linux-kernel - Re: [kvm-devel] [BUG] 2.6.23.1 host freezes when running kvm

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Message-ID: <471B366B.7040706@qumranet.com>
Date:	Sun, 21 Oct 2007 13:22:19 +0200
From:	Avi Kivity <avi@...ranet.com>
To:	Bart Trojanowski <bart@...ie.net>
CC:	kvm-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [kvm-devel] [BUG] 2.6.23.1 host freezes when running kvm

Bart Trojanowski wrote:
> * Bart Trojanowski <bart@...ie.net> [071019 20:03]:
>   
>> * Bart Trojanowski <bart@...ie.net> [071019 17:00]:
>> <snip>
>>     
>>> Once the system is booted, I attached using vnc, then I ssh in and ran
>>> 'svn update'... and the host machine froze.
>>>
>>> The last messages I on my serial console are:
>>>
>>> kvm: unhandled rdmsr: 0x417
>>> kvm: unhandled rdmsr: 0xc0000400
>>>       
>> <snip>
>>     
>>> I noticed that linus merged a bunch of KVM changes last week.  I will
>>> try those out next.
>>>       
>> It looks like Linus' tree has the fix already.
>>     
>
> I spoke too soon.  The latest from Linus' tree also freezes... but it
> took overnight to get there.  There was no particular load on it.
>
> This system was previously running 2.6.22.y w/o problems with a similar
> kvm pattern.
>
> This time it froze w/o showing any kvm rdmsr messages.  And while it
> froze sometime over night, I cannot be sure when.  Here is the SysRq's
> "showPc" output:
>   

Does 2.6.23 hang immediately?  If so, these may be two separate problems 
and it's worth bisecting to find out what's the fix in 2.6.24-rc.

Of course we'll have to address the later hang as well.


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

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