### Description
kamailio crash with signal 6
### Troubleshooting
#### Reproduction
After each couple of dispatcher ping interval.
#### Debugging Data
No core dump file.
#### Log Messages
Dec 6 17:47:24 frnappcoe3router2 /usr/sbin/kamailio[1618]: INFO: ctl
[io_listener.c:211]: io_listen_loop(): using epoll_lt as the io watch method
(auto detected)
Dec 6 17:47:34 frnappcoe3router2 /usr/sbin/kamailio[1614]: NOTICE: <script>:
tm:local-request called OPTIONS to
<sip:frnappcoe3sfl05.orange-voicemail.net:5060>
Dec 6 17:47:34 frnappcoe3router2 /usr/sbin/kamailio[1614]: NOTICE: <script>:
tm:local-request called OPTIONS to <sip:cs1-tool-misc.orange-voicemail.net:5060>
Dec 6 17:47:44 frnappcoe3router2 /usr/sbin/kamailio[1614]: NOTICE: <script>:
tm:local-request called OPTIONS to
<sip:frnappcoe3sfl05.orange-voicemail.net:5060>
Dec 6 17:47:44 frnappcoe3router2 /usr/sbin/kamailio[1614]: NOTICE: <script>:
tm:local-request called OPTIONS to <sip:cs1-tool-misc.orange-voicemail.net:5060>
Dec 6 17:47:44 frnappcoe3router2 /usr/sbin/kamailio[1608]: CRITICAL: <core>
[core/mem/q_malloc.c:555]: qm_free(): BUG: freeing already freed pointer
(0x7f178fa8a700), called from core: core/xavp.c: xavp_free(81), first free
core: core/xavp.c: xavp_new_value(117) - ignoring
Dec 6 17:47:44 frnappcoe3router2 /usr/sbin/kamailio[1608]: CRITICAL: <core>
[core/mem/q_malloc.c:136]: qm_debug_check_frag(): BUG: qm: fragm.
0x7f178fa8a560 (address 0x7f178fa8a5a0) end overwritten (0, f00000000000)!
Memory allocator was called from core: core/xavp.c:81. Fragment marked by
(null):2882400237. Exec from core/mem/q_malloc.c:546.
Dec 6 17:47:44 frnappcoe3router2 /usr/sbin/kamailio[1604]: ALERT: <core>
[main.c:805]: handle_sigs(): child process 1608 exited by a signal 6
Dec 6 17:47:44 frnappcoe3router2 /usr/sbin/kamailio[1604]: ALERT: <core>
[main.c:809]: handle_sigs(): core was not generated
Dec 6 17:47:44 frnappcoe3router2 /usr/sbin/kamailio[1604]: INFO: <core>
[main.c:832]: handle_sigs(): terminating due to SIGCHLD
#### SIP Traffic
### Possible Solutions
### Additional Information
[root@frnappcoe3router2 ~]# kamailio -v
version: kamailio 5.8.4 (x86_64/linux) f1d83d
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_SEND_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: f1d83d
compiled on 13:59:57 Nov 12 2024 with gcc 8.5.0
kamailio.cfg
loadmodule "dispatcher.so"
modparam("dispatcher", "list_file", DISPATCHER_FILE)
modparam("dispatcher", "ds_probing_mode", 1)
modparam("dispatcher", "ds_probing_threshold",3)
modparam("dispatcher", "flags", 3)
modparam("dispatcher", "ds_ping_from", "sip:siprou...@unisys.com")
modparam("dispatcher", "xavp_dst", "_dsdst_")
modparam("dispatcher", "xavp_ctx", "_dsctx_")
modparam("dispatcher", "ds_hash_size", 8)
modparam("dispatcher", "ds_ping_interval", 10)
modparam("dispatcher", "ds_ping_reply_codes", "class=2;class=3")
* **Operating System**:
RHEL8.8
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