memcg_failcnt in mm from ubuntu_ltp failed on B 4.15

Bug #1845919 reported by Po-Hsu Lin on 2019-09-30
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
ubuntu-kernel-tests
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linux (Ubuntu)
Undecided
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linux-kvm (Ubuntu)
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Bug Description

Issue found on node amaura, with Bionic 4.15 AMD64:
 tag=memcg_test_3 stime=1569410880 dur=0 exit=exited stat=0 core=no cu=9 cs=17
 startup='Wed Sep 25 11:28:01 2019'
 memcg_failcnt 1 TINFO: Starting test 1
 sh: echo: I/O error
 memcg_failcnt 1 TINFO: set /dev/memcg/memory.use_hierarchy to 0 failed
 memcg_failcnt 1 TINFO: Running memcg_process --mmap-anon -s 8192
 memcg_failcnt 1 TBROK: timeouted on memory.usage_in_bytes
 tag=memcg_failcnt stime=1569410881 dur=10 exit=exited stat=2 core=no cu=9 cs=2

Probably a test case issue, it needs to be investigated

Po-Hsu Lin (cypressyew) on 2019-09-30
tags: added: 4.15 amd64 bionic sru-20190902 ubuntu-ltp

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1845919

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

Changed in linux (Ubuntu):
status: New → Incomplete
Po-Hsu Lin (cypressyew) wrote :

Failed on Disco KVM with

startup='Fri Nov 15 03:59:24 2019'
 memcg_failcnt 1 TINFO: Starting test 1
 /opt/ltp/testcases/bin/memcg_failcnt.sh: 522: echo: echo: I/O error
 memcg_failcnt 1 TINFO: set /dev/memcg/memory.use_hierarchy to 0 failed
 memcg_failcnt 1 TINFO: Running memcg_process --mmap-anon -s 8192
 memcg_failcnt 1 TPASS: memory.failcnt is 10, > 0 as expected
 memcg_failcnt 2 TINFO: Starting test 2
 /opt/ltp/testcases/bin/memcg_failcnt.sh: 522: echo: echo: I/O error
 memcg_failcnt 2 TINFO: set /dev/memcg/memory.use_hierarchy to 0 failed
 memcg_failcnt 2 TINFO: Running memcg_process --mmap-file -s 8192
 memcg_failcnt 2 TBROK: timeouted on memory.usage_in_bytes
 tag=memcg_failcnt stime=1573790364 dur=11 exit=exited stat=2 core=no cu=28 cs=19

tags: added: sru-20191111
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