Dear all, I setup a Kamailio 5.5.0 (from GIT) on a ubuntu Ubuntu 18.04.5 LTS and I have some error with the libssl/ libmysql, seems not happening every time. Regarding the config file, it's a config running correctly on a Kamailio 5.3.x on a centos 7 I have attached the returned error and the result of the core file. Any idea ? BR Laurent version: kamailio 5.5.0 (x86_64/linux) 66370c 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: 66370c compiled on 07:23:15 Jun 11 2021 with gcc 7.5.0 Jun 11 21:35:45 zrh02-srv03 kamailio[7129]: loading modules under config path: /usr/local/lib64/kamailio/modules/ Jun 11 21:35:45 zrh02-srv03 kamailio[7129]: Listening on Jun 11 21:35:45 zrh02-srv03 kamailio[7129]: udp: 80.132.9.112:5060 Jun 11 21:35:45 zrh02-srv03 kamailio[7129]: udp: 80.132.9.112:6000 Jun 11 21:35:45 zrh02-srv03 kamailio[7129]: tcp: 80.132.9.112:5060 Jun 11 21:35:45 zrh02-srv03 kamailio[7129]: tcp: 80.132.9.112:6000 Jun 11 21:35:45 zrh02-srv03 kamailio[7129]: tls: 80.132.9.112:5061 Jun 11 21:35:45 zrh02-srv03 kamailio[7129]: Aliases: Jun 11 21:35:45 zrh02-srv03 kamailio[7129]: tls: zrh02-srv03:5061 Jun 11 21:35:45 zrh02-srv03 kamailio[7129]: tcp: zrh02-srv03:6000 Jun 11 21:35:45 zrh02-srv03 kamailio[7129]: tcp: zrh02-srv03:5060 Jun 11 21:35:45 zrh02-srv03 kamailio[7129]: udp: zrh02-srv03:6000 Jun 11 21:35:45 zrh02-srv03 kamailio[7129]: udp: zrh02-srv03:5060 Jun 11 21:35:45 zrh02-srv03 kamailio[7129]: *: sipbkp.demo.ch:* Jun 11 21:35:45 zrh02-srv03 /usr/local/sbin/kamailio[7135]: WARNING: tls [tls_init.c:793]: tls_h_mod_init_f(): openssl bug #1491 (crash/mem leaks on low memory) workaround enabled (on low memory tls operations will fail preemptively) with free memory thresholds 13107200 and 6553600 bytes Jun 11 21:35:45 zrh02-srv03 /usr/local/sbin/kamailio[7135]: NOTICE: tls [tls_domain.c:1136]: ksr_tls_fix_domain(): registered server_name callback handler for socket [:0], server_name='<default>' ... Jun 11 21:35:46 zrh02-srv03 kernel: [304361.950608] traps: kamailio[7147] general protection ip:7f5d209a344b sp:7ffe6ae5adb8 error:0 in libcrypto.so.1.1[7f5d207b5000+29b000] Jun 11 21:35:46 zrh02-srv03 systemd[1]: Started Kamailio SIP Server. Jun 11 21:35:54 zrh02-srv03 /usr/local/sbin/kamailio[7161]: CRITICAL: <core> [core/pass_fd.c:277]: receive_fd(): EOF on 26 Jun 11 21:35:54 zrh02-srv03 /usr/local/sbin/kamailio[7135]: ALERT: <core> [main.c:788]: handle_sigs(): child process 7147 exited by a signal 11 Jun 11 21:35:54 zrh02-srv03 /usr/local/sbin/kamailio[7135]: ALERT: <core> [main.c:791]: handle_sigs(): core was generated Jun 11 21:35:54 zrh02-srv03 systemd[1]: kamailio.service: Main process exited, code=exited, status=1/FAILURE Jun 11 21:35:54 zrh02-srv03 systemd[1]: kamailio.service: Failed with result 'exit-code'. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: http://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/local/sbin/kamailio...done. [New LWP 7147] [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/local/sbin/kamailio -m 5000 -M 128 -P /run/kamailio/kamailio.pid -f /confi'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f5d209a344b in X509_LOOKUP_by_subject () from /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1 (gdb) bt #0 0x00007f5d209a344b in X509_LOOKUP_by_subject () from /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1 #1 0x00007f5d209a3a5b in X509_STORE_CTX_get_by_subject () from /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1 #2 0x00007f5d209a418d in X509_STORE_CTX_get1_issuer () from /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1 #3 0x00007f5d209a9207 in ?? () from /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1 #4 0x00007f5d209a9f96 in X509_verify_cert () from /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1 #5 0x00007f5d20caf337 in ?? () from /usr/lib/x86_64-linux-gnu/libssl.so.1.1 #6 0x00007f5d20cd037b in ?? () from /usr/lib/x86_64-linux-gnu/libssl.so.1.1 #7 0x00007f5d20cd2995 in ?? () from /usr/lib/x86_64-linux-gnu/libssl.so.1.1 #8 0x00007f5d20ccc48c in ?? () from /usr/lib/x86_64-linux-gnu/libssl.so.1.1 #9 0x00007f5d20cb84e4 in SSL_do_handshake () from /usr/lib/x86_64-linux-gnu/libssl.so.1.1 #10 0x00007f5d215cbdb1 in ?? () from /usr/lib/x86_64-linux-gnu/libmysqlclient.so.20 #11 0x00007f5d2159f4de in mysql_real_connect () from /usr/lib/x86_64-linux-gnu/libmysqlclient.so.20 #12 0x00007f5d21b410b1 in db_mysql_new_connection (id=0x7f5d21ee2b30) at km_my_con.c:157 #13 0x00007f5d211456dc in db_do_init2 (url=0x7f5d1e9dd4e0 <ul_db_url>, new_connection=0x7f5d21b3f6a4 <db_mysql_new_connection>, pooling=DB_POOLING_PERMITTED) at db.c:317 #14 0x00007f5d211443f9 in db_do_init (url=0x7f5d1e9dd4e0 <ul_db_url>, new_connection=0x7f5d21b3f6a4 <db_mysql_new_connection>) at db.c:270 #15 0x00007f5d21b3459e in db_mysql_init (_url=0x7f5d1e9dd4e0 <ul_db_url>) at km_dbase.c:202 #16 0x00007f5d1e7a1987 in child_init (_rank=-1) at usrloc_mod.c:471 #17 0x000055ddd6c45602 in init_mod_child (m=0x7f5d21e03818, rank=-1) at core/sr_module.c:864 #18 0x000055ddd6c4521d in init_mod_child (m=0x7f5d21e03bb8, rank=-1) at core/sr_module.c:860 #19 0x000055ddd6c4521d in init_mod_child (m=0x7f5d21e04498, rank=-1) at core/sr_module.c:860 #20 0x000055ddd6c4521d in init_mod_child (m=0x7f5d21e056a8, rank=-1) at core/sr_module.c:860 #21 0x000055ddd6c4521d in init_mod_child (m=0x7f5d21e06390, rank=-1) at core/sr_module.c:860 #22 0x000055ddd6c4521d in init_mod_child (m=0x7f5d21e06b38, rank=-1) at core/sr_module.c:860 #23 0x000055ddd6c4521d in init_mod_child (m=0x7f5d21e06fb8, rank=-1) at core/sr_module.c:860 #24 0x000055ddd6c4521d in init_mod_child (m=0x7f5d21e075f0, rank=-1) at core/sr_module.c:860 #25 0x000055ddd6c4521d in init_mod_child (m=0x7f5d21e090c0, rank=-1) at core/sr_module.c:860 #26 0x000055ddd6c4521d in init_mod_child (m=0x7f5d21e09500, rank=-1) at core/sr_module.c:860 #27 0x000055ddd6c4521d in init_mod_child (m=0x7f5d21e0a400, rank=-1) at core/sr_module.c:860 #28 0x000055ddd6c4521d in init_mod_child (m=0x7f5d21e0aa70, rank=-1) at core/sr_module.c:860 #29 0x000055ddd6c4521d in init_mod_child (m=0x7f5d21e0b0b0, rank=-1) at core/sr_module.c:860 #30 0x000055ddd6c4521d in init_mod_child (m=0x7f5d21e0b5d8, rank=-1) at core/sr_module.c:860 #31 0x000055ddd6c4521d in init_mod_child (m=0x7f5d21e0bdd0, rank=-1) at core/sr_module.c:860 #32 0x000055ddd6c4521d in init_mod_child (m=0x7f5d21e0c968, rank=-1) at core/sr_module.c:860 #33 0x000055ddd6c4521d in init_mod_child (m=0x7f5d21e0f7f8, rank=-1) at core/sr_module.c:860 #34 0x000055ddd6c4521d in init_mod_child (m=0x7f5d21e105d8, rank=-1) at core/sr_module.c:860 #35 0x000055ddd6c4521d in init_mod_child (m=0x7f5d21e109b0, rank=-1) at core/sr_module.c:860 #36 0x000055ddd6c4521d in init_mod_child (m=0x7f5d21e10ea0, rank=-1) at core/sr_module.c:860 #37 0x000055ddd6c45ef9 in init_child (rank=-1) at core/sr_module.c:909 #38 0x000055ddd6b9eebe in fork_process (child_id=-1, desc=0x55ddd6ee7847 "slow timer", make_sock=1) at core/pt.c:337 #39 0x000055ddd6abaa62 in main_loop () at main.c:1814 #40 0x000055ddd6ac6095 in main (argc=9, argv=0x7ffe6ae5d298) at main.c:3053