From: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
To: linux-fbdev@vger.kernel.org
Subject: Re: [patch] video: mb862xxfb: prevent divide by zero bug
Date: Thu, 23 Aug 2012 20:30:43 +0000 [thread overview]
Message-ID: <503692F3.40402@gmx.de> (raw)
In-Reply-To: <20120818155541.GB22424@elgon.mountain>
On 08/18/2012 03:55 PM, Dan Carpenter wrote:
> Do a sanity check on these before using them as divisors.
>
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Applied.
Thanks,
Florian Tobias Schandinat
>
> diff --git a/drivers/video/mb862xx/mb862xxfbdrv.c b/drivers/video/mb862xx/mb862xxfbdrv.c
> index 00ce1f3..57d940b 100644
> --- a/drivers/video/mb862xx/mb862xxfbdrv.c
> +++ b/drivers/video/mb862xx/mb862xxfbdrv.c
> @@ -328,6 +328,8 @@ static int mb862xxfb_ioctl(struct fb_info *fbi, unsigned int cmd,
> case MB862XX_L1_SET_CFG:
> if (copy_from_user(l1_cfg, argp, sizeof(*l1_cfg)))
> return -EFAULT;
> + if (l1_cfg->dh = 0 || l1_cfg->dw = 0)
> + return -EINVAL;
> if ((l1_cfg->sw >= l1_cfg->dw) && (l1_cfg->sh >= l1_cfg->dh)) {
> /* downscaling */
> outreg(cap, GC_CAP_CSC,
>
prev parent reply other threads:[~2012-08-23 20:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-18 15:55 [patch] video: mb862xxfb: prevent divide by zero bug Dan Carpenter
[not found] ` <20120818155541.GB22424-mgFCXtclrQlZLf2FXnZxJA@public.gmane.org>
2012-08-18 18:35 ` Anatolij Gustschin
2012-08-23 20:30 ` Florian Tobias Schandinat [this message]
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