Good evening. INTRODUCTION: ------------- We've traced an error, in our case, db_flatstore and siptrace combination causes crash core. siptrace module tries to check siptrace table version on a DB which has no query capabilities and that causes the crash core. This happens from kamailio-4.3.0 where db_check_table_version function call is introduced on siptrace module. OUR CONFIGURATION: ------------------ kamailio.cfg -> ... #!define FLAT_DBURL "flatstore:/expert/siptrace-logs" loadmodule "db_flatstore.so" loadmodule "siptrace.so" modparam("siptrace", "db_url", FLAT_DBURL) modparam("siptrace", "trace_flag", 0) modparam("siptrace", "trace_on", 1) modparam("siptrace", "traced_user_avp", "$avp(s:user)") ... ERROR FLOW: ----------- siptrace.c -> if (db_check_table_version(&db_funcs, db_con, &siptrace_table, SIP_TRACE_TABLE_VERSION) < 0) db.c -> db_check_table_version -> db_table_version(dbf, dbh, table); -> dbf->query(connection, key, 0, val, col, 1, 1, 0, &res) From this last funtion call each thread never returns and remains blocked, and finally crashes with a nice core (it fullfills the entire disk) OUR SUGGESTION: ------------------ We can recommend developers not to call db_check_table_version if a prior query of capabilities doesn't return: DB_CAP_QUERY. We can do it for them on db_check_table_version function. Thanks and best regards Eduardo Lejarreta. -- Dpto. Sistemas SARENET Parque Tecnológico de Zamudio. Edif. 103 48170 Vizcaya Spain. www.sarenet.es Personal contact: IT Manager & VoIP Engineer. www.seeyouonnet.com