linux-kernel - [linus:master] [mm] aab6103b97: kernel-selftests.cgroup.test_kmem.test_percpu

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Message-ID: <202405211653.efc447b0-oliver.sang@intel.com>
Date: Tue, 21 May 2024 16:50:03 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Roman Gushchin <roman.gushchin@...ux.dev>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>, <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>, Shakeel Butt
	<shakeel.butt@...ux.dev>, Yosry Ahmed <yosryahmed@...gle.com>, "T.J. Mercier"
	<tjmercier@...gle.com>, Johannes Weiner <hannes@...xchg.org>, Michal Hocko
	<mhocko@...nel.org>, Muchun Song <muchun.song@...ux.dev>,
	<cgroups@...r.kernel.org>, <linux-mm@...ck.org>, <oliver.sang@...el.com>
Subject: [linus:master] [mm]  aab6103b97:
 kernel-selftests.cgroup.test_kmem.test_percpu_basic.fail



Hello,

kernel test robot noticed "kernel-selftests.cgroup.test_kmem.test_percpu_basic.fail" on:

commit: aab6103b97f1c7ca6cf33e78d5e6916e53fc265c ("mm: memcg: account memory used for memcg vmstats and lruvec stats")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

in testcase: kernel-selftests
version: kernel-selftests-x86_64-977d51cf-1_20240508
with following parameters:

	group: cgroup



compiler: gcc-13
test machine: 4 threads 1 sockets Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz (Ivy Bridge) with 8G memory

(please refer to attached dmesg/kmsg for entire log/backtrace)




If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@...el.com>
| Closes: https://lore.kernel.org/oe-lkp/202405211653.efc447b0-oliver.sang@intel.com



# timeout set to 300
# selftests: cgroup: test_kmem
# not ok 1 test_kmem_basic
# ok 2 test_kmem_memcg_deletion
# ok 3 test_kmem_proc_kpagecgroup
# ok 4 test_kmem_kernel_stacks
# ok 5 test_kmem_dead_cgroups
# memory.current 20549632
# percpu 12096000
# not ok 6 test_percpu_basic     <------
not ok 2 selftests: cgroup: test_kmem # exit=1


the case always pass on parent

70a64b7919cbd6c1 aab6103b97f1c7ca6cf33e78d5e
---------------- ---------------------------
       fail:runs  %reproduction    fail:runs
           |             |             |
           :6          100%           6:6     kernel-selftests.cgroup.test_kmem.test_percpu_basic.fail


below is the log from one parent run:

# timeout set to 300
# selftests: cgroup: test_kmem
# not ok 1 test_kmem_basic
# ok 2 test_kmem_memcg_deletion
# ok 3 test_kmem_proc_kpagecgroup
# ok 4 test_kmem_kernel_stacks
# ok 5 test_kmem_dead_cgroups
# ok 6 test_percpu_basic     <-------
not ok 2 selftests: cgroup: test_kmem # exit=1


The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20240521/202405211653.efc447b0-oliver.sang@intel.com



-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki