Index: trunk/Ohana/src/opihi/pcontrol/jobstack.c
===================================================================
--- trunk/Ohana/src/opihi/pcontrol/jobstack.c	(revision 7917)
+++ trunk/Ohana/src/opihi/pcontrol/jobstack.c	(revision 8296)
@@ -21,4 +21,5 @@
 
   /* print list */
+  LockStack (stack);
   gprint (GP_LOG, "Njobs: %d\n", stack[0].Nobject);
   for (i = 0; i < stack[0].Nobject; i++) {
@@ -28,4 +29,8 @@
     gprint (GP_LOG, "%s  %s\n", job[0].argv[0], job[0].hostname);
   }
+  UnlockStack (stack);
+
   return (TRUE);
 }
+
+// Safe with PTHREAD_MUTEX_INITIALIZER lock