FTR: I followed 
https://www.kamailio.org/wiki/tutorials/troubleshooting/coredumpfile
Took a while until I read the line **First check if the “disable_core_dump” 
variable is set in your configuration.** :-(

```
sysctl kernel.core_pattern=/tmp/core.%e.%p.%h.%t

root@p01t-1:/var/local/src/kamailio.webrtc# DUMP_CORE=yes 
/var/local/kamailio-devel/sbin/kamailio -P 
/var/run/kamailio/kamailio.webrtc.pid -f 
/var/local/src/kamailio.webrtc/kamailio.cfg -m 48 -M 24 -u root -g root -DD
```

```
Sep  5 11:11:13 p01t-1 kamailio.webrtc[495653]: CRITICAL: <core> 
[core/pass_fd.c:281]: receive_fd(): EOF on 13
Sep  5 11:11:13 p01t-1 kamailio.webrtc[495637]: ALERT: <core> [main.c:809]: 
handle_sigs(): child process 495642 exited by a signal 11
Sep  5 11:11:13 p01t-1 kamailio.webrtc[495637]: ALERT: <core> [main.c:813]: 
handle_sigs(): core was generated
Sep  5 11:11:13 p01t-1 kamailio.webrtc[495637]: INFO: <core> [main.c:836]: 
handle_sigs(): terminating due to SIGCHLD
Sep  5 11:11:13 p01t-1 kamailio.webrtc[495641]: INFO: <core> [main.c:892]: 
sig_usr(): signal 15 received
Sep  5 11:11:13 p01t-1 kamailio.webrtc[495639]: INFO: <core> [main.c:892]: 
sig_usr(): signal 15 received
```

Backtrace attached.

[kamailio-6.0.0-dev2-backtrace.txt](https://github.com/user-attachments/files/16886993/kamailio-6.0.0-dev2-backtrace.txt)


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