linux-kernel - Re: [PATCH] videobuf_qbuf: fix? possible videobuf

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Message-ID: <20070221120247.GL13958@stusta.de>
Date:	Wed, 21 Feb 2007 13:02:47 +0100
From:	Adrian Bunk <bunk@...sta.de>
To:	Mauro Carvalho Chehab <mchehab@...radead.org>
Cc:	Oleg Nesterov <oleg@...sign.ru>, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...l.org>,
	Chris Wright <chrisw@...s-sol.org>
Subject: Re: [PATCH] videobuf_qbuf: fix? possible videobuf_queue->stream corruption and lockup

On Tue, Jan 23, 2007 at 09:10:08PM -0200, Mauro Carvalho Chehab wrote:
> Em Ter, 2007-01-23 às 20:57 +0300, Oleg Nesterov escreveu:
> > I am pretty sure the bug is real, but the patch may be wrong, please review.
> > 
> > We are doing ->buf_prepare(buf) before adding buf to q->stream list. This
> > means that videobuf_qbuf() should not try to re-add a STATE_PREPARED buffer.
> > 
> > Signed-off-by: Oleg Nesterov <oleg@...sign.ru>
> Signed-off-by: Mauro Carvalho Chehab <mchehab@...radead.org>
> 
> Chris/Adrian,
> 
> IMO, this should also be applied at -stable trees.
>...

Thanks, applied to 2.6.16 (a trivial backport was required since the 
dprintk() was added after 2.6.16).

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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