From: Zhaowei Yuan <zhaowei.yuan@samsung.com>
Date: Wed, 18 Jun 2014 06:33:59 +0000 (+0800)
Subject: drm: fix NULL pointer access by wrong ioctl
X-Git-Tag: omap-for-v3.16/fixes-rc4~48^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1539fb9bd405ee32282ea0a38404f9e008ac5b7a;p=pandora-kernel.git

drm: fix NULL pointer access by wrong ioctl

If user uses wrong ioctl command with _IOC_NONE and argument size
greater than 0, it can cause NULL pointer access from memset of line
463. If _IOC_NONE, don't memset to 0 for kdata.

Signed-off-by: Zhaowei Yuan <zhaowei.yuan@samsung.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
---

Reading git-diff-tree failed