netdev - Re: net-2.6 [Bug-Fix][dccp]: fix oops caused after failed initialisation

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Date:	Mon, 15 Mar 2010 16:07:04 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	gerrit@....abdn.ac.uk
Cc:	acme@...hat.com, netdev@...r.kernel.org, dccp@...r.kernel.org
Subject: Re: net-2.6 [Bug-Fix][dccp]: fix oops caused after failed
 initialisation

From: Gerrit Renker <gerrit@....abdn.ac.uk>
Date: Mon, 15 Mar 2010 07:13:19 +0100

> dccp: fix panic caused by failed initialisation
> 
> This fixes a kernel panic reported thanks to Andre Noll:
> 
> if DCCP is compiled into the kernel and any out of the initialisation
> steps in net/dccp/proto.c:dccp_init() fail, a subsequent attempt to create
> a SOCK_DCCP socket will panic, since inet{,6}_create() are not prevented
> from creating DCCP sockets.
> 
> This patch fixes the problem by propagating a failure in dccp_init() to
> dccp_v{4,6}_init_net(), and from there to dccp_v{4,6}_init(), so that the
> DCCP protocol is not made available if its initialisation fails.
> 
> Signed-off-by: Gerrit Renker <gerrit@....abdn.ac.uk>

Applied, thanks Gerrit.
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