[SR-Users] Kamailio memmory leak after it does not receive response for CANCEL message

Hi everyone, I am using Kamailio-4.1.5 and Kamailio-4.2.5 but with this both version I had a problem: Connection diagrams: SIP client ---- SBC --- Kamailio --- MGC/MGW --- GSM/PSTN subscriber Scenario: - Caller (SIP) make a new call to GSM (PSTN) subscriber - When GSM/PSTN is ringing or not ringing, Caller cancel call (Caller send CANCEL message) - But MGC does not send response message for CANCEL message - After about 120s (fr_inv_timer), Kamailio send 487 Request Terminated to SBC. I reproduced this bugs 4-5 times and same problem is happen I attached capture file and log when I show shared memory (using kamcmd core.shmmem) and tm statistics (using kamcmd tm.stats). And time Kamailio start memory leak is 08-30-15-10:18:53 Could you help me solve this problem? Thank you so much! -- --------------------------- *Bui Thi Minh Yen*