Re: [Xen-devel] [xen-unstable test] 94442: regressions - FAIL

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 16.05.16 at 11:29, <andrew.cooper3@xxxxxxxxxx> wrote:
> On 16/05/16 10:24, Wei Liu wrote:
>> On Mon, May 16, 2016 at 02:57:13AM +0000, osstest service owner wrote:
>>> flight 94442 xen-unstable real [real]
>>> http://logs.test-lab.xenproject.org/osstest/logs/94442/ 
>> [...]
>>>  test-amd64-i386-qemuu-rhel6hvm-intel  9 redhat-install    fail REGR. vs. 
>>> 94368
>> The changes in this flight shouldn't cause failure like this. See below.
>>
>> It is more likely to be caused by SMEP/SMAP fix, which are now in
>> master. It seems that previous run didn't discover this.
> 
> Indeed - definitely from the SMEP/SMAP fix.  What kind of hardware is
> italia0?

E3-1220V2 according to the copy of the spreadsheet of systems
I have. Aiui v2 should have neither SMEP nor SMAP, and hence we
shouldn't even get into cr4_pv32_restore(). Suggests an issue with
alternative insn patching ...

Jan

> In the meantime, I need to fix stack traces to prevent them assuming the
> presence of a frame pointer in debug builds.  This isn't true for some
> of the hand rolled assembly (or for calls through the EFI firmware).
> 
> ~Andrew




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