linux-kernel - Re: [PATCH 1/1] drm/mediatek: do not dereference NULL

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Mon, 23 May 2016 11:35:19 +0100
From:	Eric Engestrom <eric.engestrom@...tec.com>
To:	Heinrich Schuchardt <xypron.glpk@....de>
CC:	David Airlie <airlied@...ux.ie>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Jie Qiu <jie.qiu@...iatek.com>, <linux-kernel@...r.kernel.org>,
	<dri-devel@...ts.freedesktop.org>,
	<linux-mediatek@...ts.infradead.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 1/1] drm/mediatek: do not dereference NULL

On Wed, May 18, 2016 at 10:59:50PM +0200, Heinrich Schuchardt wrote:
> After having verified that dpi is NULL we should not
> dereference it.
> 
> Signed-off-by: Heinrich Schuchardt <xypron.glpk@....de>
> ---
>  drivers/gpu/drm/mediatek/mtk_dpi.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
> index d05ca79..3dbd00d 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dpi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
> @@ -433,7 +433,7 @@ static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi,
>  	unsigned int factor;
>  
>  	if (!dpi) {
> -		dev_err(dpi->dev, "invalid argument\n");
> +		dev_err(NULL, "invalid argument\n");
>  		return -EINVAL;
>  	}
>  
> -- 
> 2.1.4

Seems obvious ^^
Reviewed-by: Eric Engestrom <eric.engestrom@...tec.com>