From: Luben Tuikov luben.tuikov@amd.com
[ Upstream commit 0be7ed8e7eb15282b5d0f6fdfea884db594ea9bf ]
Fix potential NULL dereference, in the case when "man", the resource manager might be NULL, when/if we print debug information.
Cc: Alex Deucher Alexander.Deucher@amd.com Cc: Christian König christian.koenig@amd.com Cc: AMD Graphics amd-gfx@lists.freedesktop.org Cc: Dan Carpenter error27@gmail.com Cc: kernel test robot lkp@intel.com Fixes: 7554886daa31ea ("drm/amdgpu: Fix size validation for non-exclusive domains (v4)") Signed-off-by: Luben Tuikov luben.tuikov@amd.com Reviewed-by: Christian König christian.koenig@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index 3be3cba3a16d..cfd78c4a45ba 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -468,8 +468,9 @@ static bool amdgpu_bo_validate_size(struct amdgpu_device *adev, return true;
fail: - DRM_DEBUG("BO size %lu > total memory in domain: %llu\n", size, - man->size); + if (man) + DRM_DEBUG("BO size %lu > total memory in domain: %llu\n", size, + man->size); return false; }