NULL pointer dereference at _mod_memcg_state+0x14/0xb0

Bug #1952193 reported by Sergey Borodavkin
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux-meta-hwe-5.4 (Ubuntu)

Bug Description


We meet a randomly host kernel panics with same RIP and "BUG: kernel NULL pointer dereference".
At current time affected kernel versions was from 5.4.0-53 to 5.4.0-84.
For now i have a dmesg log and crash file, but no clue where what to do next.


  Distributor ID: Ubuntu
  Description: Ubuntu 18.04.6 LTS
  Release: 18.04
  Codename: bionic

Crash report

      KERNEL: usr/lib/debug/boot/vmlinux-5.4.0-84-generic
    DUMPFILE: dump.202111240900 [PARTIAL DUMP]
        CPUS: 24
        DATE: Wed Nov 24 09:00:22 2021
      UPTIME: 15 days, 23:17:07
LOAD AVERAGE: 46.41, 37.67, 30.39
       TASKS: 3071
    NODENAME: cmp20
     RELEASE: 5.4.0-84-generic
     VERSION: #94~18.04.1-Ubuntu SMP Thu Aug 26 23:17:46 UTC 2021
     MACHINE: x86_64 (2299 Mhz)
      MEMORY: 255.9 GB
       PANIC: "Oops: 0000 [#1] SMP PTI" (check log for details)
         PID: 2239917
        TASK: ffff9bbd96620000 [THREAD_INFO: ffff9bbd96620000]
         CPU: 14

Revision history for this message
Sergey Borodavkin (bocmanpy) wrote :
Revision history for this message
Sergey Borodavkin (bocmanpy) wrote :
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