m_suspend(struct mapped_device *md, struct dm_table *map,
 	 * We call dm_wait_for_completion to wait for all existing requests
 	 * to finish.
 	 */
-	r = dm_wait_for_completion(md, task_state);
+	if (map)
+		r = dm_wait_for_completion(md, task_state);
 	if (!r)
 		set_bit(dmf_suspended_flag, &md->flags);
 
-- 
2.51.0[PATCH 5.10.y] dm: fix NULL pointer dereference in __dm_suspend()Sasha Levin <sashal@kernel.org> undefinedstable@vger.kernel.org undefined undefined undefinedƒ-ƒš4