netdev - Re: [PATCH] net: fix sk_buff head without data area

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Message-Id: <20130604.172745.973899787878302690.davem@davemloft.net>
Date:	Tue, 04 Jun 2013 17:27:45 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	pablo@...filter.org
Cc:	netdev@...r.kernel.org, eric.dumazet@...il.com
Subject: Re: [PATCH] net: fix sk_buff head without data area

From: Pablo Neira Ayuso <pablo@...filter.org>
Date: Mon,  3 Jun 2013 21:28:43 +0200

> Eric Dumazet spotted that we have to check skb->head instead
> of skb->data as skb->head points to the beginning of the
> data area of the skbuff. Similarly, we have to initialize the
> skb->head pointer, not skb->data in __alloc_skb_head.
> 
> After this fix, netlink crashes in the release path of the
> sk_buff, so let's fix that as well.
> 
> This bug was introduced in (0ebd0ac net: add function to
> allocate sk_buff head without data area).
> 
> Reported-by: Eric Dumazet <eric.dumazet@...il.com>
> Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>

Applied and queued up for -stable, thanks.
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