From: Mario Limonciello <mario.limoncie...@amd.com> [Why] If amdgpu_dm failed to initalize before amdgpu_dm_initialize_drm_device() completed then freeing atomic_obj will lead to list corruption.
[How] Check if atomic_obj state is initialized before trying to free. Reviewed-by: Harry Wentland <harry.wentl...@amd.com> Signed-off-by: Mario Limonciello <mario.limoncie...@amd.com> Signed-off-by: Ivan Lipski <ivan.lip...@amd.com> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 ++- 1 file changed, 2 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 2d9132c60bef..2113732cc97b 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -5397,7 +5397,8 @@ static int amdgpu_dm_initialize_drm_device(struct amdgpu_device *adev) static void amdgpu_dm_destroy_drm_device(struct amdgpu_display_manager *dm) { - drm_atomic_private_obj_fini(&dm->atomic_obj); + if (dm->atomic_obj.state) + drm_atomic_private_obj_fini(&dm->atomic_obj); } /****************************************************************************** -- 2.43.0