linux-kernel - Re: PROBLEM: reproducible crash KVM+nf

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Message-ID: <4B6180D1.6050609@trash.net>
Date:	Thu, 28 Jan 2010 13:19:29 +0100
From:	Patrick McHardy <kaber@...sh.net>
To:	Jon Masters <jonathan@...masters.org>
CC:	linux-kernel <linux-kernel@...r.kernel.org>,
	netdev <netdev@...r.kernel.org>, netfilter-devel@...r.kernel.org
Subject: Re: PROBLEM: reproducible crash KVM+nf_conntrack all recent 2.6 kernels

Jon Masters wrote:
> On Thu, 2010-01-28 at 00:46 -0500, Jon Masters wrote:
> 
>> A number of people seem to have reported this crash in various forms,
>> but I have yet to see a solution, and can reproduce on 2.6.33-rc5 this
>> evening so I know it's still present in the latest upstream kernels too.
>> Userspace is Fedora 12, and this happens on both all recent F12 kernels
>> (sporadic in 2.6.31 until recently, solidly reproducible on 2.6.32) and
>> upstream 2.6.32, and 2.6.33-rc5 also - hard to find a "known good".
> 
> Now I can capture the panic()s, I'm rebuilding the 2.6.33-rc5 kernel
> with some better debugging options to at least get some more data.

Could you try "ip6tables -t raw -I PREROUTING -j TRACE" after loading
the ip6t_LOG module? That way we can hopefully see the entire packet
paths through netfilter.
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