#0  0x0000000000462c15 in __ao2_ref (user_data=0x8888888888888888, delta=1, tag=0x663549 "", file=0x66430b "channel.c", line=10502, 
    func=0x669f30 <__PRETTY_FUNCTION__.22900> "ast_channel_get_bridge_channel") at astobj2.c:464
        p__LINE__ = 0x8888888888888868
        obj = 0x91e95a <__ast_string_field_empty_buffer+2>
        obj_mutex = 0x7265626d756e2063
        obj_rwlock = 0x726f662030783020
        obj_lockobj = 0x207463656a626f20
        current_value = 0
        ret = 4596640
        weakproxy = 0x3910060c23e
        __PRETTY_FUNCTION__ = "__ao2_ref"
#1  0x00000000004dbf87 in ast_channel_get_bridge_channel (chan=0x91e95a <__ast_string_field_empty_buffer+2>) at channel.c:10502
        bridge_channel = 0x8888888888888888
        __PRETTY_FUNCTION__ = "ast_channel_get_bridge_channel"
#2  0x00007f0830d9c7dc in dial_bridge_after_cb (chan=0x91e95a <__ast_string_field_empty_buffer+2>, data=0x7f0710002548) at stasis/control.c:914
        control = 0x7f0710002548
        bridge_channel = 0x69ffa8 <__PRETTY_FUNCTION__.16908>
        __PRETTY_FUNCTION__ = "dial_bridge_after_cb"
#3  0x00007f0830d9c9d0 in dial_bridge_after_cb_failed (reason=AST_BRIDGE_AFTER_CB_REASON_DESTROY, data=0x7f0710002548) at stasis/control.c:929
        control = 0x7f0710002548
        __PRETTY_FUNCTION__ = "dial_bridge_after_cb_failed"
#4  0x000000000047fe9c in after_bridge_cb_failed (node=0x7f0710033db0) at bridge_after.c:70
No locals.
#5  0x000000000047ff77 in after_bridge_cb_run_discard (after_bridge=0x7f0710002650, reason=AST_BRIDGE_AFTER_CB_REASON_DESTROY) at bridge_after.c:99
        node = 0x7f0710033db0
        __PRETTY_FUNCTION__ = "after_bridge_cb_run_discard"
#6  0x000000000047ffb1 in after_bridge_cb_destroy (data=0x7f0710002650) at bridge_after.c:117
        after_bridge = 0x7f0710002650
        __PRETTY_FUNCTION__ = "after_bridge_cb_destroy"
#7  0x000000000050950e in ast_datastore_free (datastore=0x7f0710002120) at datastore.c:68
        res = 0
#8  0x00000000004c239d in ast_channel_destructor (obj=0x7f070403e208) at channel.c:2254
        chan = 0x7f070403e208
        vardata = 0x0
        f = 0x0
        headp = 0x0
        datastore = 0x7f0710002120
        device_name = '\000' <repeats 79 times>
        callid = 0
        __PRETTY_FUNCTION__ = "ast_channel_destructor"
#9  0x0000000000463216 in __ao2_ref (user_data=0x7f070403e208, delta=-1, tag=0x663549 "", file=0x66430b "channel.c", line=2656, 
    func=0x668fe8 <__PRETTY_FUNCTION__.20245> "ast_hangup") at astobj2.c:576
        obj = 0x7f070403e1e8
        obj_mutex = 0x46268a <__ao2_unlock+218>
        obj_rwlock = 0x6647b0
        obj_lockobj = 0x65e9e2
        current_value = 0
        ret = 1
        weakproxy = 0x0
        __PRETTY_FUNCTION__ = "__ao2_ref"
#10 0x00000000004c3bef in ast_hangup (chan=0x7f070403e208) at channel.c:2656
        __PRETTY_FUNCTION__ = "ast_hangup"
#11 0x00000000005a149a in __ast_pbx_run (c=0x7f070403e208, args=0x0) at pbx.c:4561
        found = 1
        res = 0
        autoloopflag = 0
        error = 1
        pbx = 0x7f07100103c0
        callid = 0
        __PRETTY_FUNCTION__ = "__ast_pbx_run"
#12 0x00000000005a1861 in pbx_thread (data=0x7f070403e208) at pbx.c:4653
        c = 0x7f070403e208
#13 0x000000000063c0b0 in dummy_start (data=0x7f070400f390) at utils.c:1257
        __cancel_buf = {__cancel_jmp_buf = {{__cancel_jmp_buf = {0, 4833540257848191882, 0, 139669153911679, 507904, 139671283568080, 4833540257856580490, 
                -4818918555505824886}, __mask_was_saved = 0}}, __pad = {0x7f05f64eeef0, 0x0, 0x7f08358d3142 <__libc_thread_freeres+34>, 0x7f05f64ef700}}
        __cancel_routine = 0x456472 <ast_unregister_thread>
        __cancel_arg = 0x7f05f64ef700
        __not_first_call = 0
        ret = 0x4
        a = {start_routine = 0x5a183c <pbx_thread>, data = 0x7f070403e208, 
          name = 0x7f0704009750 "pbx_thread", ' ' <repeats 11 times>, "started at [ 4679] pbx.c ast_pbx_start()"}
#14 0x00007f08365d06ba in start_thread (arg=0x7f05f64ef700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7f05f64ef700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139663583934208, -4818917724435027062, 0, 139669153911679, 507904, 139671283568080, 4833540257854483338, 
                4832273780192406410}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#15 0x00007f083586541d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109