linux-kernel - Re: KVM segfaults with 3.5 while installing ubuntu 12.04

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Date:	Mon, 06 Aug 2012 15:48:20 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Stefan Priebe - Profihost AG <s.priebe@...fihost.ag>
CC:	mtosatti@...hat.com, kvm@...r.kernel.org,
	qemu-devel <qemu-devel@...gnu.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Kevin Wolf <kwolf@...hat.com>,
	Stefan Hajnoczi <stefanha@...ux.vnet.ibm.com>
Subject: Re: KVM segfaults with 3.5 while installing ubuntu 12.04

On 08/06/2012 03:37 PM, Avi Kivity wrote:
> On 08/06/2012 03:12 PM, Avi Kivity wrote:
>> On 08/06/2012 11:46 AM, Stefan Priebe - Profihost AG wrote:
>> 
>>> But still i got the segfault and core dump - this is my main problem? I
>>> mean qemu-kvm master isn't declared as stable. So i don't care about the
>>> slowness here.
>>> 
>>> What can we do about the core dump and crash?
>> 
>> Okay, I reproduced it; it seems aio=native is the culprit.  You can try
>> aio=threads as a workaround.
>> 
>> Copying some relevant people (context: aio=native on qemu-kvm-1.1.1
>> segfaults pretty early during guest install)
>> 
> 
> The following ought to fix it:

It does.

Kevin: despite aio=native, I get iothreads and pwrites, something is broken.


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