lkml.org 
[lkml]   [2019]   [Nov]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    Date
    SubjectRe: [PATCH 4.14 000/211] 4.14.157-stable review
    Hi Greg,

    > Kernel BUG noticed on x86_64 device while booting 4.14.157-rc1 kernel.


    The problematic patch is,
    >> Jouni Hogander <jouni.hogander@unikie.com>
    >> net-sysfs: Fix reference count leak in rx|netdev_queue_add_kobject

    And this kernel panic is been fixed by below patch,

    commit 48a322b6f9965b2f1e4ce81af972f0e287b07ed0
    Author: Eric Dumazet <edumazet@google.com>
    Date: Wed Nov 20 19:19:07 2019 -0800

    net-sysfs: fix netdev_queue_add_kobject() breakage

    kobject_put() should only be called in error path.

    Fixes: b8eb718348b8 ("net-sysfs: Fix reference count leak in
    rx|netdev_queue_add_kobject")
    Signed-off-by: Eric Dumazet <edumazet@google.com>
    Cc: Jouni Hogander <jouni.hogander@unikie.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>



    > Regressions (compared to build v4.14.156)
    >
    > [ 2.777657] BUG: unable to handle kernel NULL pointer dereference
    > at 0000000000000090
    > [ 2.785487] IP: kernfs_find_ns+0x18/0xf0
    > [ 2.789408] PGD 0 P4D 0
    > [ 2.791941] Oops: 0000 [#1] SMP PTI
    > [ 2.795424] Modules linked in:
    > [ 2.798474] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.14.157-rc1 #1
    > [ 2.804906] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
    > 2.2 05/23/2018
    > [ 2.812288] task: ffff8e09ee250000 task.stack: ffffa0f900028000
    > [ 2.818200] RIP: 0010:kernfs_find_ns+0x18/0xf0

    <trim>

    > [ 3.108995] Kernel panic - not syncing: Attempted to kill init!
    > exitcode=0x00000009
    > [ 3.108995]
    > [ 3.118161] Kernel Offset: 0x1c400000 from 0xffffffff81000000
    > (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
    >
    > Full test log,
    > https://lkft.validation.linaro.org/scheduler/job/1026224#L793
    >

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

    \
     
     \ /
      Last update: 2019-11-28 07:22    [W:4.269 / U:0.048 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site