For drm_gem_object_unreference callers are required to hold dev->struct_mutex, which these paths don't. Enforcing this requirement has become a bit more strict with
commit ef4c6270bf2867e2f8032e9614d1a8cfc6c71663 Author: Daniel Vetter daniel.vetter@ffwll.ch Date: Thu Oct 15 09:36:25 2015 +0200
drm/gem: Check locking in drm_gem_object_unreference
Cc: Alex Deucher alexander.deucher@amd.com Signed-off-by: Daniel Vetter daniel.vetter@intel.com --- drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c index 6fcbbcc2e99e..cfb6caad2a73 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c @@ -263,7 +263,7 @@ out_unref:
} if (fb && ret) { - drm_gem_object_unreference(gobj); + drm_gem_object_unreference_unlocked(gobj); drm_framebuffer_unregister_private(fb); drm_framebuffer_cleanup(fb); kfree(fb);