Re: [Xen-devel] [xen-unstable test] 116832: regressions - FAIL

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 05/12/2017 09:30, Jan Beulich wrote:
>>>> On 05.12.17 at 09:49, <osstest-admin@xxxxxxxxxxxxxx> wrote:
>> flight 116832 xen-unstable real [real]
>> http://logs.test-lab.xenproject.org/osstest/logs/116832/ 
>>
>> Regressions :-(
>>
>> Tests which did not succeed and are blocking,
>> including tests which could not be run:
>>  test-amd64-amd64-xl-qemut-win7-amd64 10 windows-install  fail REGR. vs. 
>> 116744
> This is a blue screen, recurring, and has first been reported in flight
> 116779, i.e. was likely introduced in the batch ending in commit
> 4cd0fad645. Among those the most likely candidates appear to be
> the SVM changes (the failures are all on AMD hardware). The logs
> there also have huge amounts of "Unexpected nested vmexit",
> albeit not directly connected with the failed test afaict.

The unexpected nested vmexit is from a previous test, (and hopefully the
nested virt test, as that path shouldn't be reachable elsehow).

The windows boot which actually failed has:

Dec  5 04:20:08.735216 (XEN) CR access emulation failed (1): d1v0 64bit @ 
0010:fffff8000ce9e4ab -> 66 f3 6d 48 8b 7c 24 08 c3 cc cc cc cc cc cc cc
Dec  5 04:21:49.555130 (XEN) stdvga.c:173:d1v0 entering stdvga mode

which I expect is the root of the problem.

~Andrew

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