Re: [Xen-devel] [xen-4.9-testing test] 120239: regressions - FAIL

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 06.03.18 at 06:19, <osstest-admin@xxxxxxxxxxxxxx> wrote:
> flight 120239 xen-4.9-testing real [real]
> http://logs.test-lab.xenproject.org/osstest/logs/120239/ 
> 
> Regressions :-(
> 
> Tests which did not succeed and are blocking,
> including tests which could not be run:
>  test-amd64-i386-xl-qemuu-win7-amd64  7 xen-boot          fail REGR. vs. 
> 120000

FTR - presumably another instance of the flush_area_mask() lockup
that was first seen in flight 118594 on master. I still have no idea
what's going on, nor how to go about debugging this (other than
adding "async-show-all", as already suggested in the reply to that
other flight report). There were no recent changes to the flushing
logic on this branch, so I wonder whether some pre-existing timing
window has got larger with the Meltdown or Spectre mitigations.

Jan


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