This is a note to let you know that I've just added the patch titled
drm/amd/display: Stop amdgpu_dm initialize when stream nums greater than 6
to the 6.1-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-amd-display-stop-amdgpu_dm-initialize-when-strea.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit cc5993223388d5ab13e068a2679d15dbdb6783e2
Author: Hersen Wu <hersenxs.wu@xxxxxxx>
Date: Wed Apr 24 16:00:19 2024 -0400
drm/amd/display: Stop amdgpu_dm initialize when stream nums greater than 6
[ Upstream commit 84723eb6068c50610c5c0893980d230d7afa2105 ]
[Why]
Coverity reports OVERRUN warning. Should abort amdgpu_dm
initialize.
[How]
Return failure to amdgpu_dm_init.
Reviewed-by: Harry Wentland <harry.wentland@xxxxxxx>
Acked-by: Tom Chung <chiahsuan.chung@xxxxxxx>
Signed-off-by: Hersen Wu <hersenxs.wu@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 6189685af1fd..1f8f0ce45c2a 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -4359,7 +4359,10 @@ static int amdgpu_dm_initialize_drm_device(struct amdgpu_device *adev)
/* There is one primary plane per CRTC */
primary_planes = dm->dc->caps.max_streams;
- ASSERT(primary_planes <= AMDGPU_MAX_PLANES);
+ if (primary_planes > AMDGPU_MAX_PLANES) {
+ DRM_ERROR("DM: Plane nums out of 6 planes\n");
+ return -EINVAL;
+ }
/*
* Initialize primary planes, implicit planes for legacy IOCTLS.
