Description

We have a cluster of two Kamailio nodes on Debian 10 + v5.5.2.

We have added a node and updated to v5.6.1. So now it's a cluster of:

2x debian10 + v5.6.1
1x debian11 + v5.6.1

Troubleshooting

I'm not sure what is the issue but per dmesg logs it seems related to dmq_usrloc module. We have a lot of cores, so it's happening constantly since the upgrade and the extra node addition.

Debugging Data

core.kamailio.53605.1663462643.txt

Log Messages

[155017.987497] kamailio[53605]: segfault at f8 ip 00007fd49cf02f72 sp 00007ffea6e37e70 error 4 in dmq_usrloc.so[7fd49cef0000+17000]
[155017.987527] Code: 40 38 01 d0 89 05 12 95 00 00 48 8b 05 cf 8f 00 00 8b 00 83 f8 01 0f 85 80 00 00 00 48 8b 85 48 ff ff ff 48 8b 80 a0 00 00 00 <8b> 90 f8 00 00 00 48 8b 85 48 ff ff ff 48 8b 80 a0 00 00 00 48 8b

SIP Traffic

(paste your sip traffic here)

Possible Solutions

Additional Information

Kamailio Version - output of kamailio -v

version: kamailio 5.6.1 (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, 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 10.2.1

Operating System:

No LSB modules are available.
Distributor ID:	Debian
Description:	Debian GNU/Linux 11 (bullseye)
Release:	11
Codename:	bullseye

Linux sip03.example.com 5.18.0-0.deb11.4-amd64 #1 SMP PREEMPT_DYNAMIC Debian 5.18.16-1~bpo11+1 (2022-08-12) x86_64 GNU/Linux

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