c5ed539277b9f2363bbace0dba88b85b36c26 ]

According to its datasheet, G781 supports a maximum conversion rate value
of 8 (62.5 ms). However, chips labeled G781 and G780 were found to only
support a maximum conversion rate value of 7 (125 ms). On the other side,
chips labeled G781-1 and G784 were found to support a conversion rate value
of 8. There is no known means to distinguish G780 from G781 or G784; all
chips report the same manufacturer ID and chip revision.
Setting the conversion rate register value to 8 on chips not supporting
it causes unexpected behavior since the real conversion rate is set to 0
(16 seconds) if a value of 8 is written into the conversion rate register.
Limit the conversion rate register value to 7 for all G78x chips to avoid
the problem.

Fixes: ae544f64cc7b ("hwmon: (lm90) Add support for GMT G781")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hwmon/lm90.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -373,7 +373,7 @@ static const struct lm90_params lm90_par
 		.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
 		  | LM90_HAVE_BROKEN_ALERT | LM90_HAVE_CRIT,
 		.alert_alarms = 0x7c,
-		.max_convrate = 8,
+		.max_convrate = 7,
 	},
 	[lm86] = {
 		.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT

[PATCH 5.10 059/100] NFSv4: Handle case where the lookup of a directory fails

[Greg Kroah-Hartman]

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

commit ac795161c93699d600db16c1a8cc23a65a1eceaf upstream.

If the application sets the O_DIRECTORY flag, and tries to open a
regular file, nfs_atomic_open() will punt to doing a regular lookup.
If the server then returns a regular file, we will happily return a
file descriptor with uninitialised open state.

The fix is to return the expected ENOTDIR error in these cases.

Reported-by: Lyu Tao <tao.lyu@epfl.ch>
Fixes: 0dd2b474d0b6 ("nfs: implement i_op->atomic_open()")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/nfs/dir.c |   13 +++++++++++++
 1 file changed, 13 insertions(+)

--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1777,6 +1777,19 @@ out:
 
 no_open:
 	res = nfs_lookup(dir, dentry, lookup_flags);
+	if (!res) {
+		inode = d_inode(dentry);
+		if ((lookup_flags & LOOKUP_DIRECTORY) && inode &&
+		    !S_ISDIR(inode->i_mode))
+			res = ERR_PTR(-ENOTDIR);
+	} else if (!IS_ERR(res)) {
+		inode = d_inode(res);
+		if ((lookup_flags & LOOKUP_DIRECTORY) && inode &&
+		    !S_ISDIR(inode->i_mode)) {
+			dput(res);
+			res = ERR_PTR(-ENOTDIR);
+		}
+	}
 	if (switched) {
 		d_lookup_done(dentry);
 		if (!res)

[PATCH 5.10 060/100] NFSv4: nfs_atomic_open() can race when looking up a non-regular file

[Greg Kroah-Hartman]

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

commit 1751fc1db36f6f411709e143d5393f92d12137a9 upstream.

If the file type changes back to being a regular file on the server
between the failed OPEN and our LOOKUP, then we need to re-run the OPEN.

Fixes: 0dd2b474d0b6 ("nfs: implement i_op->atomic_open()")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/nfs/dir.c |    5 +++++
 1 file changed, 5 insertions(+)

--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1782,12 +1782,17 @@ no_open:
 		if ((lookup_flags & LOOKUP_DIRECTORY) && inode &&
 		    !S_ISDIR(inode->i_mode))
 			res = ERR_PTR(-ENOTDIR);
+		else if (inode && S_ISREG(inode->i_mode))
+			res = ERR_PTR(-EOPENSTALE);
 	} else if (!IS_ERR(res)) {
 		inode = d_inode(res);
 		if ((lookup_flags & LOOKUP_DIRECTORY) && inode &&
 		    !S_ISDIR(inode->i_mode)) {
 			dput(res);
 			res = ERR_PTR(-ENOTDIR);
+		} else if (inode && S_ISREG(inode->i_mode)) {
+			dput(res);
+			res = ERR_PTR(-EOPENSTALE);
 		}
 	}
 	if (switched) {

[PATCH 5.10 061/100] net-procfs: show net devices bound packet types

[Greg Kroah-Hartman]

From: Jianguo Wu <wujianguo@chinatelecom.cn>

commit 1d10f8a1f40b965d449e8f2d5ed7b96a7c138b77 upstream.

After commit:7866a621043f ("dev: add per net_device packet type chains"),
we can not get packet types that are bound to a specified net device by
/proc/net/ptype, this patch fix the regression.

Run "tcpdump -i ens192 udp -nns0" Before and after apply this patch:

Before:
  [root@localhost ~]# cat /proc/net/ptype
  Type Device      Function
  0800          ip_rcv
  0806          arp_rcv
  86dd          ipv6_rcv

After:
  [root@localhost ~]# cat /proc/net/ptype
  Type Device      Function
  ALL  ens192   tpacket_rcv
  0800          ip_rcv
  0806          arp_rcv
  86dd          ipv6_rcv

v1 -> v2:
  - fix the regression rather than adding new /proc API as
    suggested by Stephen Hemminger.

Fixes: 7866a621043f ("dev: add per net_device packet type chains")
Signed-off-by: Jianguo Wu <wujianguo@chinatelecom.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/core/net-procfs.c |   35 ++++++++++++++++++++++++++++++++---
 1 file changed, 32 insertions(+), 3 deletions(-)

--- a/net/core/net-procfs.c
+++ b/net/core/net-procfs.c
@@ -193,12 +193,23 @@ static const struct seq_operations softn
 	.show  = softnet_seq_show,
 };
 
-static void *ptype_get_idx(loff_t pos)
+static void *ptype_get_idx(struct seq_file *seq, loff_t pos)
 {
+	struct list_head *ptype_list = NULL;
 	struct packet_type *pt = NULL;
+	struct net_device *dev;
 	loff_t i = 0;
 	int t;
 
+	for_each_netdev_rcu(seq_file_net(seq), dev) {
+		ptype_list = &dev->ptype_all;
+		list_for_each_entry_rcu(pt, ptype_list, list) {
+			if (i == pos)
+				return pt;
+			++i;
+		}
+	}
+
 	list_for_each_entry_rcu(pt, &ptype_all, list) {
 		if (i == pos)
 			return pt;
@@ -219,22 +230,40 @@ static void *ptype_seq_start(struct seq_
 	__acquires(RCU)
 {
 	rcu_read_lock();
-	return *pos ? ptype_get_idx(*pos - 1) : SEQ_START_TOKEN;
+	return *pos ? ptype_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
 }
 
 static void *ptype_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 {
+	struct net_device *dev;
 	struct packet_type *pt;
 	struct list_head *nxt;
 	int hash;
 
 	++*pos;
 	if (v == SEQ_START_TOKEN)
-		return ptype_get_idx(0);
+		return ptype_get_idx(seq, 0);
 
 	pt = v;
 	nxt = pt->list.next;
+	if (pt->dev) {
+		if (nxt != &pt->dev->ptype_all)
+			goto found;
+
+		dev = pt->dev;
+		for_each_netdev_continue_rcu(seq_file_net(seq), dev) {
+			if (!list_empty(&dev->ptype_all)) {
+				nxt = dev->ptype_all.next;
+				goto found;
+			}
+		}
+
+		nxt = ptype_all.next;
+		goto ptype_all;
+	}
+
 	if (pt->type == htons(ETH_P_ALL)) {
+ptype_all:
 		if (nxt != &ptype_all)
 			goto found;
 		hash = 0;

[PATCH 5.10 062/100] drm/msm: Fix wrong size calculation

[Greg Kroah-Hartman]

From: Xianting Tian <xianting.tian@linux.alibaba.com>

commit 0a727b459ee39bd4c5ced19d6024258ac87b6b2e upstream.

For example, memory-region in .dts as below,
	reg = <0x0 0x50000000 0x0 0x20000000>

We can get below values,
struct resource r;
r.start = 0x50000000;
r.end	= 0x6fffffff;

So the size should be:
size = r.end - r.start + 1 = 0x20000000

Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
Fixes: 072f1f9168ed ("drm/msm: add support for "stolen" mem")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20220112123334.749776-1-xianting.tian@linux.alibaba.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/msm/msm_drv.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -350,7 +350,7 @@ static int msm_init_vram(struct drm_devi
 		of_node_put(node);
 		if (ret)
 			return ret;
-		size = r.end - r.start;
+		size = r.end - r.start + 1;
 		DRM_INFO("using VRAM carveout: %lx@%pa\n", size, &r.start);
 
 		/* if we have no IOMMU, then we need to use carveout allocator.

[PATCH 5.10 063/100] drm/msm/dsi: Fix missing put_device() call in dsi_get_phy

[Greg Kroah-Hartman]

From: Miaoqian Lin <linmq006@gmail.com>

commit c04c3148ca12227d92f91b355b4538cc333c9922 upstream.

If of_find_device_by_node() succeeds, dsi_get_phy() doesn't
a corresponding put_device(). Thus add put_device() to fix the exception
handling.

Fixes: ec31abf ("drm/msm/dsi: Separate PHY to another platform device")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20211230070943.18116-1-linmq006@gmail.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/msm/dsi/dsi.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/msm/dsi/dsi.c
+++ b/drivers/gpu/drm/msm/dsi/dsi.c
@@ -33,7 +33,12 @@ static int dsi_get_phy(struct msm_dsi *m
 
 	of_node_put(phy_node);
 
-	if (!phy_pdev || !msm_dsi->phy) {
+	if (!phy_pdev) {
+		DRM_DEV_ERROR(&pdev->dev, "%s: phy driver is not ready\n", __func__);
+		return -EPROBE_DEFER;
+	}
+	if (!msm_dsi->phy) {
+		put_device(&phy_pdev->dev);
 		DRM_DEV_ERROR(&pdev->dev, "%s: phy driver is not ready\n", __func__);
 		return -EPROBE_DEFER;
 	}

[PATCH 5.10 064/100] drm/msm/dsi: invalid parameter check in msm_dsi_phy_enable

[Greg Kroah-Hartman]

From: José Expósito <jose.exposito89@gmail.com>

commit 5e761a2287234bc402ba7ef07129f5103bcd775c upstream.

The function performs a check on the "phy" input parameter, however, it
is used before the check.

Initialize the "dev" variable after the sanity check to avoid a possible
NULL pointer dereference.

Fixes: 5c8290284402b ("drm/msm/dsi: Split PHY drivers to separate files")
Addresses-Coverity-ID: 1493860 ("Null pointer dereference")
Signed-off-by: José Expósito <jose.exposito89@gmail.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20220116181844.7400-1-jose.exposito89@gmail.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/msm/dsi/phy/dsi_phy.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
@@ -769,12 +769,14 @@ void __exit msm_dsi_phy_driver_unregiste
 int msm_dsi_phy_enable(struct msm_dsi_phy *phy, int src_pll_id,
 			struct msm_dsi_phy_clk_request *clk_req)
 {
-	struct device *dev = &phy->pdev->dev;
+	struct device *dev;
 	int ret;
 
 	if (!phy || !phy->cfg->ops.enable)
 		return -EINVAL;
 
+	dev = &phy->pdev->dev;
+
 	ret = dsi_phy_enable_resource(phy);
 	if (ret) {
 		DRM_DEV_ERROR(dev, "%s: resource enable failed, %d\n",

[PATCH 5.10 065/100] ipv6: annotate accesses to fn->fn_sernum

[Greg Kroah-Hartman]

From: Eric Dumazet <edumazet@google.com>

commit aafc2e3285c2d7a79b7ee15221c19fbeca7b1509 upstream.

struct fib6_node's fn_sernum field can be
read while other threads change it.

Add READ_ONCE()/WRITE_ONCE() annotations.

Do not change existing smp barriers in fib6_get_cookie_safe()
and __fib6_update_sernum_upto_root()

syzbot reported:

BUG: KCSAN: data-race in fib6_clean_node / inet6_csk_route_socket

write to 0xffff88813df62e2c of 4 bytes by task 1920 on cpu 1:
 fib6_clean_node+0xc2/0x260 net/ipv6/ip6_fib.c:2178
 fib6_walk_continue+0x38e/0x430 net/ipv6/ip6_fib.c:2112
 fib6_walk net/ipv6/ip6_fib.c:2160 [inline]
 fib6_clean_tree net/ipv6/ip6_fib.c:2240 [inline]
 __fib6_clean_all+0x1a9/0x2e0 net/ipv6/ip6_fib.c:2256
 fib6_flush_trees+0x6c/0x80 net/ipv6/ip6_fib.c:2281
 rt_genid_bump_ipv6 include/net/net_namespace.h:488 [inline]
 addrconf_dad_completed+0x57f/0x870 net/ipv6/addrconf.c:4230
 addrconf_dad_work+0x908/0x1170
 process_one_work+0x3f6/0x960 kernel/workqueue.c:2307
 worker_thread+0x616/0xa70 kernel/workqueue.c:2454
 kthread+0x1bf/0x1e0 kernel/kthread.c:359
 ret_from_fork+0x1f/0x30

read to 0xffff88813df62e2c of 4 bytes by task 15701 on cpu 0:
 fib6_get_cookie_safe include/net/ip6_fib.h:285 [inline]
 rt6_get_cookie include/net/ip6_fib.h:306 [inline]
 ip6_dst_store include/net/ip6_route.h:234 [inline]
 inet6_csk_route_socket+0x352/0x3c0 net/ipv6/inet6_connection_sock.c:109
 inet6_csk_xmit+0x91/0x1e0 net/ipv6/inet6_connection_sock.c:121
 __tcp_transmit_skb+0x1323/0x1840 net/ipv4/tcp_output.c:1402
 tcp_transmit_skb net/ipv4/tcp_output.c:1420 [inline]
 tcp_write_xmit+0x1450/0x4460 net/ipv4/tcp_output.c:2680
 __tcp_push_pending_frames+0x68/0x1c0 net/ipv4/tcp_output.c:2864
 tcp_push+0x2d9/0x2f0 net/ipv4/tcp.c:725
 mptcp_push_release net/mptcp/protocol.c:1491 [inline]
 __mptcp_push_pending+0x46c/0x490 net/mptcp/protocol.c:1578
 mptcp_sendmsg+0x9ec/0xa50 net/mptcp/protocol.c:1764
 inet6_sendmsg+0x5f/0x80 net/ipv6/af_inet6.c:643
 sock_sendmsg_nosec net/socket.c:705 [inline]
 sock_sendmsg net/socket.c:725 [inline]
 kernel_sendmsg+0x97/0xd0 net/socket.c:745
 sock_no_sendpage+0x84/0xb0 net/core/sock.c:3086
 inet_sendpage+0x9d/0xc0 net/ipv4/af_inet.c:834
 kernel_sendpage+0x187/0x200 net/socket.c:3492
 sock_sendpage+0x5a/0x70 net/socket.c:1007
 pipe_to_sendpage+0x128/0x160 fs/splice.c:364
 splice_from_pipe_feed fs/splice.c:418 [inline]
 __splice_from_pipe+0x207/0x500 fs/splice.c:562
 splice_from_pipe fs/splice.c:597 [inline]
 generic_splice_sendpage+0x94/0xd0 fs/splice.c:746
 do_splice_from fs/splice.c:767 [inline]
 direct_splice_actor+0x80/0xa0 fs/splice.c:936
 splice_direct_to_actor+0x345/0x650 fs/splice.c:891
 do_splice_direct+0x106/0x190 fs/splice.c:979
 do_sendfile+0x675/0xc40 fs/read_write.c:1245
 __do_sys_sendfile64 fs/read_write.c:1310 [inline]
 __se_sys_sendfile64 fs/read_write.c:1296 [inline]
 __x64_sys_sendfile64+0x102/0x140 fs/read_write.c:1296
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x0000026f -> 0x00000271

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 15701 Comm: syz-executor.2 Not tainted 5.16.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011

The Fixes tag I chose is probably arbitrary, I do not think
we need to backport this patch to older kernels.

Fixes: c5cff8561d2d ("ipv6: add rcu grace period before freeing fib6_node")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Link: https://lore.kernel.org/r/20220120174112.1126644-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/net/ip6_fib.h |    2 +-
 net/ipv6/ip6_fib.c    |   23 +++++++++++++----------
 net/ipv6/route.c      |    2 +-
 3 files changed, 15 insertions(+), 12 deletions(-)

--- a/include/net/ip6_fib.h
+++ b/include/net/ip6_fib.h
@@ -280,7 +280,7 @@ static inline bool fib6_get_cookie_safe(
 	fn = rcu_dereference(f6i->fib6_node);
 
 	if (fn) {
-		*cookie = fn->fn_sernum;
+		*cookie = READ_ONCE(fn->fn_sernum);
 		/* pairs with smp_wmb() in fib6_update_sernum_upto_root() */
 		smp_rmb();
 		status = true;
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -110,7 +110,7 @@ void fib6_update_sernum(struct net *net,
 	fn = rcu_dereference_protected(f6i->fib6_node,
 			lockdep_is_held(&f6i->fib6_table->tb6_lock));
 	if (fn)
-		fn->fn_sernum = fib6_new_sernum(net);
+		WRITE_ONCE(fn->fn_sernum, fib6_new_sernum(net));
 }
 
 /*
@@ -587,12 +587,13 @@ static int fib6_dump_table(struct fib6_t
 		spin_unlock_bh(&table->tb6_lock);
 		if (res > 0) {
 			cb->args[4] = 1;
-			cb->args[5] = w->root->fn_sernum;
+			cb->args[5] = READ_ONCE(w->root->fn_sernum);
 		}
 	} else {
-		if (cb->args[5] != w->root->fn_sernum) {
+		int sernum = READ_ONCE(w->root->fn_sernum);
+		if (cb->args[5] != sernum) {
 			/* Begin at the root if the tree changed */
-			cb->args[5] = w->root->fn_sernum;
+			cb->args[5] = sernum;
 			w->state = FWS_INIT;
 			w->node = w->root;
 			w->skip = w->count;
@@ -1342,7 +1343,7 @@ static void __fib6_update_sernum_upto_ro
 	/* paired with smp_rmb() in rt6_get_cookie_safe() */
 	smp_wmb();
 	while (fn) {
-		fn->fn_sernum = sernum;
+		WRITE_ONCE(fn->fn_sernum, sernum);
 		fn = rcu_dereference_protected(fn->parent,
 				lockdep_is_held(&rt->fib6_table->tb6_lock));
 	}
@@ -2171,8 +2172,8 @@ static int fib6_clean_node(struct fib6_w
 	};
 
 	if (c->sernum != FIB6_NO_SERNUM_CHANGE &&
-	    w->node->fn_sernum != c->sernum)
-		w->node->fn_sernum = c->sernum;
+	    READ_ONCE(w->node->fn_sernum) != c->sernum)
+		WRITE_ONCE(w->node->fn_sernum, c->sernum);
 
 	if (!c->func) {
 		WARN_ON_ONCE(c->sernum == FIB6_NO_SERNUM_CHANGE);
@@ -2536,7 +2537,7 @@ static void ipv6_route_seq_setup_walk(st
 	iter->w.state = FWS_INIT;
 	iter->w.node = iter->w.root;
 	iter->w.args = iter;
-	iter->sernum = iter->w.root->fn_sernum;
+	iter->sernum = READ_ONCE(iter->w.root->fn_sernum);
 	INIT_LIST_HEAD(&iter->w.lh);
 	fib6_walker_link(net, &iter->w);
 }
@@ -2564,8 +2565,10 @@ static struct fib6_table *ipv6_route_seq
 
 static void ipv6_route_check_sernum(struct ipv6_route_iter *iter)
 {
-	if (iter->sernum != iter->w.root->fn_sernum) {
-		iter->sernum = iter->w.root->fn_sernum;
+	int sernum = READ_ONCE(iter->w.root->fn_sernum);
+
+	if (iter->sernum != sernum) {
+		iter->sernum = sernum;
 		iter->w.state = FWS_INIT;
 		iter->w.node = iter->w.root;
 		WARN_ON(iter->w.skip);
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -2674,7 +2674,7 @@ static void ip6_link_failure(struct sk_b
 			if (from) {
 				fn = rcu_dereference(from->fib6_node);
 				if (fn && (rt->rt6i_flags & RTF_DEFAULT))
-					fn->fn_sernum = -1;
+					WRITE_ONCE(fn->fn_sernum, -1);
 			}
 		}
 		rcu_read_unlock();

[PATCH 5.10 066/100] NFS: Ensure the server has an up to date ctime before hardlinking

[Greg Kroah-Hartman]

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

[ Upstream commit 204975036b34f55237bc44c8a302a88468ef21b5 ]

Creating a hard link is required by POSIX to update the file ctime, so
ensure that the file data is synced to disk so that we don't clobber the
updated ctime by writing back after creating the hard link.

Fixes: 9f7682728728 ("NFS: Move the delegation return down into nfs4_proc_link()")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/nfs/dir.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -2192,6 +2192,8 @@ nfs_link(struct dentry *old_dentry, stru
 
 	trace_nfs_link_enter(inode, dir, dentry);
 	d_drop(dentry);
+	if (S_ISREG(inode->i_mode))
+		nfs_sync_inode(inode);
 	error = NFS_PROTO(dir)->link(inode, dir, &dentry->d_name);
 	if (error == 0) {
 		ihold(inode);

[PATCH 5.10 067/100] NFS: Ensure the server has an up to date ctime before renaming

[Greg Kroah-Hartman]

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

[ Upstream commit 6ff9d99bb88faebf134ca668842349d9718e5464 ]

Renaming a file is required by POSIX to update the file ctime, so
ensure that the file data is synced to disk so that we don't clobber the
updated ctime by writing back after creating the hard link.

Fixes: f2c2c552f119 ("NFS: Move delegation recall into the NFSv4 callback for rename_setup()")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/nfs/dir.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -2282,6 +2282,8 @@ int nfs_rename(struct inode *old_dir, st
 		}
 	}
 
+	if (S_ISREG(old_inode->i_mode))
+		nfs_sync_inode(old_inode);
 	task = nfs_async_rename(old_dir, new_dir, old_dentry, new_dentry, NULL);
 	if (IS_ERR(task)) {
 		error = PTR_ERR(task);

[PATCH 5.10 068/100] powerpc64/bpf: Limit ldbrx to processors compliant with ISA v2.06

[Greg Kroah-Hartman]

From: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>

[ Upstream commit 3f5f766d5f7f95a69a630da3544a1a0cee1cdddf ]

Johan reported the below crash with test_bpf on ppc64 e5500:

  test_bpf: #296 ALU_END_FROM_LE 64: 0x0123456789abcdef -> 0x67452301 jited:1
  Oops: Exception in kernel mode, sig: 4 [#1]
  BE PAGE_SIZE=4K SMP NR_CPUS=24 QEMU e500
  Modules linked in: test_bpf(+)
  CPU: 0 PID: 76 Comm: insmod Not tainted 5.14.0-03771-g98c2059e008a-dirty #1
  NIP:  8000000000061c3c LR: 80000000006dea64 CTR: 8000000000061c18
  REGS: c0000000032d3420 TRAP: 0700   Not tainted (5.14.0-03771-g98c2059e008a-dirty)
  MSR:  0000000080089000 <EE,ME>  CR: 88002822  XER: 20000000 IRQMASK: 0
  <...>
  NIP [8000000000061c3c] 0x8000000000061c3c
  LR [80000000006dea64] .__run_one+0x104/0x17c [test_bpf]
  Call Trace:
   .__run_one+0x60/0x17c [test_bpf] (unreliable)
   .test_bpf_init+0x6a8/0xdc8 [test_bpf]
   .do_one_initcall+0x6c/0x28c
   .do_init_module+0x68/0x28c
   .load_module+0x2460/0x2abc
   .__do_sys_init_module+0x120/0x18c
   .system_call_exception+0x110/0x1b8
   system_call_common+0xf0/0x210
  --- interrupt: c00 at 0x101d0acc
  <...>
  ---[ end trace 47b2bf19090bb3d0 ]---

  Illegal instruction

The illegal instruction turned out to be 'ldbrx' emitted for
BPF_FROM_[L|B]E, which was only introduced in ISA v2.06. Guard use of
the same and implement an alternative approach for older processors.

Fixes: 156d0e290e969c ("powerpc/ebpf/jit: Implement JIT compiler for extended BPF")
Reported-by: Johan Almbladh <johan.almbladh@anyfinetworks.com>
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Tested-by: Johan Almbladh <johan.almbladh@anyfinetworks.com>
Acked-by: Johan Almbladh <johan.almbladh@anyfinetworks.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/d1e51c6fdf572062cf3009a751c3406bda01b832.1641468127.git.naveen.n.rao@linux.vnet.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/powerpc/include/asm/ppc-opcode.h |  1 +
 arch/powerpc/net/bpf_jit_comp64.c     | 22 +++++++++++++---------
 2 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h
index a6e3700c4566a..f0c0816f57270 100644
--- a/arch/powerpc/include/asm/ppc-opcode.h
+++ b/arch/powerpc/include/asm/ppc-opcode.h
@@ -449,6 +449,7 @@
 #define PPC_RAW_LDX(r, base, b)		(0x7c00002a | ___PPC_RT(r) | ___PPC_RA(base) | ___PPC_RB(b))
 #define PPC_RAW_LHZ(r, base, i)		(0xa0000000 | ___PPC_RT(r) | ___PPC_RA(base) | IMM_L(i))
 #define PPC_RAW_LHBRX(r, base, b)	(0x7c00062c | ___PPC_RT(r) | ___PPC_RA(base) | ___PPC_RB(b))
+#define PPC_RAW_LWBRX(r, base, b)	(0x7c00042c | ___PPC_RT(r) | ___PPC_RA(base) | ___PPC_RB(b))
 #define PPC_RAW_LDBRX(r, base, b)	(0x7c000428 | ___PPC_RT(r) | ___PPC_RA(base) | ___PPC_RB(b))
 #define PPC_RAW_STWCX(s, a, b)		(0x7c00012d | ___PPC_RS(s) | ___PPC_RA(a) | ___PPC_RB(b))
 #define PPC_RAW_CMPWI(a, i)		(0x2c000000 | ___PPC_RA(a) | IMM_L(i))
diff --git a/arch/powerpc/net/bpf_jit_comp64.c b/arch/powerpc/net/bpf_jit_comp64.c
index 8936090acb579..0d47514e8870d 100644
--- a/arch/powerpc/net/bpf_jit_comp64.c
+++ b/arch/powerpc/net/bpf_jit_comp64.c
@@ -651,17 +651,21 @@ bpf_alu32_trunc:
 				EMIT(PPC_RAW_MR(dst_reg, b2p[TMP_REG_1]));
 				break;
 			case 64:
-				/*
-				 * Way easier and faster(?) to store the value
-				 * into stack and then use ldbrx
-				 *
-				 * ctx->seen will be reliable in pass2, but
-				 * the instructions generated will remain the
-				 * same across all passes
-				 */
+				/* Store the value to stack and then use byte-reverse loads */
 				PPC_BPF_STL(dst_reg, 1, bpf_jit_stack_local(ctx));
 				EMIT(PPC_RAW_ADDI(b2p[TMP_REG_1], 1, bpf_jit_stack_local(ctx)));
-				EMIT(PPC_RAW_LDBRX(dst_reg, 0, b2p[TMP_REG_1]));
+				if (cpu_has_feature(CPU_FTR_ARCH_206)) {
+					EMIT(PPC_RAW_LDBRX(dst_reg, 0, b2p[TMP_REG_1]));
+				} else {
+					EMIT(PPC_RAW_LWBRX(dst_reg, 0, b2p[TMP_REG_1]));
+					if (IS_ENABLED(CONFIG_CPU_LITTLE_ENDIAN))
+						EMIT(PPC_RAW_SLDI(dst_reg, dst_reg, 32));
+					EMIT(PPC_RAW_LI(b2p[TMP_REG_2], 4));
+					EMIT(PPC_RAW_LWBRX(b2p[TMP_REG_2], b2p[TMP_REG_2], b2p[TMP_REG_1]));
+					if (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
+						EMIT(PPC_RAW_SLDI(b2p[TMP_REG_2], b2p[TMP_REG_2], 32));
+					EMIT(PPC_RAW_OR(dst_reg, dst_reg, b2p[TMP_REG_2]));
+				}
 				break;
 			}
 			break;
-- 
2.34.1

[PATCH 5.10 069/100] netfilter: conntrack: dont increment invalid counter on NF_REPEAT

[Greg Kroah-Hartman]

From: Florian Westphal <fw@strlen.de>

[ Upstream commit 830af2eba40327abec64325a5b08b1e85c37a2e0 ]

The packet isn't invalid, REPEAT means we're trying again after cleaning
out a stale connection, e.g. via tcp tracker.

This caused increases of invalid stat counter in a test case involving
frequent connection reuse, even though no packet is actually invalid.

Fixes: 56a62e2218f5 ("netfilter: conntrack: fix NF_REPEAT handling")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/netfilter/nf_conntrack_core.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index f4cf26b606f92..8369af0c50eab 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -1832,15 +1832,17 @@ repeat:
 		pr_debug("nf_conntrack_in: Can't track with proto module\n");
 		nf_conntrack_put(&ct->ct_general);
 		skb->_nfct = 0;
-		NF_CT_STAT_INC_ATOMIC(state->net, invalid);
-		if (ret == -NF_DROP)
-			NF_CT_STAT_INC_ATOMIC(state->net, drop);
 		/* Special case: TCP tracker reports an attempt to reopen a
 		 * closed/aborted connection. We have to go back and create a
 		 * fresh conntrack.
 		 */
 		if (ret == -NF_REPEAT)
 			goto repeat;
+
+		NF_CT_STAT_INC_ATOMIC(state->net, invalid);
+		if (ret == -NF_DROP)
+			NF_CT_STAT_INC_ATOMIC(state->net, drop);
+
 		ret = -ret;
 		goto out;
 	}
-- 
2.34.1

[PATCH 5.10 070/100] kernel: delete repeated words in comments

[Greg Kroah-Hartman]

From: Randy Dunlap <rdunlap@infradead.org>

[ Upstream commit c034f48e99907d5be147ac8f0f3e630a9307c2be ]

Drop repeated words in kernel/events/.
{if, the, that, with, time}

Drop repeated words in kernel/locking/.
{it, no, the}

Drop repeated words in kernel/sched/.
{in, not}

Link: https://lkml.kernel.org/r/20210127023412.26292-1-rdunlap@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Will Deacon <will@kernel.org>	[kernel/locking/]
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Will Deacon <will@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 kernel/events/core.c       | 8 ++++----
 kernel/events/uprobes.c    | 2 +-
 kernel/locking/rtmutex.c   | 4 ++--
 kernel/locking/rwsem.c     | 2 +-
 kernel/locking/semaphore.c | 2 +-
 kernel/sched/fair.c        | 2 +-
 kernel/sched/membarrier.c  | 2 +-
 7 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index e2d774cc470ee..8dc7c4d12b789 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -266,7 +266,7 @@ static void event_function_call(struct perf_event *event, event_f func, void *da
 	if (!event->parent) {
 		/*
 		 * If this is a !child event, we must hold ctx::mutex to
-		 * stabilize the the event->ctx relation. See
+		 * stabilize the event->ctx relation. See
 		 * perf_event_ctx_lock().
 		 */
 		lockdep_assert_held(&ctx->mutex);
@@ -1300,7 +1300,7 @@ static void put_ctx(struct perf_event_context *ctx)
  * life-time rules separate them. That is an exiting task cannot fork, and a
  * spawning task cannot (yet) exit.
  *
- * But remember that that these are parent<->child context relations, and
+ * But remember that these are parent<->child context relations, and
  * migration does not affect children, therefore these two orderings should not
  * interact.
  *
@@ -1439,7 +1439,7 @@ static u64 primary_event_id(struct perf_event *event)
 /*
  * Get the perf_event_context for a task and lock it.
  *
- * This has to cope with with the fact that until it is locked,
+ * This has to cope with the fact that until it is locked,
  * the context could get moved to another task.
  */
 static struct perf_event_context *
@@ -2492,7 +2492,7 @@ static void perf_set_shadow_time(struct perf_event *event,
 	 * But this is a bit hairy.
 	 *
 	 * So instead, we have an explicit cgroup call to remain
-	 * within the time time source all along. We believe it
+	 * within the time source all along. We believe it
 	 * is cleaner and simpler to understand.
 	 */
 	if (is_cgroup_event(event))
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index 00b0358739ab3..e1bbb3b92921d 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -1735,7 +1735,7 @@ void uprobe_free_utask(struct task_struct *t)
 }
 
 /*
- * Allocate a uprobe_task object for the task if if necessary.
+ * Allocate a uprobe_task object for the task if necessary.
  * Called when the thread hits a breakpoint.
  *
  * Returns:
diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c
index 2f8cd616d3b29..f00dd928fc711 100644
--- a/kernel/locking/rtmutex.c
+++ b/kernel/locking/rtmutex.c
@@ -1438,7 +1438,7 @@ rt_mutex_fasttrylock(struct rt_mutex *lock,
 }
 
 /*
- * Performs the wakeup of the the top-waiter and re-enables preemption.
+ * Performs the wakeup of the top-waiter and re-enables preemption.
  */
 void rt_mutex_postunlock(struct wake_q_head *wake_q)
 {
@@ -1832,7 +1832,7 @@ struct task_struct *rt_mutex_next_owner(struct rt_mutex *lock)
  *			been started.
  * @waiter:		the pre-initialized rt_mutex_waiter
  *
- * Wait for the the lock acquisition started on our behalf by
+ * Wait for the lock acquisition started on our behalf by
  * rt_mutex_start_proxy_lock(). Upon failure, the caller must call
  * rt_mutex_cleanup_proxy_lock().
  *
diff --git a/kernel/locking/rwsem.c b/kernel/locking/rwsem.c
index a163542d178ee..cc5cc889b5b7f 100644
--- a/kernel/locking/rwsem.c
+++ b/kernel/locking/rwsem.c
@@ -1177,7 +1177,7 @@ rwsem_down_write_slowpath(struct rw_semaphore *sem, int state)
 
 		/*
 		 * If there were already threads queued before us and:
-		 *  1) there are no no active locks, wake the front
+		 *  1) there are no active locks, wake the front
 		 *     queued process(es) as the handoff bit might be set.
 		 *  2) there are no active writers and some readers, the lock
 		 *     must be read owned; so we try to wake any read lock
diff --git a/kernel/locking/semaphore.c b/kernel/locking/semaphore.c
index d9dd94defc0a9..9aa855a96c4ae 100644
--- a/kernel/locking/semaphore.c
+++ b/kernel/locking/semaphore.c
@@ -119,7 +119,7 @@ EXPORT_SYMBOL(down_killable);
  * @sem: the semaphore to be acquired
  *
  * Try to acquire the semaphore atomically.  Returns 0 if the semaphore has
- * been acquired successfully or 1 if it it cannot be acquired.
+ * been acquired successfully or 1 if it cannot be acquired.
  *
  * NOTE: This return value is inverted from both spin_trylock and
  * mutex_trylock!  Be careful about this when converting code.
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 2a33cb5a10e59..8d2f238fdd2ac 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -5149,7 +5149,7 @@ static void do_sched_cfs_slack_timer(struct cfs_bandwidth *cfs_b)
 /*
  * When a group wakes up we want to make sure that its quota is not already
  * expired/exceeded, otherwise it may be allowed to steal additional ticks of
- * runtime as update_curr() throttling can not not trigger until it's on-rq.
+ * runtime as update_curr() throttling can not trigger until it's on-rq.
  */
 static void check_enqueue_throttle(struct cfs_rq *cfs_rq)
 {
diff --git a/kernel/sched/membarrier.c b/kernel/sched/membarrier.c
index 4d4dd349c05be..cc7cd512e4e33 100644
--- a/kernel/sched/membarrier.c
+++ b/kernel/sched/membarrier.c
@@ -316,7 +316,7 @@ static int sync_runqueues_membarrier_state(struct mm_struct *mm)
 
 	/*
 	 * For each cpu runqueue, if the task's mm match @mm, ensure that all
-	 * @mm's membarrier state set bits are also set in in the runqueue's
+	 * @mm's membarrier state set bits are also set in the runqueue's
 	 * membarrier state. This ensures that a runqueue scheduling
 	 * between threads which are users of @mm has its membarrier state
 	 * updated.
-- 
2.34.1

[PATCH 5.10 071/100] perf: Fix perf_event_read_local() time

[Greg Kroah-Hartman]

From: Peter Zijlstra <peterz@infradead.org>

[ Upstream commit 09f5e7dc7ad705289e1b1ec065439aa3c42951c4 ]

Time readers that cannot take locks (due to NMI etc..) currently make
use of perf_event::shadow_ctx_time, which, for that event gives:

  time' = now + (time - timestamp)

or, alternatively arranged:

  time' = time + (now - timestamp)

IOW, the progression of time since the last time the shadow_ctx_time
was updated.

There's problems with this:

 A) the shadow_ctx_time is per-event, even though the ctx_time it
    reflects is obviously per context. The direct concequence of this
    is that the context needs to iterate all events all the time to
    keep the shadow_ctx_time in sync.

 B) even with the prior point, the context itself might not be active
    meaning its time should not advance to begin with.

 C) shadow_ctx_time isn't consistently updated when ctx_time is

There are 3 users of this stuff, that suffer differently from this:

 - calc_timer_values()
   - perf_output_read()
   - perf_event_update_userpage()	/* A */

 - perf_event_read_local()		/* A,B */

In particular, perf_output_read() doesn't suffer at all, because it's
sample driven and hence only relevant when the event is actually
running.

This same was supposed to be true for perf_event_update_userpage(),
after all self-monitoring implies the context is active *HOWEVER*, as
per commit f79256532682 ("perf/core: fix userpage->time_enabled of
inactive events") this goes wrong when combined with counter
overcommit, in that case those events that do not get scheduled when
the context becomes active (task events typically) miss out on the
EVENT_TIME update and ENABLED time is inflated (for a little while)
with the time the context was inactive. Once the event gets rotated
in, this gets corrected, leading to a non-monotonic timeflow.

perf_event_read_local() made things even worse, it can request time at
any point, suffering all the problems perf_event_update_userpage()
does and more. Because while perf_event_update_userpage() is limited
by the context being active, perf_event_read_local() users have no
such constraint.

Therefore, completely overhaul things and do away with
perf_event::shadow_ctx_time. Instead have regular context time updates
keep track of this offset directly and provide perf_event_time_now()
to complement perf_event_time().

perf_event_time_now() will, in adition to being context wide, also
take into account if the context is active. For inactive context, it
will not advance time.

This latter property means the cgroup perf_cgroup_info context needs
to grow addition state to track this.

Additionally, since all this is strictly per-cpu, we can use barrier()
to order context activity vs context time.

Fixes: 7d9285e82db5 ("perf/bpf: Extend the perf_event_read_local() interface, a.k.a. "bpf: perf event change needed for subsequent bpf helpers"")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Song Liu <song@kernel.org>
Tested-by: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/r/YcB06DasOBtU0b00@hirez.programming.kicks-ass.net
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/linux/perf_event.h |  15 +--
 kernel/events/core.c       | 246 ++++++++++++++++++++++---------------
 2 files changed, 149 insertions(+), 112 deletions(-)

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index c94551091dad3..67a50c78232fe 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -678,18 +678,6 @@ struct perf_event {
 	u64				total_time_running;
 	u64				tstamp;
 
-	/*
-	 * timestamp shadows the actual context timing but it can
-	 * be safely used in NMI interrupt context. It reflects the
-	 * context time as it was when the event was last scheduled in,
-	 * or when ctx_sched_in failed to schedule the event because we
-	 * run out of PMC.
-	 *
-	 * ctx_time already accounts for ctx->timestamp. Therefore to
-	 * compute ctx_time for a sample, simply add perf_clock().
-	 */
-	u64				shadow_ctx_time;
-
 	struct perf_event_attr		attr;
 	u16				header_size;
 	u16				id_header_size;
@@ -834,6 +822,7 @@ struct perf_event_context {
 	 */
 	u64				time;
 	u64				timestamp;
+	u64				timeoffset;
 
 	/*
 	 * These fields let us detect when two contexts have both
@@ -916,6 +905,8 @@ struct bpf_perf_event_data_kern {
 struct perf_cgroup_info {
 	u64				time;
 	u64				timestamp;
+	u64				timeoffset;
+	int				active;
 };
 
 struct perf_cgroup {
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 8dc7c4d12b789..c6493f7e02359 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -673,6 +673,23 @@ perf_event_set_state(struct perf_event *event, enum perf_event_state state)
 	WRITE_ONCE(event->state, state);
 }
 
+/*
+ * UP store-release, load-acquire
+ */
+
+#define __store_release(ptr, val)					\
+do {									\
+	barrier();							\
+	WRITE_ONCE(*(ptr), (val));					\
+} while (0)
+
+#define __load_acquire(ptr)						\
+({									\
+	__unqual_scalar_typeof(*(ptr)) ___p = READ_ONCE(*(ptr));	\
+	barrier();							\
+	___p;								\
+})
+
 #ifdef CONFIG_CGROUP_PERF
 
 static inline bool
@@ -718,34 +735,51 @@ static inline u64 perf_cgroup_event_time(struct perf_event *event)
 	return t->time;
 }
 
-static inline void __update_cgrp_time(struct perf_cgroup *cgrp)
+static inline u64 perf_cgroup_event_time_now(struct perf_event *event, u64 now)
 {
-	struct perf_cgroup_info *info;
-	u64 now;
-
-	now = perf_clock();
+	struct perf_cgroup_info *t;
 
-	info = this_cpu_ptr(cgrp->info);
+	t = per_cpu_ptr(event->cgrp->info, event->cpu);
+	if (!__load_acquire(&t->active))
+		return t->time;
+	now += READ_ONCE(t->timeoffset);
+	return now;
+}
 
-	info->time += now - info->timestamp;
+static inline void __update_cgrp_time(struct perf_cgroup_info *info, u64 now, bool adv)
+{
+	if (adv)
+		info->time += now - info->timestamp;
 	info->timestamp = now;
+	/*
+	 * see update_context_time()
+	 */
+	WRITE_ONCE(info->timeoffset, info->time - info->timestamp);
 }
 
-static inline void update_cgrp_time_from_cpuctx(struct perf_cpu_context *cpuctx)
+static inline void update_cgrp_time_from_cpuctx(struct perf_cpu_context *cpuctx, bool final)
 {
 	struct perf_cgroup *cgrp = cpuctx->cgrp;
 	struct cgroup_subsys_state *css;
+	struct perf_cgroup_info *info;
 
 	if (cgrp) {
+		u64 now = perf_clock();
+
 		for (css = &cgrp->css; css; css = css->parent) {
 			cgrp = container_of(css, struct perf_cgroup, css);
-			__update_cgrp_time(cgrp);
+			info = this_cpu_ptr(cgrp->info);
+
+			__update_cgrp_time(info, now, true);
+			if (final)
+				__store_release(&info->active, 0);
 		}
 	}
 }
 
 static inline void update_cgrp_time_from_event(struct perf_event *event)
 {
+	struct perf_cgroup_info *info;
 	struct perf_cgroup *cgrp;
 
 	/*
@@ -759,8 +793,10 @@ static inline void update_cgrp_time_from_event(struct perf_event *event)
 	/*
 	 * Do not update time when cgroup is not active
 	 */
-	if (cgroup_is_descendant(cgrp->css.cgroup, event->cgrp->css.cgroup))
-		__update_cgrp_time(event->cgrp);
+	if (cgroup_is_descendant(cgrp->css.cgroup, event->cgrp->css.cgroup)) {
+		info = this_cpu_ptr(event->cgrp->info);
+		__update_cgrp_time(info, perf_clock(), true);
+	}
 }
 
 static inline void
@@ -784,7 +820,8 @@ perf_cgroup_set_timestamp(struct task_struct *task,
 	for (css = &cgrp->css; css; css = css->parent) {
 		cgrp = container_of(css, struct perf_cgroup, css);
 		info = this_cpu_ptr(cgrp->info);
-		info->timestamp = ctx->timestamp;
+		__update_cgrp_time(info, ctx->timestamp, false);
+		__store_release(&info->active, 1);
 	}
 }
 
@@ -980,14 +1017,6 @@ out:
 	return ret;
 }
 
-static inline void
-perf_cgroup_set_shadow_time(struct perf_event *event, u64 now)
-{
-	struct perf_cgroup_info *t;
-	t = per_cpu_ptr(event->cgrp->info, event->cpu);
-	event->shadow_ctx_time = now - t->timestamp;
-}
-
 static inline void
 perf_cgroup_event_enable(struct perf_event *event, struct perf_event_context *ctx)
 {
@@ -1065,7 +1094,8 @@ static inline void update_cgrp_time_from_event(struct perf_event *event)
 {
 }
 
-static inline void update_cgrp_time_from_cpuctx(struct perf_cpu_context *cpuctx)
+static inline void update_cgrp_time_from_cpuctx(struct perf_cpu_context *cpuctx,
+						bool final)
 {
 }
 
@@ -1097,12 +1127,12 @@ perf_cgroup_switch(struct task_struct *task, struct task_struct *next)
 {
 }
 
-static inline void
-perf_cgroup_set_shadow_time(struct perf_event *event, u64 now)
+static inline u64 perf_cgroup_event_time(struct perf_event *event)
 {
+	return 0;
 }
 
-static inline u64 perf_cgroup_event_time(struct perf_event *event)
+static inline u64 perf_cgroup_event_time_now(struct perf_event *event, u64 now)
 {
 	return 0;
 }
@@ -1524,22 +1554,59 @@ static void perf_unpin_context(struct perf_event_context *ctx)
 /*
  * Update the record of the current time in a context.
  */
-static void update_context_time(struct perf_event_context *ctx)
+static void __update_context_time(struct perf_event_context *ctx, bool adv)
 {
 	u64 now = perf_clock();
 
-	ctx->time += now - ctx->timestamp;
+	if (adv)
+		ctx->time += now - ctx->timestamp;
 	ctx->timestamp = now;
+
+	/*
+	 * The above: time' = time + (now - timestamp), can be re-arranged
+	 * into: time` = now + (time - timestamp), which gives a single value
+	 * offset to compute future time without locks on.
+	 *
+	 * See perf_event_time_now(), which can be used from NMI context where
+	 * it's (obviously) not possible to acquire ctx->lock in order to read
+	 * both the above values in a consistent manner.
+	 */
+	WRITE_ONCE(ctx->timeoffset, ctx->time - ctx->timestamp);
+}
+
+static void update_context_time(struct perf_event_context *ctx)
+{
+	__update_context_time(ctx, true);
 }
 
 static u64 perf_event_time(struct perf_event *event)
 {
 	struct perf_event_context *ctx = event->ctx;
 
+	if (unlikely(!ctx))
+		return 0;
+
 	if (is_cgroup_event(event))
 		return perf_cgroup_event_time(event);
 
-	return ctx ? ctx->time : 0;
+	return ctx->time;
+}
+
+static u64 perf_event_time_now(struct perf_event *event, u64 now)
+{
+	struct perf_event_context *ctx = event->ctx;
+
+	if (unlikely(!ctx))
+		return 0;
+
+	if (is_cgroup_event(event))
+		return perf_cgroup_event_time_now(event, now);
+
+	if (!(__load_acquire(&ctx->is_active) & EVENT_TIME))
+		return ctx->time;
+
+	now += READ_ONCE(ctx->timeoffset);
+	return now;
 }
 
 static enum event_type_t get_event_type(struct perf_event *event)
@@ -2333,7 +2400,7 @@ __perf_remove_from_context(struct perf_event *event,
 
 	if (ctx->is_active & EVENT_TIME) {
 		update_context_time(ctx);
-		update_cgrp_time_from_cpuctx(cpuctx);
+		update_cgrp_time_from_cpuctx(cpuctx, false);
 	}
 
 	event_sched_out(event, cpuctx, ctx);
@@ -2342,6 +2409,9 @@ __perf_remove_from_context(struct perf_event *event,
 	list_del_event(event, ctx);
 
 	if (!ctx->nr_events && ctx->is_active) {
+		if (ctx == &cpuctx->ctx)
+			update_cgrp_time_from_cpuctx(cpuctx, true);
+
 		ctx->is_active = 0;
 		ctx->rotate_necessary = 0;
 		if (ctx->task) {
@@ -2467,40 +2537,6 @@ void perf_event_disable_inatomic(struct perf_event *event)
 	irq_work_queue(&event->pending);
 }
 
-static void perf_set_shadow_time(struct perf_event *event,
-				 struct perf_event_context *ctx)
-{
-	/*
-	 * use the correct time source for the time snapshot
-	 *
-	 * We could get by without this by leveraging the
-	 * fact that to get to this function, the caller
-	 * has most likely already called update_context_time()
-	 * and update_cgrp_time_xx() and thus both timestamp
-	 * are identical (or very close). Given that tstamp is,
-	 * already adjusted for cgroup, we could say that:
-	 *    tstamp - ctx->timestamp
-	 * is equivalent to
-	 *    tstamp - cgrp->timestamp.
-	 *
-	 * Then, in perf_output_read(), the calculation would
-	 * work with no changes because:
-	 * - event is guaranteed scheduled in
-	 * - no scheduled out in between
-	 * - thus the timestamp would be the same
-	 *
-	 * But this is a bit hairy.
-	 *
-	 * So instead, we have an explicit cgroup call to remain
-	 * within the time source all along. We believe it
-	 * is cleaner and simpler to understand.
-	 */
-	if (is_cgroup_event(event))
-		perf_cgroup_set_shadow_time(event, event->tstamp);
-	else
-		event->shadow_ctx_time = event->tstamp - ctx->timestamp;
-}
-
 #define MAX_INTERRUPTS (~0ULL)
 
 static void perf_log_throttle(struct perf_event *event, int enable);
@@ -2541,8 +2577,6 @@ event_sched_in(struct perf_event *event,
 
 	perf_pmu_disable(event->pmu);
 
-	perf_set_shadow_time(event, ctx);
-
 	perf_log_itrace_start(event);
 
 	if (event->pmu->add(event, PERF_EF_START)) {
@@ -3216,16 +3250,6 @@ static void ctx_sched_out(struct perf_event_context *ctx,
 		return;
 	}
 
-	ctx->is_active &= ~event_type;
-	if (!(ctx->is_active & EVENT_ALL))
-		ctx->is_active = 0;
-
-	if (ctx->task) {
-		WARN_ON_ONCE(cpuctx->task_ctx != ctx);
-		if (!ctx->is_active)
-			cpuctx->task_ctx = NULL;
-	}
-
 	/*
 	 * Always update time if it was set; not only when it changes.
 	 * Otherwise we can 'forget' to update time for any but the last
@@ -3239,7 +3263,22 @@ static void ctx_sched_out(struct perf_event_context *ctx,
 	if (is_active & EVENT_TIME) {
 		/* update (and stop) ctx time */
 		update_context_time(ctx);
-		update_cgrp_time_from_cpuctx(cpuctx);
+		update_cgrp_time_from_cpuctx(cpuctx, ctx == &cpuctx->ctx);
+		/*
+		 * CPU-release for the below ->is_active store,
+		 * see __load_acquire() in perf_event_time_now()
+		 */
+		barrier();
+	}
+
+	ctx->is_active &= ~event_type;
+	if (!(ctx->is_active & EVENT_ALL))
+		ctx->is_active = 0;
+
+	if (ctx->task) {
+		WARN_ON_ONCE(cpuctx->task_ctx != ctx);
+		if (!ctx->is_active)
+			cpuctx->task_ctx = NULL;
 	}
 
 	is_active ^= ctx->is_active; /* changed bits */
@@ -3676,13 +3715,19 @@ static noinline int visit_groups_merge(struct perf_cpu_context *cpuctx,
 	return 0;
 }
 
+/*
+ * Because the userpage is strictly per-event (there is no concept of context,
+ * so there cannot be a context indirection), every userpage must be updated
+ * when context time starts :-(
+ *
+ * IOW, we must not miss EVENT_TIME edges.
+ */
 static inline bool event_update_userpage(struct perf_event *event)
 {
 	if (likely(!atomic_read(&event->mmap_count)))
 		return false;
 
 	perf_event_update_time(event);
-	perf_set_shadow_time(event, event->ctx);
 	perf_event_update_userpage(event);
 
 	return true;
@@ -3766,13 +3811,23 @@ ctx_sched_in(struct perf_event_context *ctx,
 	     struct task_struct *task)
 {
 	int is_active = ctx->is_active;
-	u64 now;
 
 	lockdep_assert_held(&ctx->lock);
 
 	if (likely(!ctx->nr_events))
 		return;
 
+	if (is_active ^ EVENT_TIME) {
+		/* start ctx time */
+		__update_context_time(ctx, false);
+		perf_cgroup_set_timestamp(task, ctx);
+		/*
+		 * CPU-release for the below ->is_active store,
+		 * see __load_acquire() in perf_event_time_now()
+		 */
+		barrier();
+	}
+
 	ctx->is_active |= (event_type | EVENT_TIME);
 	if (ctx->task) {
 		if (!is_active)
@@ -3783,13 +3838,6 @@ ctx_sched_in(struct perf_event_context *ctx,
 
 	is_active ^= ctx->is_active; /* changed bits */
 
-	if (is_active & EVENT_TIME) {
-		/* start ctx time */
-		now = perf_clock();
-		ctx->timestamp = now;
-		perf_cgroup_set_timestamp(task, ctx);
-	}
-
 	/*
 	 * First go through the list and put on any pinned groups
 	 * in order to give them the best chance of going on.
@@ -4325,6 +4373,18 @@ static inline u64 perf_event_count(struct perf_event *event)
 	return local64_read(&event->count) + atomic64_read(&event->child_count);
 }
 
+static void calc_timer_values(struct perf_event *event,
+				u64 *now,
+				u64 *enabled,
+				u64 *running)
+{
+	u64 ctx_time;
+
+	*now = perf_clock();
+	ctx_time = perf_event_time_now(event, *now);
+	__perf_update_times(event, ctx_time, enabled, running);
+}
+
 /*
  * NMI-safe method to read a local event, that is an event that
  * is:
@@ -4384,10 +4444,9 @@ int perf_event_read_local(struct perf_event *event, u64 *value,
 
 	*value = local64_read(&event->count);
 	if (enabled || running) {
-		u64 now = event->shadow_ctx_time + perf_clock();
-		u64 __enabled, __running;
+		u64 __enabled, __running, __now;;
 
-		__perf_update_times(event, now, &__enabled, &__running);
+		calc_timer_values(event, &__now, &__enabled, &__running);
 		if (enabled)
 			*enabled = __enabled;
 		if (running)
@@ -5694,18 +5753,6 @@ static int perf_event_index(struct perf_event *event)
 	return event->pmu->event_idx(event);
 }
 
-static void calc_timer_values(struct perf_event *event,
-				u64 *now,
-				u64 *enabled,
-				u64 *running)
-{
-	u64 ctx_time;
-
-	*now = perf_clock();
-	ctx_time = event->shadow_ctx_time + *now;
-	__perf_update_times(event, ctx_time, enabled, running);
-}
-
 static void perf_event_init_userpage(struct perf_event *event)
 {
 	struct perf_event_mmap_page *userpg;
@@ -6245,7 +6292,6 @@ accounting:
 		ring_buffer_attach(event, rb);
 
 		perf_event_update_time(event);
-		perf_set_shadow_time(event, event->ctx);
 		perf_event_init_userpage(event);
 		perf_event_update_userpage(event);
 	} else {
-- 
2.34.1

[PATCH 5.10 072/100] sched/pelt: Relax the sync of util_sum with util_avg

[Greg Kroah-Hartman]

From: Vincent Guittot <vincent.guittot@linaro.org>

[ Upstream commit 98b0d890220d45418cfbc5157b3382e6da5a12ab ]

Rick reported performance regressions in bugzilla because of cpu frequency
being lower than before:
    https://bugzilla.kernel.org/show_bug.cgi?id=215045

He bisected the problem to:
commit 1c35b07e6d39 ("sched/fair: Ensure _sum and _avg values stay consistent")

This commit forces util_sum to be synced with the new util_avg after
removing the contribution of a task and before the next periodic sync. By
doing so util_sum is rounded to its lower bound and might lost up to
LOAD_AVG_MAX-1 of accumulated contribution which has not yet been
reflected in util_avg.

Instead of always setting util_sum to the low bound of util_avg, which can
significantly lower the utilization of root cfs_rq after propagating the
change down into the hierarchy, we revert the change of util_sum and
propagate the difference.

In addition, we also check that cfs's util_sum always stays above the
lower bound for a given util_avg as it has been observed that
sched_entity's util_sum is sometimes above cfs one.

Fixes: 1c35b07e6d39 ("sched/fair: Ensure _sum and _avg values stay consistent")
Reported-by: Rick Yiu <rickyiu@google.com>
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Tested-by: Sachin Sant <sachinp@linux.ibm.com>
Link: https://lkml.kernel.org/r/20220111134659.24961-2-vincent.guittot@linaro.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 kernel/sched/fair.c | 16 +++++++++++++---
 kernel/sched/pelt.h |  4 +++-
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 8d2f238fdd2ac..acd9833b8ec22 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -3379,7 +3379,6 @@ void set_task_rq_fair(struct sched_entity *se,
 	se->avg.last_update_time = n_last_update_time;
 }
 
-
 /*
  * When on migration a sched_entity joins/leaves the PELT hierarchy, we need to
  * propagate its contribution. The key to this propagation is the invariant
@@ -3447,7 +3446,6 @@ void set_task_rq_fair(struct sched_entity *se,
  * XXX: only do this for the part of runnable > running ?
  *
  */
-
 static inline void
 update_tg_cfs_util(struct cfs_rq *cfs_rq, struct sched_entity *se, struct cfs_rq *gcfs_rq)
 {
@@ -3676,7 +3674,19 @@ update_cfs_rq_load_avg(u64 now, struct cfs_rq *cfs_rq)
 
 		r = removed_util;
 		sub_positive(&sa->util_avg, r);
-		sa->util_sum = sa->util_avg * divider;
+		sub_positive(&sa->util_sum, r * divider);
+		/*
+		 * Because of rounding, se->util_sum might ends up being +1 more than
+		 * cfs->util_sum. Although this is not a problem by itself, detaching
+		 * a lot of tasks with the rounding problem between 2 updates of
+		 * util_avg (~1ms) can make cfs->util_sum becoming null whereas
+		 * cfs_util_avg is not.
+		 * Check that util_sum is still above its lower bound for the new
+		 * util_avg. Given that period_contrib might have moved since the last
+		 * sync, we are only sure that util_sum must be above or equal to
+		 *    util_avg * minimum possible divider
+		 */
+		sa->util_sum = max_t(u32, sa->util_sum, sa->util_avg * PELT_MIN_DIVIDER);
 
 		r = removed_runnable;
 		sub_positive(&sa->runnable_avg, r);
diff --git a/kernel/sched/pelt.h b/kernel/sched/pelt.h
index 0b9aeebb9c325..45bf08e22207c 100644
--- a/kernel/sched/pelt.h
+++ b/kernel/sched/pelt.h
@@ -37,9 +37,11 @@ update_irq_load_avg(struct rq *rq, u64 running)
 }
 #endif
 
+#define PELT_MIN_DIVIDER	(LOAD_AVG_MAX - 1024)
+
 static inline u32 get_pelt_divider(struct sched_avg *avg)
 {
-	return LOAD_AVG_MAX - 1024 + avg->period_contrib;
+	return PELT_MIN_DIVIDER + avg->period_contrib;
 }
 
 static inline void cfs_se_util_change(struct sched_avg *avg)
-- 
2.34.1

[PATCH 5.10 073/100] net: phy: broadcom: hook up soft_reset for BCM54616S

[Greg Kroah-Hartman]

From: Robert Hancock <robert.hancock@calian.com>

[ Upstream commit d15c7e875d44367005370e6a82e8f3a382a04f9b ]

A problem was encountered with the Bel-Fuse 1GBT-SFP05 SFP module (which
is a 1 Gbps copper module operating in SGMII mode with an internal
BCM54616S PHY device) using the Xilinx AXI Ethernet MAC core, where the
module would work properly on the initial insertion or boot of the
device, but after the device was rebooted, the link would either only
come up at 100 Mbps speeds or go up and down erratically.

I found no meaningful changes in the PHY configuration registers between
the working and non-working boots, but the status registers seemed to
have a lot of error indications set on the SERDES side of the device on
the non-working boot. I suspect the problem is that whatever happens on
the SGMII link when the device is rebooted and the FPGA logic gets
reloaded ends up putting the module's onboard PHY into a bad state.

Since commit 6e2d85ec0559 ("net: phy: Stop with excessive soft reset")
the genphy_soft_reset call is not made automatically by the PHY core
unless the callback is explicitly specified in the driver structure. For
most of these Broadcom devices, there is probably a hardware reset that
gets asserted to reset the PHY during boot, however for SFP modules
(where the BCM54616S is commonly found) no such reset line exists, so if
the board keeps the SFP cage powered up across a reboot, it will end up
with no reset occurring during reboots.

Hook up the genphy_soft_reset callback for BCM54616S to ensure that a
PHY reset is performed before the device is initialized. This appears to
fix the issue with erratic operation after a reboot with this SFP
module.

Fixes: 6e2d85ec0559 ("net: phy: Stop with excessive soft reset")
Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/phy/broadcom.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/phy/broadcom.c b/drivers/net/phy/broadcom.c
index dbed15dc0fe77..644861366d544 100644
--- a/drivers/net/phy/broadcom.c
+++ b/drivers/net/phy/broadcom.c
@@ -789,6 +789,7 @@ static struct phy_driver broadcom_drivers[] = {
 	.phy_id_mask	= 0xfffffff0,
 	.name		= "Broadcom BCM54616S",
 	/* PHY_GBIT_FEATURES */
+	.soft_reset     = genphy_soft_reset,
 	.config_init	= bcm54xx_config_init,
 	.config_aneg	= bcm54616s_config_aneg,
 	.ack_interrupt	= bcm_phy_ack_intr,
-- 
2.34.1

[PATCH 5.10 074/100] phylib: fix potential use-after-free

[Greg Kroah-Hartman]

From: Marek Behún <kabel@kernel.org>

[ Upstream commit cbda1b16687580d5beee38273f6241ae3725960c ]

Commit bafbdd527d56 ("phylib: Add device reset GPIO support") added call
to phy_device_reset(phydev) after the put_device() call in phy_detach().

The comment before the put_device() call says that the phydev might go
away with put_device().

Fix potential use-after-free by calling phy_device_reset() before
put_device().

Fixes: bafbdd527d56 ("phylib: Add device reset GPIO support")
Signed-off-by: Marek Behún <kabel@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20220119162748.32418-1-kabel@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/phy/phy_device.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 85f3cde5ffd09..d2f6d8107595a 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -1682,6 +1682,9 @@ void phy_detach(struct phy_device *phydev)
 	    phy_driver_is_genphy_10g(phydev))
 		device_release_driver(&phydev->mdio.dev);
 
+	/* Assert the reset signal */
+	phy_device_reset(phydev, 1);
+
 	/*
 	 * The phydev might go away on the put_device() below, so avoid
 	 * a use-after-free bug by reading the underlying bus first.
@@ -1693,9 +1696,6 @@ void phy_detach(struct phy_device *phydev)
 		ndev_owner = dev->dev.parent->driver->owner;
 	if (ndev_owner != bus->owner)
 		module_put(bus->owner);
-
-	/* Assert the reset signal */
-	phy_device_reset(phydev, 1);
 }
 EXPORT_SYMBOL(phy_detach);
 
-- 
2.34.1

[PATCH 5.10 075/100] octeontx2-pf: Forward error codes to VF

[Greg Kroah-Hartman]

From: Subbaraya Sundeep <sbhatta@marvell.com>

[ Upstream commit a8db854be28622a2477cb21cdf7f829adbb2c42d ]

PF forwards its VF messages to AF and corresponding
replies from AF to VF. AF sets proper error code in the
replies after processing message requests. Currently PF
checks the error codes in replies and sends invalid
message to VF. This way VF lacks the information of
error code set by AF for its messages. This patch
changes that such that PF simply forwards AF replies
so that VF can handle error codes.

Fixes: d424b6c02415 ("octeontx2-pf: Enable SRIOV and added VF mbox handling")
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
index 044a5b1196acb..161174be51c31 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
@@ -386,7 +386,12 @@ static int otx2_forward_vf_mbox_msgs(struct otx2_nic *pf,
 		dst_mdev->msg_size = mbox_hdr->msg_size;
 		dst_mdev->num_msgs = num_msgs;
 		err = otx2_sync_mbox_msg(dst_mbox);
-		if (err) {
+		/* Error code -EIO indicate there is a communication failure
+		 * to the AF. Rest of the error codes indicate that AF processed
+		 * VF messages and set the error codes in response messages
+		 * (if any) so simply forward responses to VF.
+		 */
+		if (err == -EIO) {
 			dev_warn(pf->dev,
 				 "AF not responding to VF%d messages\n", vf);
 			/* restore PF mbase and exit */
-- 
2.34.1

[PATCH 5.10 076/100] rxrpc: Adjust retransmission backoff

[Greg Kroah-Hartman]

From: David Howells <dhowells@redhat.com>

[ Upstream commit 2c13c05c5ff4b9fc907b07f7311821910ebaaf8a ]

Improve retransmission backoff by only backing off when we retransmit data
packets rather than when we set the lost ack timer.

To this end:

 (1) In rxrpc_resend(), use rxrpc_get_rto_backoff() when setting the
     retransmission timer and only tell it that we are retransmitting if we
     actually have things to retransmit.

     Note that it's possible for the retransmission algorithm to race with
     the processing of a received ACK, so we may see no packets needing
     retransmission.

 (2) In rxrpc_send_data_packet(), don't bump the backoff when setting the
     ack_lost_at timer, as it may then get bumped twice.

With this, when looking at one particular packet, the retransmission
intervals were seen to be 1.5ms, 2ms, 3ms, 5ms, 9ms, 17ms, 33ms, 71ms,
136ms, 264ms, 544ms, 1.088s, 2.1s, 4.2s and 8.3s.

Fixes: c410bf01933e ("rxrpc: Fix the excessive initial retransmission timeout")
Suggested-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Marc Dionne <marc.dionne@auristor.com>
Tested-by: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Link: https://lore.kernel.org/r/164138117069.2023386.17446904856843997127.stgit@warthog.procyon.org.uk/
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/rxrpc/call_event.c | 8 +++-----
 net/rxrpc/output.c     | 2 +-
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/net/rxrpc/call_event.c b/net/rxrpc/call_event.c
index 6be2672a65eab..df864e6922679 100644
--- a/net/rxrpc/call_event.c
+++ b/net/rxrpc/call_event.c
@@ -157,7 +157,7 @@ static void rxrpc_congestion_timeout(struct rxrpc_call *call)
 static void rxrpc_resend(struct rxrpc_call *call, unsigned long now_j)
 {
 	struct sk_buff *skb;
-	unsigned long resend_at, rto_j;
+	unsigned long resend_at;
 	rxrpc_seq_t cursor, seq, top;
 	ktime_t now, max_age, oldest, ack_ts;
 	int ix;
@@ -165,10 +165,8 @@ static void rxrpc_resend(struct rxrpc_call *call, unsigned long now_j)
 
 	_enter("{%d,%d}", call->tx_hard_ack, call->tx_top);
 
-	rto_j = call->peer->rto_j;
-
 	now = ktime_get_real();
-	max_age = ktime_sub(now, jiffies_to_usecs(rto_j));
+	max_age = ktime_sub(now, jiffies_to_usecs(call->peer->rto_j));
 
 	spin_lock_bh(&call->lock);
 
@@ -213,7 +211,7 @@ static void rxrpc_resend(struct rxrpc_call *call, unsigned long now_j)
 	}
 
 	resend_at = nsecs_to_jiffies(ktime_to_ns(ktime_sub(now, oldest)));
-	resend_at += jiffies + rto_j;
+	resend_at += jiffies + rxrpc_get_rto_backoff(call->peer, retrans);
 	WRITE_ONCE(call->resend_at, resend_at);
 
 	if (unacked)
diff --git a/net/rxrpc/output.c b/net/rxrpc/output.c
index 10f2bf2e9068a..a45c83f22236e 100644
--- a/net/rxrpc/output.c
+++ b/net/rxrpc/output.c
@@ -468,7 +468,7 @@ done:
 			if (call->peer->rtt_count > 1) {
 				unsigned long nowj = jiffies, ack_lost_at;
 
-				ack_lost_at = rxrpc_get_rto_backoff(call->peer, retrans);
+				ack_lost_at = rxrpc_get_rto_backoff(call->peer, false);
 				ack_lost_at += nowj;
 				WRITE_ONCE(call->ack_lost_at, ack_lost_at);
 				rxrpc_reduce_call_timer(call, ack_lost_at, nowj,
-- 
2.34.1

[PATCH 5.10 077/100] efi/libstub: arm64: Fix image check alignment at entry

[Greg Kroah-Hartman]

From: Mihai Carabas <mihai.carabas@oracle.com>

[ Upstream commit e9b7c3a4263bdcfd31bc3d03d48ce0ded7a94635 ]

The kernel is aligned at SEGMENT_SIZE and this is the size populated in the PE
headers:

arch/arm64/kernel/efi-header.S: .long   SEGMENT_ALIGN // SectionAlignment

EFI_KIMG_ALIGN is defined as: (SEGMENT_ALIGN > THREAD_ALIGN ? SEGMENT_ALIGN :
THREAD_ALIGN)

So it depends on THREAD_ALIGN. On newer builds this message started to appear
even though the loader is taking into account the PE header (which is stating
SEGMENT_ALIGN).

Fixes: c32ac11da3f8 ("efi/libstub: arm64: Double check image alignment at entry")
Signed-off-by: Mihai Carabas <mihai.carabas@oracle.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/firmware/efi/libstub/arm64-stub.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/firmware/efi/libstub/arm64-stub.c b/drivers/firmware/efi/libstub/arm64-stub.c
index c1b57dfb12776..415a971e76947 100644
--- a/drivers/firmware/efi/libstub/arm64-stub.c
+++ b/drivers/firmware/efi/libstub/arm64-stub.c
@@ -119,9 +119,9 @@ efi_status_t handle_kernel_image(unsigned long *image_addr,
 	if (image->image_base != _text)
 		efi_err("FIRMWARE BUG: efi_loaded_image_t::image_base has bogus value\n");
 
-	if (!IS_ALIGNED((u64)_text, EFI_KIMG_ALIGN))
-		efi_err("FIRMWARE BUG: kernel image not aligned on %ldk boundary\n",
-			EFI_KIMG_ALIGN >> 10);
+	if (!IS_ALIGNED((u64)_text, SEGMENT_ALIGN))
+		efi_err("FIRMWARE BUG: kernel image not aligned on %dk boundary\n",
+			SEGMENT_ALIGN >> 10);
 
 	kernel_size = _edata - _text;
 	kernel_memsize = kernel_size + (_end - _edata);
-- 
2.34.1

[PATCH 5.10 078/100] hwmon: (lm90) Mark alert as broken for MAX6654

[Greg Kroah-Hartman]

From: Guenter Roeck <linux@roeck-us.net>

[ Upstream commit a53fff96f35763d132a36c620b183fdf11022d7a ]

Experiments with MAX6654 show that its alert function is broken,
similar to other chips supported by the lm90 driver. Mark it accordingly.

Fixes: 229d495d8189 ("hwmon: (lm90) Add max6654 support to lm90 driver")
Cc: Josh Lehan <krellan@google.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hwmon/lm90.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index fef02bcfedbcf..6841d0401bbd4 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -400,6 +400,7 @@ static const struct lm90_params lm90_params[] = {
 		.reg_local_ext = MAX6657_REG_R_LOCAL_TEMPL,
 	},
 	[max6654] = {
+		.flags = LM90_HAVE_BROKEN_ALERT,
 		.alert_alarms = 0x7c,
 		.max_convrate = 7,
 		.reg_local_ext = MAX6657_REG_R_LOCAL_TEMPL,
-- 
2.34.1

[PATCH 5.10 079/100] powerpc/perf: Fix power_pmu_disable to call clear_pmi_irq_pending only if PMI is pending

[Greg Kroah-Hartman]

From: Athira Rajeev <atrajeev@linux.vnet.ibm.com>

[ Upstream commit fb6433b48a178d4672cb26632454ee0b21056eaa ]

Running selftest with CONFIG_PPC_IRQ_SOFT_MASK_DEBUG enabled in kernel
triggered below warning:

[  172.851380] ------------[ cut here ]------------
[  172.851391] WARNING: CPU: 8 PID: 2901 at arch/powerpc/include/asm/hw_irq.h:246 power_pmu_disable+0x270/0x280
[  172.851402] Modules linked in: dm_mod bonding nft_ct nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set nf_tables rfkill nfnetlink sunrpc xfs libcrc32c pseries_rng xts vmx_crypto uio_pdrv_genirq uio sch_fq_codel ip_tables ext4 mbcache jbd2 sd_mod t10_pi sg ibmvscsi ibmveth scsi_transport_srp fuse
[  172.851442] CPU: 8 PID: 2901 Comm: lost_exception_ Not tainted 5.16.0-rc5-03218-g798527287598 #2
[  172.851451] NIP:  c00000000013d600 LR: c00000000013d5a4 CTR: c00000000013b180
[  172.851458] REGS: c000000017687860 TRAP: 0700   Not tainted  (5.16.0-rc5-03218-g798527287598)
[  172.851465] MSR:  8000000000029033 <SF,EE,ME,IR,DR,RI,LE>  CR: 48004884  XER: 20040000
[  172.851482] CFAR: c00000000013d5b4 IRQMASK: 1
[  172.851482] GPR00: c00000000013d5a4 c000000017687b00 c000000002a10600 0000000000000004
[  172.851482] GPR04: 0000000082004000 c0000008ba08f0a8 0000000000000000 00000008b7ed0000
[  172.851482] GPR08: 00000000446194f6 0000000000008000 c00000000013b118 c000000000d58e68
[  172.851482] GPR12: c00000000013d390 c00000001ec54a80 0000000000000000 0000000000000000
[  172.851482] GPR16: 0000000000000000 0000000000000000 c000000015d5c708 c0000000025396d0
[  172.851482] GPR20: 0000000000000000 0000000000000000 c00000000a3bbf40 0000000000000003
[  172.851482] GPR24: 0000000000000000 c0000008ba097400 c0000000161e0d00 c00000000a3bb600
[  172.851482] GPR28: c000000015d5c700 0000000000000001 0000000082384090 c0000008ba0020d8
[  172.851549] NIP [c00000000013d600] power_pmu_disable+0x270/0x280
[  172.851557] LR [c00000000013d5a4] power_pmu_disable+0x214/0x280
[  172.851565] Call Trace:
[  172.851568] [c000000017687b00] [c00000000013d5a4] power_pmu_disable+0x214/0x280 (unreliable)
[  172.851579] [c000000017687b40] [c0000000003403ac] perf_pmu_disable+0x4c/0x60
[  172.851588] [c000000017687b60] [c0000000003445e4] __perf_event_task_sched_out+0x1d4/0x660
[  172.851596] [c000000017687c50] [c000000000d1175c] __schedule+0xbcc/0x12a0
[  172.851602] [c000000017687d60] [c000000000d11ea8] schedule+0x78/0x140
[  172.851608] [c000000017687d90] [c0000000001a8080] sys_sched_yield+0x20/0x40
[  172.851615] [c000000017687db0] [c0000000000334dc] system_call_exception+0x18c/0x380
[  172.851622] [c000000017687e10] [c00000000000c74c] system_call_common+0xec/0x268

The warning indicates that MSR_EE being set(interrupt enabled) when
there was an overflown PMC detected. This could happen in
power_pmu_disable since it runs under interrupt soft disable
condition ( local_irq_save ) and not with interrupts hard disabled.
commit 2c9ac51b850d ("powerpc/perf: Fix PMU callbacks to clear
pending PMI before resetting an overflown PMC") intended to clear
PMI pending bit in Paca when disabling the PMU. It could happen
that PMC gets overflown while code is in power_pmu_disable
callback function. Hence add a check to see if PMI pending bit
is set in Paca before clearing it via clear_pmi_pending.

Fixes: 2c9ac51b850d ("powerpc/perf: Fix PMU callbacks to clear pending PMI before resetting an overflown PMC")
Reported-by: Sachin Sant <sachinp@linux.ibm.com>
Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Tested-by: Sachin Sant <sachinp@linux.ibm.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220122033429.25395-1-atrajeev@linux.vnet.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/powerpc/perf/core-book3s.c | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c
index bd34e062bd290..e49aa8fc6a491 100644
--- a/arch/powerpc/perf/core-book3s.c
+++ b/arch/powerpc/perf/core-book3s.c
@@ -1273,9 +1273,20 @@ static void power_pmu_disable(struct pmu *pmu)
 		 * Otherwise provide a warning if there is PMI pending, but
 		 * no counter is found overflown.
 		 */
-		if (any_pmc_overflown(cpuhw))
-			clear_pmi_irq_pending();
-		else
+		if (any_pmc_overflown(cpuhw)) {
+			/*
+			 * Since power_pmu_disable runs under local_irq_save, it
+			 * could happen that code hits a PMC overflow without PMI
+			 * pending in paca. Hence only clear PMI pending if it was
+			 * set.
+			 *
+			 * If a PMI is pending, then MSR[EE] must be disabled (because
+			 * the masked PMI handler disabling EE). So it is safe to
+			 * call clear_pmi_irq_pending().
+			 */
+			if (pmi_irq_pending())
+				clear_pmi_irq_pending();
+		} else
 			WARN_ON(pmi_irq_pending());
 
 		val = mmcra = cpuhw->mmcr.mmcra;
-- 
2.34.1

[PATCH 5.10 080/100] net: ipv4: Move ip_options_fragment() out of loop

[Greg Kroah-Hartman]

From: Yajun Deng <yajun.deng@linux.dev>

[ Upstream commit faf482ca196a5b16007190529b3b2dd32ab3f761 ]

The ip_options_fragment() only called when iter->offset is equal to zero,
so move it out of loop, and inline 'Copy the flags to each fragment.'
As also, remove the unused parameter in ip_frag_ipcb().

Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/ipv4/ip_output.c | 19 ++++---------------
 1 file changed, 4 insertions(+), 15 deletions(-)

diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 10d4cde31c6bf..fb91a466b2d34 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -614,18 +614,6 @@ void ip_fraglist_init(struct sk_buff *skb, struct iphdr *iph,
 }
 EXPORT_SYMBOL(ip_fraglist_init);
 
-static void ip_fraglist_ipcb_prepare(struct sk_buff *skb,
-				     struct ip_fraglist_iter *iter)
-{
-	struct sk_buff *to = iter->frag;
-
-	/* Copy the flags to each fragment. */
-	IPCB(to)->flags = IPCB(skb)->flags;
-
-	if (iter->offset == 0)
-		ip_options_fragment(to);
-}
-
 void ip_fraglist_prepare(struct sk_buff *skb, struct ip_fraglist_iter *iter)
 {
 	unsigned int hlen = iter->hlen;
@@ -671,7 +659,7 @@ void ip_frag_init(struct sk_buff *skb, unsigned int hlen,
 EXPORT_SYMBOL(ip_frag_init);
 
 static void ip_frag_ipcb(struct sk_buff *from, struct sk_buff *to,
-			 bool first_frag, struct ip_frag_state *state)
+			 bool first_frag)
 {
 	/* Copy the flags to each fragment. */
 	IPCB(to)->flags = IPCB(from)->flags;
@@ -845,12 +833,13 @@ int ip_do_fragment(struct net *net, struct sock *sk, struct sk_buff *skb,
 
 		/* Everything is OK. Generate! */
 		ip_fraglist_init(skb, iph, hlen, &iter);
+		ip_options_fragment(iter.frag);
 
 		for (;;) {
 			/* Prepare header of the next frame,
 			 * before previous one went down. */
 			if (iter.frag) {
-				ip_fraglist_ipcb_prepare(skb, &iter);
+				IPCB(iter.frag)->flags = IPCB(skb)->flags;
 				ip_fraglist_prepare(skb, &iter);
 			}
 
@@ -905,7 +894,7 @@ slow_path:
 			err = PTR_ERR(skb2);
 			goto fail;
 		}
-		ip_frag_ipcb(skb, skb2, first_frag, &state);
+		ip_frag_ipcb(skb, skb2, first_frag);
 
 		/*
 		 *	Put this fragment into the sending queue.
-- 
2.34.1

[PATCH 5.10 081/100] net: ipv4: Fix the warning for dereference

[Greg Kroah-Hartman]

From: Yajun Deng <yajun.deng@linux.dev>

[ Upstream commit 1b9fbe813016b08e08b22ddba4ddbf9cb1b04b00 ]

Add a if statements to avoid the warning.

Dan Carpenter report:
The patch faf482ca196a: "net: ipv4: Move ip_options_fragment() out of
loop" from Aug 23, 2021, leads to the following Smatch complaint:

    net/ipv4/ip_output.c:833 ip_do_fragment()
    warn: variable dereferenced before check 'iter.frag' (see line 828)

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: faf482ca196a ("net: ipv4: Move ip_options_fragment() out of loop")
Link: https://lore.kernel.org/netdev/20210830073802.GR7722@kadam/T/#t
Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/ipv4/ip_output.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index fb91a466b2d34..e77afaecc9818 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -833,7 +833,9 @@ int ip_do_fragment(struct net *net, struct sock *sk, struct sk_buff *skb,
 
 		/* Everything is OK. Generate! */
 		ip_fraglist_init(skb, iph, hlen, &iter);
-		ip_options_fragment(iter.frag);
+
+		if (iter.frag)
+			ip_options_fragment(iter.frag);
 
 		for (;;) {
 			/* Prepare header of the next frame,
-- 
2.34.1

[PATCH 5.10 082/100] ipv4: fix ip option filtering for locally generated fragments

[Greg Kroah-Hartman]

From: Jakub Kicinski <kuba@kernel.org>

[ Upstream commit 27a8caa59babb96c5890569e131bc0eb6d45daee ]

During IP fragmentation we sanitize IP options. This means overwriting
options which should not be copied with NOPs. Only the first fragment
has the original, full options.

ip_fraglist_prepare() copies the IP header and options from previous
fragment to the next one. Commit 19c3401a917b ("net: ipv4: place control
buffer handling away from fragmentation iterators") moved sanitizing
options before ip_fraglist_prepare() which means options are sanitized
and then overwritten again with the old values.

Fixing this is not enough, however, nor did the sanitization work
prior to aforementioned commit.

ip_options_fragment() (which does the sanitization) uses ipcb->opt.optlen
for the length of the options. ipcb->opt of fragments is not populated
(it's 0), only the head skb has the state properly built. So even when
called at the right time ip_options_fragment() does nothing. This seems
to date back all the way to v2.5.44 when the fast path for pre-fragmented
skbs had been introduced. Prior to that ip_options_build() would have been
called for every fragment (in fact ever since v2.5.44 the fragmentation
handing in ip_options_build() has been dead code, I'll clean it up in
-next).

In the original patch (see Link) caixf mentions fixing the handling
for fragments other than the second one, but I'm not sure how _any_
fragment could have had their options sanitized with the code
as it stood.

Tested with python (MTU on lo lowered to 1000 to force fragmentation):

  import socket
  s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
  s.setsockopt(socket.IPPROTO_IP, socket.IP_OPTIONS,
               bytearray([7,4,5,192, 20|0x80,4,1,0]))
  s.sendto(b'1'*2000, ('127.0.0.1', 1234))

Before:

IP (tos 0x0, ttl 64, id 1053, offset 0, flags [+], proto UDP (17), length 996, options (RR [bad length 4] [bad ptr 5] 192.148.4.1,,RA value 256))
    localhost.36500 > localhost.search-agent: UDP, length 2000
IP (tos 0x0, ttl 64, id 1053, offset 968, flags [+], proto UDP (17), length 996, options (RR [bad length 4] [bad ptr 5] 192.148.4.1,,RA value 256))
    localhost > localhost: udp
IP (tos 0x0, ttl 64, id 1053, offset 1936, flags [none], proto UDP (17), length 100, options (RR [bad length 4] [bad ptr 5] 192.148.4.1,,RA value 256))
    localhost > localhost: udp

After:

IP (tos 0x0, ttl 96, id 42549, offset 0, flags [+], proto UDP (17), length 996, options (RR [bad length 4] [bad ptr 5] 192.148.4.1,,RA value 256))
    localhost.51607 > localhost.search-agent: UDP, bad length 2000 > 960
IP (tos 0x0, ttl 96, id 42549, offset 968, flags [+], proto UDP (17), length 996, options (NOP,NOP,NOP,NOP,RA value 256))
    localhost > localhost: udp
IP (tos 0x0, ttl 96, id 42549, offset 1936, flags [none], proto UDP (17), length 100, options (NOP,NOP,NOP,NOP,RA value 256))
    localhost > localhost: udp

RA (20 | 0x80) is now copied as expected, RR (7) is "NOPed out".

Link: https://lore.kernel.org/netdev/20220107080559.122713-1-ooppublic@163.com/
Fixes: 19c3401a917b ("net: ipv4: place control buffer handling away from fragmentation iterators")
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: caixf <ooppublic@163.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/ipv4/ip_output.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index e77afaecc9818..4f76e8183f403 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -834,15 +834,24 @@ int ip_do_fragment(struct net *net, struct sock *sk, struct sk_buff *skb,
 		/* Everything is OK. Generate! */
 		ip_fraglist_init(skb, iph, hlen, &iter);
 
-		if (iter.frag)
-			ip_options_fragment(iter.frag);
-
 		for (;;) {
 			/* Prepare header of the next frame,
 			 * before previous one went down. */
 			if (iter.frag) {
+				bool first_frag = (iter.offset == 0);
+
 				IPCB(iter.frag)->flags = IPCB(skb)->flags;
 				ip_fraglist_prepare(skb, &iter);
+				if (first_frag && IPCB(skb)->opt.optlen) {
+					/* ipcb->opt is not populated for frags
+					 * coming from __ip_make_skb(),
+					 * ip_options_fragment() needs optlen
+					 */
+					IPCB(iter.frag)->opt.optlen =
+						IPCB(skb)->opt.optlen;
+					ip_options_fragment(iter.frag);
+					ip_send_check(iter.iph);
+				}
 			}
 
 			skb->tstamp = tstamp;
-- 
2.34.1

[PATCH 5.10 083/100] ibmvnic: init ->running_cap_crqs early

[Greg Kroah-Hartman]

From: Sukadev Bhattiprolu <sukadev@linux.ibm.com>

[ Upstream commit 151b6a5c06b678687f64f2d9a99fd04d5cd32b72 ]

We use ->running_cap_crqs to determine when the ibmvnic_tasklet() should
send out the next protocol message type. i.e when we get back responses
to all our QUERY_CAPABILITY CRQs we send out REQUEST_CAPABILITY crqs.
Similiary, when we get responses to all the REQUEST_CAPABILITY crqs, we
send out the QUERY_IP_OFFLOAD CRQ.

We currently increment ->running_cap_crqs as we send out each CRQ and
have the ibmvnic_tasklet() send out the next message type, when this
running_cap_crqs count drops to 0.

This assumes that all the CRQs of the current type were sent out before
the count drops to 0. However it is possible that we send out say 6 CRQs,
get preempted and receive all the 6 responses before we send out the
remaining CRQs. This can result in ->running_cap_crqs count dropping to
zero before all messages of the current type were sent and we end up
sending the next protocol message too early.

Instead initialize the ->running_cap_crqs upfront so the tasklet will
only send the next protocol message after all responses are received.

Use the cap_reqs local variable to also detect any discrepancy (either
now or in future) in the number of capability requests we actually send.

Currently only send_query_cap() is affected by this behavior (of sending
next message early) since it is called from the worker thread (during
reset) and from application thread (during ->ndo_open()) and they can be
preempted. send_request_cap() is only called from the tasklet  which
processes CRQ responses sequentially, is not be affected.  But to
maintain the existing symmtery with send_query_capability() we update
send_request_capability() also.

Fixes: 249168ad07cd ("ibmvnic: Make CRQ interrupt tasklet wait for all capabilities crqs")
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.ibm.com>
Reviewed-by: Dany Madden <drt@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/ibm/ibmvnic.c | 106 +++++++++++++++++++----------
 1 file changed, 71 insertions(+), 35 deletions(-)

diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index 4f99d97638248..232c68af4c60a 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -3401,11 +3401,25 @@ static void send_request_cap(struct ibmvnic_adapter *adapter, int retry)
 	struct device *dev = &adapter->vdev->dev;
 	union ibmvnic_crq crq;
 	int max_entries;
+	int cap_reqs;
+
+	/* We send out 6 or 7 REQUEST_CAPABILITY CRQs below (depending on
+	 * the PROMISC flag). Initialize this count upfront. When the tasklet
+	 * receives a response to all of these, it will send the next protocol
+	 * message (QUERY_IP_OFFLOAD).
+	 */
+	if (!(adapter->netdev->flags & IFF_PROMISC) ||
+	    adapter->promisc_supported)
+		cap_reqs = 7;
+	else
+		cap_reqs = 6;
 
 	if (!retry) {
 		/* Sub-CRQ entries are 32 byte long */
 		int entries_page = 4 * PAGE_SIZE / (sizeof(u64) * 4);
 
+		atomic_set(&adapter->running_cap_crqs, cap_reqs);
+
 		if (adapter->min_tx_entries_per_subcrq > entries_page ||
 		    adapter->min_rx_add_entries_per_subcrq > entries_page) {
 			dev_err(dev, "Fatal, invalid entries per sub-crq\n");
@@ -3466,44 +3480,45 @@ static void send_request_cap(struct ibmvnic_adapter *adapter, int retry)
 					adapter->opt_rx_comp_queues;
 
 		adapter->req_rx_add_queues = adapter->max_rx_add_queues;
+	} else {
+		atomic_add(cap_reqs, &adapter->running_cap_crqs);
 	}
-
 	memset(&crq, 0, sizeof(crq));
 	crq.request_capability.first = IBMVNIC_CRQ_CMD;
 	crq.request_capability.cmd = REQUEST_CAPABILITY;
 
 	crq.request_capability.capability = cpu_to_be16(REQ_TX_QUEUES);
 	crq.request_capability.number = cpu_to_be64(adapter->req_tx_queues);
-	atomic_inc(&adapter->running_cap_crqs);
+	cap_reqs--;
 	ibmvnic_send_crq(adapter, &crq);
 
 	crq.request_capability.capability = cpu_to_be16(REQ_RX_QUEUES);
 	crq.request_capability.number = cpu_to_be64(adapter->req_rx_queues);
-	atomic_inc(&adapter->running_cap_crqs);
+	cap_reqs--;
 	ibmvnic_send_crq(adapter, &crq);
 
 	crq.request_capability.capability = cpu_to_be16(REQ_RX_ADD_QUEUES);
 	crq.request_capability.number = cpu_to_be64(adapter->req_rx_add_queues);
-	atomic_inc(&adapter->running_cap_crqs);
+	cap_reqs--;
 	ibmvnic_send_crq(adapter, &crq);
 
 	crq.request_capability.capability =
 	    cpu_to_be16(REQ_TX_ENTRIES_PER_SUBCRQ);
 	crq.request_capability.number =
 	    cpu_to_be64(adapter->req_tx_entries_per_subcrq);
-	atomic_inc(&adapter->running_cap_crqs);
+	cap_reqs--;
 	ibmvnic_send_crq(adapter, &crq);
 
 	crq.request_capability.capability =
 	    cpu_to_be16(REQ_RX_ADD_ENTRIES_PER_SUBCRQ);
 	crq.request_capability.number =
 	    cpu_to_be64(adapter->req_rx_add_entries_per_subcrq);
-	atomic_inc(&adapter->running_cap_crqs);
+	cap_reqs--;
 	ibmvnic_send_crq(adapter, &crq);
 
 	crq.request_capability.capability = cpu_to_be16(REQ_MTU);
 	crq.request_capability.number = cpu_to_be64(adapter->req_mtu);
-	atomic_inc(&adapter->running_cap_crqs);
+	cap_reqs--;
 	ibmvnic_send_crq(adapter, &crq);
 
 	if (adapter->netdev->flags & IFF_PROMISC) {
@@ -3511,16 +3526,21 @@ static void send_request_cap(struct ibmvnic_adapter *adapter, int retry)
 			crq.request_capability.capability =
 			    cpu_to_be16(PROMISC_REQUESTED);
 			crq.request_capability.number = cpu_to_be64(1);
-			atomic_inc(&adapter->running_cap_crqs);
+			cap_reqs--;
 			ibmvnic_send_crq(adapter, &crq);
 		}
 	} else {
 		crq.request_capability.capability =
 		    cpu_to_be16(PROMISC_REQUESTED);
 		crq.request_capability.number = cpu_to_be64(0);
-		atomic_inc(&adapter->running_cap_crqs);
+		cap_reqs--;
 		ibmvnic_send_crq(adapter, &crq);
 	}
+
+	/* Keep at end to catch any discrepancy between expected and actual
+	 * CRQs sent.
+	 */
+	WARN_ON(cap_reqs != 0);
 }
 
 static int pending_scrq(struct ibmvnic_adapter *adapter,
@@ -3953,118 +3973,132 @@ static void send_query_map(struct ibmvnic_adapter *adapter)
 static void send_query_cap(struct ibmvnic_adapter *adapter)
 {
 	union ibmvnic_crq crq;
+	int cap_reqs;
+
+	/* We send out 25 QUERY_CAPABILITY CRQs below.  Initialize this count
+	 * upfront. When the tasklet receives a response to all of these, it
+	 * can send out the next protocol messaage (REQUEST_CAPABILITY).
+	 */
+	cap_reqs = 25;
+
+	atomic_set(&adapter->running_cap_crqs, cap_reqs);
 
-	atomic_set(&adapter->running_cap_crqs, 0);
 	memset(&crq, 0, sizeof(crq));
 	crq.query_capability.first = IBMVNIC_CRQ_CMD;
 	crq.query_capability.cmd = QUERY_CAPABILITY;
 
 	crq.query_capability.capability = cpu_to_be16(MIN_TX_QUEUES);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability = cpu_to_be16(MIN_RX_QUEUES);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability = cpu_to_be16(MIN_RX_ADD_QUEUES);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability = cpu_to_be16(MAX_TX_QUEUES);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability = cpu_to_be16(MAX_RX_QUEUES);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability = cpu_to_be16(MAX_RX_ADD_QUEUES);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability =
 	    cpu_to_be16(MIN_TX_ENTRIES_PER_SUBCRQ);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability =
 	    cpu_to_be16(MIN_RX_ADD_ENTRIES_PER_SUBCRQ);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability =
 	    cpu_to_be16(MAX_TX_ENTRIES_PER_SUBCRQ);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability =
 	    cpu_to_be16(MAX_RX_ADD_ENTRIES_PER_SUBCRQ);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability = cpu_to_be16(TCP_IP_OFFLOAD);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability = cpu_to_be16(PROMISC_SUPPORTED);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability = cpu_to_be16(MIN_MTU);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability = cpu_to_be16(MAX_MTU);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability = cpu_to_be16(MAX_MULTICAST_FILTERS);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability = cpu_to_be16(VLAN_HEADER_INSERTION);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability = cpu_to_be16(RX_VLAN_HEADER_INSERTION);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability = cpu_to_be16(MAX_TX_SG_ENTRIES);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability = cpu_to_be16(RX_SG_SUPPORTED);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability = cpu_to_be16(OPT_TX_COMP_SUB_QUEUES);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability = cpu_to_be16(OPT_RX_COMP_QUEUES);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability =
 			cpu_to_be16(OPT_RX_BUFADD_Q_PER_RX_COMP_Q);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability =
 			cpu_to_be16(OPT_TX_ENTRIES_PER_SUBCRQ);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability =
 			cpu_to_be16(OPT_RXBA_ENTRIES_PER_SUBCRQ);
-	atomic_inc(&adapter->running_cap_crqs);
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
 
 	crq.query_capability.capability = cpu_to_be16(TX_RX_DESC_REQ);
-	atomic_inc(&adapter->running_cap_crqs);
+
 	ibmvnic_send_crq(adapter, &crq);
+	cap_reqs--;
+
+	/* Keep at end to catch any discrepancy between expected and actual
+	 * CRQs sent.
+	 */
+	WARN_ON(cap_reqs != 0);
 }
 
 static void send_query_ip_offload(struct ibmvnic_adapter *adapter)
@@ -4369,6 +4403,8 @@ static void handle_request_cap_rsp(union ibmvnic_crq *crq,
 	char *name;
 
 	atomic_dec(&adapter->running_cap_crqs);
+	netdev_dbg(adapter->netdev, "Outstanding request-caps: %d\n",
+		   atomic_read(&adapter->running_cap_crqs));
 	switch (be16_to_cpu(crq->request_capability_rsp.capability)) {
 	case REQ_TX_QUEUES:
 		req_value = &adapter->req_tx_queues;
-- 
2.34.1

[PATCH 5.10 084/100] ibmvnic: dont spin in tasklet

[Greg Kroah-Hartman]

From: Sukadev Bhattiprolu <sukadev@linux.ibm.com>

[ Upstream commit 48079e7fdd0269d66b1d7d66ae88bd03162464ad ]

ibmvnic_tasklet() continuously spins waiting for responses to all
capability requests. It does this to avoid encountering an error
during initialization of the vnic. However if there is a bug in the
VIOS and we do not receive a response to one or more queries the
tasklet ends up spinning continuously leading to hard lock ups.

If we fail to receive a message from the VIOS it is reasonable to
timeout the login attempt rather than spin indefinitely in the tasklet.

Fixes: 249168ad07cd ("ibmvnic: Make CRQ interrupt tasklet wait for all capabilities crqs")
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.ibm.com>
Reviewed-by: Dany Madden <drt@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/ibm/ibmvnic.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index 232c68af4c60a..c7be7ab131b19 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -5075,12 +5075,6 @@ static void ibmvnic_tasklet(struct tasklet_struct *t)
 			ibmvnic_handle_crq(crq, adapter);
 			crq->generic.first = 0;
 		}
-
-		/* remain in tasklet until all
-		 * capabilities responses are received
-		 */
-		if (!adapter->wait_capability)
-			done = true;
 	}
 	/* if capabilities CRQ's were sent in this tasklet, the following
 	 * tasklet must wait until all responses are received
-- 
2.34.1

[PATCH 5.10 085/100] video: hyperv_fb: Fix validation of screen resolution

[Greg Kroah-Hartman]

From: Michael Kelley <mikelley@microsoft.com>

[ Upstream commit 9ff5549b1d1d3c3a9d71220d44bd246586160f1d ]

In the WIN10 version of the Synthetic Video protocol with Hyper-V,
Hyper-V reports a list of supported resolutions as part of the protocol
negotiation. The driver calculates the maximum width and height from
the list of resolutions, and uses those maximums to validate any screen
resolution specified in the video= option on the kernel boot line.

This method of validation is incorrect. For example, the list of
supported resolutions could contain 1600x1200 and 1920x1080, both of
which fit in an 8 Mbyte frame buffer.  But calculating the max width
and height yields 1920 and 1200, and 1920x1200 resolution does not fit
in an 8 Mbyte frame buffer.  Unfortunately, this resolution is accepted,
causing a kernel fault when the driver accesses memory outside the
frame buffer.

Instead, validate the specified screen resolution by calculating
its size, and comparing against the frame buffer size.  Delete the
code for calculating the max width and height from the list of
resolutions, since these max values have no use.  Also add the
frame buffer size to the info message to aid in understanding why
a resolution might be rejected.

Fixes: 67e7cdb4829d ("video: hyperv: hyperv_fb: Obtain screen resolution from Hyper-V host")
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Acked-by: Helge Deller <deller@gmx.de>
Link: https://lore.kernel.org/r/1642360711-2335-1-git-send-email-mikelley@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/video/fbdev/hyperv_fb.c | 16 +++-------------
 1 file changed, 3 insertions(+), 13 deletions(-)

diff --git a/drivers/video/fbdev/hyperv_fb.c b/drivers/video/fbdev/hyperv_fb.c
index 4dc9077dd2ac0..3c309ab208874 100644
--- a/drivers/video/fbdev/hyperv_fb.c
+++ b/drivers/video/fbdev/hyperv_fb.c
@@ -286,8 +286,6 @@ struct hvfb_par {
 
 static uint screen_width = HVFB_WIDTH;
 static uint screen_height = HVFB_HEIGHT;
-static uint screen_width_max = HVFB_WIDTH;
-static uint screen_height_max = HVFB_HEIGHT;
 static uint screen_depth;
 static uint screen_fb_size;
 static uint dio_fb_size; /* FB size for deferred IO */
@@ -581,7 +579,6 @@ static int synthvid_get_supported_resolution(struct hv_device *hdev)
 	int ret = 0;
 	unsigned long t;
 	u8 index;
-	int i;
 
 	memset(msg, 0, sizeof(struct synthvid_msg));
 	msg->vid_hdr.type = SYNTHVID_RESOLUTION_REQUEST;
@@ -612,13 +609,6 @@ static int synthvid_get_supported_resolution(struct hv_device *hdev)
 		goto out;
 	}
 
-	for (i = 0; i < msg->resolution_resp.resolution_count; i++) {
-		screen_width_max = max_t(unsigned int, screen_width_max,
-		    msg->resolution_resp.supported_resolution[i].width);
-		screen_height_max = max_t(unsigned int, screen_height_max,
-		    msg->resolution_resp.supported_resolution[i].height);
-	}
-
 	screen_width =
 		msg->resolution_resp.supported_resolution[index].width;
 	screen_height =
@@ -940,7 +930,7 @@ static void hvfb_get_option(struct fb_info *info)
 
 	if (x < HVFB_WIDTH_MIN || y < HVFB_HEIGHT_MIN ||
 	    (synthvid_ver_ge(par->synthvid_version, SYNTHVID_VERSION_WIN10) &&
-	    (x > screen_width_max || y > screen_height_max)) ||
+	    (x * y * screen_depth / 8 > screen_fb_size)) ||
 	    (par->synthvid_version == SYNTHVID_VERSION_WIN8 &&
 	     x * y * screen_depth / 8 > SYNTHVID_FB_SIZE_WIN8) ||
 	    (par->synthvid_version == SYNTHVID_VERSION_WIN7 &&
@@ -1193,8 +1183,8 @@ static int hvfb_probe(struct hv_device *hdev,
 	}
 
 	hvfb_get_option(info);
-	pr_info("Screen resolution: %dx%d, Color depth: %d\n",
-		screen_width, screen_height, screen_depth);
+	pr_info("Screen resolution: %dx%d, Color depth: %d, Frame buffer size: %d\n",
+		screen_width, screen_height, screen_depth, screen_fb_size);
 
 	ret = hvfb_getmem(hdev, info);
 	if (ret) {
-- 
2.34.1

[PATCH 5.10 086/100] drm/msm/hdmi: Fix missing put_device() call in msm_hdmi_get_phy

[Greg Kroah-Hartman]

From: Miaoqian Lin <linmq006@gmail.com>

[ Upstream commit 774fe0cd838d1b1419d41ab4ea0613c80d4ecbd7 ]

The reference taken by 'of_find_device_by_node()' must be released when
not needed anymore.
Add the corresponding 'put_device()' in the error handling path.

Fixes: e00012b256d4 ("drm/msm/hdmi: Make HDMI core get its PHY")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20220107085026.23831-1-linmq006@gmail.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/msm/hdmi/hdmi.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
index 737453b6e5966..94f948ef279d1 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
@@ -97,10 +97,15 @@ static int msm_hdmi_get_phy(struct hdmi *hdmi)
 
 	of_node_put(phy_node);
 
-	if (!phy_pdev || !hdmi->phy) {
+	if (!phy_pdev) {
 		DRM_DEV_ERROR(&pdev->dev, "phy driver is not ready\n");
 		return -EPROBE_DEFER;
 	}
+	if (!hdmi->phy) {
+		DRM_DEV_ERROR(&pdev->dev, "phy driver is not ready\n");
+		put_device(&phy_pdev->dev);
+		return -EPROBE_DEFER;
+	}
 
 	hdmi->phy_dev = get_device(&phy_pdev->dev);
 
-- 
2.34.1

[PATCH 5.10 087/100] drm/msm/dpu: invalid parameter check in dpu_setup_dspp_pcc

[Greg Kroah-Hartman]

From: José Expósito <jose.exposito89@gmail.com>

[ Upstream commit 170b22234d5495f5e0844246e23f004639ee89ba ]

The function performs a check on the "ctx" input parameter, however, it
is used before the check.

Initialize the "base" variable after the sanity check to avoid a
possible NULL pointer dereference.

Fixes: 4259ff7ae509e ("drm/msm/dpu: add support for pcc color block in dpu driver")
Addresses-Coverity-ID: 1493866 ("Null pointer dereference")
Signed-off-by: José Expósito <jose.exposito89@gmail.com>
Link: https://lore.kernel.org/r/20220109192431.135949-1-jose.exposito89@gmail.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c
index a7a24539921f3..a6efc11eba93f 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c
@@ -26,9 +26,16 @@ static void dpu_setup_dspp_pcc(struct dpu_hw_dspp *ctx,
 		struct dpu_hw_pcc_cfg *cfg)
 {
 
-	u32 base = ctx->cap->sblk->pcc.base;
+	u32 base;
 
-	if (!ctx || !base) {
+	if (!ctx) {
+		DRM_ERROR("invalid ctx %pK\n", ctx);
+		return;
+	}
+
+	base = ctx->cap->sblk->pcc.base;
+
+	if (!base) {
 		DRM_ERROR("invalid ctx %pK pcc base 0x%x\n", ctx, base);
 		return;
 	}
-- 
2.34.1

[PATCH 5.10 088/100] yam: fix a memory leak in yam_siocdevprivate()

[Greg Kroah-Hartman]

From: Hangyu Hua <hbh25y@gmail.com>

[ Upstream commit 29eb31542787e1019208a2e1047bb7c76c069536 ]

ym needs to be free when ym->cmd != SIOCYAMSMCS.

Fixes: 0781168e23a2 ("yam: fix a missing-check bug")
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/hamradio/yam.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/hamradio/yam.c b/drivers/net/hamradio/yam.c
index 5ab53e9942f30..5d30b3e1806ab 100644
--- a/drivers/net/hamradio/yam.c
+++ b/drivers/net/hamradio/yam.c
@@ -951,9 +951,7 @@ static int yam_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 				 sizeof(struct yamdrv_ioctl_mcs));
 		if (IS_ERR(ym))
 			return PTR_ERR(ym);
-		if (ym->cmd != SIOCYAMSMCS)
-			return -EINVAL;
-		if (ym->bitrate > YAM_MAXBITRATE) {
+		if (ym->cmd != SIOCYAMSMCS || ym->bitrate > YAM_MAXBITRATE) {
 			kfree(ym);
 			return -EINVAL;
 		}
-- 
2.34.1

[PATCH 5.10 089/100] net: cpsw: Properly initialise struct page_pool_params

[Greg Kroah-Hartman]

From: Toke Høiland-Jørgensen <toke@redhat.com>

[ Upstream commit c63003e3d99761afb280add3b30de1cf30fa522b ]

The cpsw driver didn't properly initialise the struct page_pool_params
before calling page_pool_create(), which leads to crashes after the struct
has been expanded with new parameters.

The second Fixes tag below is where the buggy code was introduced, but
because the code was moved around this patch will only apply on top of the
commit in the first Fixes tag.

Fixes: c5013ac1dd0e ("net: ethernet: ti: cpsw: move set of common functions in cpsw_priv")
Fixes: 9ed4050c0d75 ("net: ethernet: ti: cpsw: add XDP support")
Reported-by: Colin Foster <colin.foster@in-advantage.com>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Tested-by: Colin Foster <colin.foster@in-advantage.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/ti/cpsw_priv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/ti/cpsw_priv.c b/drivers/net/ethernet/ti/cpsw_priv.c
index 424e644724e46..e74f2e95a46eb 100644
--- a/drivers/net/ethernet/ti/cpsw_priv.c
+++ b/drivers/net/ethernet/ti/cpsw_priv.c
@@ -1144,7 +1144,7 @@ int cpsw_fill_rx_channels(struct cpsw_priv *priv)
 static struct page_pool *cpsw_create_page_pool(struct cpsw_common *cpsw,
 					       int size)
 {
-	struct page_pool_params pp_params;
+	struct page_pool_params pp_params = {};
 	struct page_pool *pool;
 
 	pp_params.order = 0;
-- 
2.34.1

[PATCH 5.10 090/100] net: hns3: handle empty unknown interrupt for VF

[Greg Kroah-Hartman]

From: Yufeng Mo <moyufeng@huawei.com>

[ Upstream commit 2f61353cd2f789a4229b6f5c1c24a40a613357bb ]

Since some interrupt states may be cleared by hardware, the driver
may receive an empty interrupt. Currently, the VF driver directly
disables the vector0 interrupt in this case. As a result, the VF
is unavailable. Therefore, the vector0 interrupt should be enabled
in this case.

Fixes: b90fcc5bd904 ("net: hns3: add reset handling for VF when doing Core/Global/IMP reset")
Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
index 6e7da1dc2e8c3..d6580e942724d 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
@@ -2382,8 +2382,7 @@ static irqreturn_t hclgevf_misc_irq_handle(int irq, void *data)
 		break;
 	}
 
-	if (event_cause != HCLGEVF_VECTOR0_EVENT_OTHER)
-		hclgevf_enable_vector(&hdev->misc_vector, true);
+	hclgevf_enable_vector(&hdev->misc_vector, true);
 
 	return IRQ_HANDLED;
 }
-- 
2.34.1

[PATCH 5.10 091/100] Revert "ipv6: Honor all IPv6 PIO Valid Lifetime values"

[Greg Kroah-Hartman]

From: Guillaume Nault <gnault@redhat.com>

[ Upstream commit 36268983e90316b37000a005642af42234dabb36 ]

This reverts commit b75326c201242de9495ff98e5d5cff41d7fc0d9d.

This commit breaks Linux compatibility with USGv6 tests. The RFC this
commit was based on is actually an expired draft: no published RFC
currently allows the new behaviour it introduced.

Without full IETF endorsement, the flash renumbering scenario this
patch was supposed to enable is never going to work, as other IPv6
equipements on the same LAN will keep the 2 hours limit.

Fixes: b75326c20124 ("ipv6: Honor all IPv6 PIO Valid Lifetime values")
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/net/addrconf.h |  2 ++
 net/ipv6/addrconf.c    | 27 ++++++++++++++++++++-------
 2 files changed, 22 insertions(+), 7 deletions(-)

diff --git a/include/net/addrconf.h b/include/net/addrconf.h
index 78ea3e332688f..e7ce719838b5e 100644
--- a/include/net/addrconf.h
+++ b/include/net/addrconf.h
@@ -6,6 +6,8 @@
 #define RTR_SOLICITATION_INTERVAL	(4*HZ)
 #define RTR_SOLICITATION_MAX_INTERVAL	(3600*HZ)	/* 1 hour */
 
+#define MIN_VALID_LIFETIME		(2*3600)	/* 2 hours */
+
 #define TEMP_VALID_LIFETIME		(7*86400)
 #define TEMP_PREFERRED_LIFETIME		(86400)
 #define REGEN_MAX_RETRY			(3)
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 29526937077b3..4dde49e628fab 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2577,7 +2577,7 @@ int addrconf_prefix_rcv_add_addr(struct net *net, struct net_device *dev,
 				 __u32 valid_lft, u32 prefered_lft)
 {
 	struct inet6_ifaddr *ifp = ipv6_get_ifaddr(net, addr, dev, 1);
-	int create = 0;
+	int create = 0, update_lft = 0;
 
 	if (!ifp && valid_lft) {
 		int max_addresses = in6_dev->cnf.max_addresses;
@@ -2621,19 +2621,32 @@ int addrconf_prefix_rcv_add_addr(struct net *net, struct net_device *dev,
 		unsigned long now;
 		u32 stored_lft;
 
-		/* Update lifetime (RFC4862 5.5.3 e)
-		 * We deviate from RFC4862 by honoring all Valid Lifetimes to
-		 * improve the reaction of SLAAC to renumbering events
-		 * (draft-gont-6man-slaac-renum-06, Section 4.2)
-		 */
+		/* update lifetime (RFC2462 5.5.3 e) */
 		spin_lock_bh(&ifp->lock);
 		now = jiffies;
 		if (ifp->valid_lft > (now - ifp->tstamp) / HZ)
 			stored_lft = ifp->valid_lft - (now - ifp->tstamp) / HZ;
 		else
 			stored_lft = 0;
-
 		if (!create && stored_lft) {
+			const u32 minimum_lft = min_t(u32,
+				stored_lft, MIN_VALID_LIFETIME);
+			valid_lft = max(valid_lft, minimum_lft);
+
+			/* RFC4862 Section 5.5.3e:
+			 * "Note that the preferred lifetime of the
+			 *  corresponding address is always reset to
+			 *  the Preferred Lifetime in the received
+			 *  Prefix Information option, regardless of
+			 *  whether the valid lifetime is also reset or
+			 *  ignored."
+			 *
+			 * So we should always update prefered_lft here.
+			 */
+			update_lft = 1;
+		}
+
+		if (update_lft) {
 			ifp->valid_lft = valid_lft;
 			ifp->prefered_lft = prefered_lft;
 			ifp->tstamp = now;
-- 
2.34.1

[PATCH 5.10 092/100] net: bridge: vlan: fix single net device option dumping

[Greg Kroah-Hartman]

From: Nikolay Aleksandrov <nikolay@nvidia.com>

[ Upstream commit dcb2c5c6ca9b9177f04abaf76e5a983d177c9414 ]

When dumping vlan options for a single net device we send the same
entries infinitely because user-space expects a 0 return at the end but
we keep returning skb->len and restarting the dump on retry. Fix it by
returning the value from br_vlan_dump_dev() if it completed or there was
an error. The only case that must return skb->len is when the dump was
incomplete and needs to continue (-EMSGSIZE).

Reported-by: Benjamin Poirier <bpoirier@nvidia.com>
Fixes: 8dcea187088b ("net: bridge: vlan: add rtm definitions and dump support")
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/bridge/br_vlan.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c
index 08c77418c687b..1f508d998fb2d 100644
--- a/net/bridge/br_vlan.c
+++ b/net/bridge/br_vlan.c
@@ -1873,7 +1873,8 @@ static int br_vlan_rtm_dump(struct sk_buff *skb, struct netlink_callback *cb)
 			goto out_err;
 		}
 		err = br_vlan_dump_dev(dev, skb, cb, dump_flags);
-		if (err && err != -EMSGSIZE)
+		/* if the dump completed without an error we return 0 here */
+		if (err != -EMSGSIZE)
 			goto out_err;
 	} else {
 		for_each_netdev_rcu(net, dev) {
-- 
2.34.1

[PATCH 5.10 093/100] ipv4: raw: lock the socket in raw_bind()

[Greg Kroah-Hartman]

From: Eric Dumazet <edumazet@google.com>

[ Upstream commit 153a0d187e767c68733b8e9f46218eb1f41ab902 ]

For some reason, raw_bind() forgot to lock the socket.

BUG: KCSAN: data-race in __ip4_datagram_connect / raw_bind

write to 0xffff8881170d4308 of 4 bytes by task 5466 on cpu 0:
 raw_bind+0x1b0/0x250 net/ipv4/raw.c:739
 inet_bind+0x56/0xa0 net/ipv4/af_inet.c:443
 __sys_bind+0x14b/0x1b0 net/socket.c:1697
 __do_sys_bind net/socket.c:1708 [inline]
 __se_sys_bind net/socket.c:1706 [inline]
 __x64_sys_bind+0x3d/0x50 net/socket.c:1706
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff8881170d4308 of 4 bytes by task 5468 on cpu 1:
 __ip4_datagram_connect+0xb7/0x7b0 net/ipv4/datagram.c:39
 ip4_datagram_connect+0x2a/0x40 net/ipv4/datagram.c:89
 inet_dgram_connect+0x107/0x190 net/ipv4/af_inet.c:576
 __sys_connect_file net/socket.c:1900 [inline]
 __sys_connect+0x197/0x1b0 net/socket.c:1917
 __do_sys_connect net/socket.c:1927 [inline]
 __se_sys_connect net/socket.c:1924 [inline]
 __x64_sys_connect+0x3d/0x50 net/socket.c:1924
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x00000000 -> 0x0003007f

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 5468 Comm: syz-executor.5 Not tainted 5.17.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/ipv4/raw.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index 7d26e0f8bdaeb..5d95f80314f95 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -721,6 +721,7 @@ static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 	int ret = -EINVAL;
 	int chk_addr_ret;
 
+	lock_sock(sk);
 	if (sk->sk_state != TCP_CLOSE || addr_len < sizeof(struct sockaddr_in))
 		goto out;
 
@@ -740,7 +741,9 @@ static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 		inet->inet_saddr = 0;  /* Use device */
 	sk_dst_reset(sk);
 	ret = 0;
-out:	return ret;
+out:
+	release_sock(sk);
+	return ret;
 }
 
 /*
-- 
2.34.1

[PATCH 5.10 094/100] ipv4: tcp: send zero IPID in SYNACK messages

[Greg Kroah-Hartman]

From: Eric Dumazet <edumazet@google.com>

[ Upstream commit 970a5a3ea86da637471d3cd04d513a0755aba4bf ]

In commit 431280eebed9 ("ipv4: tcp: send zero IPID for RST and
ACK sent in SYN-RECV and TIME-WAIT state") we took care of some
ctl packets sent by TCP.

It turns out we need to use a similar strategy for SYNACK packets.

By default, they carry IP_DF and IPID==0, but there are ways
to ask them to use the hashed IP ident generator and thus
be used to build off-path attacks.
(Ref: Off-Path TCP Exploits of the Mixed IPID Assignment)

One of this way is to force (before listener is started)
echo 1 >/proc/sys/net/ipv4/ip_no_pmtu_disc

Another way is using forged ICMP ICMP_FRAG_NEEDED
with a very small MTU (like 68) to force a false return from
ip_dont_fragment()

In this patch, ip_build_and_send_pkt() uses the following
heuristics.

1) Most SYNACK packets are smaller than IPV4_MIN_MTU and therefore
can use IP_DF regardless of the listener or route pmtu setting.

2) In case the SYNACK packet is bigger than IPV4_MIN_MTU,
we use prandom_u32() generator instead of the IPv4 hashed ident one.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Ray Che <xijiache@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Cc: Geoff Alexander <alexandg@cs.unm.edu>
Cc: Willy Tarreau <w@1wt.eu>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/ipv4/ip_output.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 4f76e8183f403..5e48b3d3a00db 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -162,12 +162,19 @@ int ip_build_and_send_pkt(struct sk_buff *skb, const struct sock *sk,
 	iph->daddr    = (opt && opt->opt.srr ? opt->opt.faddr : daddr);
 	iph->saddr    = saddr;
 	iph->protocol = sk->sk_protocol;
-	if (ip_dont_fragment(sk, &rt->dst)) {
+	/* Do not bother generating IPID for small packets (eg SYNACK) */
+	if (skb->len <= IPV4_MIN_MTU || ip_dont_fragment(sk, &rt->dst)) {
 		iph->frag_off = htons(IP_DF);
 		iph->id = 0;
 	} else {
 		iph->frag_off = 0;
-		__ip_select_ident(net, iph, 1);
+		/* TCP packets here are SYNACK with fat IPv4/TCP options.
+		 * Avoid using the hashed IP ident generator.
+		 */
+		if (sk->sk_protocol == IPPROTO_TCP)
+			iph->id = (__force __be16)prandom_u32();
+		else
+			__ip_select_ident(net, iph, 1);
 	}
 
 	if (opt && opt->opt.optlen) {
-- 
2.34.1

[PATCH 5.10 095/100] ipv4: remove sparse error in ip_neigh_gw4()

[Greg Kroah-Hartman]

From: Eric Dumazet <edumazet@google.com>

[ Upstream commit 3c42b2019863b327caa233072c50739d4144dd16 ]

./include/net/route.h:373:48: warning: incorrect type in argument 2 (different base types)
./include/net/route.h:373:48:    expected unsigned int [usertype] key
./include/net/route.h:373:48:    got restricted __be32 [usertype] daddr

Fixes: 5c9f7c1dfc2e ("ipv4: Add helpers for neigh lookup for nexthop")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20220127013404.1279313-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/net/route.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/net/route.h b/include/net/route.h
index ff021cab657e5..a07c277cd33e8 100644
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -369,7 +369,7 @@ static inline struct neighbour *ip_neigh_gw4(struct net_device *dev,
 {
 	struct neighbour *neigh;
 
-	neigh = __ipv4_neigh_lookup_noref(dev, daddr);
+	neigh = __ipv4_neigh_lookup_noref(dev, (__force u32)daddr);
 	if (unlikely(!neigh))
 		neigh = __neigh_create(&arp_tbl, &daddr, dev, false);
 
-- 
2.34.1

[PATCH 5.10 096/100] net: bridge: vlan: fix memory leak in __allowed_ingress

[Greg Kroah-Hartman]

From: Tim Yi <tim.yi@pica8.com>

[ Upstream commit fd20d9738395cf8e27d0a17eba34169699fccdff ]

When using per-vlan state, if vlan snooping and stats are disabled,
untagged or priority-tagged ingress frame will go to check pvid state.
If the port state is forwarding and the pvid state is not
learning/forwarding, untagged or priority-tagged frame will be dropped
but skb memory is not freed.
Should free skb when __allowed_ingress returns false.

Fixes: a580c76d534c ("net: bridge: vlan: add per-vlan state")
Signed-off-by: Tim Yi <tim.yi@pica8.com>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Link: https://lore.kernel.org/r/20220127074953.12632-1-tim.yi@pica8.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/bridge/br_vlan.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c
index 1f508d998fb2d..852f4b54e8811 100644
--- a/net/bridge/br_vlan.c
+++ b/net/bridge/br_vlan.c
@@ -543,10 +543,10 @@ static bool __allowed_ingress(const struct net_bridge *br,
 		if (!br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) {
 			if (*state == BR_STATE_FORWARDING) {
 				*state = br_vlan_get_pvid_state(vg);
-				return br_vlan_state_allowed(*state, true);
-			} else {
-				return true;
+				if (!br_vlan_state_allowed(*state, true))
+					goto drop;
 			}
+			return true;
 		}
 	}
 	v = br_vlan_find(vg, *vid);
-- 
2.34.1

[PATCH 5.10 097/100] dt-bindings: can: tcan4x5x: fix mram-cfg RX FIFO config

[Greg Kroah-Hartman]

From: Marc Kleine-Budde <mkl@pengutronix.de>

commit 17a30422621c0e04cb6060d20d7edcefd7463347 upstream.

This tcan4x5x only comes with 2K of MRAM, a RX FIFO with a dept of 32
doesn't fit into the MRAM. Use a depth of 16 instead.

Fixes: 4edd396a1911 ("dt-bindings: can: tcan4x5x: Add DT bindings for TCAN4x5X driver")
Link: https://lore.kernel.org/all/20220119062951.2939851-1-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 Documentation/devicetree/bindings/net/can/tcan4x5x.txt |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/Documentation/devicetree/bindings/net/can/tcan4x5x.txt
+++ b/Documentation/devicetree/bindings/net/can/tcan4x5x.txt
@@ -31,7 +31,7 @@ tcan4x5x: tcan4x5x@0 {
 		#address-cells = <1>;
 		#size-cells = <1>;
 		spi-max-frequency = <10000000>;
-		bosch,mram-cfg = <0x0 0 0 32 0 0 1 1>;
+		bosch,mram-cfg = <0x0 0 0 16 0 0 1 1>;
 		interrupt-parent = <&gpio1>;
 		interrupts = <14 IRQ_TYPE_LEVEL_LOW>;
 		device-state-gpios = <&gpio3 21 GPIO_ACTIVE_HIGH>;

[PATCH 5.10 098/100] usr/include/Makefile: add linux/nfc.h to the compile-test coverage

[Greg Kroah-Hartman]

From: Dmitry V. Levin <ldv@altlinux.org>

commit 10756dc5b02bff370ddd351d7744bc99ada659c2 upstream.

As linux/nfc.h userspace compilation was finally fixed by commits
79b69a83705e ("nfc: uapi: use kernel size_t to fix user-space builds")
and 7175f02c4e5f ("uapi: fix linux/nfc.h userspace compilation errors"),
there is no need to keep the compile-test exception for it in
usr/include/Makefile.

Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 usr/include/Makefile |    1 -
 1 file changed, 1 deletion(-)

--- a/usr/include/Makefile
+++ b/usr/include/Makefile
@@ -34,7 +34,6 @@ no-header-test += linux/hdlc/ioctl.h
 no-header-test += linux/ivtv.h
 no-header-test += linux/kexec.h
 no-header-test += linux/matroxfb.h
-no-header-test += linux/nfc.h
 no-header-test += linux/omap3isp.h
 no-header-test += linux/omapfb.h
 no-header-test += linux/patchkey.h

[PATCH 5.10 099/100] fsnotify: invalidate dcache before IN_DELETE event

[Greg Kroah-Hartman]

From: Amir Goldstein <amir73il@gmail.com>

commit a37d9a17f099072fe4d3a9048b0321978707a918 upstream.

Apparently, there are some applications that use IN_DELETE event as an
invalidation mechanism and expect that if they try to open a file with
the name reported with the delete event, that it should not contain the
content of the deleted file.

Commit 49246466a989 ("fsnotify: move fsnotify_nameremove() hook out of
d_delete()") moved the fsnotify delete hook before d_delete() so fsnotify
will have access to a positive dentry.

This allowed a race where opening the deleted file via cached dentry
is now possible after receiving the IN_DELETE event.

To fix the regression, create a new hook fsnotify_delete() that takes
the unlinked inode as an argument and use a helper d_delete_notify() to
pin the inode, so we can pass it to fsnotify_delete() after d_delete().

Backporting hint: this regression is from v5.3. Although patch will
apply with only trivial conflicts to v5.4 and v5.10, it won't build,
because fsnotify_delete() implementation is different in each of those
versions (see fsnotify_link()).

A follow up patch will fix the fsnotify_unlink/rmdir() calls in pseudo
filesystem that do not need to call d_delete().

Link: https://lore.kernel.org/r/20220120215305.282577-1-amir73il@gmail.com
Reported-by: Ivan Delalande <colona@arista.com>
Link: https://lore.kernel.org/linux-fsdevel/YeNyzoDM5hP5LtGW@visor/
Fixes: 49246466a989 ("fsnotify: move fsnotify_nameremove() hook out of d_delete()")
Cc: stable@vger.kernel.org # v5.3+
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/btrfs/ioctl.c         |    6 +----
 fs/namei.c               |   10 ++++-----
 include/linux/fsnotify.h |   48 +++++++++++++++++++++++++++++++++++++++++------
 3 files changed, 49 insertions(+), 15 deletions(-)

--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -3103,10 +3103,8 @@ static noinline int btrfs_ioctl_snap_des
 	inode_lock(inode);
 	err = btrfs_delete_subvolume(dir, dentry);
 	inode_unlock(inode);
-	if (!err) {
-		fsnotify_rmdir(dir, dentry);
-		d_delete(dentry);
-	}
+	if (!err)
+		d_delete_notify(dir, dentry);
 
 out_dput:
 	dput(dentry);
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -3709,13 +3709,12 @@ int vfs_rmdir(struct inode *dir, struct
 	dentry->d_inode->i_flags |= S_DEAD;
 	dont_mount(dentry);
 	detach_mounts(dentry);
-	fsnotify_rmdir(dir, dentry);
 
 out:
 	inode_unlock(dentry->d_inode);
 	dput(dentry);
 	if (!error)
-		d_delete(dentry);
+		d_delete_notify(dir, dentry);
 	return error;
 }
 EXPORT_SYMBOL(vfs_rmdir);
@@ -3825,7 +3824,6 @@ int vfs_unlink(struct inode *dir, struct
 			if (!error) {
 				dont_mount(dentry);
 				detach_mounts(dentry);
-				fsnotify_unlink(dir, dentry);
 			}
 		}
 	}
@@ -3833,9 +3831,11 @@ out:
 	inode_unlock(target);
 
 	/* We don't d_delete() NFS sillyrenamed files--they still exist. */
-	if (!error && !(dentry->d_flags & DCACHE_NFSFS_RENAMED)) {
+	if (!error && dentry->d_flags & DCACHE_NFSFS_RENAMED) {
+		fsnotify_unlink(dir, dentry);
+	} else if (!error) {
 		fsnotify_link_count(target);
-		d_delete(dentry);
+		d_delete_notify(dir, dentry);
 	}
 
 	return error;
--- a/include/linux/fsnotify.h
+++ b/include/linux/fsnotify.h
@@ -204,16 +204,52 @@ static inline void fsnotify_link(struct
 }
 
 /*
+ * fsnotify_delete - @dentry was unlinked and unhashed
+ *
+ * Caller must make sure that dentry->d_name is stable.
+ *
+ * Note: unlike fsnotify_unlink(), we have to pass also the unlinked inode
+ * as this may be called after d_delete() and old_dentry may be negative.
+ */
+static inline void fsnotify_delete(struct inode *dir, struct inode *inode,
+				   struct dentry *dentry)
+{
+	__u32 mask = FS_DELETE;
+
+	if (S_ISDIR(inode->i_mode))
+		mask |= FS_ISDIR;
+
+	fsnotify_name(dir, mask, inode, &dentry->d_name, 0);
+}
+
+/**
+ * d_delete_notify - delete a dentry and call fsnotify_delete()
+ * @dentry: The dentry to delete
+ *
+ * This helper is used to guaranty that the unlinked inode cannot be found
+ * by lookup of this name after fsnotify_delete() event has been delivered.
+ */
+static inline void d_delete_notify(struct inode *dir, struct dentry *dentry)
+{
+	struct inode *inode = d_inode(dentry);
+
+	ihold(inode);
+	d_delete(dentry);
+	fsnotify_delete(dir, inode, dentry);
+	iput(inode);
+}
+
+/*
  * fsnotify_unlink - 'name' was unlinked
  *
  * Caller must make sure that dentry->d_name is stable.
  */
 static inline void fsnotify_unlink(struct inode *dir, struct dentry *dentry)
 {
-	/* Expected to be called before d_delete() */
-	WARN_ON_ONCE(d_is_negative(dentry));
+	if (WARN_ON_ONCE(d_is_negative(dentry)))
+		return;
 
-	fsnotify_dirent(dir, dentry, FS_DELETE);
+	fsnotify_delete(dir, d_inode(dentry), dentry);
 }
 
 /*
@@ -233,10 +269,10 @@ static inline void fsnotify_mkdir(struct
  */
 static inline void fsnotify_rmdir(struct inode *dir, struct dentry *dentry)
 {
-	/* Expected to be called before d_delete() */
-	WARN_ON_ONCE(d_is_negative(dentry));
+	if (WARN_ON_ONCE(d_is_negative(dentry)))
+		return;
 
-	fsnotify_dirent(dir, dentry, FS_DELETE | FS_ISDIR);
+	fsnotify_delete(dir, d_inode(dentry), dentry);
 }
 
 /*

[PATCH 5.10 100/100] block: Fix wrong offset in bio_truncate()

[Greg Kroah-Hartman]

From: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>

commit 3ee859e384d453d6ac68bfd5971f630d9fa46ad3 upstream.

bio_truncate() clears the buffer outside of last block of bdev, however
current bio_truncate() is using the wrong offset of page. So it can
return the uninitialized data.

This happened when both of truncated/corrupted FS and userspace (via
bdev) are trying to read the last of bdev.

Reported-by: syzbot+ac94ae5f68b84197f41c@syzkaller.appspotmail.com
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/875yqt1c9g.fsf@mail.parknet.co.jp
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 block/bio.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/block/bio.c
+++ b/block/bio.c
@@ -575,7 +575,8 @@ void bio_truncate(struct bio *bio, unsig
 				offset = new_size - done;
 			else
 				offset = 0;
-			zero_user(bv.bv_page, offset, bv.bv_len - offset);
+			zero_user(bv.bv_page, bv.bv_offset + offset,
+				  bv.bv_len - offset);
 			truncated = true;
 		}
 		done += bv.bv_len;

Re: [PATCH 5.10 000/100] 5.10.96-rc1 review

[Florian Fainelli]

On 1/31/2022 2:55 AM, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.10.96 release.
> There are 100 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 Wed, 02 Feb 2022 10:51:59 +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-5.10.96-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

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

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

Re: [PATCH 5.10 089/100] net: cpsw: Properly initialise struct page_pool_params

[Colin Foster]

On Mon, Jan 31, 2022 at 11:56:50AM +0100, Greg Kroah-Hartman wrote:
> From: Toke Høiland-Jørgensen <toke@redhat.com>
> 
> [ Upstream commit c63003e3d99761afb280add3b30de1cf30fa522b ]
> 
> The cpsw driver didn't properly initialise the struct page_pool_params
> before calling page_pool_create(), which leads to crashes after the struct
> has been expanded with new parameters.
> 
> The second Fixes tag below is where the buggy code was introduced, but
> because the code was moved around this patch will only apply on top of the
> commit in the first Fixes tag.
> 
> Fixes: c5013ac1dd0e ("net: ethernet: ti: cpsw: move set of common functions in cpsw_priv")
> Fixes: 9ed4050c0d75 ("net: ethernet: ti: cpsw: add XDP support")

In 5.4 every parameter is individually initialized, so there really
isn't a "bug" necessarily. Only at commit e68bc75691cc does it actually
start not initializing every parameter.

https://elixir.bootlin.com/linux/v5.4.175/source/drivers/net/ethernet/ti/cpsw.c#L558

I'm not familiar with the process of backporting fixes to stable yet. Is
there any benefit in this cleanup for 5.4 or is it fine to leave it?

> Reported-by: Colin Foster <colin.foster@in-advantage.com>
> Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
> Tested-by: Colin Foster <colin.foster@in-advantage.com>
> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
> Signed-off-by: David S. Miller <davem@davemloft.net>
> Signed-off-by: Sasha Levin <sashal@kernel.org>
> ---
>  drivers/net/ethernet/ti/cpsw_priv.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/ti/cpsw_priv.c b/drivers/net/ethernet/ti/cpsw_priv.c
> index 424e644724e46..e74f2e95a46eb 100644
> --- a/drivers/net/ethernet/ti/cpsw_priv.c
> +++ b/drivers/net/ethernet/ti/cpsw_priv.c
> @@ -1144,7 +1144,7 @@ int cpsw_fill_rx_channels(struct cpsw_priv *priv)
>  static struct page_pool *cpsw_create_page_pool(struct cpsw_common *cpsw,
>  					       int size)
>  {
> -	struct page_pool_params pp_params;
> +	struct page_pool_params pp_params = {};
>  	struct page_pool *pool;
>  
>  	pp_params.order = 0;
> -- 
> 2.34.1
> 
> 
> 

Re: [PATCH 5.10 000/100] 5.10.96-rc1 review

[Shuah Khan]

On 1/31/22 3:55 AM, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.10.96 release.
> There are 100 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 Wed, 02 Feb 2022 10:51:59 +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-5.10.96-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
> 

Compiled and booted on my test system. No dmesg regressions.

Tested-by: Shuah Khan <skhan@linuxfoundation.org>

thanks,
-- Shuah

Re: [PATCH 5.10 000/100] 5.10.96-rc1 review

[Guenter Roeck]

On Mon, Jan 31, 2022 at 11:55:21AM +0100, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.10.96 release.
> There are 100 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 Wed, 02 Feb 2022 10:51:59 +0000.
> Anything received after that time might be too late.
> 

Build results:
	total: 161 pass: 161 fail: 0
Qemu test results:
	total: 477 pass: 477 fail: 0

Tested-by: Guenter Roeck <linux@roeck-us.net>

Guenter

Re: [PATCH 5.10 000/100] 5.10.96-rc1 review

[Naresh Kamboju]

On Mon, 31 Jan 2022 at 16:33, Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
>
> This is the start of the stable review cycle for the 5.10.96 release.
> There are 100 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 Wed, 02 Feb 2022 10:51:59 +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-5.10.96-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>

## Build
* kernel: 5.10.96-rc1
* git: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
* git branch: linux-5.10.y
* git commit: bf18cfd8183fafa8bbba6fdd2c236624bbef333c
* git describe: v5.10.95-101-gbf18cfd8183f
* test details:
https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-5.10.y/build/v5.10.95-101-gbf18cfd8183f

## Test Regressions (compared to v5.10.95-97-g5abe721dc35b)
No test regressions found.

## Metric Regressions (compared to v5.10.95-97-g5abe721dc35b)
No metric regressions found.

## Test Fixes (compared to v5.10.95-97-g5abe721dc35b)
No test fixes found.

## Metric Fixes (compared to v5.10.95-97-g5abe721dc35b)
No metric fixes found.

## Test result summary
total: 95051, pass: 81215, fail: 565, skip: 12502, xfail: 769

## Build Summary
* arc: 10 total, 10 passed, 0 failed
* arm: 259 total, 259 passed, 0 failed
* arm64: 37 total, 37 passed, 0 failed
* dragonboard-410c: 1 total, 1 passed, 0 failed
* hi6220-hikey: 1 total, 1 passed, 0 failed
* i386: 36 total, 36 passed, 0 failed
* juno-r2: 1 total, 1 passed, 0 failed
* mips: 34 total, 34 passed, 0 failed
* parisc: 12 total, 12 passed, 0 failed
* powerpc: 52 total, 46 passed, 6 failed
* riscv: 24 total, 22 passed, 2 failed
* s390: 18 total, 18 passed, 0 failed
* sh: 24 total, 24 passed, 0 failed
* sparc: 12 total, 12 passed, 0 failed
* x15: 1 total, 1 passed, 0 failed
* x86: 1 total, 1 passed, 0 failed
* x86_64: 37 total, 37 passed, 0 failed

## Test suites summary
* fwts
* igt-gpu-tools
* kselftest-android
* kselftest-arm64
* kselftest-arm64/arm64.btitest.bti_c_func
* kselftest-arm64/arm64.btitest.bti_j_func
* kselftest-arm64/arm64.btitest.bti_jc_func
* kselftest-arm64/arm64.btitest.bti_none_func
* kselftest-arm64/arm64.btitest.nohint_func
* kselftest-arm64/arm64.btitest.paciasp_func
* kselftest-arm64/arm64.nobtitest.bti_c_func
* kselftest-arm64/arm64.nobtitest.bti_j_func
* kselftest-arm64/arm64.nobtitest.bti_jc_func
* kselftest-arm64/arm64.nobtitest.bti_none_func
* kselftest-arm64/arm64.nobtitest.nohint_func
* kselftest-arm64/arm64.nobtitest.paciasp_func
* kselftest-bpf
* kselftest-breakpoints
* kselftest-capabilities
* kselftest-cgroup
* kselftest-clone3
* kselftest-core
* kselftest-cpu-hotplug
* kselftest-cpufreq
* kselftest-drivers
* kselftest-efivarfs
* kselftest-filesystems
* kselftest-firmware
* kselftest-fpu
* kselftest-futex
* kselftest-gpio
* kselftest-intel_pstate
* kselftest-ipc
* kselftest-ir
* kselftest-kcmp
* kselftest-kexec
* kselftest-kvm
* kselftest-lib
* kselftest-livepatch
* kselftest-membarrier
* kselftest-memfd
* kselftest-memory-hotplug
* kselftest-mincore
* kselftest-mount
* kselftest-mqueue
* kselftest-net
* kselftest-netfilter
* kselftest-nsfs
* kselftest-openat2
* kselftest-pid_namespace
* kselftest-pidfd
* kselftest-proc
* kselftest-pstore
* kselftest-ptrace
* kselftest-rseq
* kselftest-rtc
* kselftest-seccomp
* kselftest-sigaltstack
* kselftest-size
* kselftest-splice
* kselftest-static_keys
* kselftest-sync
* kselftest-sysctl
* kselftest-tc-testing
* kselftest-timens
* kselftest-timers
* kselftest-tmpfs
* kselftest-tpm2
* kselftest-user
* kselftest-vm
* kselftest-x86
* kselftest-zram
* kunit
* kvm-unit-tests
* libgpiod
* libhugetlbfs
* linux-log-parser
* ltp-cap_bounds-tests
* ltp-commands-tests
* ltp-containers-tests
* ltp-controllers-tests
* ltp-cpuhotplug-tests
* ltp-crypto-tests
* ltp-cve-tests
* ltp-dio-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-io-tests
* ltp-ipc-tests
* ltp-math-tests
* ltp-mm-tests
* ltp-nptl-tests
* ltp-open-posix-tests
* ltp-pty-tests
* ltp-sched-tests
* ltp-securebits-tests
* ltp-syscalls-tests
* ltp-tracing-tests
* network-basic-tests
* packetdrill
* perf
* rcutorture
* ssuite
* v4l2-compliance

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

Re: [PATCH 5.10 089/100] net: cpsw: Properly initialise struct page_pool_params

[Greg Kroah-Hartman]

On Mon, Jan 31, 2022 at 12:19:09PM -0800, Colin Foster wrote:
> On Mon, Jan 31, 2022 at 11:56:50AM +0100, Greg Kroah-Hartman wrote:
> > From: Toke Høiland-Jørgensen <toke@redhat.com>
> > 
> > [ Upstream commit c63003e3d99761afb280add3b30de1cf30fa522b ]
> > 
> > The cpsw driver didn't properly initialise the struct page_pool_params
> > before calling page_pool_create(), which leads to crashes after the struct
> > has been expanded with new parameters.
> > 
> > The second Fixes tag below is where the buggy code was introduced, but
> > because the code was moved around this patch will only apply on top of the
> > commit in the first Fixes tag.
> > 
> > Fixes: c5013ac1dd0e ("net: ethernet: ti: cpsw: move set of common functions in cpsw_priv")
> > Fixes: 9ed4050c0d75 ("net: ethernet: ti: cpsw: add XDP support")
> 
> In 5.4 every parameter is individually initialized, so there really
> isn't a "bug" necessarily. Only at commit e68bc75691cc does it actually
> start not initializing every parameter.
> 
> https://elixir.bootlin.com/linux/v5.4.175/source/drivers/net/ethernet/ti/cpsw.c#L558
> 
> I'm not familiar with the process of backporting fixes to stable yet. Is
> there any benefit in this cleanup for 5.4 or is it fine to leave it?

Let's be safe and leave it.

thanks,

greg k-h

Re: [PATCH 5.10 000/100] 5.10.96-rc1 review

[Pavel Machek]

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Hi!

> This is the start of the stable review cycle for the 5.10.96 release.
> There are 100 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 Wed, 02 Feb 2022 10:51:59 +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-5.10.96-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.

It seems we have boot problem on x86 qemu:

https://lava.ciplatform.org/scheduler/job/616782


[    0.183194] APIC: Switch to symmetric I/O mode setup
[    0.187399] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
[    0.200659] ..MP-BIOS bug: 8254 timer not connected to IO-APIC
[    0.200984] ...trying to set up timer (IRQ0) through the 8259A ...
[    0.201309] ..... (found apic 0 pin 2) ...
[    0.214131] ....... failed.
[    0.214303] ...trying to set up timer as Virtual Wire IRQ...
[    0.227212] ..... failed.
[    0.227390] ...trying to set up timer as ExtINT IRQ...
[    1.287247] ..... failed :(.
[    1.287584] Kernel panic - not syncing: IO-APIC + timer doesn't work!  Boot with apic=debug and send a report.  Then try booting with the 'noapic' option.
[    1.288043] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.10.96-rc1+ #1
[    1.288231] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[    1.288582] Call Trace:

Other than that we have only the usual gmp.h failures.

https://gitlab.com/cip-project/cip-testing/linux-stable-rc-ci/-/pipelines/459895032

I'll re-trigger the x86 qemu test, but it looks like real problem to me.

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 5.10 000/100] 5.10.96-rc1 review

[Pavel Machek]

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Hi!

> > This is the start of the stable review cycle for the 5.10.96 release.
> > There are 100 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 Wed, 02 Feb 2022 10:51:59 +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-5.10.96-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.
> 
> It seems we have boot problem on x86 qemu:
> 
> https://lava.ciplatform.org/scheduler/job/616782
> 
> 
> [    0.183194] APIC: Switch to symmetric I/O mode setup
> [    0.187399] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
> [    0.200659] ..MP-BIOS bug: 8254 timer not connected to IO-APIC
> [    0.200984] ...trying to set up timer (IRQ0) through the 8259A ...
> [    0.201309] ..... (found apic 0 pin 2) ...
> [    0.214131] ....... failed.
> [    0.214303] ...trying to set up timer as Virtual Wire IRQ...
> [    0.227212] ..... failed.
> [    0.227390] ...trying to set up timer as ExtINT IRQ...
> [    1.287247] ..... failed :(.
> [    1.287584] Kernel panic - not syncing: IO-APIC + timer doesn't work!  Boot with apic=debug and send a report.  Then try booting with the 'noapic' option.
> [    1.288043] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.10.96-rc1+ #1
> [    1.288231] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
> [    1.288582] Call Trace:
> 
> Other than that we have only the usual gmp.h failures.
> 
> https://gitlab.com/cip-project/cip-testing/linux-stable-rc-ci/-/pipelines/459895032
> 
> I'll re-trigger the x86 qemu test, but it looks like real problem to me.

Huh. It suceeded this time.

https://gitlab.com/cip-project/cip-testing/linux-stable-rc-ci/-/jobs/2039003632

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 5.10 000/100] 5.10.96-rc1 review

[Sudip Mukherjee]

Hi Greg,

On Mon, Jan 31, 2022 at 11:55:21AM +0100, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.10.96 release.
> There are 100 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 Wed, 02 Feb 2022 10:51:59 +0000.
> Anything received after that time might be too late.

Build test:
mips (gcc version 11.2.1 20220121): 63 configs -> no new failure
arm (gcc version 11.2.1 20220121): 105 configs -> no new failure
arm64 (gcc version 11.2.1 20220121): 3 configs -> no failure
x86_64 (gcc version 11.2.1 20220121): 4 configs -> no failure

Boot test:
x86_64: Booted on my test laptop. No regression.
x86_64: Booted on qemu. No regression. [1]
arm64: Booted on rpi4b (4GB model). No regression. [2]

[1]. https://openqa.qa.codethink.co.uk/tests/687
[2]. https://openqa.qa.codethink.co.uk/tests/691


Tested-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>

--
Regards
Sudip

RE: [PATCH 5.10 000/100] 5.10.96-rc1 review

[Fox Chen]

On Mon, 31 Jan 2022 11:55:21 +0100, Greg Kroah-Hartman <gregkh@linuxfoundation.org> wrote:
> This is the start of the stable review cycle for the 5.10.96 release.
> There are 100 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 Wed, 02 Feb 2022 10:51:59 +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-5.10.96-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
> 

5.10.96-rc1 Successfully Compiled and booted on my Raspberry PI 4b (8g) (bcm2711)
                
Tested-by: Fox Chen <foxhlchen@gmail.com>

Re: [PATCH 5.10 011/100] efi: runtime: avoid EFIv2 runtime services on Apple x86 machines

[Pavel Machek]

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Hi!

> Aditya reports [0] that his recent MacbookPro crashes in the firmware
> when using the variable services at runtime. The culprit appears to be a
> call to QueryVariableInfo(), which we did not use to call on Apple x86
> machines in the past as they only upgraded from EFI v1.10 to EFI v2.40
> firmware fairly recently, and QueryVariableInfo() (along with
> UpdateCapsule() et al) was added in EFI v2.00.
> 
> The only runtime service introduced in EFI v2.00 that we actually use in
> Linux is QueryVariableInfo(), as the capsule based ones are optional,
> generally not used at runtime (all the LVFS/fwupd firmware update
> infrastructure uses helper EFI programs that invoke capsule update at
> boot time, not runtime), and not implemented by Apple machines in the
> first place. QueryVariableInfo() is used to 'safely' set variables,
> i.e., only when there is enough space. This prevents machines with buggy
> firmwares from corrupting their NVRAMs when they run out of space.
> 
> Given that Apple machines have been using EFI v1.10 services only for
> the longest time (the EFI v2.0 spec was released in 2006, and Linux
> support for the newly introduced runtime services was added in 2011, but
> the MacbookPro12,1 released in 2015 still claims to be EFI v1.10 only),
> let's avoid the EFI v2.0 ones on all Apple x86 machines.

So Apple x86 machines claim they support EFI v2 but really don't?

> +++ b/drivers/firmware/efi/efi.c
> @@ -719,6 +719,13 @@ void __init efi_systab_report_header(con
>  		systab_hdr->revision >> 16,
>  		systab_hdr->revision & 0xffff,
>  		vendor);
> +
> +	if (IS_ENABLED(CONFIG_X86_64) &&
> +	    systab_hdr->revision > EFI_1_10_SYSTEM_TABLE_REVISION &&
> +	    !strcmp(vendor, "Apple")) {
> +		pr_info("Apple Mac detected, using EFI v1.10 runtime services only\n");
> +		efi.runtime_version = EFI_1_10_SYSTEM_TABLE_REVISION;
> +	}
>  }

This problem is not 64-bit specific, right? Should it depend on
CONFIG_X86, instead?

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 5.10 011/100] efi: runtime: avoid EFIv2 runtime services on Apple x86 machines

[Matthew Garrett]

On Thu, Feb 03, 2022 at 09:52:23PM +0100, Pavel Machek wrote:

> This problem is not 64-bit specific, right? Should it depend on
> CONFIG_X86, instead?

Only 64-bit systems are affected (the one 32-bit generation of Apple 
hardware implementing EFI only claims 1.10 support), and 32-bit kernels 
can't make 64-bit UEFI runtime calls, so I think it's correct to make it 
64-bit only.