diff -up trunk/src/descriptions_store.c.double-free trunk/src/descriptions_store.c
--- trunk/src/descriptions_store.c.double-free	2011-04-10 03:02:26.000000000 +0200
+++ trunk/src/descriptions_store.c	2011-10-03 12:36:46.306696462 +0200
@@ -116,8 +116,10 @@ void store_descriptions (const struct pa
 					found_real_page = 1;
 				}
 
-				free (trace_info.name);
-				free (buf);
+				if (buf) {
+					free (trace_info.name);
+					free (buf);
+				}
 			}
 		}