### Description Kamailio fails to start after recent changes were made to improve support for OpenSSL 3.X. The failure occurs for both OpenSSL 3.X and OpenSSL 1.1.X, and are the same as failures I had been seeing on previous Kamailio versions when using OpenSSL 3.X. These errors were not occurring for OpenSSL 1.1.X prior to commits on Jan 4, 2024. My configuration is using the unixodbc module to communicate with a Microsoft SQL Server database. Furthermore, the dispatcher module is configured to use the database. With this configuration, Kamailio always fails at startup. It may log a "freeing already free pointer bug" or sometimes indicates pointer corruption. In either case, it fails to connect to the database. #### Reproduction Start Kamailio with configuration files similar to the following. For the log file shown below, Kamailio was started with "kamailio -dd -E --atexit=no" [kamailio.txt](https://github.com/kamailio/kamailio/files/14068346/kamailio.… [tls.txt](https://github.com/kamailio/kamailio/files/14068347/tls.txt) #### Log Messages [kamailio.log](https://github.com/kamailio/kamailio/files/14068278/kamailio.… #### SIP Traffic None. Problem occurs during initialization. ### Additional Information * **Kamailio Version** - output of `kamailio -v` version: kamailio 5.8.0-dev2 (x86_64/linux) 4db5d7-dirty 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: 4db5d7 -dirty compiled on 17:44:29 Jan 26 2024 with gcc 9.4.0 * **Operating System**: Distributor ID: Ubuntu Description: Ubuntu 20.04.6 LTS Release: 20.04 Codename: focal Kernel: 5.4.0-170-generic (Similar behavior is seen on Ubuntu 22.04 using OpenSSL 3.X.) -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/3727 You are receiving this because you are subscribed to this thread. Message ID: <kamailio/kamailio/issues/3727(a)github.com>