.
Thread 3 (LWP 3663):
#0  0x00007f79650743cd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007f79658ef1dc in g_main_context_poll (n_fds=3, fds=0x7f79500010c0, timeout=-1, context=0x7f795800f200, priority=<optimized out>) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3995
        poll_func = 0x7f79658fd560 <g_poll>
#2  g_main_context_iterate (context=0x7f795800f200, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3696
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        allocated_nfds = <optimized out>
        fds = 0x7f79500010c0
        nfds = 3
#3  0x00007f79658ef6ba in g_main_loop_run (loop=0x7f795800f190) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3895
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#4  0x00007f7965ec14f6 in gdbus_shared_thread_func (user_data=0x7f795800f1d0) at /build/buildd/glib2.0-2.36.0/./gio/gdbusprivate.c:278
        data = 0x7f795800f1d0
#5  0x00007f7965912eb5 in g_thread_proxy (data=0x7f795800c370) at /build/buildd/glib2.0-2.36.0/./glib/gthread.c:798
        thread = 0x7f795800c370
#6  0x00007f7965356f8e in start_thread (arg=0x7f795c922700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7f795c922700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140159220852480, 131399580232706416, 0, 140159403458656, 140159229241584, 4096, -62933722272896656, -63022554640946832}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007f7965080e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 2 (LWP 3662):
#0  0x00007f79650743cd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007f79658ef1dc in g_main_context_poll (n_fds=1, fds=0x7f79580010e0, timeout=-1, context=0x7f7967e9bc40, priority=<optimized out>) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3995
        poll_func = 0x7f79658fd560 <g_poll>
#2  g_main_context_iterate (context=context@entry=0x7f7967e9bc40, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3696
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        allocated_nfds = <optimized out>
        fds = 0x7f79580010e0
        nfds = 1
#3  0x00007f79658ef304 in g_main_context_iteration (context=context@entry=0x7f7967e9bc40, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3762
        retval = <optimized out>
#4  0x00007f795d12aa1d in dconf_gdbus_worker_thread (user_data=0x7f7967e9bc40) at dconf-gdbus-thread.c:81
        context = 0x7f7967e9bc40
#5  0x00007f7965912eb5 in g_thread_proxy (data=0x7f7967e94230) at /build/buildd/glib2.0-2.36.0/./glib/gthread.c:798
        thread = 0x7f7967e94230
#6  0x00007f7965356f8e in start_thread (arg=0x7f795d123700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7f795d123700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140159229245184, 131399580232706416, 0, 140159403458656, 140736960140080, 4096, -62934823395137168, -63022554640946832}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007f7965080e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 1 (LWP 3661):
#0  0x00007f7965bb71a9 in g_object_ref (_object=0x1) at /build/buildd/glib2.0-2.36.0/./gobject/gobject.c:2884
        __inst = 0x1
        __r = <optimized out>
        _g_boolean_var_ = <optimized out>
        object = 0x1
        old_val = <optimized out>
        __PRETTY_FUNCTION__ = "g_object_ref"
#1  0x00007f7927d2de6e in tp_proxy_pending_call_cancel (pc=0x7f796856faa0) at proxy-methods.c:340
        iface_proxy = 0x7fffe0841370
        __PRETTY_FUNCTION__ = "tp_proxy_pending_call_cancel"
#2  0x00007f7927ca84b1 in tp_connection_invalidated (self=0x7f79685a8040) at connection.c:1297
        __PRETTY_FUNCTION__ = "tp_connection_invalidated"
#3  0x00007f7961bbbc18 in ffi_call_unix64 () at ../src/x86/unix64.S:76
No locals.
#4  0x00007f7961bbb580 in ffi_call (cif=cif@entry=0x7fffe0841590, fn=fn@entry=0x7f7927ca8470 <tp_connection_invalidated>, rvalue=0x7fffe08414f0, avalue=avalue@entry=0x7fffe0841470) at ../src/x86/ffi64.c:522
        classes = {X86_64_INTEGER_CLASS, 32767, 3766752528, 32767}
        stack = 0x7fffe08412c0 ""
        argp = 0x7fffe0841370 ""
        arg_types = 0x7fffe08414b0
        gprcount = 5
        ssecount = <optimized out>
        ngpr = 1
        nsse = 0
        i = <optimized out>
        avn = <optimized out>
        ret_in_memory = <optimized out>
        reg_args = 0x7fffe08412c0
#5  0x00007f7965bb2f7b in g_cclosure_marshal_generic (closure=0x7f7968562460, return_gvalue=0x0, n_param_values=<optimized out>, param_values=<optimized out>, invocation_hint=<optimized out>, marshal_data=0x7f7927ca8470 <tp_connection_invalidated>) at /build/buildd/glib2.0-2.36.0/./gobject/gclosure.c:1454
        rtype = <optimized out>
        rvalue = 0x7fffe08414f0
        n_args = 5
        atypes = 0x7fffe08414b0
        args = 0x7fffe0841470
        i = <optimized out>
        cif = {abi = FFI_UNIX64, nargs = 5, arg_types = 0x7fffe08414b0, rtype = 0x7f7961bbc000 <ffi_type_void>, bytes = 0, flags = 0}
        cc = 0x7f7968562460
        enum_tmpval = 0x7fffe0841510
        tmpval_used = 0
#6  0x00007f7965bb2620 in g_closure_invoke (closure=0x7f7968562460, return_value=0x0, n_param_values=4, param_values=0x7fffe08417d0, invocation_hint=0x7fffe0841770) at /build/buildd/glib2.0-2.36.0/./gobject/gclosure.c:777
        marshal = 0x7f7965bb2d80 <g_cclosure_marshal_generic>
        marshal_data = 0x0
        in_marshal = 0
        real_closure = 0x7f7968562440
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#7  0x00007f7965bc3d09 in signal_emit_unlocked_R (node=node@entry=0x7f796844ce20, detail=detail@entry=0, instance=instance@entry=0x7f79685a8040, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fffe08417d0) at /build/buildd/glib2.0-2.36.0/./gobject/gsignal.c:3654
        tmp = <optimized out>
        handler = 0x7f7950010840
        accumulator = 0x0
        emission = {next = 0x0, instance = 0x7f79685a8040, ihint = {signal_id = 323, detail = 0, run_type = G_SIGNAL_RUN_LAST}, state = EMISSION_RUN, chain_type = 4}
        class_closure = 0x0
        hlist = 0x7f7950010840
        handler_list = 0x7f7950010840
        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 = 323
        max_sequential_handler_number = 1544
        return_value_altered = 1
#8  0x00007f7965bcbd11 in g_signal_emit_valist (instance=0x7f79685a8040, signal_id=<optimized out>, detail=0, var_args=var_args@entry=0x7fffe0841a58) at /build/buildd/glib2.0-2.36.0/./gobject/gsignal.c:3328
        instance_and_params = 0x7fffe08417d0
        signal_return_type = 4
        param_values = 0x7fffe08417e8
        node = 0x7f796844ce20
        i = <optimized out>
        n_params = 3
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#9  0x00007f7965bcbf92 in g_signal_emit (instance=instance@entry=0x7f79685a8040, signal_id=<optimized out>, detail=detail@entry=0) at /build/buildd/glib2.0-2.36.0/./gobject/gsignal.c:3384
        var_args = {{gp_offset = 48, fp_offset = 48, overflow_arg_area = 0x7fffe0841b30, reg_save_area = 0x7fffe0841a70}}
#10 0x00007f7927d2c0ab in tp_proxy_emit_invalidated (p=<optimized out>) at proxy.c:613
        self = 0x7f79685a8040
        __PRETTY_FUNCTION__ = "tp_proxy_emit_invalidated"
#11 0x00007f79658eef05 in g_main_dispatch (context=0x7f7967e6fdf0) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3054
        dispatch = 0x7f79658ebca0 <g_idle_dispatch>
        was_in_call = 0
        user_data = 0x7f79685a8040
        callback = 0x7f7927d2c070 <tp_proxy_emit_invalidated>
        cb_funcs = 0x7f7965ba0a00 <g_source_callback_funcs>
        cb_data = 0x7f796857f670
        current_source_link = {data = 0x7f796857c600, next = 0x0}
        need_destroy = <optimized out>
        source = 0x7f796857c600
        current = 0x7f7967eaf8c0
        i = <optimized out>
#12 g_main_context_dispatch (context=context@entry=0x7f7967e6fdf0) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3630
No locals.
#13 0x00007f79658ef248 in g_main_context_iterate (context=context@entry=0x7f7967e6fdf0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3701
        max_priority = -100
        timeout = 0
        some_ready = 1
        allocated_nfds = <optimized out>
        fds = 0x7f7968310f10
        nfds = <optimized out>
#14 0x00007f79658ef304 in g_main_context_iteration (context=0x7f7967e6fdf0, context@entry=0x0, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.36.0/./glib/gmain.c:3762
        retval = <optimized out>
#15 0x00007f7965e8f52c in g_application_run (application=0x7f79580068c0, argc=argc@entry=2, argv=argv@entry=0x7fffe0841dd8) at /build/buildd/glib2.0-2.36.0/./gio/gapplication.c:1623
        arguments = 0x7f79682fbb80
        status = 1742899808
        i = <optimized out>
        __PRETTY_FUNCTION__ = "g_application_run"
#16 0x00007f79677512ba in main (argc=2, argv=0x7fffe0841dd8) at control-center.c:263
        shell = <optimized out>
        application = 0x7f79580068c0
        status = <optimized out>