[03/11] drm missing memset can crash X server..

[Greg KH]

-stable review patch.  If anyone has any objections, please let us know.

------------------


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@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Dave Airlie <airlied@xxxxxxxx>
Signed-off-by: Chris Wright <chrisw@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

diff -Nru a/drivers/char/drm/drm_ioctl.c b/drivers/char/drm/drm_ioctl.c
--- a/drivers/char/drm/drm_ioctl.c	2005-03-09 10:53:42 +11:00
+++ b/drivers/char/drm/drm_ioctl.c	2005-03-09 10:53:43 +11:00
@@ -326,6 +326,8 @@

 	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;

-
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