I'm having the same issue after upgrading our kamailio to 5.4.1
``` [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.lb.pid -f /etc/kamailio/lb/kamaili'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f00fe4aee26 in ?? () from /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1 (gdb) bt #0 0x00007f00fe4aee26 in ?? () from /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1 #1 0x00007f00fe4af12f in OPENSSL_cleanup () from /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1 #2 0x00007f010235ed8c in ?? () from /lib/x86_64-linux-gnu/libc.so.6 #3 0x00007f010235eeba in exit () from /lib/x86_64-linux-gnu/libc.so.6 #4 0x000055cfea78a745 in handle_sigs () at main.c:810 #5 0x000055cfea790525 in main_loop () at main.c:1817 #6 0x000055cfea78591b in main (argc=<optimized out>, argv=<optimized out>) at main.c:2856 ```