From: airlied@linux.ie <airlied@linux.ie>
Date: Sun, 13 Mar 2005 05:38:27 +0000 (-0800)
Subject: [PATCH] drm missing memset can crash X server..
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c3cccab0d0ba6cc1a28cfcdc3cfbf296fc083a2d;p=thirdparty%2Fkernel%2Fstable.git

[PATCH] drm missing memset can crash X server..

Egbert Eich reported a bug 2673 on bugs.freedesktop.org and tracked it
down to a missing memset in the setversion ioctl, this causes X server
crashes...

From: Egbert Eich <eich@pdx.freedesktop.org>
Signed-off-by: Dave Airlie <airlied@linux.ie>
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/char/drm/drm_ioctl.c b/drivers/char/drm/drm_ioctl.c
index 6168509742948..7621b35694dbd 100644
--- a/drivers/char/drm/drm_ioctl.c
+++ b/drivers/char/drm/drm_ioctl.c
@@ -326,6 +326,8 @@ int drm_setversion(DRM_IOCTL_ARGS)
 
 	DRM_COPY_FROM_USER_IOCTL(sv, argp, sizeof(sv));
 
+	memset(&version, 0, sizeof(version));
+
 	dev->driver->version(&version);
 	retv.drm_di_major = DRM_IF_MAJOR;
 	retv.drm_di_minor = DRM_IF_MINOR;