--- 05625f6c2293970877157a3044a9f229a7e462d5
+++ 23bd09cd042ea9e6987763bb4261a331de24e4a7
@@ -314,7 +314,7 @@ int ptrace_detach(struct task_struct *ch
 		child->exit_code = data;
 		dead = __ptrace_detach(current, child);
 		if (!child->exit_state)
-			wake_up_state(child, TASK_TRACED | TASK_STOPPED);
+			wake_up_process(child);
 	}
 	write_unlock_irq(&tasklist_lock);