linux-kernel - Re: [PATCH 1/2] dereferencing freed in saa5246a.c

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Message-ID: <20090506173048.0ad84f85@pedra.chehab.org>
Date:	Wed, 6 May 2009 17:30:48 -0300
From:	Mauro Carvalho Chehab <mchehab@...hat.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] dereferencing freed in saa5246a.c

Em Wed, 06 May 2009 17:13:33 +0100
Alan Cox <alan@...rguk.ukuu.org.uk> escreveu:

> From: Dan Carpenter <error27@...il.com>
> 
> I lowered the kfree(t) down a couple lines and removed the superflous
> "t->vdev = NULL;"
> 
> regards,
> dan carpenter
> 
> Signed-off-by: Dan Carpenter <error27@...il.com>
> Signed-off-by: Alan Cox <alan@...ux.intel.com>
Acked-by: Mauro Carvalho Chehab <mchehab@...hat.com>

> ---
> 
>  drivers/media/video/saa5246a.c |    3 +--
>  1 files changed, 1 insertions(+), 2 deletions(-)
> 
> 
> diff --git a/drivers/media/video/saa5246a.c b/drivers/media/video/saa5246a.c
> index da47b2f..155804b 100644
> --- a/drivers/media/video/saa5246a.c
> +++ b/drivers/media/video/saa5246a.c
> @@ -1092,9 +1092,8 @@ static int saa5246a_probe(struct i2c_client *client,
>  	/* Register it */
>  	err = video_register_device(t->vdev, VFL_TYPE_VTX, -1);
>  	if (err < 0) {
> -		kfree(t);
>  		video_device_release(t->vdev);
> -		t->vdev = NULL;
> +		kfree(t);
>  		return err;
>  	}
>  	return 0;
> 


-- 

Cheers,
Mauro
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