linux-kernel - Re: [PATCH] input: imon driver for SoundGraph iMON/Antec Veris IR devices

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Date:	Tue, 29 Dec 2009 13:12:40 -0500
From:	Jarod Wilson <jarod@...sonet.com>
To:	Dan Carpenter <error27@...il.com>, Jarod Wilson <jarod@...hat.com>,
	linux-input@...r.kernel.org, linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] input: imon driver for SoundGraph iMON/Antec Veris IR
 devices

On 12/29/2009 12:01 PM, Dan Carpenter wrote:
>
> I ran smatch (http://repo.or.cz/w/smatch.git) on it and there are
> some bugs worth fixing.
>
> drivers/input/misc/imon.c +331 free_imon_context(7) error: dereferencing freed memory 'context'
> Move the debug line earlier.
>
> drivers/input/misc/imon.c +1812 imon_probe(216) error: dereferencing undefined:  'context->idev'
> drivers/input/misc/imon.c +1876 imon_probe(280) error: dereferencing undefined:  'context->touch'
> The allocation func can return NULL.  They probably won't fail in real
> life, but it will slightly annoy every person checking running smatch
> over the entire kernel (me).
>
> drivers/input/misc/imon.c +1979 imon_probe(383) error: double unlock 'mutex:&context->lock'
> drivers/input/misc/imon.c +1983 imon_probe(387) error: double unlock 'mutex:&context->lock'
> It sometimes unlocks both before and after the goto.

Yeah, I think I've actually already fixed every one of these problems in 
the past 24 hours (a few just a few minutes ago), stay tuned for a 
repost, hopefully later today. :)

Thanks much,

-- 
Jarod Wilson
jarod@...sonet.com
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