linux-kernel - Re: netfilter: Hung task

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Message-ID: <20120319002811.GA30408@1984>
Date:	Mon, 19 Mar 2012 01:28:11 +0100
From:	Pablo Neira Ayuso <pablo@...filter.org>
To:	Sasha Levin <levinsasha928@...il.com>
Cc:	kaber@...sh.net, davem@...emloft.net,
	Dave Jones <davej@...hat.com>, netfilter-devel@...r.kernel.org,
	"linux-kernel@...r.kernel.org List" <linux-kernel@...r.kernel.org>,
	netdev@...r.kernel.org, Christoph Lameter <cl@...ux.com>
Subject: Re: netfilter: Hung task

On Sun, Mar 18, 2012 at 10:52:55PM +0200, Sasha Levin wrote:
> On Sun, Mar 18, 2012 at 4:19 PM, Pablo Neira Ayuso <pablo@...filter.org> wrote:
> > On Sun, Mar 18, 2012 at 12:55:13PM +0200, Sasha Levin wrote:
> >> Hi all,
> >>
> >> I got the following spew after fuzzing using trinity on a KVM tools
> >> guest, using the latest linux-next.
> >>
> >> It reminds me a lot of https://lkml.org/lkml/2012/3/14/375 and
> >> https://lkml.org/lkml/2012/1/14/45
> >
> > You mention neither Linux kernel version nor the way you trigger this.
> >
> > With that little information it's really hard to really know.
> 
> Hum? I've mentioned it happened with "the latest linux-next" (which is
> currently two days old), and using the trinity fuzzer - which means
> that I don't have a specific method to reproduce the problem.

Sorry, I should not read my email diagonally, really.

Looking at the trace, I'd point to some problem in the slub memory
allocator. Please, correct me if I'm wrong.

Christoph?
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