tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 0c8efd610b58cb23cefdfa12015799079aef94ae commit: 36cc549d59864b7161f0e23d710c1c4d1b9cf022 drm/amd/display: disable CRTCs with NULL FB on their primary plane (V2)
smatch warnings: drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:4765 dm_atomic_check_plane_state_fb() error: 'crtc_state' dereferencing possible ERR_PTR() # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=36cc549d59864b7161f0e23d710c1c4d1b9cf022 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git remote update linus git checkout 36cc549d59864b7161f0e23d710c1c4d1b9cf022 vim +/crtc_state +4765 drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c 62f55537 Andrey Grodzovsky 2017-08-18 4748 36cc549d Shirish S 2018-02-28 4749 static int dm_atomic_check_plane_state_fb(struct drm_atomic_state *state, 36cc549d Shirish S 2018-02-28 4750 struct drm_crtc *crtc) 36cc549d Shirish S 2018-02-28 4751 { 36cc549d Shirish S 2018-02-28 4752 struct drm_plane *plane; 36cc549d Shirish S 2018-02-28 4753 struct drm_crtc_state *crtc_state; 36cc549d Shirish S 2018-02-28 4754 36cc549d Shirish S 2018-02-28 4755 WARN_ON(!drm_atomic_get_new_crtc_state(state, crtc)); 36cc549d Shirish S 2018-02-28 4756 36cc549d Shirish S 2018-02-28 4757 drm_for_each_plane_mask(plane, state->dev, crtc->state->plane_mask) { 36cc549d Shirish S 2018-02-28 4758 struct drm_plane_state *plane_state = 36cc549d Shirish S 2018-02-28 4759 drm_atomic_get_plane_state(state, plane); 36cc549d Shirish S 2018-02-28 4760 36cc549d Shirish S 2018-02-28 4761 if (IS_ERR(plane_state)) 36cc549d Shirish S 2018-02-28 4762 return -EDEADLK; 36cc549d Shirish S 2018-02-28 4763 36cc549d Shirish S 2018-02-28 4764 crtc_state = drm_atomic_get_crtc_state(plane_state->state, crtc); 36cc549d Shirish S 2018-02-28 @4765 if (crtc->primary == plane && crtc_state->active) { 36cc549d Shirish S 2018-02-28 4766 if (!plane_state->fb) 36cc549d Shirish S 2018-02-28 4767 return -EINVAL; 36cc549d Shirish S 2018-02-28 4768 } 36cc549d Shirish S 2018-02-28 4769 } 36cc549d Shirish S 2018-02-28 4770 return 0; 36cc549d Shirish S 2018-02-28 4771 } 36cc549d Shirish S 2018-02-28 4772 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
