From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH] Revert "af-packet: Use existing netdev reference for
 bound sockets."
Date: Sun, 17 Nov 2013 21:28:12 -0500 (EST)
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From: Salam Noureddine <noureddine@aristanetworks.com>
Date: Sun, 17 Nov 2013 16:28:42 -0800

> This reverts commit 827d978037d7d0bf0860481948c6d26ead10042f.
> 
> The patch introduced a race condition between packet_snd and packet_notifier
> when a net_device is being unregistered. In the case of a bound socket,
> packet_notifier can drop the last reference to the net_device and packet_snd
> might be sending a packet over a freed net_device.

You need to provide a proper "Signed-off-by: ", you need to refer to
commits not just buy SHA1 ID but also by the commit header text in
parenthesis and double quotes.