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Kamailio 5.6 (and 5.7) core dumps with uac_req_send() from uac module #3725
Comments
Can you install debugging symbols for Kamailio and retake the backtrace with gdb? The one above does not show the details of the code during the execution. |
Yes, I will try to do that. Currently I am running 5.5 because that is not showing this behaviour. I will put 5.7 on the test system and see if I can reproduce the problem there. Do you have a link to a page that describe how to install the debugging symbols for Kamailio? |
There are dbgsym packages available in the repo |
This issue is stale because it has been open 6 weeks with no activity. Remove stale label or comment or this will be closed in 2 weeks. |
Description
We have a quite basic scenario which sends a SIP MESSAGE and then receives SIP MESSAGE back. It also sets up two voice calls using SIP INVITE. It is only this specific scenario that is causing the core dump. Some time the core dump occur just a few seconds after the call/message scenario, but occasionally it takes up to 50 minutes.
We have been using the uac module for sending SIP MESSAGE in several other scenarios without experiencing a crash.
We always see the same lines in the log just prior to the core dump: CRITICAL: [core/pass_fd.c:281]: receive_fd(): EOF on 49
We are using Kamailio 5.6 retrieved from the kamailio repository: http://deb.kamailio.org/kamailio56. We are running Kamailio in a Docker container which runs on
5.10.0-25-cloud-amd64 #1 SMP Debian 5.10.191-1 (2023-08-16) x86_64 GNU/Linux
We have also tried Kamailio 5.7 from the same repo which crashes in exactly the same way.
Troubleshooting
Reproduction
We have troubles to consistently reproduce it and it only happen from time to time when running a specific scenario sending SIP MESSAGE using the uac module. It does not happen for every call of this call scenario. At one instance Kamailo crashed with just 15 seconds in-between during the call scenario.
Debugging Data
Log Messages
SIP Traffic
Possible Solutions
Additional Information
kamailio -v
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