Deepgram SR plugin segmentation fault

[Milagros González]

Hello,

I'm working whith Deepgram SR plugin to connect our IVR platform with Deepgram streaming transcription service.
Both UniMRCP server and Deepgram SR plugin was installed using deb packages with apt-get.  
After some testing I noticed that unimrcp process was restarted frecuently due to segmentation fault.
I enabled core dump generation in the server we are using for this PoC and this is what I got from gdb bt:

root@unimrcpdev01:~# gdb /opt/unimrcp/bin/unimrcpserver /var/coredumps/core-unimrcp.35301.1750661115
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Reading symbols from /opt/unimrcp/bin/unimrcpserver...
(No debugging symbols found in /opt/unimrcp/bin/unimrcpserver)
[New LWP 35304]
[New LWP 35301]
[New LWP 35302]
[New LWP 35303]
[New LWP 35305]
[New LWP 35306]
[New LWP 35307]
[New LWP 35309]
[New LWP 35310]
[New LWP 35308]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/opt/unimrcp/bin/unimrcpserver -r /opt/unimrcp -o 2 -w'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007fb1540004a0 in ?? ()
[Current thread is 1 (Thread 0x7fb158979640 (LWP 35304))]
(gdb) bt
#0  0x00007fb1540004a0 in ?? ()
#1  0x00007fb159cb9469 in UniEdpf::TimerQueue::Advance() () from /opt/unimrcp/plugin/umsdeepgram.so
#2  0x00007fb159cb87b2 in UniEdpf::SoftEventProcessor::RunEventLoop() () from /opt/unimrcp/plugin/umsdeepgram.so
#3  0x00007fb159cb88f0 in ?? () from /opt/unimrcp/plugin/umsdeepgram.so
#4  0x00007fb15a571ac3 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#5  0x00007fb15a603850 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81
(gdb)

The issue reproduces easily, almost for each request with transcript result.

List of installed packages below:

root@unimrcpdev01:~# dpkg --list | grep unimrcp
ii  unimrcp-client                         1:1.7.0-jammy                           amd64        UniMRCP client shared libraries and sample applications
ii  unimrcp-client-dev                     1:1.7.0-jammy                           amd64        UniMRCP client development kit
ii  unimrcp-common                         1:1.7.0-jammy                           amd64        UniMRCP common data
ii  unimrcp-common-dev                     1:1.7.0-jammy                           amd64        UniMRCP common development kit
ii  unimrcp-deepgram-sr                    1:1.7.5-jammy                           amd64        Deepgram Speech Recognition plugin to UniMRCP server
ii  unimrcp-demo-plugins                   1:1.7.0-jammy                           amd64        UniMRCP server demo plugins
ii  unimrcp-server                         1:1.7.0-jammy                           amd64        UniMRCP server shared library and application

Please, let me what extra information can be usefull to investigate this issue.

Thanks,

Mila