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### Description

<!-- Explain what you did, what you expected to happen, and what actually happened. --> I tested kamailio's topoh+topos modules. udp worker's private memory is leaking when i enable both. after a couple of hour kamailio stops and spams error messages.

### Troubleshooting kamcmd pkg.stats shows lots of real_used memory(only udp workers are leaking).

#### Reproduction Enable both modules. <!-- If the issue can be reproduced, describe how it can be done. -->

#### Debugging Data

<!-- If you got a core dump, use gdb to extract troubleshooting data - full backtrace, local variables and the list of the code at the issue location.

gdb /path/to/kamailio /path/to/corefile bt full info locals list

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#### Log Messages

<!-- Check the syslog file and if there are relevant log messages printed by Kamailio, add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site). -->

``` Oct 18 17:00:55 /usr/sbin/kamailio[20801]: ERROR: <core> [core/receive.c:162]: receive_msg(): no mem for sip_msg Oct 18 17:00:55 /usr/sbin/kamailio[20802]: ERROR: <core> [core/mem/q_malloc.c:291]: qm_find_free(): qm_find_free(0x7fe6f5bee010, 1776); Free fragment not found! Oct 18 17:00:55 /usr/sbin/kamailio[20802]: ERROR: <core> [core/mem/q_malloc.c:425]: qm_malloc(): qm_malloc(0x7fe6f5bee010, 1776) called from core: core/receive.c: receive_msg(160), module: core; Free fragment not found! ```

<!-- If the issue is exposed by processing specific SIP messages, grab them with ngrep or save in a pcap file, then add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site). -->

### Possible Solutions

<!-- If you found a solution or workaround for the issue, describe it. Ideally, provide a pull request with a fix. --> disable one of modules ### Additional Information * **/etc/default/kamailio** ``` SHM_MEMORY=512 PKG_MEMORY=64 ``` Number of children = 8

* **Parameters**: ``` loadmodule "topoh.so" modparam("topoh", "mask_key", "N2hkVvBTxJ6Y") modparam("topoh", "mask_callid", 0) modparam("topoh", "sanity_checks", 1) modparam("topoh", "uri_prefix_checks", 1) modparam("topoh", "mask_ip", MY_IP_ADDR) loadmodule "topos.so" loadmodule "topos_redis.so" modparam("topos", "storage", "redis") modparam("topos", "branch_expire", 300) modparam("topos", "dialog_expire", 10800) modparam("topos", "clean_interval", 30) modparam("topos_redis", "serverid", "topo") ``` * **Kamailio Version** - output of `kamailio -v`

``` # kamailio -v version: kamailio 5.1.6 (x86_64/linux) flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, 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_BLACKLIST, HAVE_RESOLV_RES 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: unknown compiled with gcc 4.9.2 ```

* **Operating System**:

<!-- Details about the operating system, the type: Linux (e.g.,: Debian 8.4, Ubuntu 16.04, CentOS 7.1, ...), MacOS, xBSD, Solaris, ...; Kernel details (output of `uname -a`) -->

``` Debian 8.10 ```