linux-kernel - Re: KVM induced panic on 2.6.38[2367] & 2.6.39

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Message-ID: <4DE61DE0.9030100@redhat.com>
Date:	Wed, 01 Jun 2011 14:09:20 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Brad Campbell <lists2009@...rfbargle.com>
CC:	Hugh Dickins <hughd@...gle.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Borislav Petkov <bp@...en8.de>, linux-kernel@...r.kernel.org,
	kvm@...r.kernel.org, linux-mm <linux-mm@...ck.org>,
	netdev <netdev@...r.kernel.org>
Subject: Re: KVM induced panic on 2.6.38[2367] & 2.6.39

On 06/01/2011 01:53 PM, Brad Campbell wrote:
> On 01/06/11 17:41, Avi Kivity wrote:
>> On 06/01/2011 12:40 PM, Avi Kivity wrote:
>>>
>>> bridge and netfilter, IIRC this was also the problem last time.
>>>
>>> Do you have any ebtables loaded?
>
> Never heard of them, but making a cursory check just in case..
>
> brad@srv:/raid10/src/linux-2.6.39$ grep EBTABLE .config
> # CONFIG_BRIDGE_NF_EBTABLES is not set
>
>>> Can you try building a kernel without ebtables? Without netfilter at 
>>> all?
>
> Well, without netfilter I can't get it to crash. The problem is 
> without netfilter I can't actually use it the way I use it to get it 
> to crash.
>
> I rebooted into a netfilter kernel, and did all the steps I'd used on 
> the no-netfilter kernel and it ticked along happily.
>
> So the result of the experiment is inconclusive. Having said that, the 
> backtraces certainly smell networky.
>
> To get it to crash, I have to start IE in the VM and https to the 
> public address of the machine, which is then redirected by netfilter 
> back into another of the VM's.
>
> I can https directly to the other VM's address, but that does not 
> cause it to crash, however without netfilter loaded I can't bounce off 
> the public IP. It's all rather confusing really.
>
> What next Sherlock?
>

Maybe the Sherlocks at netdev@ can tell.

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

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