Dear all, Kamailio was crashed and I got syslog file, but I don't understand what was happened with this error? Aug 9 16:27:33 Kamailio /usr/sbin/kamailio[32414]: WARNING: tm [t_lookup.c:1559]: WARNING: script writer didn't release transaction Aug 9 16:27:33 Kamailio /usr/sbin/kamailio[32418]: NOTICE: <script>: Set NAT Transaction Flag REGISTER from sip:1008@10.84.8.55 (IP:203.160.19.30:58493) to sip:1008@10.84.8.55 in route[NATDETECT] Aug 9 16:27:33 Kamailio /usr/sbin/kamailio[32418]: INFO: <script>: Unregister user [sip:1008@10.84.8.55] Aug 9 16:27:33 Kamailio /usr/sbin/kamailio[32404]: INFO: <script>: Unregister user [sip:1008@10.84.8.55] Aug 9 16:27:34 Kamailio /usr/sbin/kamailio[32403]: NOTICE: <script>: Set NAT Transaction Flag REGISTER from sip:1004@10.84.8.55 (IP:203.187.4.6:12344) to sip:1004@10.84.8.55 in route[NATDETECT] Aug 9 16:27:34 Kamailio /usr/sbin/kamailio[32403]: INFO: <script>: Unregister user [sip:1004@10.84.8.55] Aug 9 16:27:34 Kamailio /usr/sbin/kamailio[32392]: NOTICE: <script>: Set NAT Transaction Flag REGISTER from sip:1004@10.84.8.55 (IP:203.187.4.6:12344) to sip:1004@10.84.8.55 in route[NATDETECT] Aug 9 16:27:35 Kamailio /usr/sbin/kamailio[32419]: NOTICE: <script>: Set NAT Transaction Flag REGISTER from sip:1008@10.84.8.55 (IP:203.160.19.30:58493) to sip:1008@10.84.8.55 in route[NATDETECT] Aug 9 16:27:35 Kamailio /usr/sbin/kamailio[32390]: NOTICE: <script>: Set NAT Transaction Flag REGISTER from sip:1004@10.84.8.55 (IP:203.187.4.6:12344) to sip:1004@10.84.8.55 in route[NATDETECT] Aug 9 16:27:35 Kamailio kernel: [75478.500981] kamailio[32395] general protection ip:7f9fbd41089d sp:7fffde4e5620 error:0 in tm.so[7f9fbd3d5000+8e000] Aug 9 16:27:35 Kamailio /usr/sbin/kamailio[32406]: NOTICE: <script>: Set NAT Transaction Flag REGISTER from sip:1004@10.84.8.55 (IP:203.187.4.6:17209) to sip:1004@10.84.8.55 in route[NATDETECT] Aug 9 16:27:35 Kamailio /usr/sbin/kamailio[32446]: : <core> [pass_fd.c:293]: ERROR: receive_fd: EOF on 19 Aug 9 16:27:35 Kamailio /usr/sbin/kamailio[32387]: ALERT: <core> [main.c:788]: child process 32395 exited by a signal 11 Aug 9 16:27:35 Kamailio /usr/sbin/kamailio[32387]: ALERT: <core> [main.c:791]: core was generated Aug 9 16:27:35 Kamailio /usr/sbin/kamailio[32446]: : <core> [pass_fd.c:293]: ERROR: receive_fd: EOF on 19 Aug 9 16:27:35 Kamailio /usr/sbin/kamailio[32387]: ALERT: <core> [main.c:788]: child process 32395 exited by a signal 11 Aug 9 16:27:35 Kamailio /usr/sbin/kamailio[32387]: ALERT: <core> [main.c:791]: core was generated Aug 9 16:27:35 Kamailio /usr/sbin/kamailio[32387]: INFO: <core> [main.c:803]: INFO: terminating due to SIGCHLD Aug 9 16:27:35 Kamailio kernel: [75478.963781] kamailio[32387] general protection ip:7f9fbd3ede22 sp:7fffde4e5c90 error:0 in tm.so[7f9fbd3d5000+8e000] Best Regards, Nguyen Anh Tuan Network solution engineer