Re: [xen-unstable-smoke test] 158488: regressions - FAIL

[Jan Beulich <jbeulich@xxxxxxxx>]

On 18.01.2021 16:43, osstest service owner wrote:
> flight 158488 xen-unstable-smoke real [real]
> flight 158490 xen-unstable-smoke real-retest [real]
> http://logs.test-lab.xenproject.org/osstest/logs/158488/
> http://logs.test-lab.xenproject.org/osstest/logs/158490/
> 
> Regressions :-(
> 
> Tests which did not succeed and are blocking,
> including tests which could not be run:
>  test-arm64-arm64-xl-xsm       8 xen-boot                 fail REGR. vs. 
> 158453

Hmm, I've looked some at the log, but not being used to looking
at Arm logs I'm not sure whether some of the messages are
anomalies. What likely is indicative of the problem are

systemd-udevd[452]: e0010000.kcs: Worker [464] processing SEQNUM=3352 is taking 
a long time

rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:

I'm having trouble though connecting such to the changes under
test. If anyone has any helpful thoughts, please share.

Jan