linux-kernel - Re: [ 12/53] net: In unregister_netdevice

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Message-Id: <20120518.014131.519437851000725829.davem@davemloft.net>
Date:	Fri, 18 May 2012 01:41:31 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	herton.krzesinski@...onical.com
Cc:	ben@...adent.org.uk, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	ebiederm@...ssion.com, eric.dumazet@...il.com
Subject: Re: [ 12/53] net: In unregister_netdevice_notifier unregister the
 netdevices.

From: Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com>
Date: Fri, 18 May 2012 02:09:05 -0300

> On Fri, May 18, 2012 at 03:33:06AM +0100, Ben Hutchings wrote:
>> 3.2.18-stable review patch.  If anyone has any objections, please let me know.
>> 
>> ------------------
>> 
>> From: "Eric W. Biederman" <ebiederm@...ssion.com>
>> 
>> [ Upstream commit 7d3d43dab4e978d8d9ad1acf8af15c9b1c4b0f0f ]
>> 
>> We already synthesize events in register_netdevice_notifier and synthesizing
>> events in unregister_netdevice_notifier allows to us remove the need for
>> special case cleanup code.
>> 
>> This change should be safe as it adds no new cases for existing callers
>> of unregiser_netdevice_notifier to handle.
> 
> It seems this introduces a regression later fixed by commit
> c57b54684060c8aced64a5b78ff69ff289af97b9

Indeed, but thankfully that only hits people who try to unload the
pktgen module which is a pretty small group of people :)
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