[sr-dev] [kamailio/kamailio] Kamailio Random Crash Alert - 5.4.7 (Issue #3186)

[hardikpatel89]

### Description
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Hello Team,
We are using Kamailio 5.4.7 and we found there is a random crash. We have observed the core logs and we noticed it is due to some of the RPC events. We have noticed it has been crashed from the "ctl handler" process.

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#### Debugging Data
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Core dump files are attached.

[core-7519.txt](https://github.com/kamailio/kamailio/files/9099633/core-7519.txt)
[core-17582.txt](https://github.com/kamailio/kamailio/files/9099634/core-17582.txt)
[core-7519.txt](https://github.com/kamailio/kamailio/files/9099638/core-7519.txt)
[core-17582.txt](https://github.com/kamailio/kamailio/files/9099639/core-17582.txt)
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### Additional Information

  * **Kamailio Version** - output of `kamailio -v`

```
version: kamailio 5.4.7 (x86_64/linux) a19fe1
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_BLACKLIST, HAVE_RESOLV_RES, TLS_PTHREAD_MUTEX_SHARED
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: a19fe1
compiled on 02:56:57 Feb 16 2022 with gcc 8.3.0
```

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