5.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Hersen Wu hersenxs.wu@amd.com
[ 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@amd.com Acked-by: Tom Chung chiahsuan.chung@amd.com Signed-off-by: Hersen Wu hersenxs.wu@amd.com Tested-by: Daniel Wheeler daniel.wheeler@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 5 ++++- 1 file changed, 4 insertions(+), 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 index 3bfc4aa328c6..869b38908b28 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2263,7 +2263,10 @@ 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.