netdev - Re: [PATCH] net: bridge: check the length of skb after nf_bridge_maybe_copy

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Date:	Fri, 31 Dec 2010 11:10:03 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	xiaosuo@...il.com
Cc:	shemminger@...ux-foundation.org, bridge@...ts.linux-foundation.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH] net: bridge: check the length of skb after
 nf_bridge_maybe_copy_header()

From: Changli Gao <xiaosuo@...il.com>
Date: Sat, 25 Dec 2010 21:41:30 +0800

> Since nf_bridge_maybe_copy_header() may change the length of skb,
> we should check the length of skb after it to handle the ppoe skbs.
> 
> Signed-off-by: Changli Gao <xiaosuo@...il.com>

This is really strange.

packet_length() subtracts VLAN_HLEN from the value it returns, so the
correct fix seems to be to make this function handle the PPPOE case
too.

Otherwise I suspect you have many other functions to fix as well.

I'm not applying this patch.
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