=== modified file 'src/ca/legacy/gdd/gddAppTable.cc'
--- src/ca/legacy/gdd/gddAppTable.cc	2016-05-22 12:38:18 +0000
+++ src/ca/legacy/gdd/gddAppTable.cc	2016-09-29 17:16:21 +0000
@@ -418,8 +418,10 @@
 		}
 
 		// fprintf(stderr,"Adding DD to free_list %d\n",app);
+		attr_table[group][app].sem.lock ();
 		dd->setNext(attr_table[group][app].free_list);
 		attr_table[group][app].free_list=dd;
+		attr_table[group][app].sem.unlock ();
 	}
 	else if (attr_table[group][app].type==gddApplicationTypeNormal)
 	{