--- a/kernel/locking/mutex-debug.c	2016-01-10 20:01:32.000000000 -0300
+++ b/kernel/locking/mutex-debug.c	2016-09-11 02:38:11.331048350 -0300
@@ -117,4 +117,4 @@
 	lock->magic = NULL;
 }
 
-EXPORT_SYMBOL_GPL(mutex_destroy);
+EXPORT_SYMBOL(mutex_destroy);