[sr-dev] [kamailio/kamailio] Warnings emitted when calling functions from dialplan module (Issue #3851)

### Description Calling functions from the `dialplan` module in 5.8 (`dp_translate()`, `dp_match()`) results in the following line being logged: ``` WARNING: <core> [core/mem/q_malloc.c:520]: qm_free(): WARNING: free(0) called from dialplan: dp_db.c: pcre2_free(206) ``` Is this a functional problem, or just a case of overly aggressive logging? ### Troubleshooting #### Reproduction Reproducible with the following kamailio config: ``` #!KAMAILIO loadmodule "pv" loadmodule "db_sqlite" loadmodule "xlog" loadmodule "dialplan" disable_tcp = true force_rport = true !!define DBFILE /etc/kamailio/kamailio.sqlite modparamx("db_sqlite","db_set_readonly", "$def(DBFILE)") modparamx("dialplan","db_url", "sqlite:///$def(DBFILE)") modparam("dialplan", "attrs_pvar", "$avp(dp_attrs)") request_route { if ( $rm == "ACK" ) { exit; } xinfo("$ci New request\n"); dp_match("1", "$rU"); exit; } ``` The warning log is issued in 5.8 but not 5.7. Reproduced by sending a request with SIPp: ``` sipp -sn uac -m 1 -s 15554445555 localhost ``` ### Possible Solutions Not sure if this is just a case of logging being overly aggressive, or an issue with the module's memory management. ### Additional Information * **Kamailio Version** - output of `kamailio -v` ``` version: kamailio 5.8.1 (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, 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: unknown compiled with gcc 12.2.0 ``` Tested using docker `debian:12-slim` using the official packages from `http://deb.kamailio.org/kamailio58` * **Operating System**: Docker debian:12-slim, but also observed in Alpine Linux/ -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/3851 You are receiving this because you are subscribed to this thread. Message ID: &lt;kamailio/kamailio/issues/3851(a)github.com&gt;