Issue found with 5.15.0-1025.30 and can be reproduced with 5.15.0-1024-gkeop on google instance g1-small only.
The test and the system will hang with 4th test case inside this test.
Test output: COMMAND: /opt/ltp/bin/ltp-pan -e -S -a 1345 -n 1345 -p -f /tmp/ltp-8BAdmWLWz8/alltests -l /opt/ltp/results/LTP_RUN_ON-2023_08_08-05h_35m_08s.log -C /opt/ltp/output/LTP_RUN_ON-2023_08_08-05h_35m_08s.failed -T /opt/ltp/output/LTP_RUN_ON-2023_08_08-05h_35m_08s.tconf LOG File: /opt/ltp/results/LTP_RUN_ON-2023_08_08-05h_35m_08s.log FAILED COMMAND File: /opt/ltp/output/LTP_RUN_ON-2023_08_08-05h_35m_08s.failed TCONF COMMAND File: /opt/ltp/output/LTP_RUN_ON-2023_08_08-05h_35m_08s.tconf Running tests....... <<<test_start>>> tag=memcg_regression stime=1691472909 cmdline="memcg_regression_test.sh" contacts="" analysis=exit <<<test_output>>> incrementing stop memcg_regression_test 1 TINFO: timeout per run is 0h 5m 0s memcg_regression_test 1 TINFO: test starts with cgroup version 2 memcg_regression_test 1 TPASS: no kernel bug was found memcg_regression_test 2 TCONF: Cgroup v2 found, skipping test memcg_regression_test 3 TPASS: no kernel bug was found
dmesg output: [ 296.923589] watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [memcg_test_4.sh:1983] [ 324.923599] watchdog: BUG: soft lockup - CPU#0 stuck for 52s! [memcg_test_4.sh:1983] [ 352.923640] watchdog: BUG: soft lockup - CPU#0 stuck for 78s! [memcg_test_4.sh:1983] [ 380.923622] watchdog: BUG: soft lockup - CPU#0 stuck for 104s! [memcg_test_4.sh:1983] [ 408.923634] watchdog: BUG: soft lockup - CPU#0 stuck for 130s! [memcg_test_4.sh:1983] [ 436.923645] watchdog: BUG: soft lockup - CPU#0 stuck for 156s! [memcg_test_4.sh:1983]
Issue found with 5.15.0-1025.30 and can be reproduced with 5.15.0-1024-gkeop on google instance g1-small only.
The test and the system will hang with 4th test case inside this test.
Test output: bin/ltp- pan -e -S -a 1345 -n 1345 -p -f /tmp/ltp- 8BAdmWLWz8/ alltests -l /opt/ltp/ results/ LTP_RUN_ ON-2023_ 08_08-05h_ 35m_08s. log -C /opt/ltp/ output/ LTP_RUN_ ON-2023_ 08_08-05h_ 35m_08s. failed -T /opt/ltp/ output/ LTP_RUN_ ON-2023_ 08_08-05h_ 35m_08s. tconf results/ LTP_RUN_ ON-2023_ 08_08-05h_ 35m_08s. log output/ LTP_RUN_ ON-2023_ 08_08-05h_ 35m_08s. failed output/ LTP_RUN_ ON-2023_ 08_08-05h_ 35m_08s. tconf regression stime=1691472909 "memcg_ regression_ test.sh" n_test 1 TINFO: timeout per run is 0h 5m 0s n_test 1 TINFO: test starts with cgroup version 2 n_test 1 TPASS: no kernel bug was found n_test 2 TCONF: Cgroup v2 found, skipping test n_test 3 TPASS: no kernel bug was found
COMMAND: /opt/ltp/
LOG File: /opt/ltp/
FAILED COMMAND File: /opt/ltp/
TCONF COMMAND File: /opt/ltp/
Running tests.......
<<<test_start>>>
tag=memcg_
cmdline=
contacts=""
analysis=exit
<<<test_output>>>
incrementing stop
memcg_regressio
memcg_regressio
memcg_regressio
memcg_regressio
memcg_regressio
dmesg output: test_4. sh:1983] test_4. sh:1983] test_4. sh:1983] test_4. sh:1983] test_4. sh:1983] test_4. sh:1983]
[ 296.923589] watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [memcg_
[ 324.923599] watchdog: BUG: soft lockup - CPU#0 stuck for 52s! [memcg_
[ 352.923640] watchdog: BUG: soft lockup - CPU#0 stuck for 78s! [memcg_
[ 380.923622] watchdog: BUG: soft lockup - CPU#0 stuck for 104s! [memcg_
[ 408.923634] watchdog: BUG: soft lockup - CPU#0 stuck for 130s! [memcg_
[ 436.923645] watchdog: BUG: soft lockup - CPU#0 stuck for 156s! [memcg_