** Tags added: 4.15 bionic -- You received this bug notification because you are a member of Canonical Platform QA Team, which is subscribed to ubuntu-kernel-tests. https://bugs.launchpad.net/bugs/2046148
Title: pkey01, futex_wake04 and memfd_create03 from ubuntu_ltp_syscalls failed with kvm kernel (Fail to open /proc/sys/vm/compact_memory for writing) Status in ubuntu-kernel-tests: New Bug description: This issue pops up after updating to the latest tip of LTP test suite (commit 776b57984 "rwtest: Remove df symlink check") These failures are limited to kvm kernels and they're all failing with the same error message. memfd_create03 failure can only be found on newer kernels as it requires 4.14+. Bisect shows this issue is caused by acf46111b5 "hugetlb: compacting memory to reduce fragmental pages" [1] Test log for pkey01: <<<test_start>>> tag=pkey01 stime=1702291503 cmdline="pkey01" contacts="" analysis=exit <<<test_output>>> incrementing stop tst_hugepage.c:50: TBROK: Failed to open FILE '/proc/sys/vm/compact_memory' for writing: ENOENT (2) <<<execution_status>>> initiation_status="ok" duration=0 termination_type=exited termination_id=2 corefile=no cutime=0 cstime=24 <<<test_end>>> Test log for futex_wake04: <<<test_start>>> tag=futex_wake04 stime=1702291801 cmdline="futex_wake04" contacts="" analysis=exit <<<test_output>>> incrementing stop tst_hugepage.c:50: TBROK: Failed to open FILE '/proc/sys/vm/compact_memory' for writing: ENOENT (2) <<<execution_status>>> initiation_status="ok" duration=0 termination_type=exited termination_id=2 corefile=no cutime=0 cstime=0 <<<test_end>>> Test log for memfd_create03: INFO: Test start time: Wed Dec 13 12:08:19 UTC 2023 COMMAND: /opt/ltp/bin/ltp-pan -q -e -S -a 869738 -n 869738 -f /tmp/ltp-fjHcQSE5qj/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_hugepage.c:50: TBROK: Failed to open FILE '/proc/sys/vm/compact_memory' for writing: ENOENT (2) INFO: ltp-pan reported some tests FAIL LTP Version: 20230929 INFO: Test end time: Wed Dec 13 12:08:19 UTC 2023 Before this change the pkey01 test will be skipped with: <<<test_start>>> tag=pkey01 stime=1702290779 cmdline="pkey01" contacts="" analysis=exit <<<test_output>>> incrementing stop tst_hugepage.c:83: TINFO: 1 hugepage(s) reserved tst_test.c:1560: TINFO: Timeout per run is 0h 00m 30s pkey.h:27: TCONF: syscall(330) __NR_pkey_alloc not supported on your arch Summary: passed 0 failed 0 broken 0 skipped 1 warnings 0 <<<execution_status>>> initiation_status="ok" duration=0 termination_type=exited termination_id=32 corefile=no cutime=0 cstime=0 <<<test_end>>> The futex_wake04 test will pass with: <<<test_start>>> tag=futex_wake04 stime=1702292456 cmdline="futex_wake04" contacts="" analysis=exit <<<test_output>>> incrementing stop tst_hugepage.c:83: TINFO: 1 hugepage(s) reserved tst_test.c:1560: TINFO: Timeout per run is 0h 00m 30s futex_wake04.c:52: TINFO: Testing variant: syscall with old kernel spec futex_wake04.c:90: TINFO: Hugepagesize 2097152 futex_utils.h:59: TINFO: Thread 17485 not sleeping yet futex_wake04.c:75: TPASS: Hi hydra, thread2 awake! Summary: passed 1 failed 0 broken 0 skipped 0 warnings 0 <<<execution_status>>> The memfd_create03 test will pass with: INFO: Test start time: Sat Oct 21 02:09:35 UTC 2023 COMMAND: /opt/ltp/bin/ltp-pan -q -e -S -a 868820 -n 868820 -f /tmp/ltp-a3y6bz0RdQ/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_hugepage.c:83: TINFO: 1 hugepage(s) reserved tst_test.c:1558: TINFO: Timeout per run is 0h 00m 30s memfd_create03.c:171: TINFO: --TESTING WRITE CALL IN HUGEPAGES-- memfd_create03.c:176: TINFO: memfd_create() succeeded memfd_create03.c:70: TPASS: write(3, "LTP", 3) failed as expected memfd_create03.c:171: TINFO: --TESTING PAGE SIZE OF CREATED FILE-- memfd_create03.c:176: TINFO: memfd_create() succeeded memfd_create03.c:43: TINFO: mmap((nil), 2097152, 2, 2, 3, 0) succeeded memfd_create03.c:92: TINFO: munmap(0x7fd6d3600000, 512kB) failed as expected memfd_create03.c:92: TINFO: munmap(0x7fd6d3600000, 1024kB) failed as expected memfd_create03.c:92: TINFO: munmap(0x7fd6d3600000, 1536kB) failed as expected memfd_create03.c:111: TPASS: munmap() fails for page sizes less than 2048kB memfd_create03.c:171: TINFO: --TESTING HUGEPAGE ALLOCATION LIMIT-- memfd_create03.c:176: TINFO: memfd_create() succeeded memfd_create03.c:43: TINFO: mmap((nil), 2097152, 2, 2, 3, 0) succeeded memfd_create03.c:131: TINFO: memfd_create() succeeded memfd_create03.c:136: TPASS: mmap((nil), 2097152, 0, 2, 4, 0) failed as expected Summary: passed 3 failed 0 broken 0 skipped 0 warnings 0 INFO: ltp-pan reported all tests PASS LTP Version: 20230516 INFO: Test end time: Sat Oct 21 02:09:35 UTC 2023 [1] https://github.com/linux-test-project/ltp/commit/acf46111b5cc0f4bfb2309a797f5b1a937e47ff8 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/2046148/+subscriptions -- Mailing list: https://launchpad.net/~canonical-ubuntu-qa Post to : canonical-ubuntu-qa@lists.launchpad.net Unsubscribe : https://launchpad.net/~canonical-ubuntu-qa More help : https://help.launchpad.net/ListHelp
