Comment 10 for bug 1882511

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Luke Nowakowski-Krijger (lukenow) wrote :

Found on 2022.01.31/impish/kvm/5.13.0-1013.14 and 2022.01.31/bionic/kvm/4.15.0-1107.109 and is failing with

19:54:27 DEBUG| [stdout] # selftests: timers: raw_skew
19:56:27 DEBUG| [stdout] # Estimating clock drift: 43.443(est) 0.0(act) [FAILED]
19:56:27 DEBUG| [stdout] # # Totals: pass:0 fail:0 xfail:0 xpass:0 skip:0 error:0
19:56:27 DEBUG| [stdout] not ok 1 selftests: timers: raw_skew # exit=1

This passed in other cycles with # Estimating clock drift: 0.0(est) 0.0(act) [OK]
but is now failing because it seems the function clock_gettime* in the test is now actually returning a value when it was not before.

Regardless this seems like a case of vm clock flakiness. Maybe something in glibc changed that caused this to finally return a value for some reason? Havent looked into it too much but doesent seem like a kernel issue.