* Patch "drm/radeon: more strictly validate the UVD codec" has been added to the 3.14-stable tree
@ 2015-05-15 18:14 gregkh
0 siblings, 0 replies; only message in thread
From: gregkh @ 2015-05-15 18:14 UTC (permalink / raw)
To: christian.koenig, alexander.deucher, gregkh; +Cc: stable, stable-commits
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 3.14-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-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From d52cdfa4a0c6406bbfb33206341eaf1fb1555994 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
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@amd.com>
commit d52cdfa4a0c6406bbfb33206341eaf1fb1555994 upstream.
MPEG 2/4 are only supported since UVD3.
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
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
@@ -350,6 +350,29 @@ 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[])
{
@@ -392,7 +415,11 @@ 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) {
@@ -412,8 +439,10 @@ 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@amd.com are
queue-3.14/drm-radeon-more-strictly-validate-the-uvd-codec.patch
queue-3.14/drm-radeon-make-uvd-handle-checking-more-strict.patch
queue-3.14/drm-radeon-disable-semaphores-for-uvd-v1-v2.patch
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2015-05-15 18:14 Patch "drm/radeon: more strictly validate the UVD codec" has been added to the 3.14-stable tree gregkh
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