[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/janus/bin/janus'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f58cc3d07d9 in lws_write () from /usr/lib/libwebsockets.so.12
(gdb) bt
#0  0x00007f58cc3d07d9 in lws_write () from /usr/lib/libwebsockets.so.12
#1  0x00007f58cc3d5ecd in lws_return_http_status () from /usr/lib/libwebsockets.so.12
#2  0x00007f58cc5efd1c in janus_websockets_callback_http (wsi=0x7f58a800b7d0, reason=<optimized out>, user=<optimized out>, in=<optimized out>, len=<optimized out>) at transports/janus_websockets.c:868
#3  0x00007f58cc3e0a46 in lws_http_action () from /usr/lib/libwebsockets.so.12
#4  0x00007f58cc3e169b in lws_handshake_server () from /usr/lib/libwebsockets.so.12
#5  0x00007f58cc3ca79b in lws_read () from /usr/lib/libwebsockets.so.12
#6  0x00007f58cc3df8bb in lws_server_socket_service () from /usr/lib/libwebsockets.so.12
#7  0x00007f58cc3cf236 in lws_service_fd_tsi () from /usr/lib/libwebsockets.so.12
#8  0x00007f58cc3dd93e in _lws_plat_service_tsi () from /usr/lib/libwebsockets.so.12
#9  0x00007f58cc5f006f in janus_websockets_thread (data=0x994200) at transports/janus_websockets.c:847
#10 0x00007f58dd0e6965 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f58db94c184 in start_thread (arg=0x7f58b1058700) at pthread_create.c:312
#12 0x00007f58db678ffd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111