.
Thread 1 (Thread 0x7f91a86d3740 (LWP 1317)):
#0  g_slist_append (list=0x0, data=0x7f91a9c60e00) at /build/buildd/glib2.0-2.30.0/./glib/gslist.c:255
        new_list = 0x7f91a8780ce5
        last = <optimized out>
#1  0x00007f91a8715bae in add_interface (destroy=0, user_data=<optimized out>, properties=0x0, signals=0x0, methods=0x7f91a89a1c40, name=0x7f91a8779d70 "org.freedesktop.DBus.Introspectable", data=<optimized out>) at gdbus/object.c:516
        iface = <optimized out>
#2  object_path_ref (path=0x7f91a878ab5a "/org/bluez/test", connection=0x7f91a9c5a010) at gdbus/object.c:546
        data = 0x7f91a9c60ca0
#3  g_dbus_register_interface (connection=0x7f91a9c5a010, path=0x7f91a878ab5a "/org/bluez/test", name=0x7f91a878ab42 "org.bluez.TelephonyTest", methods=0x7f91a89a4700, signals=0x7f91a89a4880, properties=0x0, user_data=0x0, destroy=0) at gdbus/object.c:682
        data = 0x702d6c6169726573
#4  0x00007f91a8779a98 in telephony_init () at audio/telephony.c:408
        __FUNCTION__ = "telephony_init"
#5  0x00007f91a8717c95 in state_changed (adapter=0x7f91a9c60720, powered=1) at audio/manager.c:880
        adp = <optimized out>
        telephony = 0
        l = <optimized out>
        __FUNCTION__ = "state_changed"
#6  0x00007f91a87184ef in headset_server_probe (adapter=0x7f91a9c60720) at audio/manager.c:913
        adp = 0x7f91a9c69c60
        path = <optimized out>
        err = -1446643104
        __FUNCTION__ = "headset_server_probe"
#7  0x00007f91a876c406 in probe_driver (adapter=0x7f91a9c60720, user_data=0x7f91a89a1da0) at src/adapter.c:2129
        driver = 0x7f91a89a1da0
        err = <optimized out>
#8  0x00007f91a876f91c in load_drivers (adapter=0x7f91a9c60720) at src/adapter.c:2144
        l = 0x7f91a9c5fa60
#9  adapter_init (adapter=0x7f91a9c60720) at src/adapter.c:2520
No locals.
#10 0x00007f91a876b40e in btd_manager_register_adapter (id=0) at src/manager.c:397
        adapter = 0x7f91a9c60720
        path = <optimized out>
        __FUNCTION__ = "btd_manager_register_adapter"
#11 0x00007f91a8746e23 in init_adapter (index=0) at plugins/hciops.c:590
        dev = 0x7f91a9c608f0
        adapter = 0x0
        existing_adapter = <optimized out>
        mode = <optimized out>
        on_mode = <optimized out>
        pairable = <optimized out>
        discoverable = <optimized out>
#12 0x00007f91a8748cb9 in device_devup_setup (index=0) at plugins/hciops.c:2516
        dev = 0x7f91a9c608f0
        di = {dev_id = 0, name = "hci0\000\000\000", bdaddr = {b = "\021\021\021\021\021\021"}, flags = 4613, type = 1 '\001', features = "\277\376\215x\b\030\000", pkt_type = 52472, link_policy = 5, link_mode = 32768, acl_mtu = 678, acl_pkts = 8, sco_mtu = 48, sco_pkts = 10, stat = {err_rx = 0, err_tx = 0, cmd_tx = 15, evt_rx = 15, acl_tx = 0, acl_rx = 0, sco_tx = 0, sco_rx = 0, byte_rx = 438, byte_tx = 66}}
        cp = {bdaddr = {b = "\000\000\000\000\000"}, read_all = 1 '\001'}
#13 device_event (event=<optimized out>, index=0) at plugins/hciops.c:2649
No locals.
#14 0x00007f91a8749062 in io_stack_event (chan=<optimized out>, cond=<optimized out>, data=<optimized out>) at plugins/hciops.c:2763
        buf = "\004\375\006\001\000\003", '\000' <repeats 490 times>, "\004\016\004\001E\f\000\177\377\357\001\376\337\357\377\377\377\377\377\363\017\250\377\a", '\000' <repeats 250 times>, "hci0\000\000\000\000\021\021\021\021\021\021\006\022\000\000\001\277\376\215x\b\030\000\000\000\000\000\370\314\000\000\000\000\000\000\000\200\000\000\246\002\b\000\060\000\n\000\000\000\000\000\000\000\000\000\017\000\000\000\016", '\000' <repeats 19 times>"\260, \001\000\000=", '\000' <repeats 47 times>"\356, \262\002\250\221\177\000\000\002", '\000' <repeats 31 times>"\274, \374+\250\221\177\000\000\274\374+\250\221\177\000\000\070\002\305\251\221\177\000\000 \002\305\251\221\177\000\000 \000,\250\221\177\000\000\060\324\305\251\221\177\000\000\000\000\000\000\000\000\000\000\001\000\000\000\000\000\000\000p\374\305\251\221\177\000\000U!\005\250\221\177\000\000\320\003\306\251"
        ptr = 0x7fff0c75b243 "\001"
        si = 0x7fff0c75b243
        eh = 0x7fff0c75b241
        type = <optimized out>
        fd = <optimized out>
        len = 140263573425381
#15 0x00007f91a800fa5d in g_main_dispatch (context=0x7f91a9c5d430) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:2441
        dispatch = 0x7f91a8052130 <g_io_unix_dispatch>
        was_in_call = 0
        user_data = 0x0
        callback = 0x7f91a8748fe0 <io_stack_event>
        cb_funcs = 0x7f91a82bf670
        cb_data = 0x7f91a9c60470
        current_source_link = {data = 0x7f91a9c603d0, next = 0x0}
        need_destroy = <optimized out>
        source = 0x7f91a9c603d0
        current = 0x7f91a9c5fc70
        i = <optimized out>
#16 g_main_context_dispatch (context=0x7f91a9c5d430) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3011
No locals.
#17 0x00007f91a8010258 in g_main_context_iterate (context=0x7f91a9c5d430, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3089
        max_priority = 2147483647
        timeout = -1
        some_ready = 1
        nfds = 10
        allocated_nfds = <optimized out>
        fds = <optimized out>
#18 0x00007f91a8010792 in g_main_loop_run (loop=0x7f91a9c601a0) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3297
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#19 0x00007f91a8713304 in main (argc=1, argv=0x7fff0c75b948) at src/main.c:479
        context = <optimized out>
        err = 0x0
        sa = {__sigaction_handler = {sa_handler = 0x1, sa_sigaction = 0x1}, sa_mask = {__val = {0 <repeats 16 times>}}, sa_flags = 1, sa_restorer = 0}
        config = 0x7f91a9c51000
        __FUNCTION__ = "main"