.
Thread 4 (Thread 0x7fb72608d700 (LWP 2230)):
#0  0x00007fb72f108bf9 in __GI___poll (fds=0x55ef57f72920, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
        sc_ret = <optimized out>
#1  0x00007fb72f989439 in g_main_context_poll (priority=<optimized out>, n_fds=2, fds=0x55ef57f72920, timeout=<optimized out>, context=0x55ef57f72650) at ../../../../glib/gmain.c:4204
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7fb72f998c80 <g_poll>
        poll_func = <optimized out>
        ret = <optimized out>
        errsv = <optimized out>
#2  g_main_context_iterate (context=context@entry=0x55ef57f72650, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3898
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = 2
        fds = 0x55ef57f72920
#3  0x00007fb72f98954c in g_main_context_iteration (context=0x55ef57f72650, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3964
        retval = <optimized out>
#4  0x00007fb72f989591 in glib_worker_main (data=<optimized out>) at ../../../../glib/gmain.c:5773
No locals.
#5  0x00007fb72f9b0e05 in g_thread_proxy (data=0x55ef57f15000) at ../../../../glib/gthread.c:784
        thread = 0x55ef57f15000
        _g_boolean_var_ = <optimized out>
#6  0x00007fb72f3ec6db in start_thread (arg=0x7fb72608d700) at pthread_create.c:463
        pd = 0x7fb72608d700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140424593856256, -3709390304399544010, 140424593853568, 0, 94486460977152, 140728657783216, 3741318361812611382, 3741303089013502262}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#7  0x00007fb72f11588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.
.
Thread 3 (Thread 0x7fb72588c700 (LWP 2231)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
No locals.
#1  0x00007fb72f9ce42c in g_mutex_unlock_slowpath (mutex=<optimized out>, prev=<optimized out>) at ../../../../glib/gthread-posix.c:1336
No locals.
#2  0x00007fb72f9cecfe in g_mutex_unlock (mutex=<optimized out>) at ../../../../glib/gthread-posix.c:1356
        prev = <optimized out>
#3  0x00007fb72ff63f90 in on_worker_message_received (worker=<optimized out>, message=<optimized out>, user_data=0x55ef57f371a0) at ../../../../gio/gdbusconnection.c:2306
        message_type = <optimized out>
        connection = 0x55ef57f371a0
        filters = <optimized out>
        n = <optimized out>
        alive = <optimized out>
        user_data = 0x55ef57f371a0
        message = 0x55ef58120400
        connection = <optimized out>
        reply_serial = <optimized out>
        filters = <optimized out>
        n = <optimized out>
        alive = <optimized out>
        message_type = <optimized out>
        task = <optimized out>
        worker = <optimized out>
        connection = <optimized out>
        filters = <optimized out>
        n = <optimized out>
        alive = <optimized out>
        message_type = <optimized out>
        reply_serial = <optimized out>
        task = <optimized out>
#4  0x00007fb72ff781a7 in _g_dbus_worker_queue_or_deliver_received_message (message=0x55ef58120400, worker=0x55ef57f82710) at ../../../../gio/gdbusprivate.c:510
No locals.
#5  _g_dbus_worker_do_read_cb (input_stream=<optimized out>, res=<optimized out>, user_data=0x55ef57f82710) at ../../../../gio/gdbusprivate.c:795
        message = 0x55ef58120400
        worker = 0x55ef57f82710
        error = 0x0
        bytes_read = <optimized out>
#6  0x00007fb72ff34073 in g_task_return_now (task=0x7fb710004e20) at ../../../../gio/gtask.c:1148
No locals.
#7  0x00007fb72ff340a9 in complete_in_idle_cb (task=0x7fb710004e20) at ../../../../gio/gtask.c:1162
No locals.
#8  0x00007fb72f9890f5 in g_main_dispatch (context=0x55ef57f82a20) at ../../../../glib/gmain.c:3177
        dispatch = 0x7fb72f985a80 <g_idle_dispatch>
        prev_source = 0x0
        was_in_call = 0
        user_data = 0x7fb710004e20
        callback = 0x7fb72ff340a0 <complete_in_idle_cb>
        cb_funcs = 0x7fb72fc51280 <g_source_callback_funcs>
        cb_data = 0x7fb718012f00
        need_destroy = <optimized out>
        source = 0x7fb718056eb0
        current = 0x55ef57f66f90
        i = 0
        current = <optimized out>
        i = <optimized out>
        source = <optimized out>
        _g_boolean_var_ = <optimized out>
        was_in_call = <optimized out>
        user_data = <optimized out>
        callback = <optimized out>
        cb_funcs = <optimized out>
        cb_data = <optimized out>
        need_destroy = <optimized out>
        dispatch = <optimized out>
        prev_source = <optimized out>
        _g_boolean_var_ = <optimized out>
#9  g_main_context_dispatch (context=context@entry=0x55ef57f82a20) at ../../../../glib/gmain.c:3830
No locals.
#10 0x00007fb72f9894c0 in g_main_context_iterate (context=0x55ef57f82a20, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3903
        max_priority = 0
        timeout = 0
        some_ready = 1
        nfds = <optimized out>
        allocated_nfds = 4
        fds = 0x7fb708002610
#11 0x00007fb72f9897d2 in g_main_loop_run (loop=0x55ef57f82b60) at ../../../../glib/gmain.c:4099
        self = <optimized out>
        __func__ = "g_main_loop_run"
#12 0x00007fb72ff75e16 in gdbus_shared_thread_func (user_data=0x55ef57f829f0) at ../../../../gio/gdbusprivate.c:275
        data = 0x55ef57f829f0
#13 0x00007fb72f9b0e05 in g_thread_proxy (data=0x55ef57f150a0) at ../../../../glib/gthread.c:784
        thread = 0x55ef57f150a0
        _g_boolean_var_ = <optimized out>
#14 0x00007fb72f3ec6db in start_thread (arg=0x7fb72588c700) at pthread_create.c:463
        pd = 0x7fb72588c700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140424585463552, -3709390304399544010, 140424585460864, 0, 94486460977312, 140728657783600, 3741315064888340790, 3741303089013502262}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#15 0x00007fb72f11588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.
.
Thread 2 (Thread 0x7fb717fff700 (LWP 2238)):
#0  __GI___libc_free (mem=0x55ef58003270) at malloc.c:3086
        ar_ptr = <optimized out>
        p = <optimized out>
        hook = <optimized out>
        __x = <optimized out>
#1  0x00007fb72f98655c in g_source_destroy_internal (source=0x55ef58199d40, context=0x55ef57fcd370, have_lock=1) at ../../../../glib/gmain.c:1236
        tmp_list = <optimized out>
        old_cb_data = 0x55ef58003270
        old_cb_funcs = 0x7fb72fc51280 <g_source_callback_funcs>
#2  0x00007fb72f989180 in g_main_dispatch (context=0x55ef57fcd370) at ../../../../glib/gmain.c:3201
        dispatch = 0x7fb72f985a80 <g_idle_dispatch>
        prev_source = <optimized out>
        was_in_call = 0
        user_data = 0x55ef58441100
        callback = 0x7fb72447e210 <dconf_gdbus_method_call>
        cb_funcs = <optimized out>
        cb_data = 0x55ef58003270
        need_destroy = <optimized out>
        source = 0x55ef58199d40
        current = 0x7fb710001400
        i = 0
        current = <optimized out>
        i = <optimized out>
        source = <optimized out>
        _g_boolean_var_ = <optimized out>
        was_in_call = <optimized out>
        user_data = <optimized out>
        callback = <optimized out>
        cb_funcs = <optimized out>
        cb_data = <optimized out>
        need_destroy = <optimized out>
        dispatch = <optimized out>
        prev_source = <optimized out>
        _g_boolean_var_ = <optimized out>
#3  g_main_context_dispatch (context=context@entry=0x55ef57fcd370) at ../../../../glib/gmain.c:3830
No locals.
#4  0x00007fb72f9894c0 in g_main_context_iterate (context=context@entry=0x55ef57fcd370, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3903
        max_priority = 2147483647
        timeout = 25000
        some_ready = 1
        nfds = <optimized out>
        allocated_nfds = 1
        fds = 0x55ef580222f0
#5  0x00007fb72f98954c in g_main_context_iteration (context=context@entry=0x55ef57fcd370, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3964
        retval = <optimized out>
#6  0x00007fb72447e36d in dconf_gdbus_worker_thread (user_data=0x55ef57fcd370) at dconf-gdbus-thread.c:82
        context = 0x55ef57fcd370
#7  0x00007fb72f9b0e05 in g_thread_proxy (data=0x55ef57ef9590) at ../../../../glib/gthread.c:784
        thread = 0x55ef57ef9590
        _g_boolean_var_ = <optimized out>
#8  0x00007fb72f3ec6db in start_thread (arg=0x7fb717fff700) at pthread_create.c:463
        pd = 0x7fb717fff700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140424358393600, -3709390304399544010, 140424358390912, 0, 94486460863888, 140728657784048, 3741284937303372086, 3741303089013502262}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#9  0x00007fb72f11588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.
.
Thread 1 (Thread 0x7fb73415ea80 (LWP 2227)):
#0  g_hash_table_lookup_node (hash_return=<optimized out>, key=<optimized out>, hash_table=<optimized out>) at ../../../../glib/ghash.c:377
        _g_boolean_var_ = <optimized out>
        node_hash = <optimized out>
        hash_value = <optimized out>
        have_tombstone = <optimized out>
        step = <optimized out>
        node_index = <optimized out>
        first_tombstone = <optimized out>
        node_index = <optimized out>
        node_hash = <optimized out>
        hash_value = <optimized out>
        first_tombstone = <optimized out>
        have_tombstone = <optimized out>
        step = <optimized out>
        _g_boolean_var_ = <optimized out>
        _g_boolean_var_ = <optimized out>
        node_key = <optimized out>
#1  g_hash_table_lookup (hash_table=0x3ff0000000000000, key=key@entry=0x3) at ../../../../glib/ghash.c:1153
        node_index = <optimized out>
        node_hash = <optimized out>
        __func__ = "g_hash_table_lookup"
#2  0x000055ef55e9c909 in handle_ungrab_accelerator (dbus_shell=0x55ef58439ad0, invocation=0x7fb71c000c00, action=3, user_data=<optimized out>) at flashback-shell.c:377
        shell = <optimized out>
        sender = <optimized out>
        success = 0
#3  0x00007fb72a18adae in ffi_call_unix64 () at ../src/x86/unix64.S:76
No locals.
#4  0x00007fb72a18a71f in ffi_call (cif=cif@entry=0x7ffdf1a83750, fn=fn@entry=0x55ef55e9c8d0 <handle_ungrab_accelerator>, rvalue=<optimized out>, avalue=avalue@entry=0x7ffdf1a83660) at ../src/x86/ffi64.c:525
        classes = {X86_64_INTEGER_CLASS, X86_64_NO_CLASS, 4054333264, 32765}
        stack = <optimized out>
        argp = <optimized out>
        arg_types = <optimized out>
        gprcount = 4
        ssecount = <optimized out>
        ngpr = 1
        nsse = 0
        i = <optimized out>
        avn = <optimized out>
        ret_in_memory = <optimized out>
        reg_args = <optimized out>
#5  0x00007fb72fc63761 in g_cclosure_marshal_generic (closure=0x55ef584ec710, return_gvalue=0x7ffdf1a83920, n_param_values=<optimized out>, param_values=<optimized out>, invocation_hint=<optimized out>, marshal_data=<optimized out>) at ../../../../gobject/gclosure.c:1490
        rtype = <optimized out>
        rvalue = 0x7ffdf1a836c0
        n_args = 4
        atypes = <optimized out>
        args = <optimized out>
        i = <optimized out>
        cif = {abi = FFI_UNIX64, nargs = 4, arg_types = 0x7ffdf1a83690, rtype = 0x7fb72a18b0e0 <ffi_type_sint32>, bytes = 0, flags = 10}
        cc = 0x55ef584ec710
        enum_tmpval = <optimized out>
        tmpval_used = 0
#6  0x00007fb72fc62f6d in g_closure_invoke (closure=0x55ef584ec710, return_value=0x7ffdf1a83920, n_param_values=3, param_values=0x55ef58450610, invocation_hint=0x7ffdf1a83900) at ../../../../gobject/gclosure.c:804
        marshal = 0x7fb72fc63560 <g_cclosure_marshal_generic>
        marshal_data = 0x0
        in_marshal = 0
        real_closure = 0x55ef584ec6f0
        __func__ = "g_closure_invoke"
#7  0x00007fb72fc75d3e in signal_emit_unlocked_R (node=node@entry=0x55ef584b36d0, detail=detail@entry=0, instance=instance@entry=0x55ef58439ad0, emission_return=emission_return@entry=0x7ffdf1a83a50, instance_and_params=instance_and_params@entry=0x55ef58450610) at ../../../../gobject/gsignal.c:3635
        tmp = <optimized out>
        handler = 0x55ef583b6100
        accumulator = 0x55ef584eafb0
        emission = {next = 0x0, instance = 0x55ef58439ad0, ihint = {signal_id = 441, detail = 0, run_type = G_SIGNAL_RUN_FIRST}, state = EMISSION_RUN, chain_type = 4}
        class_closure = <optimized out>
        hlist = <optimized out>
        handler_list = 0x55ef583b6100
        return_accu = 0x7ffdf1a83920
        accu = {g_type = 20, 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 = 441
        max_sequential_handler_number = 3743
        return_value_altered = 0
#8  0x00007fb72fc7d960 in g_signal_emitv (instance_and_params=instance_and_params@entry=0x55ef58450610, signal_id=signal_id@entry=441, detail=detail@entry=0, return_value=return_value@entry=0x7ffdf1a83a50) at ../../../../gobject/gsignal.c:3129
        instance = 0x55ef58439ad0
        node = <optimized out>
        __func__ = "g_signal_emitv"
#9  0x000055ef55e9fb99 in _flashback_dbus_shell_skeleton_handle_method_call (connection=<optimized out>, sender=<optimized out>, object_path=<optimized out>, interface_name=0x7fb718045210 "org.gnome.Shell", method_name=0x7fb718037b40 "UngrabAccelerator", parameters=<optimized out>, invocation=0x7fb71c000c00, user_data=0x55ef58439ad0) at flashback-dbus-shell.c:3014
        skeleton = <optimized out>
        info = 0x55ef560eca40 <_flashback_dbus_shell_method_info_ungrab_accelerator>
        iter = {x = {140424359065760, 1, 1, 0, 94486462309696, 140424757367415, 0, 3579507750, 94486463103856, 94486463103856, 94486461427824, 1, 140424358747136, 140424757410281, 94486466361344, 14410650014155285248}}
        child = 0x0
        paramv = 0x55ef58450610
        num_params = <optimized out>
        num_extra = <optimized out>
        n = <optimized out>
        signal_id = 441
        return_value = {g_type = 20, 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}}}
        __func__ = "_flashback_dbus_shell_skeleton_handle_method_call"
#10 0x00007fb72ff7e3d7 in g_dbus_interface_method_dispatch_helper (interface=<optimized out>, method_call_func=0x55ef55e9f9e0 <_flashback_dbus_shell_skeleton_handle_method_call>, invocation=0x7fb71c000c00) at ../../../../gio/gdbusinterfaceskeleton.c:609
        has_handlers = <optimized out>
        has_default_class_handler = <optimized out>
        emit_authorized_signal = <optimized out>
        run_in_thread = <optimized out>
        flags = <optimized out>
        object = 0x0
        __func__ = "g_dbus_interface_method_dispatch_helper"
#11 0x00007fb72ff6659c in call_in_idle_cb (user_data=0x7fb71c000c00) at ../../../../gio/gdbusconnection.c:4851
        invocation = 0x7fb71c000c00
        vtable = <optimized out>
        registration_id = <optimized out>
        subtree_registration_id = <optimized out>
        __func__ = "call_in_idle_cb"
#12 0x00007fb72f9890f5 in g_main_dispatch (context=0x55ef57f1bbc0) at ../../../../glib/gmain.c:3177
        dispatch = 0x7fb72f985a80 <g_idle_dispatch>
        prev_source = 0x0
        was_in_call = 0
        user_data = 0x7fb71c000c00
        callback = 0x7fb72ff664b0 <call_in_idle_cb>
        cb_funcs = 0x7fb72fc51280 <g_source_callback_funcs>
        cb_data = 0x7fb71805b340
        need_destroy = <optimized out>
        source = 0x7fb718064fd0
        current = 0x55ef57f662a0
        i = 2
        current = <optimized out>
        i = <optimized out>
        source = <optimized out>
        _g_boolean_var_ = <optimized out>
        was_in_call = <optimized out>
        user_data = <optimized out>
        callback = <optimized out>
        cb_funcs = <optimized out>
        cb_data = <optimized out>
        need_destroy = <optimized out>
        dispatch = <optimized out>
        prev_source = <optimized out>
        _g_boolean_var_ = <optimized out>
#13 g_main_context_dispatch (context=context@entry=0x55ef57f1bbc0) at ../../../../glib/gmain.c:3830
No locals.
#14 0x00007fb72f9894c0 in g_main_context_iterate (context=0x55ef57f1bbc0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3903
        max_priority = 2147483647
        timeout = -1
        some_ready = 1
        nfds = <optimized out>
        allocated_nfds = 6
        fds = 0x55ef5841f4a0
#15 0x00007fb72f9897d2 in g_main_loop_run (loop=0x55ef57fc5e60) at ../../../../glib/gmain.c:4099
        self = <optimized out>
        __func__ = "g_main_loop_run"
#16 0x000055ef55e52387 in main (argc=<optimized out>, argv=<optimized out>) at gf-main.c:163
        session = 0x55ef58170e80