Issue found on B-KVM 4.15.0-1059.60
startup='Thu Apr 16 19:43:55 2020'
tst_test.c:1246: INFO: Timeout per run is 0h 05m 00s
futex_cmp_requeue01.c:93: INFO: Test 0: waiters: 10, wakes: 3, requeues: 7
futex_cmp_requeue01.c:115: INFO: futex_cmp_requeue() returned 10
futex_cmp_requeue01.c:131: INFO: children woken, futex0: 0, futex1: 7, spurious wakeups: 0
futex_cmp_requeue01.c:176: PASS: futex_cmp_requeue()
futex_cmp_requeue01.c:93: INFO: Test 1: waiters: 10, wakes: 0, requeues: 10
futex_cmp_requeue01.c:115: INFO: futex_cmp_requeue() returned 10
futex_cmp_requeue01.c:131: INFO: children woken, futex0: 0, futex1: 10, spurious wakeups: 0
futex_cmp_requeue01.c:176: PASS: futex_cmp_requeue()
futex_cmp_requeue01.c:93: INFO: Test 2: waiters: 10, wakes: 2, requeues: 6
futex_cmp_requeue01.c:115: INFO: futex_cmp_requeue() returned 8
futex_cmp_requeue01.c:131: INFO: children woken, futex0: 2, futex1: 6, spurious wakeups: 0
futex_cmp_requeue01.c:176: PASS: futex_cmp_requeue()
futex_cmp_requeue01.c:93: INFO: Test 3: waiters: 100, wakes: 50, requeues: 50
futex_cmp_requeue01.c:115: INFO: futex_cmp_requeue() returned 100
futex_cmp_requeue01.c:131: INFO: children woken, futex0: 0, futex1: 50, spurious wakeups: 0
futex_cmp_requeue01.c:176: PASS: futex_cmp_requeue()
futex_cmp_requeue01.c:93: INFO: Test 4: waiters: 100, wakes: 0, requeues: 70
futex_cmp_requeue01.c:115: INFO: futex_cmp_requeue() returned 70
futex_cmp_requeue01.c:131: INFO: children woken, futex0: 30, futex1: 70, spurious wakeups: 0
futex_cmp_requeue01.c:176: PASS: futex_cmp_requeue()
futex_cmp_requeue01.c:84: BROK: fork() failed: EAGAIN/EWOULDBLOCK (11)
Summary:
passed 5
failed 0
skipped 0
warnings 0
tag=futex_cmp_requeue01 stime=1587066235 dur=0 exit=exited stat=2 core=no cu=5 cs=7
This is only affecting B-kvm, passed on Bionic kernel.