This is a note to let you know that I've just added the patch titled
drm/radeon: more strictly validate the UVD codec
to the 4.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-radeon-more-strictly-validate-the-uvd-codec.patch
and it can be found in the queue-4.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d52cdfa4a0c6406bbfb33206341eaf1fb1555994 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@xxxxxxx>
Date: Thu, 7 May 2015 15:19:24 +0200
Subject: drm/radeon: more strictly validate the UVD codec
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From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@xxxxxxx>
commit d52cdfa4a0c6406bbfb33206341eaf1fb1555994 upstream.
MPEG 2/4 are only supported since UVD3.
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/radeon/radeon_uvd.c | 33 +++++++++++++++++++++++++++++++--
1 file changed, 31 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/radeon/radeon_uvd.c
+++ b/drivers/gpu/drm/radeon/radeon_uvd.c
@@ -396,6 +396,29 @@ static int radeon_uvd_cs_msg_decode(uint
return 0;
}
+static int radeon_uvd_validate_codec(struct radeon_cs_parser *p,
+ unsigned stream_type)
+{
+ switch (stream_type) {
+ case 0: /* H264 */
+ case 1: /* VC1 */
+ /* always supported */
+ return 0;
+
+ case 3: /* MPEG2 */
+ case 4: /* MPEG4 */
+ /* only since UVD 3 */
+ if (p->rdev->family >= CHIP_PALM)
+ return 0;
+
+ /* fall through */
+ default:
+ DRM_ERROR("UVD codec not supported by hardware %d!\n",
+ stream_type);
+ return -EINVAL;
+ }
+}
+
static int radeon_uvd_cs_msg(struct radeon_cs_parser *p, struct radeon_bo *bo,
unsigned offset, unsigned buf_sizes[])
{
@@ -440,7 +463,11 @@ static int radeon_uvd_cs_msg(struct rade
case 0:
/* it's a create msg, calc image size (width * height) */
img_size = msg[7] * msg[8];
+
+ r = radeon_uvd_validate_codec(p, msg[4]);
radeon_bo_kunmap(bo);
+ if (r)
+ return r;
/* try to alloc a new handle */
for (i = 0; i < RADEON_MAX_UVD_HANDLES; ++i) {
@@ -460,8 +487,10 @@ static int radeon_uvd_cs_msg(struct rade
return -EINVAL;
case 1:
- /* it's a decode msg, calc buffer sizes */
- r = radeon_uvd_cs_msg_decode(msg, buf_sizes);
+ /* it's a decode msg, validate codec and calc buffer sizes */
+ r = radeon_uvd_validate_codec(p, msg[4]);
+ if (!r)
+ r = radeon_uvd_cs_msg_decode(msg, buf_sizes);
radeon_bo_kunmap(bo);
if (r)
return r;
Patches currently in stable-queue which might be from christian.koenig@xxxxxxx are
queue-4.0/drm-radeon-more-strictly-validate-the-uvd-codec.patch
queue-4.0/drm-radeon-make-vce-handle-check-more-strict.patch
queue-4.0/drm-radeon-fix-userptr-bo-unpin-bug-v3.patch
queue-4.0/drm-radeon-make-uvd-handle-checking-more-strict.patch
queue-4.0/drm-radeon-disable-semaphores-for-uvd-v1-v2.patch
--
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