diff --git a/[refs] b/[refs]
index 4aeabecb5ede..db00dbeeb3a8 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ecdc63948763586e101108dfe1ba316ec069fe39
+refs/heads/master: 4edb9a143e31d2e191c199262226e1a5923ff8f7
diff --git a/trunk/kernel/stop_machine.c b/trunk/kernel/stop_machine.c
index dcfb5d731466..51cacd111dbd 100644
--- a/trunk/kernel/stop_machine.c
+++ b/trunk/kernel/stop_machine.c
@@ -111,7 +111,6 @@ static int stop_machine(void)
 	/* If some failed, kill them all. */
 	if (ret < 0) {
 		stopmachine_set_state(STOPMACHINE_EXIT);
-		up(&stopmachine_mutex);
 		return ret;
 	}