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[Bug 1966417] Re: memcontrol04 in ubuntu_ltp_controllers failed on J-azure (Low events in F)

To: canonical-ubuntu-qa@xxxxxxxxxxxxxxxxxxx
From: Po-Hsu Lin <1966417@xxxxxxxxxxxxxxxxxx>
Date: Thu, 10 Jul 2025 08:38:16 -0000
Reply-to: Bug 1966417 <1966417@xxxxxxxxxxxxxxxxxx>
Sender: noreply@xxxxxxxxxxxxx
Test passed after updating our fork, hints removed. Closing this bug.
Note that some kernels can still be found failing with bug 2114753. It will be tracking there.

** Changed in: linux (Ubuntu)
       Status: Incomplete => Invalid

** Changed in: ubuntu-kernel-tests
     Assignee: (unassigned) => Po-Hsu Lin (cypressyew)

** Changed in: ubuntu-kernel-tests
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1966417

Title:
  memcontrol04 in ubuntu_ltp_controllers failed on J-azure (Low events
  in F)

Status in ubuntu-kernel-tests:
  Fix Released
Status in linux package in Ubuntu:
  Invalid

Bug description:
  Issue found on I-azure 5.15.0-1002.3

  Test failed with:
    memcontrol04.c:214: TFAIL: Expect: (F low events=419) == 0

    HINT: You _MAY_ be hit by known kernel failures:

    Low events in F: https://bugzilla.suse.com/show_bug.cgi?id=1196298

  Test log:
  INFO: Test start time: Fri Mar 25 10:03:44 UTC 2022
  COMMAND:    /opt/ltp/bin/ltp-pan -q  -e -S   -a 119719     -n 119719  -f /tmp/ltp-mFNzOrxoBY/alltests -l /dev/null  -C /dev/null -T /dev/null
  LOG File: /dev/null
  FAILED COMMAND File: /dev/null
  TCONF COMMAND File: /dev/null
  Running tests.......
  tst_device.c:88: TINFO: Found free device 3 '/dev/loop3'
  tst_supported_fs_types.c:88: TINFO: Kernel supports ext2
  tst_supported_fs_types.c:50: TINFO: mkfs.ext2 does exist
  tst_supported_fs_types.c:88: TINFO: Kernel supports ext3
  tst_supported_fs_types.c:50: TINFO: mkfs.ext3 does exist
  tst_supported_fs_types.c:88: TINFO: Kernel supports ext4
  tst_supported_fs_types.c:50: TINFO: mkfs.ext4 does exist
  tst_supported_fs_types.c:88: TINFO: Kernel supports xfs
  tst_supported_fs_types.c:50: TINFO: mkfs.xfs does exist
  tst_supported_fs_types.c:88: TINFO: Kernel supports btrfs
  tst_supported_fs_types.c:50: TINFO: mkfs.btrfs does exist
  tst_supported_fs_types.c:155: TINFO: Skipping vfat as requested by the test
  tst_supported_fs_types.c:155: TINFO: Skipping exfat as requested by the test
  tst_supported_fs_types.c:155: TINFO: Skipping tmpfs as requested by the test
  tst_test.c:1528: TINFO: Testing on ext2
  tst_test.c:996: TINFO: Formatting /dev/loop3 with ext2 opts='' extra opts=''
  mke2fs 1.46.5 (30-Dec-2021)
  tst_test.c:1456: TINFO: Timeout per run is 0h 05m 00s
  memcontrol04.c:118: TINFO: Child 119783 in leaf_C: Allocating pagecache: 52428800
  memcontrol04.c:118: TINFO: Child 119785 in leaf_D: Allocating pagecache: 52428800
  memcontrol04.c:118: TINFO: Child 119786 in leaf_F: Allocating pagecache: 52428800
  memcontrol04.c:99: TINFO: Child 119787 in trunk_G: Allocating anon: 155189248
  memcontrol04.c:170: TPASS: Expect: (A/B memory.current=54177792) ~= 52428800
  memcontrol04.c:176: TPASS: Expect: (A/B/C memory.current=30691328) ~= 34603008
  memcontrol04.c:178: TPASS: Expect: (A/B/D memory.current=22523904) ~= 17825792
  memcontrol04.c:180: TPASS: Expect: (A/B/E memory.current=0) ~= 0
  memcontrol04.c:182: TINFO: A/B/F memory.current=950272
  memcontrol04.c:99: TINFO: Child 119788 in trunk_G: Allocating anon: 174063616
  memcontrol04.c:195: TINFO: A: low events=1645, oom events=0
  memcontrol04.c:195: TINFO: B: low events=1645, oom events=0
  memcontrol04.c:195: TINFO: G: low events=0, oom events=0
  memcontrol04.c:208: TPASS: Expect: (C oom events=0) == 0
  memcontrol04.c:211: TPASS: Expect: (C low events=413) > 0
  memcontrol04.c:208: TPASS: Expect: (D oom events=0) == 0
  memcontrol04.c:211: TPASS: Expect: (D low events=413) > 0
  memcontrol04.c:208: TPASS: Expect: (E oom events=0) == 0
  memcontrol04.c:214: TPASS: Expect: (E low events=0) == 0
  memcontrol04.c:208: TPASS: Expect: (F oom events=0) == 0
  memcontrol04.c:214: TFAIL: Expect: (F low events=410) == 0
  tst_test.c:1528: TINFO: Testing on ext3
  tst_test.c:996: TINFO: Formatting /dev/loop3 with ext3 opts='' extra opts=''
  mke2fs 1.46.5 (30-Dec-2021)
  tst_test.c:1456: TINFO: Timeout per run is 0h 05m 00s
  memcontrol04.c:118: TINFO: Child 119798 in leaf_C: Allocating pagecache: 52428800
  memcontrol04.c:118: TINFO: Child 119800 in leaf_D: Allocating pagecache: 52428800
  memcontrol04.c:118: TINFO: Child 119801 in leaf_F: Allocating pagecache: 52428800
  memcontrol04.c:99: TINFO: Child 119802 in trunk_G: Allocating anon: 155189248
  memcontrol04.c:170: TPASS: Expect: (A/B memory.current=54173696) ~= 52428800
  memcontrol04.c:176: TPASS: Expect: (A/B/C memory.current=30658560) ~= 34603008
  memcontrol04.c:178: TPASS: Expect: (A/B/D memory.current=22560768) ~= 17825792
  memcontrol04.c:180: TPASS: Expect: (A/B/E memory.current=0) ~= 0
  memcontrol04.c:182: TINFO: A/B/F memory.current=942080
  memcontrol04.c:99: TINFO: Child 119803 in trunk_G: Allocating anon: 174063616
  memcontrol04.c:195: TINFO: A: low events=1617, oom events=0
  memcontrol04.c:195: TINFO: B: low events=1617, oom events=0
  memcontrol04.c:195: TINFO: G: low events=0, oom events=0
  memcontrol04.c:208: TPASS: Expect: (C oom events=0) == 0
  memcontrol04.c:211: TPASS: Expect: (C low events=406) > 0
  memcontrol04.c:208: TPASS: Expect: (D oom events=0) == 0
  memcontrol04.c:211: TPASS: Expect: (D low events=406) > 0
  memcontrol04.c:208: TPASS: Expect: (E oom events=0) == 0
  memcontrol04.c:214: TPASS: Expect: (E low events=0) == 0
  memcontrol04.c:208: TPASS: Expect: (F oom events=0) == 0
  memcontrol04.c:214: TFAIL: Expect: (F low events=403) == 0
  tst_test.c:1528: TINFO: Testing on ext4
  tst_test.c:996: TINFO: Formatting /dev/loop3 with ext4 opts='' extra opts=''
  mke2fs 1.46.5 (30-Dec-2021)
  tst_test.c:1456: TINFO: Timeout per run is 0h 05m 00s
  memcontrol04.c:118: TINFO: Child 119814 in leaf_C: Allocating pagecache: 52428800
  memcontrol04.c:118: TINFO: Child 119815 in leaf_D: Allocating pagecache: 52428800
  memcontrol04.c:118: TINFO: Child 119816 in leaf_F: Allocating pagecache: 52428800
  memcontrol04.c:99: TINFO: Child 119817 in trunk_G: Allocating anon: 155189248
  memcontrol04.c:170: TPASS: Expect: (A/B memory.current=54079488) ~= 52428800
  memcontrol04.c:176: TPASS: Expect: (A/B/C memory.current=30711808) ~= 34603008
  memcontrol04.c:178: TPASS: Expect: (A/B/D memory.current=22614016) ~= 17825792
  memcontrol04.c:180: TPASS: Expect: (A/B/E memory.current=0) ~= 0
  memcontrol04.c:182: TINFO: A/B/F memory.current=741376
  memcontrol04.c:99: TINFO: Child 119818 in trunk_G: Allocating anon: 174063616
  memcontrol04.c:195: TINFO: A: low events=1613, oom events=0
  memcontrol04.c:195: TINFO: B: low events=1613, oom events=0
  memcontrol04.c:195: TINFO: G: low events=0, oom events=0
  memcontrol04.c:208: TPASS: Expect: (C oom events=0) == 0
  memcontrol04.c:211: TPASS: Expect: (C low events=405) > 0
  memcontrol04.c:208: TPASS: Expect: (D oom events=0) == 0
  memcontrol04.c:211: TPASS: Expect: (D low events=405) > 0
  memcontrol04.c:208: TPASS: Expect: (E oom events=0) == 0
  memcontrol04.c:214: TPASS: Expect: (E low events=0) == 0
  memcontrol04.c:208: TPASS: Expect: (F oom events=0) == 0
  memcontrol04.c:214: TFAIL: Expect: (F low events=402) == 0
  tst_test.c:1528: TINFO: Testing on xfs
  tst_test.c:996: TINFO: Formatting /dev/loop3 with xfs opts='' extra opts=''
  tst_test.c:1456: TINFO: Timeout per run is 0h 05m 00s
  memcontrol04.c:118: TINFO: Child 119834 in leaf_C: Allocating pagecache: 52428800
  memcontrol04.c:118: TINFO: Child 119842 in leaf_D: Allocating pagecache: 52428800
  memcontrol04.c:118: TINFO: Child 119843 in leaf_F: Allocating pagecache: 52428800
  memcontrol04.c:99: TINFO: Child 119844 in trunk_G: Allocating anon: 155189248
  memcontrol04.c:170: TPASS: Expect: (A/B memory.current=54173696) ~= 52428800
  memcontrol04.c:176: TPASS: Expect: (A/B/C memory.current=30654464) ~= 34603008
  memcontrol04.c:178: TPASS: Expect: (A/B/D memory.current=22720512) ~= 17825792
  memcontrol04.c:180: TPASS: Expect: (A/B/E memory.current=0) ~= 0
  memcontrol04.c:182: TINFO: A/B/F memory.current=786432
  memcontrol04.c:99: TINFO: Child 119845 in trunk_G: Allocating anon: 174063616
  memcontrol04.c:195: TINFO: A: low events=1681, oom events=0
  memcontrol04.c:195: TINFO: B: low events=1681, oom events=0
  memcontrol04.c:195: TINFO: G: low events=0, oom events=0
  memcontrol04.c:208: TPASS: Expect: (C oom events=0) == 0
  memcontrol04.c:211: TPASS: Expect: (C low events=422) > 0
  memcontrol04.c:208: TPASS: Expect: (D oom events=0) == 0
  memcontrol04.c:211: TPASS: Expect: (D low events=422) > 0
  memcontrol04.c:208: TPASS: Expect: (E oom events=0) == 0
  memcontrol04.c:214: TPASS: Expect: (E low events=0) == 0
  memcontrol04.c:208: TPASS: Expect: (F oom events=0) == 0
  memcontrol04.c:214: TFAIL: Expect: (F low events=419) == 0
  tst_test.c:1528: TINFO: Testing on btrfs
  tst_test.c:996: TINFO: Formatting /dev/loop3 with btrfs opts='' extra opts=''
  tst_test.c:1456: TINFO: Timeout per run is 0h 05m 00s
  memcontrol04.c:118: TINFO: Child 119873 in leaf_C: Allocating pagecache: 52428800
  memcontrol04.c:118: TINFO: Child 119875 in leaf_D: Allocating pagecache: 52428800
  memcontrol04.c:118: TINFO: Child 119876 in leaf_F: Allocating pagecache: 52428800
  memcontrol04.c:99: TINFO: Child 119877 in trunk_G: Allocating anon: 155189248
  memcontrol04.c:170: TPASS: Expect: (A/B memory.current=54173696) ~= 52428800
  memcontrol04.c:176: TPASS: Expect: (A/B/C memory.current=30654464) ~= 34603008
  memcontrol04.c:178: TPASS: Expect: (A/B/D memory.current=22720512) ~= 17825792
  memcontrol04.c:180: TPASS: Expect: (A/B/E memory.current=0) ~= 0
  memcontrol04.c:182: TINFO: A/B/F memory.current=786432
  memcontrol04.c:99: TINFO: Child 119878 in trunk_G: Allocating anon: 174063616
  memcontrol04.c:195: TINFO: A: low events=1681, oom events=0
  memcontrol04.c:195: TINFO: B: low events=1681, oom events=0
  memcontrol04.c:195: TINFO: G: low events=0, oom events=0
  memcontrol04.c:208: TPASS: Expect: (C oom events=0) == 0
  memcontrol04.c:211: TPASS: Expect: (C low events=422) > 0
  memcontrol04.c:208: TPASS: Expect: (D oom events=0) == 0
  memcontrol04.c:211: TPASS: Expect: (D low events=422) > 0
  memcontrol04.c:208: TPASS: Expect: (E oom events=0) == 0
  memcontrol04.c:214: TPASS: Expect: (E low events=0) == 0
  memcontrol04.c:208: TPASS: Expect: (F oom events=0) == 0
  memcontrol04.c:214: TFAIL: Expect: (F low events=419) == 0

  HINT: You _MAY_ be hit by known kernel failures:

  Low events in F: https://bugzilla.suse.com/show_bug.cgi?id=1196298

  Summary:
  passed   55
  failed   5
  broken   0
  skipped  0
  warnings 0
  INFO: ltp-pan reported some tests FAIL
  LTP Version: 20220121
  INFO: Test end time: Fri Mar 25 10:04:04 UTC 2022

  This is a new test added recently:
  https://github.com/linux-test-project/ltp/commit/f68379f901e174aff8466d03f59d6d178da305a5

  And being tested in the tip-testing branch on our local fork (testing
  on Azure only, for evaluation purpose).

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