netdev - Re: [PATCH 2.6.36 stable] vlan: Avoid hwaccel vlan packets when vid not used.

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Date:	Mon, 08 Nov 2010 13:26:36 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	jesse@...ira.com
Cc:	stable@...nel.org, netdev@...r.kernel.org
Subject: Re: [PATCH 2.6.36 stable] vlan: Avoid hwaccel vlan packets when
 vid not used.

From: Jesse Gross <jesse@...ira.com>
Date: Mon,  8 Nov 2010 13:23:01 -0800

> Normally hardware accelerated vlan packets are quickly dropped if
> there is no corresponding vlan device configured.  The one exception
> is promiscuous mode, where we allow all of these packets through so
> they can be picked up by tcpdump.  However, this behavior causes a
> crash if we actually try to receive these packets.  This fixes that
> crash by ignoring packets with vids not corresponding to a configured
> device in the vlan hwaccel routines and then dropping them before they
> get to consumers in the network stack.
> 
> This patch applies only to 2.6.36 stable.  The problem was introduced
> in that release and is already fixed by larger changes to the vlan
> code in 2.6.37.
> 
> Reported-by: Ben Greear <greearb@...delatech.com>
> Tested-by: Nikola Ciprich <extmaillist@...uxbox.cz>
> Signed-off-by: Jesse Gross <jesse@...ira.com>

Acked-by: David S. Miller <davem@...emloft.net>
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