futex_wake04 from ubuntu_ltp_syscalls failed on BM.Standard2.52 X-4.15-oracle / B-oracle with "TBROK: Test killed by SIGBUS!"

[Po-Hsu Lin]

Issue found on 4.15.0-1059.65-oracle
BM.Standard2.52 only

Test failed with:
 startup='Wed Nov 18 04:47:41 2020'
 tst_hugepage.c:58: TINFO: 1 hugepage(s) reserved
 tst_test.c:1250: TINFO: Timeout per run is 0h 05m 00s
 futex_wake04.c:56: TINFO: Testing variant: syscall with old kernel spec
 futex_wake04.c:94: TINFO: Hugepagesize 2097152
 tst_test.c:1300: TBROK: Test killed by SIGBUS!

 Summary:
 passed 0
 failed 0
 skipped 0
 warnings 0
 tag=futex_wake04 stime=1605674861 dur=1 exit=exited stat=2 core=no cu=0 cs=15

This is different from bug 1892165, which is just for i386 and with different error message.
This is not a regression, this can be found in 4.15.0-1051.55 oracle on this instance as well.

[Po-Hsu Lin (cypressyew)]

Just like the pkey01 (bug 1849093) failure, this issue was caused by move_pages12 test (bug 1831043)

If you just run these two tests on BM.Standard2.52 with 4.15.0-1031-oracle, with move_pages12 first, this test will fail with "TBROK: Test killed by SIGBUS!"

But if you run just this test, it will pass without any issue.

[Po-Hsu Lin (cypressyew)]

For 4.15.0-1100.111~16.04.1-azure
Found on Standard_D48_v3 only

[Po-Hsu Lin (cypressyew)]

Found on Standard_D48_v3 T-azure 4.15.0-1103.114~14.04.1

[Po-Hsu Lin (cypressyew)]

This test didn't fail with any instance on 4.15.0-1103.114~16.04.1-azure this cycle

[Francis Ginther (fginther)]

Seen with linux-oracle 4.15.0-1065.73.