rtmutex: Add missing rcu_read_unlock() in debug_rt_mutex_print_deadlock()

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/kernel/rtmutex-debug.c b/kernel/rtmutex-debug.c
index cb1ced6967ad539508db0c6a0b732b9c23ff89cc..a2e7e7210f3e733b8b427b762b224a4c380e9ae6 100644 (file)
--- a/kernel/rtmutex-debug.c
+++ b/kernel/rtmutex-debug.c
@@ -94,8 +94,10 @@ void debug_rt_mutex_print_deadlock(struct rt_mutex_waiter *waiter)
                return;
        }
 
-       if (!debug_locks_off())
+       if (!debug_locks_off()) {
+               rcu_read_unlock();
                return;
+       }
 
        printk("\n============================================\n");
        printk(  "[ BUG: circular locking deadlock detected! ]\n");