#0  0x00000000004d10ed in ast_channel_dialed_causes_add (chan=0x0,
    cause_code=0x7fa192eaa860, datalen=109) at channel_internal_api.c:1420
#1  0x00000000004ba631 in ast_channel_hangupcause_hash_set (chan=0x0,
    cause_code=0x7fa192eaa860, datalen=109) at channel.c:4355
#2  0x00007fa17433a58e in chan_pjsip_incoming_response (session=0x7fa198508c68,
    rdata=<optimized out>) at chan_pjsip.c:2250
#3  0x00007fa19d3a83d6 in handle_incoming_response (
    response_priority=AST_SIP_SESSION_AFTER_MEDIA, rdata=0x20c99f8,
    session=0x7fa198508c68, type=<optimized out>) at res_pjsip_session.c:2223
#4  handle_incoming (session=session@entry=0x7fa198508c68, rdata=0x20c99f8,
    response_priority=response_priority@entry=AST_SIP_SESSION_AFTER_MEDIA,
    type=<error reading variable: Unhandled dwarf expression opcode 0xfa>)
    at res_pjsip_session.c:2237
#5  0x00007fa19d3aa616 in session_inv_on_tsx_state_changed (inv=0x7fa198508a28,
    tsx=0x2027858, e=0x7fa192eaaa60) at res_pjsip_session.c:2412
#6  0x00007fa19cc6f445 in mod_inv_on_tsx_state () from /usr/lib/libpjsip-ua.so.2
#7  0x00007fa19c8408cd in pjsip_dlg_on_tsx_state () from /usr/lib/libpjsip.so.2
#8  0x00007fa19c83b284 in tsx_set_state () from /usr/lib/libpjsip.so.2
#9  0x00007fa19c83c4a6 in tsx_on_state_proceeding_uac ()
   from /usr/lib/libpjsip.so.2
#10 0x00007fa19c83c7e6 in tsx_on_state_calling () from /usr/lib/libpjsip.so.2
#11 0x00007fa19c83e0ea in pjsip_tsx_recv_msg () from /usr/lib/libpjsip.so.2
#12 0x00007fa19c83e195 in mod_tsx_layer_on_rx_response ()
   from /usr/lib/libpjsip.so.2
#13 0x00007fa19c829316 in pjsip_endpt_process_rx_data ()
   from /usr/lib/libpjsip.so.2
#14 0x00007fa193ff2a84 in distribute (data=0x20c99f8)
    at res_pjsip/pjsip_distributor.c:439
#15 0x00000000005e338a in ast_taskprocessor_execute (tps=0x1bce238)
    at taskprocessor.c:778
#16 0x00000000005ec2c0 in execute_tasks (data=0x1bce238) at threadpool.c:1269
#17 0x00000000005e338a in ast_taskprocessor_execute (tps=0x1bccd38)
    at taskprocessor.c:778
#18 0x00000000005ea6e4 in threadpool_execute (pool=0x1bb5ff8)
    at threadpool.c:351
#19 0x00000000005ebc08 in worker_active (worker=0x7fa16802e188)
    at threadpool.c:1075
#20 0x00000000005eb9c4 in worker_start (arg=0x7fa16802e188) at threadpool.c:995
#21 0x00000000005f907c in dummy_start (data=0x7fa168009780) at utils.c:1237
#22 0x00007fa1a66b9b50 in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#23 0x00007fa1a573695d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#24 0x0000000000000000 in ?? ()