[sr-dev] [tracker] Task opened: Memory leak in tm module?

[sip-router]

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A new Flyspray task has been opened.  Details are below. 

User who did this - Morten Tryfoss (mtryfoss) 

Attached to Project - sip-router
Summary - Memory leak in tm module?
Task Type - Bug Report
Category - tm
Status - Unconfirmed
Assigned To - 
Operating System - Linux
Severity - Medium
Priority - Normal
Reported Version - 4.1
Due in Version - Undecided
Due Date - Undecided
Details - We have got a production system with a slow but steady increase of shared memory use when routing calls.

The kamailio version is 4.1.1.


I'm able to reproduce this in a lab. The call scenario is like this:
Call from asterisk using udp to kamailio, which looks up the registered user (tested both udp and tls) and forwards using t_relay().
The call is then either answered or canceled.

When I stop kamailio I get two of those lines for each call that has been routed:
Aug 25 15:23:55 sip1stage /usr/sbin/kamailio[14285]: qm_status:    8372. N  address=0x7fc21369f348 frag=0x7fc21369f318 size=56 used=1
Aug 25 15:23:55 sip1stage /usr/sbin/kamailio[14285]: qm_status:           alloc'd from tm: t_fwd.c: prepare_new_uac(574)
Aug 25 15:23:55 sip1stage /usr/sbin/kamailio[14285]: qm_status:          start check=f0f0f0f0, end check= c0c0c0c0, abcdefed
Aug 25 15:23:55 sip1stage /usr/sbin/kamailio[14285]: qm_status:    8373. N  address=0x7fc21369f3e0 frag=0x7fc21369f3b0 size=24 used=1
Aug 25 15:23:55 sip1stage /usr/sbin/kamailio[14285]: qm_status:           alloc'd from tm: t_fwd.c: prepare_new_uac(589)
Aug 25 15:23:55 sip1stage /usr/sbin/kamailio[14285]: qm_status:          start check=f0f0f0f0, end check= c0c0c0c0, abcdefed

When the call is initiated, two of these lines appear in the log:
Aug 25 15:23:40 sip1stage /usr/sbin/kamailio[14286]: <core> [mem/q_malloc.c:369]: qm_malloc(): qm_malloc(0x7fc2132db000, 21) called from tm: t_fwd.c: prepare_new_uac(574)
Aug 25 15:23:40 sip1stage /usr/sbin/kamailio[14286]: <core> [mem/q_malloc.c:415]: qm_malloc(): qm_malloc(0x7fc2132db000, 24) returns address 0x7fc21369f348 frag. 0x7fc21369f318 (size=56) on 1 -th hit
Aug 25 15:23:40 sip1stage /usr/sbin/kamailio[14286]: <core> [mem/q_malloc.c:369]: qm_malloc(): qm_malloc(0x7fc2132db000, 20) called from tm: t_fwd.c: prepare_new_uac(589)
Aug 25 15:23:40 sip1stage /usr/sbin/kamailio[14286]: <core> [mem/q_malloc.c:415]: qm_malloc(): qm_malloc(0x7fc2132db000, 24) returns address 0x7fc21369f3e0 frag. 0x7fc21369f3b0 (size=24) on 1 -th hit


More information can be found at the following URL:
http://sip-router.org/tracker/index.php?do=details&task_id=464

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