netdev - Re: gro: Fix potential use after free

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Message-Id: <20081226.145759.148181271.davem@davemloft.net>
Date:	Fri, 26 Dec 2008 14:57:59 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	herbert@...dor.apana.org.au
Cc:	netdev@...r.kernel.org
Subject: Re: gro: Fix potential use after free

From: Herbert Xu <herbert@...dor.apana.org.au>
Date: Sat, 27 Dec 2008 09:44:01 +1100

> gro: Fix potential use after free
> 
> The initial skb may have been freed after napi_gro_complete in
> napi_gro_receive if it was merged into an existing packet.  Thus
> we cannot check same_flow (which indicates whether it was merged)
> after calling napi_gro_complete.
> 
> This patch fixes this by saving the same_flow status before the
> call to napi_gro_complete.
> 
> Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>

Applied, thanks Herbert.
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