From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: [PATCH net-next] fix buf of assigning skb->tail to
 network_header
Date: Sun, 10 Mar 2013 10:58:48 +0100
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References: <1362908909-45697-1-git-send-email-honkiko@gmail.com>
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Cc: netdev@vger.kernel.org, davem@davemloft.net,
	stephen@networkplumber.org, zhiguo.hong@emc.com
To: Hong Zhiguo <honkiko@gmail.com>
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On Sun, 2013-03-10 at 17:48 +0800, Hong Zhiguo wrote:
> in the case of NET_SKBUFF_DATA_USES_OFFSET,  direct pointer
> assignment to skb->network_header is a dangerous bug.

But skb->tail is not a pointer.

Really you need to explain more than this confusing changelog