########################################################################
# first GDB attach
########################################################################

Thread 4 (process 6454, thread 0x20194b000):
#0  0x000000020465160a in open () from /usr/lib/libc.so.60.1
#1  0x00000002135dd90b in open (path=0x205ae3680 "/etc/localtime", flags=0) at /usr/src/lib/libpthread/uthread/uthread_open.c:63
#2  0x00000002124d72da in g_mapped_file_new (filename=0x205ae3680 "/etc/localtime", writable=0, error=0x0) at gmappedfile.c:154
#3  0x00000002124fdd68 in g_time_zone_new (identifier=0x0) at gtimezone.c:382
#4  0x00000002124bf8f3 in g_date_time_new_now_local () at gdatetime.c:728
#5  0x0000000202beea50 in update_clock (data=Variable "data" is not available.
) at gnome-wall-clock.c:176
#6  0x0000000202befa42 in g_datetime_source_dispatch (source=Variable "source" is not available.
) at gnome-datetime-source.c:142
#7  0x00000002124d31d5 in g_main_context_dispatch (context=0x203420900) at gmain.c:2445
#8  0x00000002124d6a7c in g_main_context_iterate (context=0x203420900, block=1, dispatch=1, self=Variable "self" is not available.
) at gmain.c:3093
#9  0x00000002124d6f9e in g_main_context_iteration (context=0x203420900, may_block=1) at gmain.c:3156
#10 0x0000000200b37e55 in gtk_main_iteration () from /usr/local/lib/libgtk-3.so.1.0
#11 0x000000000040e159 in gs_manager_set_active (manager=0x20ded6090, active=Variable "active" is not available.
) at gs-manager.c:1275
#12 0x000000000040a198 in listener_active_changed_cb (listener=Variable "listener" is not available.
) at gs-monitor.c:236
#13 0x0000000000417512 in gs_marshal_BOOLEAN__BOOLEAN (closure=0x20636cdc0, return_value=0x7f7ffffe14e0, n_param_values=Variable "n_param_values" is not available.
)
    at gs-marshal.c:161
#14 0x000000020647e399 in g_closure_invoke (closure=0x20636cdc0, return_value=0x7f7ffffe14e0, n_param_values=2, 
    param_values=0x2068c1090, invocation_hint=0x7f7ffffe1340) at gclosure.c:774
#15 0x0000000206494ba4 in signal_emit_unlocked_R (node=0x203443200, detail=0, instance=0x20d5c0500, 
    emission_return=0x7f7ffffe14e0, instance_and_params=0x2068c1090) at gsignal.c:3272
#16 0x000000020649660b in g_signal_emit_valist (instance=0x20d5c0500, signal_id=Variable "signal_id" is not available.
) at gsignal.c:3013
#17 0x0000000206496d03 in g_signal_emit (instance=Variable "instance" is not available.
) at gsignal.c:3060
#18 0x000000000040bccf in gs_listener_set_active (listener=0x20d5c0500, active=1) at gs-listener-dbus.c:253
#19 0x000000000040a2b8 in listener_lock_cb (listener=Variable "listener" is not available.
) at gs-monitor.c:176
#20 0x000000020647e399 in g_closure_invoke (closure=0x20636c980, return_value=0x0, n_param_values=1, param_values=0x20b65c780, 
    invocation_hint=0x7f7ffffe1900) at gclosure.c:774
#21 0x0000000206494ba4 in signal_emit_unlocked_R (node=0x203443500, detail=0, instance=0x20d5c0500, emission_return=0x0, 
    instance_and_params=0x20b65c780) at gsignal.c:3272
#22 0x000000020649694b in g_signal_emit_valist (instance=0x20d5c0500, signal_id=Variable "signal_id" is not available.
) at gsignal.c:3003
#23 0x0000000206496d03 in g_signal_emit (instance=Variable "instance" is not available.
) at gsignal.c:3060
#24 0x000000000040c226 in listener_dbus_handle_session_message (connection=0x201214a00, message=0x208570300, 
    user_data=0x20d5c0500, local_interface=Variable "local_interface" is not available.
) at gs-listener-dbus.c:703
#25 0x000000020529aabf in dbus_connection_dispatch () from /usr/local/lib/libdbus-1.so.9.1
#26 0x00000002090ba345 in dbus_server_setup_with_g_main () from /usr/local/lib/libdbus-glib-1.so.4.3
#27 0x00000002124d31d5 in g_main_context_dispatch (context=0x203420900) at gmain.c:2445
#28 0x00000002124d6a7c in g_main_context_iterate (context=0x203420900, block=1, dispatch=1, self=Variable "self" is not available.
) at gmain.c:3093
#29 0x00000002124d6d9a in g_main_loop_run (loop=0x20e7aa130) at gmain.c:3301
#30 0x0000000200b37f5d in gtk_main () from /usr/local/lib/libgtk-3.so.1.0
#31 0x0000000000409aaf in main (argc=1, argv=0x7f7ffffe2130) at gnome-screensaver.c:105

Thread 3 (process 6454, thread 0x204f39000):
#0  _thread_kern_sched (scp=0x0) at /usr/src/lib/libpthread/uthread/uthread_kern.c:496
---Type <return> to continue, or q <return> to quit---
#1  0x00000002135da2e0 in poll (fds=0x20ce67700, nfds=Variable "nfds" is not available.
) at /usr/src/lib/libpthread/uthread/uthread_poll.c:94
#2  0x00000002124d6a97 in g_main_context_iterate (context=0x20a9a6200, block=1, dispatch=1, self=Variable "self" is not available.
) at gmain.c:3406
#3  0x00000002124d6d9a in g_main_loop_run (loop=0x20ce67b30) at gmain.c:3301
#4  0x0000000217c790cb in ?? () from /usr/local/lib/gio/modules/libdconfsettings.so
#5  0x00000002124fad94 in g_thread_create_proxy (data=0x20bcae000) at gthread.c:1962
#6  0x00000002135ddd0d in _thread_start () at /usr/src/lib/libpthread/uthread/uthread_create.c:242
#7  0x000000000000002b in ?? ()
Cannot access memory at address 0x207137000

########################################################################
# second GDB attach
########################################################################

Thread 4 (process 6454, thread 0x20194b000):
#0  0x00000002046647fa in msync () from /usr/lib/libc.so.60.1
#1  0x00000002135db16d in msync (addr=0x204f30000, len=1, flags=4) at /usr/src/lib/libpthread/uthread/uthread_msync.c:21
#2  0x0000000217c77572 in ?? () from /usr/local/lib/gio/modules/libdconfsettings.so
#3  0x0000000217c77ed1 in ?? () from /usr/local/lib/gio/modules/libdconfsettings.so
#4  0x0000000217c7a18c in g_io_module_load () from /usr/local/lib/gio/modules/libdconfsettings.so
#5  0x000000020da2a4ca in g_settings_backend_read (backend=Variable "backend" is not available.
) at gsettingsbackend.c:732
#6  0x000000020da2d72c in g_settings_read_from_backend (info=0x7f7ffffe0e10) at gsettings.c:1110
#7  0x000000020da2fef6 in g_settings_get_value (settings=Variable "settings" is not available.
) at gsettings.c:1293
#8  0x000000020da2ffd3 in g_settings_get_boolean (settings=Variable "settings" is not available.
) at gsettings.c:1986
#9  0x0000000202beea48 in update_clock (data=Variable "data" is not available.
) at gnome-wall-clock.c:174
#10 0x0000000202befa42 in g_datetime_source_dispatch (source=Variable "source" is not available.
) at gnome-datetime-source.c:142
#11 0x00000002124d31d5 in g_main_context_dispatch (context=0x203420900) at gmain.c:2445
#12 0x00000002124d6a7c in g_main_context_iterate (context=0x203420900, block=1, dispatch=1, self=Variable "self" is not available.
) at gmain.c:3093
#13 0x00000002124d6f9e in g_main_context_iteration (context=0x203420900, may_block=1) at gmain.c:3156
#14 0x0000000200b37e55 in gtk_main_iteration () from /usr/local/lib/libgtk-3.so.1.0
#15 0x000000000040e159 in gs_manager_set_active (manager=0x20ded6090, active=Variable "active" is not available.
) at gs-manager.c:1275
#16 0x000000000040a198 in listener_active_changed_cb (listener=Variable "listener" is not available.
) at gs-monitor.c:236
#17 0x0000000000417512 in gs_marshal_BOOLEAN__BOOLEAN (closure=0x20636cdc0, return_value=0x7f7ffffe14e0, n_param_values=Variable "n_param_values" is not available.
)
    at gs-marshal.c:161
#18 0x000000020647e399 in g_closure_invoke (closure=0x20636cdc0, return_value=0x7f7ffffe14e0, n_param_values=2, 
    param_values=0x2068c1090, invocation_hint=0x7f7ffffe1340) at gclosure.c:774
#19 0x0000000206494ba4 in signal_emit_unlocked_R (node=0x203443200, detail=0, instance=0x20d5c0500, 
    emission_return=0x7f7ffffe14e0, instance_and_params=0x2068c1090) at gsignal.c:3272
#20 0x000000020649660b in g_signal_emit_valist (instance=0x20d5c0500, signal_id=Variable "signal_id" is not available.
) at gsignal.c:3013
#21 0x0000000206496d03 in g_signal_emit (instance=Variable "instance" is not available.
) at gsignal.c:3060
#22 0x000000000040bccf in gs_listener_set_active (listener=0x20d5c0500, active=1) at gs-listener-dbus.c:253
#23 0x000000000040a2b8 in listener_lock_cb (listener=Variable "listener" is not available.
) at gs-monitor.c:176
#24 0x000000020647e399 in g_closure_invoke (closure=0x20636c980, return_value=0x0, n_param_values=1, param_values=0x20b65c780, 
    invocation_hint=0x7f7ffffe1900) at gclosure.c:774
#25 0x0000000206494ba4 in signal_emit_unlocked_R (node=0x203443500, detail=0, instance=0x20d5c0500, emission_return=0x0, 
    instance_and_params=0x20b65c780) at gsignal.c:3272
#26 0x000000020649694b in g_signal_emit_valist (instance=0x20d5c0500, signal_id=Variable "signal_id" is not available.
) at gsignal.c:3003
#27 0x0000000206496d03 in g_signal_emit (instance=Variable "instance" is not available.
) at gsignal.c:3060
#28 0x000000000040c226 in listener_dbus_handle_session_message (connection=0x201214a00, message=0x208570300, 
    user_data=0x20d5c0500, local_interface=Variable "local_interface" is not available.
) at gs-listener-dbus.c:703
#29 0x000000020529aabf in dbus_connection_dispatch () from /usr/local/lib/libdbus-1.so.9.1
#30 0x00000002090ba345 in dbus_server_setup_with_g_main () from /usr/local/lib/libdbus-glib-1.so.4.3
#31 0x00000002124d31d5 in g_main_context_dispatch (context=0x203420900) at gmain.c:2445
#32 0x00000002124d6a7c in g_main_context_iterate (context=0x203420900, block=1, dispatch=1, self=Variable "self" is not available.
) at gmain.c:3093
#33 0x00000002124d6d9a in g_main_loop_run (loop=0x20e7aa130) at gmain.c:3301
#34 0x0000000200b37f5d in gtk_main () from /usr/local/lib/libgtk-3.so.1.0
---Type <return> to continue, or q <return> to quit---
#35 0x0000000000409aaf in main (argc=1, argv=0x7f7ffffe2130) at gnome-screensaver.c:105

Thread 3 (process 6454, thread 0x204f39000):
#0  _thread_kern_sched (scp=0x0) at /usr/src/lib/libpthread/uthread/uthread_kern.c:496
#1  0x00000002135da2e0 in poll (fds=0x20ce67700, nfds=Variable "nfds" is not available.
) at /usr/src/lib/libpthread/uthread/uthread_poll.c:94
#2  0x00000002124d6a97 in g_main_context_iterate (context=0x20a9a6200, block=1, dispatch=1, self=Variable "self" is not available.
) at gmain.c:3406
#3  0x00000002124d6d9a in g_main_loop_run (loop=0x20ce67b30) at gmain.c:3301
#4  0x0000000217c790cb in ?? () from /usr/local/lib/gio/modules/libdconfsettings.so
#5  0x00000002124fad94 in g_thread_create_proxy (data=0x20bcae000) at gthread.c:1962
#6  0x00000002135ddd0d in _thread_start () at /usr/src/lib/libpthread/uthread/uthread_create.c:242
#7  0x000000000000002b in ?? ()
Cannot access memory at address 0x207137000
#0  0x00000002046647fa in msync () from /usr/lib/libc.so.60.1

