netdev - Re: __pskb_pull_tail oops from 2.6.35

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Message-Id: <20110927.160804.528213323197711241.davem@davemloft.net>
Date:	Tue, 27 Sep 2011 16:08:04 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	davej@...hat.com
Cc:	netdev@...r.kernel.org
Subject: Re: __pskb_pull_tail oops from 2.6.35

From: Dave Jones <davej@...hat.com>
Date: Tue, 27 Sep 2011 16:03:28 -0400

> A user just reported this on a fairly old kernel (running the latest -longterm patch).
> I had a look through net/core/skbuff.c since 2.6.35, and didn't see anything obvious.
> Does this look familiar to anyone ? 

I would say that something far outside of __pskb_pull_tail() is corrupting the
SKB state.  He has a bunch of netfilter stuff loaded so the possibilities are
endless :-)

Any chance to figure out exactly what NULL dereference happens inside of
__pskb_pull_tail()?
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