Controllers test in ubuntu_ltp fails to mount on /dev/cpuctl

Bug #1943627 reported by Luke Nowakowski-Krijger
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
ubuntu-kernel-tests
New
Undecided
Po-Hsu Lin
linux-gcp (Ubuntu)
New
Undecided
Unassigned

Bug Description

Found on Focal linux-gcp 5.11.0-1019.21 on g1-small instance.

The tests are not able to mount on /dev/cpuctl which is causing cpu controller testing, latency tests, and cpuctl_test_fj to fail, seems to be only on g1-small instances.

This error has been observed in previous cycles and is not a new regression.

20:09:23 DEBUG| [stdout] startup='Mon Sep 13 20:07:02 2021'
20:09:23 DEBUG| [stdout] TEST 1: CPU CONTROLLER TESTING
20:09:23 DEBUG| [stdout] RUNNING SETUP.....
20:09:23 DEBUG| [stdout] ERROR: Could not mount cgroup filesystem on /dev/cpuctl..Exiting test
20:09:23 DEBUG| [stdout] Cleanup called
20:09:23 DEBUG| [stdout] cat: /dev/cpuctl/group_def/tasks: No such file or directory
20:09:23 DEBUG| [stdout] TEST 3: CPU CONTROLLER TESTING
20:09:23 DEBUG| [stdout] RUNNING SETUP.....
20:09:23 DEBUG| [stdout] ERROR: Could not mount cgroup filesystem on /dev/cpuctl..Exiting test
20:09:23 DEBUG| [stdout] Cleanup called
20:09:23 DEBUG| [stdout] cat: /dev/cpuctl/group_def/tasks: No such file or directory
20:09:23 DEBUG| [stdout] TEST 4: CPU CONTROLLER TESTING
20:09:23 DEBUG| [stdout] RUNNING SETUP.....
20:09:23 DEBUG| [stdout] ERROR: Could not mount cgroup filesystem on /dev/cpuctl..Exiting test
20:09:23 DEBUG| [stdout] Cleanup called
20:09:23 DEBUG| [stdout] cat: /dev/cpuctl/group_def/tasks: No such file or directory
20:09:23 DEBUG| [stdout] TEST 5: CPU CONTROLLER TESTING
20:09:23 DEBUG| [stdout] RUNNING SETUP.....
20:09:23 DEBUG| [stdout] ERROR: Could not mount cgroup filesystem on /dev/cpuctl..Exiting test
20:09:23 DEBUG| [stdout] Cleanup called
20:09:23 DEBUG| [stdout] cat: /dev/cpuctl/group_def/tasks: No such file or directory
20:09:23 DEBUG| [stdout] /opt/ltp/testcases/bin/run_cpuctl_stress_test.sh: line 97: /opt/ltp/output/cpuctl_results_stress-678.txt: No such file or directory
20:09:23 DEBUG| [stdout] TEST 6: CPU CONTROLLER STRESS TESTING
20:09:23 DEBUG| [stdout] RUNNING SETUP.....
20:09:23 DEBUG| [stdout] ERROR: Could not mount cgroup filesystem on /dev/cpuctl..Exiting test
20:09:23 DEBUG| [stdout] Cleanup called
20:09:23 DEBUG| [stdout] cat: /dev/cpuctl/group_def/tasks: No such file or directory
20:09:23 DEBUG| [stdout] TEST 7: CPU CONTROLLER STRESS TESTING
20:09:23 DEBUG| [stdout] RUNNING SETUP.....
20:09:23 DEBUG| [stdout] ERROR: Could not mount cgroup filesystem on /dev/cpuctl..Exiting test
20:09:23 DEBUG| [stdout] Cleanup called
20:09:23 DEBUG| [stdout] cat: /dev/cpuctl/group_def/tasks: No such file or directory
20:09:23 DEBUG| [stdout] TEST 8: CPU CONTROLLER STRESS TESTING
20:09:23 DEBUG| [stdout] RUNNING SETUP.....
20:09:23 DEBUG| [stdout] ERROR: Could not mount cgroup filesystem on /dev/cpuctl..Exiting test
20:09:23 DEBUG| [stdout] Cleanup called
20:09:23 DEBUG| [stdout] cat: /dev/cpuctl/group_def/tasks: No such file or directory
20:09:23 DEBUG| [stdout] /opt/ltp/testcases/bin/run_cpuctl_stress_test.sh: line 120: /opt/ltp/output/cpuctl_results_stress-9.txt: No such file or directory
20:09:23 DEBUG| [stdout] TEST 9: CPU CONTROLLER STRESS TESTING
20:09:23 DEBUG| [stdout] RUNNING SETUP.....
20:09:23 DEBUG| [stdout] ERROR: Could not mount cgroup filesystem on /dev/cpuctl..Exiting test
20:09:23 DEBUG| [stdout] Cleanup called
20:09:23 DEBUG| [stdout] cat: /dev/cpuctl/group_def/tasks: No such file or directory
20:09:23 DEBUG| [stdout] /opt/ltp/testcases/bin/run_cpuctl_stress_test.sh: line 127: /opt/ltp/output/cpuctl_results_stress-10.txt: No such file or directory
20:09:23 DEBUG| [stdout] TEST 10: CPU CONTROLLER STRESS TESTING
20:09:23 DEBUG| [stdout] RUNNING SETUP.....
20:09:23 DEBUG| [stdout] ERROR: Could not mount cgroup filesystem on /dev/cpuctl..Exiting test
20:09:23 DEBUG| [stdout] Cleanup called
20:09:23 DEBUG| [stdout] cat: /dev/cpuctl/group_def/tasks: No such file or directory
20:09:23 DEBUG| [stdout] TINFO Running cpuctl Latency Test 1
20:09:23 DEBUG| [stdout] TINFO The latency check task started
20:09:23 DEBUG| [stdout] FAIL The Latency test 1 failed
20:09:23 DEBUG| [stdout] Max latency observed = 123838 in Iteration 0
20:09:23 DEBUG| [stdout] The results FAIL is just intuitive and not exact failure. Please look at cpuctl_testplan.txt in the test directory.
20:09:23 DEBUG| [stdout] Task 763103 exited abnormally with return value: 1
20:09:23 DEBUG| [stdout] TBROK Test could'nt execute for expected duration
20:09:23 DEBUG| [stdout] Doing cleanup
20:09:23 DEBUG| [stdout] Cleanup done for latency test 1
20:09:23 DEBUG| [stdout]
20:09:23 DEBUG| [stdout] TINFO Running cpuctl Latency Test 2
20:09:23 DEBUG| [stdout] ERROR: Could not mount cgroup filesystem on /dev/cpuctl..Exiting test
20:09:23 DEBUG| [stdout] Cleanup called
20:09:23 DEBUG| [stdout] cat: /dev/cpuctl/group_def/tasks: No such file or directory
20:09:23 DEBUG| [stdout] Doing cleanup
20:09:23 DEBUG| [stdout] cat: '/dev/cpuctl/group*/tasks': No such file or directory
20:09:23 DEBUG| [stdout] rmdir: failed to remove '/dev/cpuctl/group*': No such file or directory
20:09:23 DEBUG| [stdout] umount: /dev/cpuctl: no mount point specified.
20:09:23 DEBUG| [stdout] rmdir: failed to remove '/dev/cpuctl': No such file or directory
20:09:23 DEBUG| [stdout] Cleanup done for latency test 2
20:09:23 DEBUG| [stdout]
20:09:23 DEBUG| [stdout] mount: /dev/cpuctl: cpuctl already mounted or mount point busy.
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: failed to mount cpu subsystem... Exiting
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: case1 FAIL
20:09:23 DEBUG| [stdout] mount: /dev/cpuctl: cpuctl already mounted or mount point busy.
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: failed to mount cpu subsystem... Exiting
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: case2 FAIL
20:09:23 DEBUG| [stdout] mount: /dev/cpuctl: cpuctl already mounted or mount point busy.
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: failed to mount cpu subsystem... Exiting
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: case3 FAIL
20:09:23 DEBUG| [stdout] mount: /dev/cpuctl: cpuctl already mounted or mount point busy.
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: failed to mount cpu subsystem... Exiting
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: case4 FAIL
20:09:23 DEBUG| [stdout] mount: /dev/cpuctl: cpuctl already mounted or mount point busy.
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: failed to mount cpu subsystem... Exiting
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: case5 FAIL
20:09:23 DEBUG| [stdout] mount: /dev/cpuctl: cpuctl already mounted or mount point busy.
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: failed to mount cpu subsystem... Exiting
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: case6 FAIL
20:09:23 DEBUG| [stdout] mount: /dev/cpuctl: cpuctl already mounted or mount point busy.
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: failed to mount cpu subsystem... Exiting
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: case7 FAIL
20:09:23 DEBUG| [stdout] mount: /dev/cpuctl: cpuctl already mounted or mount point busy.
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: failed to mount cpu subsystem... Exiting
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: case8 FAIL
20:09:23 DEBUG| [stdout] mount: /dev/cpuctl: cpuctl already mounted or mount point busy.
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: failed to mount cpu subsystem... Exiting
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: case9 FAIL
20:09:23 DEBUG| [stdout] mount: /dev/cpuctl: cpuctl already mounted or mount point busy.
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: failed to mount cpu subsystem... Exiting
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: case10 FAIL
20:09:23 DEBUG| [stdout] mount: /dev/cpuctl: cpuctl already mounted or mount point busy.
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: failed to mount cpu subsystem... Exiting
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: case11 FAIL
20:09:23 DEBUG| [stdout] mount: /dev/cpuctl: cpuctl already mounted or mount point busy.
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: failed to mount cpu subsystem... Exiting
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: case12 FAIL
20:09:23 DEBUG| [stdout] mount: /dev/cpuctl: cpuctl already mounted or mount point busy.
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: failed to mount cpu subsystem... Exiting
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: case13 FAIL
20:09:23 DEBUG| [stdout] mount: /dev/cpuctl: cpuctl already mounted or mount point busy.
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: failed to mount cpu subsystem... Exiting
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: case14 FAIL
20:09:23 DEBUG| [stdout] mount: /dev/cpuctl: cpuctl already mounted or mount point busy.
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: failed to mount cpu subsystem... Exiting
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: case15 FAIL
20:09:23 DEBUG| [stdout] mount: /dev/cpuctl: cpuctl already mounted or mount point busy.
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: failed to mount cpu subsystem... Exiting
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: case16 FAIL
20:09:23 DEBUG| [stdout] mount: /dev/cpuctl: cpuctl already mounted or mount point busy.
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: failed to mount cpu subsystem... Exiting
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: case17 FAIL
20:09:23 DEBUG| [stdout] mount: /dev/cpuctl: cpuctl already mounted or mount point busy.
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: failed to mount cpu subsystem... Exiting
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: case18 FAIL
20:09:23 DEBUG| [stdout] mount: /dev/cpuctl: cpuctl already mounted or mount point busy.
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: failed to mount cpu subsystem... Exiting
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: case19 FAIL
20:09:23 DEBUG| [stdout] mount: /dev/cpuctl: cpuctl already mounted or mount point busy.
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: failed to mount cpu subsystem... Exiting
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: case20 FAIL
20:09:23 DEBUG| [stdout] mount: /dev/cpuctl: cpuctl already mounted or mount point busy.
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: failed to mount cpu subsystem... Exiting
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: case21 FAIL
20:09:23 DEBUG| [stdout] mount: /dev/cpuctl: cpuctl already mounted or mount point busy.
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: failed to mount cpu subsystem... Exiting
20:09:23 DEBUG| [stdout] cpuctl_test_fj 1 TFAIL : ltpapicmd.c:188: case22 FAIL

affects: linux-kvm (Ubuntu) → linux-gcp (Ubuntu)
tags: added: focal hirsute sru-20210906 ubuntu-ltp
Po-Hsu Lin (cypressyew)
Changed in ubuntu-kernel-tests:
assignee: nobody → Po-Hsu Lin (cypressyew)
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