Re: KVM guest crashes

[Avi Kivity <avi@redhat.com>]

Alexander Graf wrote:
> Avi Kivity wrote:
>   
>> Alexander Graf wrote:
>>     
>>> The guest kernels included here are openSUSE 11.0 (2.6.25) and 11.1
>>> (2.6.27) kernels.
>>>
>>> Find the tests here: http://alex.csgraf.de/kvm-tests.tar.bz2
>>> And some logs here (NPT enabled): http://alex.csgraf.de/kvm-logs.tar.bz2
>>>
>>> I'm somewhat lost on the reason for these failures, so if you do have
>>> some time on your hands, please give me a hand debugging this! If I'd
>>> had to guess, I'd say it's either an APIC issue and/or guest memory
>>> corruption.
>>>   
>>>       
>> I'd guess memory corruption.
>>
>> Does running a uniprocessor guest help?  What about a uniprocessor
>> guest pinned to one host core?
>>     
>
> So last night I started several guests with -smp 8 but without network
> to see if IO load is causing the problems. All VMs are down, but one
> panic log is rather new:
>
> Stuck ??
> Stuck ??
> Stuck ??
> Stuck ??
> Stuck ??
> Stuck ??
> BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
> IP: [<ffffffff80237454>] cpu_attach_domain+0x84/0x207
>   

This is right on startup, if I read things right.

I suggest checking if you have the latest BIOS update applied.  I've had 
bad experiences with un-updated processors.

-- 
error compiling committee.c: too many arguments to function