#0  0x00007f0962b6d1d7 in raise () from /lib64/libc.so.6
#1  0x00007f0962b6e8c8 in abort () from /lib64/libc.so.6
#2  0x00007f0962bacf07 in __libc_message () from /lib64/libc.so.6
#3  0x00007f0962bb4503 in _int_free () from /lib64/libc.so.6
#4  0x0000000000523dff in __frame_free (cache=1, fr=0x7f092800d700)
    at frame.c:157
#5  ast_frame_free (frame=frame@entry=0x7f092800d700, cache=cache@entry=1)
    at frame.c:171
#6  0x0000000000483268 in bridge_frame_free (frame=<optimized out>)
    at bridge_channel.c:969
#7  bridge_channel_handle_write (bridge_channel=<optimized out>)
    at bridge_channel.c:2349
#8  bridge_channel_wait (bridge_channel=0x7f092800f1c8)
    at bridge_channel.c:2622
#9  bridge_channel_internal_join (
    bridge_channel=bridge_channel@entry=0x7f092800f1c8)
    at bridge_channel.c:2757
#10 0x000000000046d47e in ast_bridge_join (bridge=0x7f0918007518, 
    chan=chan@entry=0x7f08dc01a338, swap=swap@entry=0x0, 
    features=features@entry=0x7f08bb07c538, 
    tech_args=tech_args@entry=0x7f08bb07c560, flags=flags@entry=(unknown: 0))
    at bridge.c:1715
#11 0x00007f08ec8ad8de in confbridge_exec (chan=0x7f08dc01a338, 
    data=<optimized out>) at app_confbridge.c:2448
#12 0x00000000005895a6 in pbx_exec (c=c@entry=0x7f08dc01a338, 
    app=app@entry=0x2039310, 
    data=data@entry=0x7f08bb07cb20 "206,,,default_menu") at pbx_app.c:491
#13 0x000000000057d9f9 in pbx_extension_helper (c=c@entry=0x7f08dc01a338, 
    context=0x7f08dc01ad08 "Conferences", 
    exten=exten@entry=0x7f08dc01ad58 "206", priority=priority@entry=5, 
    label=label@entry=0x0, callerid=callerid@entry=0x7f08dc0080e0 "198", 
    action=action@entry=E_SPAWN, found=found@entry=0x7f08bb07eba0, 
    combined_find_spawn=combined_find_spawn@entry=1, con=0x0) at pbx.c:2923
#14 0x000000000057f903 in ast_spawn_extension (combined_find_spawn=1, 
    found=0x7f08bb07eba0, callerid=0x7f08dc0080e0 "198", priority=5, 
    exten=0x7f08dc01ad58 "206", context=<optimized out>, c=0x7f08dc01a338)
    at pbx.c:4154
#15 __ast_pbx_run (c=c@entry=0x7f08dc01a338, args=args@entry=0x0)
    at pbx.c:4328
#16 0x0000000000580e23 in pbx_thread (data=data@entry=0x7f08dc01a338)
    at pbx.c:4650
#17 0x00000000005f917a in dummy_start (data=<optimized out>) at utils.c:1233
#18 0x00007f096396fdc5 in start_thread () from /lib64/libpthread.so.0
#19 0x00007f0962c2f76d in clone () from /lib64/libc.so.6