--- x/drivers/gpu/drm/drm_file.c
+++ y/drivers/gpu/drm/drm_file.c
@@ -287,6 +287,7 @@ void drm_file_free(struct drm_file *file
 	if (dev->driver->postclose)
 		dev->driver->postclose(dev, file);
 
+	drm_gem_release(dev, file);
 	drm_prime_destroy_file_private(&file->prime);
 
 	WARN_ON(!list_empty(&file->event_list));