netdev - Re: (ipt_log_packet, sb_add) 3.6.0-rc2 kernel panic - not syncing; Fatal exception in interrupt

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Message-ID: <1346629078.2563.75.camel@edumazet-glaptop>
Date:	Mon, 03 Sep 2012 01:37:58 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Florian Westphal <fw@...len.de>
Cc:	Sami Farin <hvtaifwkbgefbaei@...il.com>, netdev@...r.kernel.org,
	e1000-devel@...ts.sourceforge.net
Subject: Re: (ipt_log_packet, sb_add) 3.6.0-rc2 kernel panic - not syncing;
 Fatal exception in interrupt

On Mon, 2012-09-03 at 00:53 +0200, Eric Dumazet wrote:

> First I thought changing demux to not do the lookup of TIMEWAIT slot in
> __inet_lookup_established(), then it sounds not optimal to redo the full
> lookup for ESTABLISHED sockets later in TCP stack.
> 
> So it seems we should fix xt_LOG instead
> 
> Thanks Florian !
> 
> [PATCH] xt_LOG: take care of timewait sockets
> 
> Sami Farin reported crashes in xt_LOG because it assumes skb->sk is a
> full blown socket.
> 
> But with TCP early demux, we can have skb->sk pointing to a timewait
> socket.

Seems other fixes are needed, for example in nfnetlink_log.c

I'll send a v2


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