Hello!

Currently testing Kamailio on Almalinux 8 (stated to be RHEL 8 binary compatible) and got this while trying to get TLS working:

/usr/sbin/kamailio[32858]: INFO: tls [tls_domain.c:347]: ksr_tls_fill_missing(): TLSc<default>: ca_list='(null)'
/usr/sbin/kamailio[32858]: INFO: tls [tls_domain.c:354]: ksr_tls_fill_missing(): TLSc<default>: ca_path='(null)'
/usr/sbin/kamailio[32858]: INFO: tls [tls_domain.c:361]: ksr_tls_fill_missing(): TLSc<default>: crl='(null)'
/usr/sbin/kamailio[32858]: INFO: tls [tls_domain.c:365]: ksr_tls_fill_missing(): TLSc<default>: require_certificate=1
/usr/sbin/kamailio[32858]: INFO: tls [tls_domain.c:372]: ksr_tls_fill_missing(): TLSc<default>: cipher_list='(null)'
/usr/sbin/kamailio[32858]: INFO: tls [tls_domain.c:379]: ksr_tls_fill_missing(): TLSc<default>: private_key='(null)'
/usr/sbin/kamailio[32858]: INFO: tls [tls_domain.c:383]: ksr_tls_fill_missing(): TLSc<default>: verify_certificate=1
/usr/sbin/kamailio[32858]: INFO: tls [tls_domain.c:386]: ksr_tls_fill_missing(): TLSc<default>: verify_depth=9
/usr/sbin/kamailio[32858]: INFO: tls [tls_domain.c:389]: ksr_tls_fill_missing(): TLSc<default>: verify_client=0
/usr/sbin/kamailio[32858]: INFO: tls [tls_domain.c:736]: set_verification(): TLSc<default>: Server MUST present valid certificate
/usr/sbin/kamailio[32862]: ERROR: rtpengine [rtpengine.c:3070]: send_rtpp_command(): can't send command "ping" to RTPEngine <udp:127.0.0.1:19999>
/usr/sbin/kamailio[32862]: ERROR: rtpengine [rtpengine.c:2919]: rtpp_test(): proxy did not respond to ping
/usr/sbin/kamailio[32883]: INFO: snmpstats [snmpstats.c:519]: spawn_sysUpTime_child(): A snmpVersion parameter was not provided. Defaulting to 3
/usr/sbin/kamailio[32883]: ERROR: snmpstats [snmpstats.c:561]: spawn_sysUpTime_child(): snmpget failed to run. Did you supply the snmpstats module with a proper snmpgetPath parameter? The kamailioSIPServiceStartTime is defaulting to zero
/usr/sbin/kamailio[32881]: INFO: ctl [io_listener.c:214]: io_listen_loop(): io_listen_loop: using epoll_lt io watch method (config)
/usr/sbin/kamailio[32870]: CRITICAL: <core> [core/mem/q_malloc.c:145]: qm_debug_check_frag(): BUG: qm: prev. fragm. tail overwritten(0, abcdefed)[0x7fe8375d3820:0x7fe8375d3858]! Memory allocator was called from tls: tls_init.c:293. Fragment marked by tls: tls_init.c:293. Exec from core/mem/q_malloc.c:391.
/usr/sbin/kamailio[32870]: CRITICAL: <core> [core/mem/q_malloc.c:153]: qm_debug_check_frag(): BUG: qm: prev. fragm. tail overwritten [0x7fe8375d3790:0x7fe8375d37c8] - fragment marked by tls: tls_init.c:293
systemd[1]: Started Process Core Dump (PID 32923/UID 0).
systemd-coredump[32924]: Process 32870 (kamailio) of user 0 dumped core.#012#012Stack trace of thread 32870:#012#0 0x00007fe841786aff raise (libc.so.6)#012#1 0x00007fe841759ea5 abort (libc.so.6)#012#2 0x00000000006eec2f qm_debug_check_frag (kamailio)#012#3 0x00000000006f09a6 qm_malloc (kamailio)#012#4 0x00000000006fc930 qm_shm_malloc (kamailio)#012#5 0x00007fe83b5b9c31 ser_malloc (tls.so)#012#6 0x00007fe83fa4090d CRYPTO_zalloc (libcrypto.so.1.1)#012#7 0x00007fe8364b8163 sc_hash_type (libnetsnmp.so.35)#012#8 0x00007fe8364b49df hash_engineID (libnetsnmp.so.35)#012#9 0x00007fe8364b4b11 search_enginetime_list (libnetsnmp.so.35)#012#10 0x00007fe8364b4f8e set_enginetime (libnetsnmp.so.35)#012#11 0x00007fe8364b4885 init_snmpv3_post_config (libnetsnmp.so.35)#012#12 0x00007fe8364b9c92 snmp_call_callbacks (libnetsnmp.so.35)#012#13 0x00007fe836f3601b register_with_master_agent (snmpstats.so)#012#14 0x00007fe836f37f14 run_alarm_check (snmpstats.so)#012#15 0x0000000000531cde compat_old_handler (kamailio)#012#16 0x000000000053284e slow_timer_main (kamailio)#012#17 0x000000000042e3e1 main_loop (kamailio)#012#18 0x0000000000438d14 main (kamailio)#012#19 0x00007fe841772d85 __libc_start_main (libc.so.6)#012#20 0x000000000041cfce _start (kamailio)
/usr/sbin/kamailio[32915]: CRITICAL: <core> [core/pass_fd.c:277]: receive_fd(): EOF on 24
/usr/sbin/kamailio[32858]: ALERT: <core> [main.c:774]: handle_sigs(): child process 32870 exited by a signal 6

...

version: kamailio 5.6.3 (x86_64/linux) fe0c4d
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: fe0c4d
compiled on 11:02:26 Jan 19 2023 with gcc 8.5.0

Same config is starting without issues on CentOS 7.

OpenSSL version is 1.1.1k

Kamailio is installed from official RPM repos.

Is core dump would be useful here or best to compile from source and redo?

Best regards,

Ihor (Igor)