Re: Re: 2.6.26-rc8 pv_ops causes Unhandled invalid opcode fault/trap

[Guillaume Rousse <Guillaume.Rousse@inria.fr>]

Jeremy Fitzhardinge a écrit :
> Guillaume Rousse wrote:
>> Jeremy Fitzhardinge a écrit :
>>> Guillaume Rousse wrote:
>>>> Jeremy Fitzhardinge a écrit :
>>>>>> FWIW, I just tried 2.6.26-rc1 and it booted fine.  I can narrow it 
>>>>>> down further if that'd be useful to you.
>>>>>>   
>>>>>
>>>>> Yes, please.
>>>> Was there any final conclusion there ? Because I'm currently trying 
>>>> a 2.6.27.5 with the same kind of issue:
>>>
>>> I don't know of any outstanding bugs which cause this kind of 
>>> symptom.  What's happening on the Linux side when the domain crashes 
>>> this way?
>> Immediate crash, without further information.
>>
>> I've opened a but report on mandriva bugzilla:
>> https://qa.mandriva.com/show_bug.cgi?id=46470
> 
> Does earlyprintk=xen reveal anything more?  What does the rip 
> (ffffffff8020b3ed) map to in the kernel?
I guess earlyprintk=xen is a dom0 option, because passing it to domU 
didn't change anything. The given adress map to set_page_prot, according 
to the System.map file.

BTW, it only happens with ISCSI-stored hosts, whereas it works OK with 
LVM-stored hosts (tough on slightly different hardware). On other hosts, 
the guest kernel boots OK, and then fails to mount underlying FS (but 
that's a different issue). I updated upstream report with details.
-- 
Guillaume Rousse
Service des Moyens Informatiques
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