Public bug reported:
[Impact]
memcg_subgroup_charge from ubuntu_ltp is failing on ppc64el (only with
Power9) with focal/linux 5.4.0-81.91.
memcg_subgroup_charge 1 TINFO: timeout per run is 0h 5m 0s
memcg_subgroup_charge 1 TINFO: set /dev/memcg/memory.use_hierarchy to 0 failed
memcg_subgroup_charge 1 TINFO: Test that group and subgroup have no relationship
memcg_subgroup_charge 1 TINFO: Running memcg_process --mmap-anon -s 4325376
memcg_subgroup_charge 1 TINFO: Warming up pid: 530613
memcg_subgroup_charge 1 TINFO: Process is still here after warm up: 530613
memcg_subgroup_charge 1 TFAIL: rss is 2949120, 4325376 expected
memcg_subgroup_charge 1 TPASS: rss is 0 as expected
memcg_subgroup_charge 2 TINFO: Running memcg_process --mmap-anon -s 4325376
memcg_subgroup_charge 2 TINFO: Warming up pid: 530633
memcg_subgroup_charge 2 TINFO: Process is still here after warm up: 530633
memcg_subgroup_charge 2 TFAIL: rss is 3997696, 4325376 expected
memcg_subgroup_charge 2 TPASS: rss is 0 as expected
memcg_subgroup_charge 3 TINFO: Running memcg_process --mmap-anon -s 4325376
memcg_subgroup_charge 3 TINFO: Warming up pid: 530653
memcg_subgroup_charge 3 TINFO: Process is still here after warm up: 530653
memcg_subgroup_charge 3 TFAIL: rss is 2883584, 4325376 expected
memcg_subgroup_charge 3 TPASS: rss is 0 as expected
memcg_subgroup_charge 4 TINFO: AppArmor enabled, this may affect test results
memcg_subgroup_charge 4 TINFO: it can be disabled with TST_DISABLE_APPARMOR=1
(requires super/root)
memcg_subgroup_charge 4 TINFO: loaded AppArmor profiles: none
Summary:
passed 3
failed 3
broken 0
skipped 0
warnings 0
There has been some major changed on the testcase, so it's not clear if
this is a test case issue or a kernel regression.
** Affects: ubuntu-kernel-tests
Importance: Undecided
Assignee: Krzysztof Kozlowski (krzk)
Status: New
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: Krzysztof Kozlowski (krzk)
Status: New
** Affects: linux (Ubuntu Focal)
Importance: Undecided
Assignee: Krzysztof Kozlowski (krzk)
Status: Confirmed
** Tags: 5.11 5.4 focal ppc64el ubuntu-ltp
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Focal)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Focal)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1937220
Title:
ubuntu_ltp.memcg_subgroup_charge fails on focal/linux on ppc64el
Power9
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