[SR-Users] q_malloc crash on Kamailio 5.2.3 with http_async_query function

[Michal Škuta]

Hello everyone,
I am adding some new features to our Kamailio server, one of them is
sending HTTP POST request after calls end. We created simple route like
this and we are calling it from event_route[dialog_end]:

route[HTTP_TEST_CALL_END] {

t_newtran();
$http_req(body) = "TEST";
http_async_query("http://192.168.6.23:2080/cdr_http", "HTTP_TEST_REPLY");
}

Problem is that Kamailio is crashing on line *http_async_query*, the
log from crash:
Oct  3 16:13:37 sip_server /opt/ipgate/kamailio/sbin/kamailio[5331]:
CRITICAL: <core> [core/mem/q_malloc.c:149]: qm_debug_check_frag():
BUG: qm: prev. fragm. tail overwritten(c0003032,
abcdefed)[0x97a7ff3c:0x97a7ff58]! Memory allocator was called from
http_async_client: hm_hash.c:82. Fragment marked by http_async_client:
hm_hash.c:71. Exec from core/mem/q_malloc.c:384.

In older Kamailio 4.4 I am using http_async_query with no problems. I
opened issue on GitHub:
https://github.com/kamailio/kamailio/issues/2091 I hope that is ok,
more logs and core dump is in the issue.

Any help or suggestion is welcomed.

Sincerely Michal
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