netdev - Re: [PATCH net] net: Fix the rollback test in dev_change

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Message-Id: <20091116.024936.14048478.davem@davemloft.net>
Date:	Mon, 16 Nov 2009 02:49:36 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	jarkao2@...il.com
Cc:	eric.dumazet@...il.com, netdev@...r.kernel.org
Subject: Re: [PATCH net] net: Fix the rollback test in dev_change_name()

From: Jarek Poplawski <jarkao2@...il.com>
Date: Mon, 16 Nov 2009 09:30:24 +0000

> From: Eric Dumazet <eric.dumazet@...il.com>
> 
> net: Fix the rollback test in dev_change_name()
> 
> In dev_change_name() an err variable is used for storing the original
> call_netdevice_notifiers() errno (negative) and testing for a rollback
> error later, but the test for non-zero is wrong, because the err might
> have positive value as well - from dev_alloc_name(). It means the
> rollback for a netdevice with a number > 0 will never happen. (The err
> test is reordered btw. to make it more readable.)
> 
> Signed-off-by: Jarek Poplawski <jarkao2@...il.com>
> Cc: Eric Dumazet <eric.dumazet@...il.com>

Ok.

Eric please give your signoff and I'll put this where it needs
to go.

Thanks.
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