netdev - Re: [Bugme-new] [Bug 16120] New: Oops: 0000 [#1] SMP, unable to handle kernel NULL pointer dereference at (null)

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Date:	Mon, 07 Jun 2010 02:58:29 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	akpm@...ux-foundation.org, netdev@...r.kernel.org,
	bugzilla-daemon@...zilla.kernel.org,
	bugme-daemon@...zilla.kernel.org, alex.vizor@...il.com,
	kaber@...sh.net
Subject: Re: [Bugme-new] [Bug 16120] New: Oops: 0000 [#1] SMP, unable to
 handle kernel NULL pointer dereference at (null)

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Mon, 07 Jun 2010 11:48:40 +0200

> [PATCH net-2.6] ipmr: dont corrupt lists
> 
> ipmr_rules_exit() and ip6mr_rules_exit() free a list of items, but
> forget to properly remove these items from list. List head is not
> changed and still points to freed memory.
> 
> This can trigger a fault later when icmpv6_sk_exit() is called.
> 
> Fix is to either reinit list, or use list_del() to properly remove items
> from list before freeing them.
> 
> bugzilla report : https://bugzilla.kernel.org/show_bug.cgi?id=16120
> 
> Introduced by commit d1db275dd3f6e4 (ipv6: ip6mr: support multiple
> tables) and commit f0ad0860d01e (ipv4: ipmr: support multiple tables)
> 
> Reported-by: Alex Zhavnerchik <alex.vizor@...il.com>
> Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>
> CC: Patrick McHardy <kaber@...sh.net>

Applied, thanks a lot Eric.
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