.
Thread 3 (Thread 19277):
#0  0x00007f69fd1710c3 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = 18446744073709551100
        oldtype = 0
        result = <value optimized out>
#1  0x00007f69fd69fd68 in g_main_context_poll (context=0x7f6a01705e00, block=<value optimized out>, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.29.8/./glib/gmain.c:3441
        poll_func = 0x7f69fd6ae540 <g_poll>
#2  g_main_context_iterate (context=0x7f6a01705e00, block=<value optimized out>, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.29.8/./glib/gmain.c:3123
        max_priority = 2147483647
        timeout = -1
        some_ready = <value optimized out>
        nfds = 1
        allocated_nfds = <value optimized out>
        fds = 0x7f6a016defd0
#3  0x00007f69fd6a0592 in g_main_loop_run (loop=0x7f6a016defb0) at /build/buildd/glib2.0-2.29.8/./glib/gmain.c:3336
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#4  0x00007f69f4640a0b in dconf_context_thread (data=<value optimized out>) at dconfcontext.c:11
        context = 0x7f6a01705e00
        loop = <value optimized out>
        __PRETTY_FUNCTION__ = "dconf_context_thread"
#5  0x00007f69fd6c5256 in g_thread_create_proxy (data=0x7f6a014b4100) at /build/buildd/glib2.0-2.29.8/./glib/gthread.c:1954
        thread = 0x7f6a014b4100
        __PRETTY_FUNCTION__ = "g_thread_create_proxy"
#6  0x00007f69fd444d8c in start_thread (arg=0x7f69e4905700) at pthread_create.c:304
        pd = 0x7f69e4905700
        now = <value optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140092782958336, -1143496619915763915, 140736474785328, 140092782959040, 0, 3, 1077119804523913013, 1077065550521933621}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        robust = <value optimized out>
        sp = <value optimized out>
        freesize = <value optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007f69fd17e20d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (Thread 19279):
#0  0x00007f69fd1710c3 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = 18446744073709551100
        oldtype = 0
        result = <value optimized out>
#1  0x00007f69fd69fd68 in g_main_context_poll (context=0x7f6a014eb1f0, block=<value optimized out>, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.29.8/./glib/gmain.c:3441
        poll_func = 0x7f69fd6ae540 <g_poll>
#2  g_main_context_iterate (context=0x7f6a014eb1f0, block=<value optimized out>, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.29.8/./glib/gmain.c:3123
        max_priority = 2147483647
        timeout = -1
        some_ready = <value optimized out>
        nfds = 3
        allocated_nfds = <value optimized out>
        fds = 0x7f6a014eb3c0
#3  0x00007f69fd6a0592 in g_main_loop_run (loop=0x7f6a01695bf0) at /build/buildd/glib2.0-2.29.8/./glib/gmain.c:3336
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#4  0x00007f69fde616f6 in gdbus_shared_thread_func (user_data=0x7f6a014eb1c0) at /build/buildd/glib2.0-2.29.8/./gio/gdbusprivate.c:276
        data = 0x7f6a014eb1c0
#5  0x00007f69fd6c5256 in g_thread_create_proxy (data=0x7f6a014eb2e0) at /build/buildd/glib2.0-2.29.8/./glib/gthread.c:1954
        thread = 0x7f6a014eb2e0
        __PRETTY_FUNCTION__ = "g_thread_create_proxy"
#6  0x00007f69fd444d8c in start_thread (arg=0x7f69dffff700) at pthread_create.c:304
        pd = 0x7f69dffff700
        now = <value optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140092706387712, -1143496619915763915, 140092782954624, 140092706388416, 0, 3, 1077138894579801909, 1077065550521933621}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        robust = <value optimized out>
        sp = <value optimized out>
        freesize = <value optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007f69fd17e20d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 19273):
#0  g_type_instance_get_private (instance=0x7f6a01a28300, private_type=140093265865984) at /build/buildd/glib2.0-2.29.8/./gobject/gtype.c:4503
        instance_node = 0x0
        private_node = 0x7f69fdda01c8
        parent_node = 0x7f69fd948820
        class = 0x4058000000000000
        offset = <value optimized out>
        __PRETTY_FUNCTION__ = "g_type_instance_get_private"
#1  0x00007f69de341e09 in device_services_changed (iface=0x7f6a01b691e0, property=0x7f6a01714fb0 "State", value=0x7f6a01807020, user_data=0x7f6a01a28300) at bluetooth-client.c:374
        client = 0x7f6a01a28300
        priv = <value optimized out>
        iter = {stamp = 28627648, user_data = 0x7f6a01917dd0, user_data2 = 0x7f6a01b691e0, user_data3 = 0x7f69fdb86135}
        tree_path = <value optimized out>
        table = <value optimized out>
        path = <value optimized out>
        status = <value optimized out>
#2  0x00007f69f29d0bf7 in marshal_dbus_message_to_g_marshaller (closure=0x7f6a01917dd0, return_value=0x0, n_param_values=<value optimized out>, param_values=<value optimized out>, invocation_hint=0x7fffc3962a90, marshal_data=0x0) at dbus-gproxy.c:1733
        value_array = 0x7f6a014dfee0
        c_marshaller = 0x7f69de3478e0 <marshal_VOID__STRING_BOXED>
        proxy = 0x7f6a01b691e0
        message = <value optimized out>
        gsignature = <value optimized out>
        types = <value optimized out>
        priv = <value optimized out>
        __PRETTY_FUNCTION__ = "marshal_dbus_message_to_g_marshaller"
#3  0x00007f69fdb5dd54 in g_closure_invoke (closure=0x7f6a01917dd0, return_value=0x0, n_param_values=3, param_values=0x7f6a018ca0a0, invocation_hint=<value optimized out>) at /build/buildd/glib2.0-2.29.8/./gobject/gclosure.c:771
        marshal = 0x7f69f29d0a60 <marshal_dbus_message_to_g_marshaller>
        marshal_data = <value optimized out>
        in_marshal = <value optimized out>
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#4  0x00007f69fdb6fbbb in signal_emit_unlocked_R (node=<value optimized out>, detail=1977, instance=0x7f6a01b691e0, emission_return=0x0, instance_and_params=0x7f6a018ca0a0) at /build/buildd/glib2.0-2.29.8/./gobject/gsignal.c:3256
        tmp = <value optimized out>
        handler = 0x7f6a019fed00
        accumulator = 0x0
        emission = {next = 0x0, instance = 0x7f6a01b691e0, ihint = {signal_id = 316, detail = 1977, run_type = G_SIGNAL_RUN_FIRST}, state = EMISSION_RUN, chain_type = 4}
        class_closure = 0x0
        hlist = 0x7f69fd448d70
        handler_list = 0x7f6a019fed00
        return_accu = 0x0
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        signal_id = 316
        max_sequential_handler_number = 3726
        return_value_altered = 0
#5  0x00007f69fdb791c7 in g_signal_emit_valist (instance=<value optimized out>, signal_id=<value optimized out>, detail=<value optimized out>, var_args=0x7fffc3962c78) at /build/buildd/glib2.0-2.29.8/./gobject/gsignal.c:2987
        instance_and_params = 0x7f6a018ca0a0
        signal_return_type = 4
        param_values = 0x7f6a018ca0b8
        node = 0x7f6a01680650
        i = <value optimized out>
        n_params = 2
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#6  0x00007f69fdb79392 in g_signal_emit (instance=<value optimized out>, signal_id=<value optimized out>, detail=<value optimized out>) at /build/buildd/glib2.0-2.29.8/./gobject/gsignal.c:3044
        var_args = {{gp_offset = 40, fp_offset = 48, overflow_arg_area = 0x7fffc3962d50, reg_save_area = 0x7fffc3962c90}}
#7  0x00007f69f29d1226 in dbus_g_proxy_emit_remote_signal (connection=<value optimized out>, message=<value optimized out>, user_data=0x7f6a016b69b0) at dbus-gproxy.c:1786
        gsignature = <value optimized out>
        i = <value optimized out>
        interface = <value optimized out>
        signal = <value optimized out>
        q = 1977
        name = 0x7f6a018cb350 "org-bluez-Headset-PropertyChanged"
        priv = 0x7f6a01b69200
        msg_gsignature = <value optimized out>
#8  dbus_g_proxy_manager_filter (connection=<value optimized out>, message=<value optimized out>, user_data=0x7f6a016b69b0) at dbus-gproxy.c:1353
        proxy = 0x7f6a01b691e0
        tri = <value optimized out>
        tmp = 0x7f6a01a4fd20
        full_list = 0x7f6a01a4fd20
        owned_names = <value optimized out>
        sender = <value optimized out>
        manager = 0x7f6a016b69b0
#9  dbus_g_proxy_manager_filter (connection=<value optimized out>, message=<value optimized out>, user_data=0x7f6a016b69b0) at dbus-gproxy.c:1194
No locals.
#10 0x00007f69f4a68976 in dbus_connection_dispatch (connection=0x7f6a01a1d860) at dbus-connection.c:4647
        filter = <value optimized out>
        next = 0x0
        message = 0x7f6a019d8c70
        link = <value optimized out>
        filter_list_copy = 0x7f6a01a49430
        message_link = 0x7f6a01a49418
        result = DBUS_HANDLER_RESULT_NOT_YET_HANDLED
        pending = <value optimized out>
        reply_serial = <value optimized out>
        status = <value optimized out>
        __FUNCTION__ = "dbus_connection_dispatch"
#11 0x00007f69f29ca3f5 in message_queue_dispatch (source=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at dbus-gmain.c:90
        connection = 0x7f6a01a1d860
#12 0x00007f69fd69f85d in g_main_dispatch (context=0x7f6a01392500) at /build/buildd/glib2.0-2.29.8/./glib/gmain.c:2477
        dispatch = 0x7f69f29ca3e0 <message_queue_dispatch>
        was_in_call = 0
        user_data = 0x0
        callback = 0
        cb_funcs = 0x0
        cb_data = 0x0
        current_source_link = {data = 0x7f6a019be540, next = 0x0}
        need_destroy = <value optimized out>
        source = 0x7f6a019be540
        current = 0x7f6a015812c0
        i = <value optimized out>
#13 g_main_context_dispatch (context=0x7f6a01392500) at /build/buildd/glib2.0-2.29.8/./glib/gmain.c:3050
No locals.
#14 0x00007f69fd6a0058 in g_main_context_iterate (context=0x7f6a01392500, block=<value optimized out>, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.29.8/./glib/gmain.c:3128
        max_priority = 0
        timeout = 0
        some_ready = 1
        nfds = 10
        allocated_nfds = <value optimized out>
        fds = <value optimized out>
#15 0x00007f69fd6a0592 in g_main_loop_run (loop=0x7f6a0160f8b0) at /build/buildd/glib2.0-2.29.8/./glib/gmain.c:3336
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#16 0x00007f69ff057dcd in gtk_main () at /build/buildd/gtk+3.0-3.1.6/./gtk/gtkmain.c:1363
        loop = 0x7f6a0160f8b0
#17 0x00007f69fde3848e in g_application_run (application=0x7f6a01516290, argc=<value optimized out>, argv=<value optimized out>) at /build/buildd/glib2.0-2.29.8/./gio/gapplication.c:1326
        arguments = 0x7f6a0160f8b0
        status = 0
        i = <value optimized out>
        __PRETTY_FUNCTION__ = "g_application_run"
#18 0x00007f69ff98903a in main (argc=2, argv=0x7fffc3963148) at control-center.c:180
        shell = <value optimized out>
        application = 0x7f6a01516290
        status = <value optimized out>