This is a note to let you know that I've just added the patch titled
drm/amdgpu: Using uninitialized value *size when calling amdgpu_vce_cs_reloc
to the 6.6-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-amdgpu-using-uninitialized-value-size-when-calli.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 12f024b8b6c2724ffb59c9c10406f3f085b32cf7
Author: Jesse Zhang <jesse.zhang@xxxxxxx>
Date: Wed Apr 24 17:10:46 2024 +0800
drm/amdgpu: Using uninitialized value *size when calling amdgpu_vce_cs_reloc
[ Upstream commit 88a9a467c548d0b3c7761b4fd54a68e70f9c0944 ]
Initialize the size before calling amdgpu_vce_cs_reloc, such as case 0x03000001.
V2: To really improve the handling we would actually
need to have a separate value of 0xffffffff.(Christian)
Signed-off-by: Jesse Zhang <jesse.zhang@xxxxxxx>
Suggested-by: Christian König <christian.koenig@xxxxxxx>
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
index 1904edf684071..88a3aa36b41d7 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
@@ -742,7 +742,8 @@ int amdgpu_vce_ring_parse_cs(struct amdgpu_cs_parser *p,
uint32_t created = 0;
uint32_t allocated = 0;
uint32_t tmp, handle = 0;
- uint32_t *size = &tmp;
+ uint32_t dummy = 0xffffffff;
+ uint32_t *size = &dummy;
unsigned int idx;
int i, r = 0;
