#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
#1  0x00000000004dbf87 in ast_channel_get_bridge_channel (chan=0x91e95a <__ast_string_field_empty_buffer+2>) at channel.c:10502
#2  0x00007f0830d9c7dc in dial_bridge_after_cb (chan=0x91e95a <__ast_string_field_empty_buffer+2>, data=0x7f0710002548) at stasis/control.c:914
#3  0x00007f0830d9c9d0 in dial_bridge_after_cb_failed (reason=AST_BRIDGE_AFTER_CB_REASON_DESTROY, data=0x7f0710002548) at stasis/control.c:929
#4  0x000000000047fe9c in after_bridge_cb_failed (node=0x7f0710033db0) at bridge_after.c:70
#5  0x000000000047ff77 in after_bridge_cb_run_discard (after_bridge=0x7f0710002650, reason=AST_BRIDGE_AFTER_CB_REASON_DESTROY) at bridge_after.c:99
#6  0x000000000047ffb1 in after_bridge_cb_destroy (data=0x7f0710002650) at bridge_after.c:117
#7  0x000000000050950e in ast_datastore_free (datastore=0x7f0710002120) at datastore.c:68
#8  0x00000000004c239d in ast_channel_destructor (obj=0x7f070403e208) at channel.c:2254
#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
#10 0x00000000004c3bef in ast_hangup (chan=0x7f070403e208) at channel.c:2656
#11 0x00000000005a149a in __ast_pbx_run (c=0x7f070403e208, args=0x0) at pbx.c:4561
#12 0x00000000005a1861 in pbx_thread (data=0x7f070403e208) at pbx.c:4653
#13 0x000000000063c0b0 in dummy_start (data=0x7f070400f390) at utils.c:1257
#14 0x00007f08365d06ba in start_thread (arg=0x7f05f64ef700) at pthread_create.c:333
#15 0x00007f083586541d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109