--- src/auth_none.c.orig	2014-06-13 01:10:47.841746827 -0400
+++ src/auth_none.c	2014-06-13 01:10:49.637812282 -0400
@@ -113,6 +113,7 @@
 	bool_t dummy;
 	extern mutex_t authnone_lock;
 
+	mutex_lock(&authnone_lock);
 	assert(xdrs != NULL);
 
 	ap = authnone_private;