### Description
Kamailio is crashing randomly 1 or 2 times a day. We have 2 kamailio with
DMQ/Dialog sharing.
#### Debugging Data
```
#0 0x00007feb7466ddf3 in destroy_linkers () from
/usr/lib64/kamailio/modules/dialog.so
No symbol table info available.
#1 0x00007feb7463a42e in dlg_dmq_handle_msg () from
/usr/lib64/kamailio/modules/dialog.so
No symbol table info available.
#2 0x00007feb74d90718 in worker_loop () from /usr/lib64/kamailio/modules/dmq.so
No symbol table info available.
#3 0x00007feb74d73686 in ?? () from /usr/lib64/kamailio/modules/dmq.so
No symbol table info available.
#4 0x00000000005e79b0 in ?? ()
No symbol table info available.
#5 0x00000000005e763c in ?? ()
No symbol table info available.
#6 0x00000000005e763c in ?? ()
No symbol table info available.
#7 0x00000000005e763c in ?? ()
No symbol table info available.
#8 0x00000000005e763c in ?? ()
No symbol table info available.
#9 0x00000000005e763c in ?? ()
No symbol table info available.
#10 0x00000000005e763c in ?? ()
No symbol table info available.
#11 0x00000000005e763c in ?? ()
No symbol table info available.
#12 0x00000000005e80e9 in init_child ()
No symbol table info available.
#13 0x0000000000426b94 in main_loop ()
---Type <return> to continue, or q <return> to quit---
No symbol table info available.
#14 0x000000000042e52a in main ()
No symbol table info available.
```
#### Log Messages
```
/usr/sbin/kamailio[9221]: CRITICAL: <core> [core/mem/q_malloc.c:521]:
qm_free(): BUG: freeing already freed pointer (0x7feb781ee500), called from
dialog: dlg_profile.c: destroy_linkers(291), first free dialog: dlg_profile.c:
destroy_linkers(291) - ignoring
/usr/sbin/kamailio[9221]: ALERT: <core> [main.c:767]: handle_sigs(): child
process 9495 exited by a signal 11
/usr/sbin/kamailio[9221]: ALERT: <core> [main.c:770]: handle_sigs(): core was
generated
/usr/sbin/kamailio[9221]: CRITICAL: <core> [main.c:678]: sig_alarm_abort():
shutdown timeout triggered, dying...
```
### Additional Information
```
version: kamailio 5.3.2 (x86_64/linux) 7ba545
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
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: 7ba545
compiled on 11:29:01 Jan 9 2020 with gcc 4.4.7
```
* **Operating System**:
```
2.6.32-042stab140.1 #1 SMP Thu Aug 15 13:32:22 MSK 2019 x86_64 x86_64 x86_64
GNU/Linux
```
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