From: kernel test robot <oliver.sang@intel.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: <oe-lkp@lists.linux.dev>, <lkp@intel.com>,
<linux-kernel@vger.kernel.org>,
Daniel Bristot de Oliveira <bristot@kernel.org>,
"Vineeth Pillai (Google)" <vineeth@bitbyteword.org>,
Juri Lelli <juri.lelli@redhat.com>, <aubrey.li@linux.intel.com>,
<yu.c.chen@intel.com>, <oliver.sang@intel.com>
Subject: [linus:master] [sched/rt] 5f6bd380c7: kernel-selftests.kvm.rseq_test.fail
Date: Mon, 21 Oct 2024 13:44:24 +0800 [thread overview]
Message-ID: <202410211347.6d1c29b9-oliver.sang@intel.com> (raw)
Hello,
kernel test robot noticed "kernel-selftests.kvm.rseq_test.fail" on:
commit: 5f6bd380c7bdbe10f7b4e8ddcceed60ce0714c6d ("sched/rt: Remove default bandwidth control")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
[test failed on linus/master 684a64bf32b6e488004e0ad7f0d7e922798f65b6]
[test failed on linux-next/master 2b7275670032a98cba266bd1b8905f755b3e650f]
in testcase: kernel-selftests
version: kernel-selftests-x86_64-977d51cf-1_20240508
with following parameters:
group: kvm
config: x86_64-rhel-8.3-kselftests
compiler: gcc-12
test machine: 224 threads 2 sockets Intel(R) Xeon(R) Platinum 8480+ (Sapphire Rapids) with 256G memory
(please refer to attached dmesg/kmsg for entire log/backtrace)
we noticed the issue happens randomly, 57 times out of 200 runs as below.
but parent keeps clean.
c8a85394cfdb4696 5f6bd380c7bdbe10f7b4e8ddcce
---------------- ---------------------------
fail:runs %reproduction fail:runs
| | |
:200 28% 57:200 kernel-selftests.kvm.rseq_test.fail
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@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202410211347.6d1c29b9-oliver.sang@intel.com
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20241021/202410211347.6d1c29b9-oliver.sang@intel.com
# timeout set to 120
# selftests: kvm: rseq_test
# Random seed: 0x6b8b4567
# ==== Test Assertion Failure ====
# rseq_test.c:293: skip_sanity_check || i > (NR_TASK_MIGRATIONS / 2)
# pid=46138 tid=46138 errno=4 - Interrupted system call
# 1 0x000000000040299a: main at rseq_test.c:293
# 2 0x00007fc679e6e249: ?? ??:0
# 3 0x00007fc679e6e304: ?? ??:0
# 4 0x0000000000402a80: _start at ??:?
# Only performed 47875 KVM_RUNs, task stalled too much?
#
# Try disabling deep sleep states to reduce CPU wakeup latency,
# e.g. via cpuidle.off=1 or setting /dev/cpu_dma_latency to '0',
# or run with -u to disable this sanity check.
not ok 78 selftests: kvm: rseq_test # exit=254
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2024-10-21 5:44 UTC|newest]
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