drm/amd/display: Stop amdgpu_dm initialize when stream nums greater t…

…han 6 [ Upstream commit 84723eb ] [Why] Coverity reports OVERRUN warning. Should abort amdgpu_dm initialize. [How] Return failure to amdgpu_dm_init. Reviewed-by: Harry Wentland <[email protected]> Acked-by: Tom Chung <[email protected]> Signed-off-by: Hersen Wu <[email protected]> Tested-by: Daniel Wheeler <[email protected]> Signed-off-by: Alex Deucher <[email protected]> Signed-off-by: Sasha Levin <[email protected]>
xanmod · Sep 8, 2024 · 94cb777 · 94cb777
1 parent 08e7755
commit 94cb777
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -4357,7 +4357,10 @@ 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.