Comment 2 for bug 1229178

StacktraceTop:
 bus_dbus_impl_dispatch_message_by_rule (dbus=dbus@entry=0x1742030, message=message@entry=0x7f4640004b70, skip_connection=skip_connection@entry=0x1795470) at dbusimpl.c:1901
 bus_dbus_impl_connection_filter_cb (dbus_connection=<optimized out>, message=0x7f4640004b70, incoming=<optimized out>, user_data=0x1742030) at dbusimpl.c:1578
 on_worker_message_about_to_be_sent (worker=<optimized out>, message=0x7f4640004b20, user_data=<optimized out>) at /build/buildd/glib2.0-2.37.93/./gio/gdbusconnection.c:2426
 _g_dbus_worker_emit_message_about_to_be_sent (message=0x7f4640004b20, worker=0x7f4648003a70) at /build/buildd/glib2.0-2.37.93/./gio/gdbusprivate.c:502
 continue_writing (worker=0x7f4648003a70) at /build/buildd/glib2.0-2.37.93/./gio/gdbusprivate.c:1496