diff --git a/[refs] b/[refs]
index 325628f624a6..4f24c0a42459 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 0e7d5bb8480e10f98f89bd1d418a430393b1e995
+refs/heads/master: 000b9151d7851cc1e490b2a76d0206e524f43cca
diff --git a/trunk/drivers/char/tty_io.c b/trunk/drivers/char/tty_io.c
index e1b46bc7e43c..0e6866fe0f96 100644
--- a/trunk/drivers/char/tty_io.c
+++ b/trunk/drivers/char/tty_io.c
@@ -1161,8 +1161,8 @@ void disassociate_ctty(int on_exit)
 	tty = get_current_tty();
 	if (tty) {
 		tty_pgrp = get_pid(tty->pgrp);
-		mutex_unlock(&tty_mutex);
 		lock_kernel();
+		mutex_unlock(&tty_mutex);
 		/* XXX: here we race, there is nothing protecting tty */
 		if (on_exit && tty->driver->type != TTY_DRIVER_TYPE_PTY)
 			tty_vhangup(tty);