Hello freeradius-devel, I'm running Freeradius 20070322 snapshot with postgresql backend. (I tried older versions too) I have 3 questions for you, all related to $subject. Everything is working fine (the radius is getting the nas clients from the database, doing db auth/acct, etc.) until we send a -HUP to the radiusd.. First one: 8x------8x----- $ /radius/sbin/radiusd -fsX $ killall -HUP radiusd rlm_sql (sql): Closing sqlsocket 4 rlm_sql (sql): Closing sqlsocket 3 rlm_sql (sql): Closing sqlsocket 2 rlm_sql (sql): Closing sqlsocket 1 rlm_sql (sql): Closing sqlsocket 0 read_config_files: reading realms Thu Mar 22 16:21:23 2007 : Info: rlm_sql (sql): Driver rlm_sql_postgresql (module rlm_sql_postgresql) loaded and linked Thu Mar 22 16:21:23 2007 : Info: rlm_sql (sql): Attempting to connect to radius@127.0.0.1:5432/dbradius Segmentation fault No core file.. I solved this problem by commenting out the "we do other magic" in mainconfig.c lines 1059->1064. This will disable debug level change on the fly facility, it's not that important anyway 8x-----8x------ Second: 8x-----8x------ rlm_sql_postgresql: Status: PGRES_TUPLES_OK rlm_sql_postgresql: query affected rows = 3 , fields = 5 rlm_sql (sql): Read entry nasname=1.2.3.4,shortname=nume,secret=secret rlm_sql (sql): Adding client 1.2.3.4 (nume) to clients list Segmentation fault (core dumped) #0 rbtree_insert (tree=0x7d4c4c55, Data=0x80025808) at rbtree.c:246 246 Current = tree->Root; (gdb) bt #0 rbtree_insert (tree=0x7d4c4c55, Data=0x80025808) at rbtree.c:246 #1 0x8000685d in client_add (clients=0x800fbb18, client=0x80025808) at client.c:231 #2 0xb7db29ca in rlm_sql_instantiate (conf=0x8012efc8, instance=0x7d4c4c55) at rlm_sql.c:347 #3 0x8000f77c in find_module_instance (modules=0x8012e5e0, instname=0x80130100 "sql") at modules.c:322 #4 0x80010243 in setup_modules (reload=1) at modules.c:917 #5 0x8000ed65 in read_mainconfig (reload=1) at mainconfig.c:1162 #6 0x80012dc0 in main (argc=2, argv=0xbfdb1a34) at radiusd.c:560 I add DEBUG2("OLD: %p",(void *)old_clients); DEBUG2("NEW: %p",(void *)clients); right before mainconfig.clients = clients; clients_free(old_clients); in mainparse.c Start radiusd -fsX OLD: (nil) NEW: 0x800fbb18 killall -HUP radiusd: OLD: 0x800fbb18 NEW: 0x800fbb18 rlm_sql (sql): Adding client 1.2.3.4 (nume) to clients list Segmentation fault (core dumped) So, we free the same location.. I guess the problem is in the clients_parse_section which doesnt return a new address space. clients.c - if (clients) return clients; + if (clients) clients_free(clients); mainconfig.c - clients_free(old_clients); + if ((void *)old_clients != (void *)clients) + clients_free(old_clients); solved the problem. Do I still need the clients_free(old_clients)? 8x----------8x------------ Three: 8x------------------------ There is any other way to make the radius re-reread its clients from database, without an expensive HUP (and not so easy to send when you add entries to db)? 8x------------------------ Thanks for scrolling this down.. Best wishes, Claudiu FILIP claudiu@globtel.ro Phone : +40344880100 http://www.globtel.ro Fax: +40344880113