mem_join_free flag in kamailio 5.6 deb - sr-users

20 Feb 2024

Hello!

I have an issue with kamailio 5.6.5 after some time of flying there are
errors in logs:

<core> [core/mem/q_malloc.c:297]: qm_find_free():
...
  qm_find_free(0x7fc79c286010, 536); Free fragment not
found! 

mem_join=1 by default, but it seems that MEM_JOIN_FREE flag is not defined
in this build

kamailio -I
...
  Print out of kamailio internals
   Version: kamailio 5.6.5 (x86_64/linux)
   Default config: /etc/kamailio/kamailio.cfg
   Default paths to modules: /usr/lib/x86_64-linux-gnu/kamailio/modules
   Compile 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
   MAX_RECV_BUFFER_SIZE=262144
   MAX_URI_SIZE=1024
   BUF_SIZE=65535
   DEFAULT PKG_SIZE=8MB
   DEFAULT SHM_SIZE=64MB
   ADAPTIVE_WAIT_LOOPS=1024
   TCP poll methods: poll, epoll_lt, epoll_et, sigio_rt, select
   Source code revision ID: unknown
   Compiled with: gcc 10.2.1
   Compiled architecture: x86_64
   Compiled on:
 OS Debian 11 bullseye 

However I noticed the flag exists in 5.7 installed from deb

Print out of kamailio internals
...
    Version: kamailio 5.7.4 (x86_64/linux)
   Default config: /etc/kamailio/kamailio.cfg
   Default paths to modules: /usr/lib/x86_64-linux-gnu/kamailio/modules
   Compile 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
   MAX_RECV_BUFFER_SIZE=262144
   MAX_URI_SIZE=1024
   BUF_SIZE=65535
   DEFAULT PKG_SIZE=8MB
   DEFAULT SHM_SIZE=64MB
   ADAPTIVE_WAIT_LOOPS=1024
   TCP poll methods: poll, epoll_lt, epoll_et, sigio_rt, select
   Source code revision ID: unknown
   Compiled with: gcc 10.2.1
   Compiled architecture: x86_64
   Compiled on: 
OS Debian 11 bullseye

and now, what got me bit confused is that when I build 5.6.5 from source
"make printcdefs" gives me this flag, alongside with other flags which I do
not see later in "kamailio -v" output.

So I am not sure whether this flag was defined during 5.6.5 deb build time
or it has been somehow lost?
So I need your advice.

Regards,
Arsen