netdev - Re: use after free bug in socket code

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Date:	Mon, 06 Jul 2009 19:07:09 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	LW@...O-electronics.de
Cc:	netdev@...r.kernel.org, urs.thuermann@...kswagen.de,
	oliver.hartkopp@...kswagen.de
Subject: Re: use after free bug in socket code

From: Lothar Waßmann <LW@...O-electronics.de>
Date: Thu, 2 Jul 2009 13:26:30 +0200

> Hi,
> 
> while developing a canbus driver (with kernel 2.6.30-rc4) I
> encountered a use-after-free bug that led to the following crash (due
> to CONFIG_DEBUG_SLAB being enabled):
 ...
> With the following patch I could alleviate the problem and did not
> find any negative side effects, but I'm not sure, whether this is the
> Right Thing(TM), since I'm not too familiar with the networking code:
 ...
> Any comments on this?

A patch like this shouldn't be needed.

Can one of the CAN folks look into this?
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