29 Jun
2023
29 Jun
'23
1:59 p.m.
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### Description
<!--
Explain what you did, what you expected to happen, and what actually happened.
-->
I am currenlty trying to configure Kamailio to send via HTTP a JSON message to a webserver
about an incoming call.
Unfortunatly Kamailio crashes in the process shortly after the build of the JSON message.
This is happening every second and third call. I am getting the following error message,
when Kamailio is about to crash:
```
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2927]: ERROR: {1 1 INVITE
bd067878791fbae2f1490dc7a48915c8(a)0.0.0.0}jansson [jansson_funcs.c:228]: janssonmod_set():
unrecognized input type
```
I tested this on three VMs with the same behaviour:
- VM with Debian 11 and Kamailio 5.6.
- VM with Debian 11 and Kamailio 5.7.
- VM with Debian 12 and Kamailio 5.7.
### Troubleshooting
#### Reproduction
<!--
If the issue can be reproduced, describe how it can be done.
-->
When I set something like this in the kamailio.cfg, every second or third incoming calls
are causing a crash and Kamailio restarts.
```
/* Build the JSON formatted HTTP Requests */
jansson_set("object", "Call",
'{"CallType":"$var(CallType)"}',
"$var(http_routing_query)");
jansson_set("string", "Call.DeviceId", $var(CallDeviceId),
"$var(http_routing_query)");
```
Without the `jansson_set()` I can generate more than 100 concurrent calls without a
problem.
#### Debugging Data
<!--
If you got a core dump, use gdb to extract troubleshooting data - full backtrace,
local variables and the list of the code at the issue location.
gdb /path/to/kamailio /path/to/corefile
bt full
info locals
list
If you are familiar with gdb, feel free to attach more of what you consider to
be relevant.
-->
```gdb /usr/sbin/kamailio /home/ladmin/core
GNU gdb (Debian 13.1-3) 13.1
Copyright (C) 2023 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/sbin/kamailio...
Reading symbols from
/usr/lib/debug/.build-id/d7/49ff00b62a1c787a944d88d8b8292aca08ca1d.debug...
warning: Can't open file /dev/zero (deleted) during file-backed mapping note
processing
[New LWP 5716]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/sbin/kamailio -P /run/kamailio/kamailio.pid -f
/etc/kamailio/kamailio.cfg'.
Program terminated with signal SIGABRT, Aborted.
#0 __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6,
no_tid=no_tid@entry=0) at ./nptl/pthread_kill.c:44
44 ./nptl/pthread_kill.c: Datei oder Verzeichnis nicht gefunden.
(gdb) bt full
#0 __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6,
no_tid=no_tid@entry=0) at ./nptl/pthread_kill.c:44
tid = <optimized out>
ret = 0
pd = <optimized out>
old_mask = {__val = {5641075408187236401}}
ret = <optimized out>
#1 0x00007f819c00ad2f in __pthread_kill_internal (signo=6, threadid=<optimized
out>) at ./nptl/pthread_kill.c:78
No locals.
#2 0x00007f819bfbbef2 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26
ret = <optimized out>
#3 0x00007f819bfa6472 in __GI_abort () at ./stdlib/abort.c:79
save_stage = 1
act = {__sigaction_handler = {sa_handler = 0x20, sa_sigaction = 0x20}, sa_mask =
{__val = {58, 0, 0, 140194624712704, 140194624715856, 140194624715856, 0, 93892812469232,
140721354859776, 1, 140194638635552, 140721354859776,
93892811155638, 93892812454032, 93892812120108, 140194638259824}}, sa_flags
= 532412408, sa_restorer = 0x55651fbc7538 <__func__.1>}
#4 0x000055651f821c80 in qm_free (qmp=<optimized out>, p=<optimized out>,
file=<optimized out>, func=<optimized out>, line=<optimized out>,
mname=<optimized out>) at core/mem/q_malloc.c:499
qm = <optimized out>
f = <optimized out>
size = <optimized out>
next = <optimized out>
prev = <optimized out>
__func__ = "qm_free"
#5 0x000055651faa72d3 in free_to_params (tb=0x7f819b99fea0) at
core/parser/parse_addr_spec.c:918
tp = <optimized out>
foo = 0x7f819b9ed9f0
tp = <optimized out>
foo = <optimized out>
__func__ = "free_to_params"
#6 free_to (tb=0x7f819b99fea0) at core/parser/parse_addr_spec.c:927
__func__ = "free_to"
#7 0x000055651fa901b7 in free_hdr_field_lst (hf=0x7f819b80d8f0) at core/parser/hf.c:216
foo = 0x7f819b80df18
__func__ = "free_hdr_field_lst"
#8 0x000055651fa975c6 in free_sip_msg (msg=msg@entry=0x7f819ba2a220) at
core/parser/msg_parser.c:776
No locals.
#9 0x000055651f950d3d in receive_msg (buf=<optimized out>, len=<optimized
out>, len@entry=1164, rcv_info=rcv_info@entry=0x7f81964f36a0) at core/receive.c:629
msg = 0x7f819ba2a220
ctx = {rec_lev = 2, run_flags = 0, last_retcode = 532062212, jmp_env = {{__jmpbuf
= {140194549282440, 93892810816032, 0, 0, 0, 0, 0, 0}, __mask_was_saved = 0, __saved_mask
= {__val = {0, 0, 0, 0, 0, 0, 140194644852349, 0,
5895253961443638784, 4095, 140194549283376, 140194549282440,
140721354861248, 2, 93892812120068, 4294967295}}}}}
bctx = <optimized out>
ret = <optimized out>
tvb = {tv_sec = 0, tv_usec = 0}
tve = {tv_sec = 0, tv_usec = 0}
diff = <optimized out>
inb = {
s = 0x5565204be320 "INVITE sip:+987654321@test-sbc-01.example.com:5060
SIP/2.0\r\nVia: SIP/2.0/TCP
192.168.80.6:5060;branch=z9hG4bK63d05bc5;rport\r\nMax-Forwards: 69\r\nFrom:
\"+123456789\" <sip:+123456789@192.168.80.6>;tag=as4929383"..., len =
1164}
netinfo = {data = {s = 0x0, len = 0}, bufsize = 0, rcv = 0x0, dst = 0x0}
keng = <optimized out>
evp = {data = 0x7ffc3e5e6640, obuf = {s = 0x0, len = 0}, rcv = 0x7f81964f36a0, dst
= 0x0, req = 0x0, rpl = 0x0, rplcode = 0, mode = 0}
cidlockidx = <optimized out>
cidlockset = <optimized out>
errsipmsg = <optimized out>
exectime = <optimized out>
__func__ = "receive_msg"
--Type <RET> for more, q to quit, c to continue without paging--
#10 0x000055651fa30681 in receive_tcp_msg (
tcpbuf=0x7f81964f3a30 "INVITE sip:+987654321@test-sbc-01.example.com:5060
SIP/2.0\r\nVia: SIP/2.0/TCP
192.168.80.6:5060;branch=z9hG4bK63d05bc5;rport\r\nMax-Forwards: 70\r\nFrom:
\"+123456789\" <sip:+123456789@192.168.80.6>;tag=as4929383"...,
len=1164, rcv_info=0x7f81964f36a0, con=con@entry=0x7f81964f3688) at core/tcp_read.c:1413
ret = 0
buf = 0x5565204be320 "INVITE sip:+987654321@test-sbc-01.example.com:5060
SIP/2.0\r\nVia: SIP/2.0/TCP
192.168.80.6:5060;branch=z9hG4bK63d05bc5;rport\r\nMax-Forwards: 69\r\nFrom:
\"+123456789\" <sip:+123456789@192.168.80.6>;tag=as4929383"...
bsize = 65535
blen = 65535
__func__ = "receive_tcp_msg"
#11 0x000055651fa30b31 in tcp_read_req (con=0x7f81964f3688,
bytes_read=bytes_read@entry=0x7ffc3e5e6ab8, read_flags=read_flags@entry=0x7ffc3e5e6ac0) at
core/tcp_read.c:1604
bytes = <optimized out>
total_bytes = 1164
resp = 1
size = <optimized out>
req = 0x7f81964f37b0
dst = {send_sock = 0x55651fb6a004, to = {s = {sa_family = 8728, sa_data =
"\273\037eU\000\000\340i^>\374\177\000"}, sin = {sin_family = 8728, sin_port
= 8123, sin_addr = {s_addr = 21861}, sin_zero = "\340i^>\374\177\000"},
sin6 = {sin6_family = 8728, sin6_port = 8123, sin6_flowinfo = 21861, sin6_addr
= {__in6_u = {__u6_addr8 =
"\340i^>\374\177\000\000\030\000\000\000\000\000\000", __u6_addr16 = {27104,
15966, 32764, 0, 24, 0, 0, 0},
__u6_addr32 = {1046374880, 32764, 24, 0}}}, sin6_scope_id = 0}, sas =
{ss_family = 8728,
__ss_padding = "\273\037eU\000\000\340i^>\374\177\000\000\030",
'\000' <repeats 43 times>, "\001 \000\000@\n\243\233\201\177",
'\000' <repeats 34 times>,
"\310j^>\374\177\000\000\b\000\000\000\000\000\000",
__ss_align = 20}}, id = 1, send_flags = {f = 1, blst_imask = 0}, proto = 10
'\n', proto_pad0 = 0 '\000', proto_pad1 = 0}
c = 0 '\000'
ret = <optimized out>
__func__ = "tcp_read_req"
#12 0x000055651fa346a7 in handle_io (fm=fm@entry=0x7f819ba30a40, events=events@entry=1,
idx=idx@entry=-1) at core/tcp_read.c:1855
ret = 458
n = 1164
read_flags = RD_CONN_SHORT_READ
con = 0x7f81964f3688
s = 10
resp = <optimized out>
t = <optimized out>
ee = 0x0
__func__ = "handle_io"
error = <optimized out>
#13 0x000055651fa3a75d in io_wait_loop_epoll (repeat=repeat@entry=0, t=<optimized
out>, h=<optimized out>) at core/io_wait.h:1070
n = 1
r = 0
fm = 0x7f819ba30a40
revents = 1
__func__ = "io_wait_loop_epoll"
#14 0x000055651fa3af67 in tcp_receive_loop (unix_sock=<optimized out>) at
core/tcp_read.c:1976
__func__ = "tcp_receive_loop"
#15 0x000055651fa245b7 in tcp_init_children (woneinit=woneinit@entry=0x7ffc3e5e6ffc) at
core/tcp_main.c:5239
r = 0
i = <optimized out>
reader_fd_1 = 28
pid = <optimized out>
si_desc = "tcp receiver
(generic)\000\000\001\000\000\000\000\000\000\000\002\000\000\000\000\000\000\000\006\a\235\037eU\000\000\004\240\266\037eU\000\000\2004\273\037eU\000\000\250\022\201\233\201\177\000\000\024",
'\000' <repeats 15 times>,
"\t\240\266\037eU\000\000\210\342\266\037eU\000\0008\005\000\000\000\000\000\000\004\240\266\037eU\000\000\277.\250\037eU\000"
si = <optimized out>
__func__ = "tcp_init_children"
error = <optimized out>
#16 0x000055651f833d13 in main_loop () at ./src/main.c:1851
i = <optimized out>
--Type <RET> for more, q to quit, c to continue without paging--c
pid = <optimized out>
si = <optimized out>
si_desc = "udp receiver child=1
sock=192.168.71.123:5060\000\000\000g\270\267\037eU\000\000\037M\272\037eU\000\000\235d\235d\000\000\000\000,\024\000\234\201\177\000\000\003\000\000\000\000\000\000\000\t\000\000\000\000\000\000\000Thu
Jun \000\376\217X>&\320Q:48 2023\002\000\000\000\000\000\000"
nrprocs = <optimized out>
woneinit = 1
__func__ = "main_loop"
error = <optimized out>
#17 0x000055651f8254dc in main (argc=<optimized out>, argv=<optimized out>) at
./src/main.c:3086
cfg_stream = <optimized out>
c = <optimized out>
r = <optimized out>
tmp = 0x7ffc3e5e8e7a ""
tmp_len = 0
port = 0
proto = -1675315600
ahost = 0x0
aport = 0
options = 0x55651fb6ccf0
":f:cm:M:dVIhEeb:l:L:n:vKrRDTN:W:w:t:u:g:P:G:SQ:O:a:A:x:X:Y:"
ret = -1
seed = 2872567957
rfd = <optimized out>
debug_save = <optimized out>
debug_flag = <optimized out>
dont_fork_cnt = 0
n_lst = <optimized out>
p = <optimized out>
st = {st_dev = 23, st_ino = 1597, st_nlink = 2, st_mode = 16888, st_uid = 111,
st_gid = 120, __pad0 = 0, st_rdev = 0, st_size = 40, st_blksize = 4096, st_blocks = 0,
st_atim = {tv_sec = 1688030808, tv_nsec = 298133358},
st_mtim = {tv_sec = 1688030808, tv_nsec = 298133358}, st_ctim = {tv_sec =
1688030808, tv_nsec = 298133358}, __glibc_reserved = {0, 0, 0}}
tbuf =
"\000\000\000\000\000\000\000\000p\266$\234\201\177\000\000\r\000\000\000\000\000\000\000\230!\025\234\201\177\000\0000v^>\374\177\000\000\370b\306\037eU\000\000
\360'\234\201\177\000\000\256\317%\234\201\177\000\000\001", '\000'
<repeats 15 times>,
"x\330$\234\201\177\000\000\3008&\234\201\177\000\000\000\000\000\000\000\000\000\000Pu^>\374\177\000\000\n",
'\000' <repeats 15 times>,
"0v^>\374\177\000\000\023\361%\234\201\177\000\000\000\000\000\000\000\000\000\000\370b\306\037eU\000\0000v^>\374\177\000\000\000\000\000\000\000\000\000\000\340\002(\234\201\177\000\000\000\000\000\000\000\000\000\000\240\026%\234\201\177\000\000"...
option_index = 12
long_options = {{name = 0x55651fb6b2d3 "help", has_arg = 0, flag = 0x0,
val = 104}, {name = 0x55651fb749ae "version", has_arg = 0, flag = 0x0, val =
118}, {name = 0x55651fb841b2 "alias", has_arg = 1, flag = 0x0, val = 1024}, {
name = 0x55651fb6b2d8 "subst", has_arg = 1, flag = 0x0, val = 1025},
{name = 0x55651fb6b2de "substdef", has_arg = 1, flag = 0x0, val = 1026}, {name =
0x55651fb6b2e7 "substdefs", has_arg = 1, flag = 0x0, val = 1027}, {
name = 0x55651fb6b2f1 "server-id", has_arg = 1, flag = 0x0, val =
1028}, {name = 0x55651fb6b2fb "loadmodule", has_arg = 1, flag = 0x0, val =
1029}, {name = 0x55651fb6b306 "modparam", has_arg = 1, flag = 0x0, val = 1030},
{
name = 0x55651fb6b30f "log-engine", has_arg = 1, flag = 0x0, val =
1031}, {name = 0x55651fb74acb "debug", has_arg = 1, flag = 0x0, val = 1032},
{name = 0x55651fb6b31a "cfg-print", has_arg = 0, flag = 0x0, val = 1033}, {
name = 0x55651fb6b324 "atexit", has_arg = 1, flag = 0x0, val =
1034}, {name = 0x55651fb6b32b "all-errors", has_arg = 0, flag = 0x0, val =
1035}, {name = 0x0, has_arg = 0, flag = 0x0, val = 0}}
__func__ = "main"
(gdb) info locals
tid = <optimized out>
ret = 0
pd = <optimized out>
old_mask = {__val = {5641075408187236401}}
ret = <optimized out>
(gdb) list
39 in ./nptl/pthread_kill.c
```
#### Log Messages
<!--
Check the syslog file and if there are relevant log messages printed by Kamailio, add them
next, or attach to issue, or provide a link to download them (e.g., to a pastebin site).
-->
```
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2927]: INFO: {1 1 INVITE
bd067878791fbae2f1490dc7a48915c8(a)0.0.0.0}<script>pt>: ######################## INVITE
#######################
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2927]: INFO: {1 1 INVITE
bd067878791fbae2f1490dc7a48915c8(a)0.0.0.0}<script>pt>: incoming INVITE from +123456789
to +987654321
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2927]: INFO: {1 1 INVITE
bd067878791fbae2f1490dc7a48915c8(a)0.0.0.0}<script>pt>: Entering Sub Route AUTH
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2927]: INFO: {1 1 INVITE
bd067878791fbae2f1490dc7a48915c8(a)0.0.0.0}<script>pt>: Entering Sub Route REQINIT
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2927]: INFO: {1 1 INVITE
bd067878791fbae2f1490dc7a48915c8(a)0.0.0.0}<script>pt>: Entering Sub Route NATDETECT
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2927]: INFO: {1 1 INVITE
bd067878791fbae2f1490dc7a48915c8(a)0.0.0.0}<script>pt>: Entering Sub Route CANCEL
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2927]: INFO: {1 1 INVITE
bd067878791fbae2f1490dc7a48915c8(a)0.0.0.0}<script>pt>: Entering Sub Route
RETRANSMISSIONS
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2927]: INFO: {1 1 INVITE
bd067878791fbae2f1490dc7a48915c8(a)0.0.0.0}<script>pt>: Entering Sub Route WITHINDLG
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2927]: INFO: {1 1 INVITE
bd067878791fbae2f1490dc7a48915c8(a)0.0.0.0}<script>pt>: Entering Sub Route RECORD_ROUTE
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2927]: INFO: {1 1 INVITE
bd067878791fbae2f1490dc7a48915c8(a)0.0.0.0}<script>pt>: Entering Sub Route DESTINATION
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2927]: INFO: {1 1 INVITE
bd067878791fbae2f1490dc7a48915c8(a)0.0.0.0}<script>pt>: Entering Sub Route
TWILIO_INCOMING
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2927]: INFO: {1 1 INVITE
bd067878791fbae2f1490dc7a48915c8(a)0.0.0.0}<script>pt>: Entering Sub Route AVAYA_OUTGOING
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2927]: INFO: {1 1 INVITE
bd067878791fbae2f1490dc7a48915c8(a)0.0.0.0}<script>pt>: Entering Sub Route
HTTP_NOTIFICATION
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2927]: ERROR: {1 1 INVITE
bd067878791fbae2f1490dc7a48915c8(a)0.0.0.0}jansson [jansson_funcs.c:228]: janssonmod_set():
unrecognized input type
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2927]: INFO: {1 1 INVITE
bd067878791fbae2f1490dc7a48915c8(a)0.0.0.0}<script>pt>: Sending HTTP Request with ID 1234
to http://127.0.0.1:8080/action:
{"Version":1,"MessageType":"Incomi
ngCall","Call":{"CallType":"TestCall","DeviceId":"XXXX","Device":{"Id":"2","Name":"XXX"},"Caller":"sip:+123456789@sip.twilio.com","XXXId":"sip:+123456789@sip.twilio.com","Destination":"sip:+987654321@avaya
.example.com;transport=tcp","ForwardedTo":"sip:+987654321@avaya.example.com","UCID":"0123456789","AvGlobalSessionId":"1234-5678-9123-4567"},"Sender":{"Hostname":"test-sbc-01","Location
":"Test"},"Timestamp":"2023-06-28T16:25:22Z"}
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2927]: INFO: {1 1 INVITE
bd067878791fbae2f1490dc7a48915c8(a)0.0.0.0}<script>pt>: Entering Sub Route RELAY
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2927]: INFO: {1 1 INVITE
bd067878791fbae2f1490dc7a48915c8(a)0.0.0.0}<script>pt>: Entering Branch Route
MANAGE_BRANCH
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2927]: INFO: {1 1 INVITE
bd067878791fbae2f1490dc7a48915c8(a)0.0.0.0}<script>pt>: new branch [0] to
sip:+987654321@avaya.example.com;transport=tcp
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2927]: INFO: {1 1 INVITE
bd067878791fbae2f1490dc7a48915c8(a)0.0.0.0}<script>pt>: Entering Sub Route NATMANAGE
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2927]: INFO: {1 1 INVITE
bd067878791fbae2f1490dc7a48915c8(a)0.0.0.0}<script>pt>: Entering Sub Route RTPENGINE
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2927]: INFO: {1 1 INVITE
bd067878791fbae2f1490dc7a48915c8(a)0.0.0.0}<script>pt>: Managing RTPEngine due to INVITE
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2928]: CRITICAL: <core>
[core/pass_fd.c:277]: receive_fd(): EOF on 8
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2915]: ALERT: <core> [main.c:776]:
handle_sigs(): child process 2927 exited by a signal 11
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2915]: ALERT: <core> [main.c:779]:
handle_sigs(): core was not generated
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2915]: INFO: <core> [main.c:801]:
handle_sigs(): terminating due to SIGCHLD
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2926]: INFO: <core> [main.c:856]:
sig_usr(): signal 15 received
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2922]: INFO: <core> [main.c:856]:
sig_usr(): signal 15 received
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2925]: INFO: <core> [main.c:856]:
sig_usr(): signal 15 received
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2920]: INFO: <core> [main.c:856]:
sig_usr(): signal 15 received
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2921]: INFO: <core> [main.c:856]:
sig_usr(): signal 15 received
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2918]: INFO: <core> [main.c:856]:
sig_usr(): signal 15 received
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2917]: INFO: <core> [main.c:856]:
sig_usr(): signal 15 received
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2919]: INFO: <core> [main.c:856]:
sig_usr(): signal 15 received
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2916]: INFO: <core> [main.c:856]:
sig_usr(): signal 15 received
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2923]: INFO: <core> [main.c:856]:
sig_usr(): signal 15 received
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2928]: INFO: <core> [main.c:856]:
sig_usr(): signal 15 received
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2924]: INFO: <core> [main.c:856]:
sig_usr(): signal 15 received
Jun 28 16:29:48 test-sbc-01 /usr/sbin/kamailio[2915]: INFO: <core>
[core/sctp_core.c:53]: sctp_core_destroy(): SCTP API not initialized
```
### Additional Information
* **Kamailio Version** - output of `kamailio -v`
```
version: kamailio 5.7.1 (x86_64/linux)
flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST,
DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, MEM_JOIN_FREE, Q_MALLOC, F_MALLOC, TLSF_MALLOC,
DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER,
USE_NAPTR, USE_DST_BLOCKLIST, HAVE_RESOLV_RES, TLS_PTHREAD_MUTEX_SHARED
ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_URI_SIZE 1024, BUF_SIZE 65535,
DEFAULT PKG_SIZE 8MB
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
id: unknown
compiled with gcc 12.2.0
```
* **Operating System**:
<!--
Details about the operating system, the type: Linux (e.g.,: Debian 8.4, Ubuntu 16.04,
CentOS 7.1, ...), MacOS, xBSD, Solaris, ...;
Kernel details (output of `lsb_release -a` and `uname -a`)
-->
```
Distributor ID: Debian
Description: Debian GNU/Linux 12 (bookworm)
Release: 12
Codename: bookworm
Linux test-sbc-01 6.1.0-9-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.27-1 (2023-05-08) x86_64
GNU/Linux
```
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