#0  0x00007fad156f51d7 in raise () from /lib64/libc.so.6
#1  0x00007fad156f68c8 in abort () from /lib64/libc.so.6
#2  0x00007fad15734f07 in __libc_message () from /lib64/libc.so.6
#3  0x00007fad1573c503 in _int_free () from /lib64/libc.so.6
#4  0x00000000004b2516 in ast_channel_destructor (obj=0x7fac9001ef38)
    at channel.c:2283
#5  0x000000000045c5ec in __ao2_ref (user_data=0x7fac9001ef38, 
    delta=delta@entry=-1, tag=tag@entry=0x61b53e "", 
    file=file@entry=0x625286 "channel.c", line=line@entry=2706, 
    func=func@entry=0x634945 <__PRETTY_FUNCTION__.20322> "ast_hangup")
    at astobj2.c:569
#6  0x000000000045e924 in __container_unlink_node_debug (
    func=0x634945 <__PRETTY_FUNCTION__.20322> "ast_hangup", line=2706, 
    file=0x625286 "channel.c", tag=0x61b53e "", flags=<optimized out>, 
    node=0x7fac90020b50) at astobj2_container.c:52
#7  internal_ao2_traverse (self=self@entry=0x2359ad8, flags=35, 
    cb_fn=cb_fn@entry=0x45dd80 <ao2_match_by_addr>, 
    arg=arg@entry=0x7fac9001ef38, tag=tag@entry=0x61b53e "", 
    file=file@entry=0x625286 "channel.c", line=line@entry=2706, 
    func=func@entry=0x634945 <__PRETTY_FUNCTION__.20322> "ast_hangup", 
    type=AO2_CALLBACK_DEFAULT, data=0x0) at astobj2_container.c:377
#8  0x000000000045ecef in __ao2_callback (
    func=0x634945 <__PRETTY_FUNCTION__.20322> "ast_hangup", line=2706, 
---Type <return> to continue, or q <return> to quit--- 
    file=0x625286 "channel.c", tag=0x61b53e "", arg=0x7fac9001ef38, 
    cb_fn=0x45dd80 <ao2_match_by_addr>, flags=<optimized out>, c=0x2359ad8)
    at astobj2_container.c:416
#9  __ao2_unlink (c=0x2359ad8, user_data=user_data@entry=0x7fac9001ef38, 
    flags=<optimized out>, flags@entry=0, tag=tag@entry=0x61b53e "", 
    file=file@entry=0x625286 "channel.c", line=line@entry=2706, 
    func=func@entry=0x634945 <__PRETTY_FUNCTION__.20322> "ast_hangup")
    at astobj2_container.c:187
#10 0x00000000004b37b3 in ast_hangup (chan=chan@entry=0x7fac9001ef38)
    at channel.c:2706
#11 0x000000000058017f in __ast_pbx_run (c=c@entry=0x7fac9001ef38, 
    args=args@entry=0x0) at pbx.c:4558
#12 0x0000000000580e23 in pbx_thread (data=data@entry=0x7fac9001ef38)
    at pbx.c:4650
#13 0x00000000005f917a in dummy_start (data=<optimized out>) at utils.c:1233
#14 0x00007fad164f7dc5 in start_thread () from /lib64/libpthread.so.0
#15 0x00007fad157b776d in clone () from /lib64/libc.so.6