.
Thread 4 (LWP 2701):
#0  0x00007ff28cc983dd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007ff28cfba394 in g_main_context_iterate (context=0x1e787f0, block=-1929605072, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.37.5/./glib/gmain.c:3692
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = <optimized out>
        allocated_nfds = 1
        fds = 0x7ff2800010e0
#2  0x00007ff28cfba49c in g_main_context_poll (priority=-2048922979, n_fds=1, fds=0x0, timeout=-1875599264, context=0x1e787f0) at /build/buildd/glib2.0-2.37.5/./glib/gmain.c:4009
        poll_func = 0x7fff80deb1a0
#3  g_main_context_iterate (context=0x1e787f0, block=<optimized out>, dispatch=0, self=<optimized out>) at /build/buildd/glib2.0-2.37.5/./glib/gmain.c:3707
        max_priority = -2048922979
        timeout = 32754
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 4096
        fds = 0x0
#4  0x3bb97880fbdc986d in ?? ()
No symbol table info available.
#5  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 3 (LWP 2711):
#0  0x00007ff28cc983dd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007ff28cfba394 in g_main_context_iterate (context=0x1ebe030, block=-1929605072, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.37.5/./glib/gmain.c:3692
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = <optimized out>
        allocated_nfds = 1
        fds = 0x7ff27c0008c0
#2  0x00007ff28cfba49c in g_main_context_poll (priority=-1929665303, n_fds=1, fds=0x7ff28d271000 <unix_signal_refcount+128>, timeout=0, context=0x1ebe030) at /build/buildd/glib2.0-2.37.5/./glib/gmain.c:4009
        poll_func = 0x1ffdcf0
#3  g_main_context_iterate (context=0x1ebe030, block=<optimized out>, dispatch=0, self=<optimized out>) at /build/buildd/glib2.0-2.37.5/./glib/gmain.c:3707
        max_priority = -1929665303
        timeout = 32754
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 4096
        fds = 0x7ff28d271000 <unix_signal_refcount+128>
#4  0x00007ff28cfdec25 in g_test_get_filename (file_type=(unknown: 2080377024), first_path=0x1 <Address 0x1 out of bounds>) at /build/buildd/glib2.0-2.37.5/./glib/gtestutils.c:3081
        result = <optimized out>
        node = <optimized out>
        ap = {{gp_offset = 2352410478, fp_offset = 32754, overflow_arg_area = 0x0, reg_save_area = 0x7ff284df5700}}
        __FUNCTION__ = "g_test_get_filename"
#5  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (LWP 2704):
#0  0x00007ff28cc983dd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007ff28cfba394 in g_main_context_iterate (context=0x7ff28000ef30, block=-1929605072, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.37.5/./glib/gmain.c:3692
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = <optimized out>
        allocated_nfds = 5
        fds = 0x7ff278001170
#2  0x00007ff28cfba7fa in g_main_loop_unref (loop=0x7ff278001170) at /build/buildd/glib2.0-2.37.5/./glib/gmain.c:3839
        _g_boolean_var_ = <optimized out>
#3  0x00007ff290317a00 in ?? ()
No symbol table info available.
#4  0x00007ff28000ef00 in ?? ()
No symbol table info available.
#5  0x00007ff28d595646 in _g_dbus_worker_do_read_cb (input_stream=<optimized out>, res=<optimized out>, user_data=0x0) at /build/buildd/glib2.0-2.37.5/./gio/gdbusprivate.c:656
        n = -1875599264
        worker = 0x0
        error = 0x3bb97880fbdc986d
        bytes_read = 140679711223662
#6  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (LWP 2478):
#0  0x00007ff28d286b04 in g_object_new_internal (class=0x1e454e8, params=0x1e83340, n_params=32871680) at /build/buildd/glib2.0-2.37.5/./gobject/gobject.c:1751
        node = <optimized out>
        nqueue = 0xaaaaaaaaaaaaaaaa
        object = 0x1e2bfb0
        __FUNCTION__ = "g_object_new_internal"
#1  0x00007ff28cfba0a6 in g_main_dispatch (context=0x1e81bc0) at /build/buildd/glib2.0-2.37.5/./glib/gmain.c:3015
        source = 0x0
        current = 0x1e48640
        i = 0
#2  g_main_context_dispatch (context=0x1e81bc0) at /build/buildd/glib2.0-2.37.5/./glib/gmain.c:3641
No locals.
#3  0x00007ff28cfba3f8 in g_main_context_poll (priority=0, n_fds=1, fds=0x20098f0, timeout=0, context=0x1e48640) at /build/buildd/glib2.0-2.37.5/./glib/gmain.c:3990
        poll_func = <optimized out>
#4  g_main_context_iterate (context=0x1e48640, block=-1929605072, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.37.5/./glib/gmain.c:3707
        max_priority = 0
        timeout = 0
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 13
        fds = 0x20098f0
#5  0x00007ff28cfba7fa in g_main_loop_unref (loop=0x1f59500) at /build/buildd/glib2.0-2.37.5/./glib/gmain.c:3839
        _g_boolean_var_ = <optimized out>
#6  0x00007ff2903199e8 in ?? ()
No symbol table info available.
#7  0x0000000001ec5ac0 in ?? ()
No symbol table info available.
#8  0x00007ff28e59b365 in gtk_main () at /build/buildd/gtk+3.0-3.8.2/./gtk/gtkmain.c:1156
        loop = 0x19
#9  0x000000000040b247 in main (argc=1, argv=0x7fff80debe68) at main.c:405
        error = 0x0
        display_str = <optimized out>
        manager = 0x1e8a100
        client_store = 0x1e7d470
        override_autostart_dirs = 0x0
        opt_session_name = 0x1e11e90 "ubuntu"
        session_name = 0x1e11e90 "ubuntu"
        gl_failed = 0
        entries = {{long_name = 0x42a2c1 "autostart", short_name = 97 'a', flags = 0, arg = G_OPTION_ARG_STRING_ARRAY, arg_data = 0x6392e8 <override_autostart_dirs.50337>, description = 0x42a4e0 "Override standard autostart directories", arg_description = 0x42a2cb "AUTOSTART_DIR"}, {long_name = 0x4288c3 "session", short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_STRING, arg_data = 0x6392f0 <opt_session_name.50338>, description = 0x42a2d9 "Session to use", arg_description = 0x42a2e8 "SESSION_NAME"}, {long_name = 0x42a2f5 "debug", short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x639304 <debug>, description = 0x42a2fb "Enable debugging code", arg_description = 0x0}, {long_name = 0x42a311 "failsafe", short_name = 102 'f', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x63930c <failsafe>, description = 0x42a508 "Do not load user-specified applications", arg_description = 0x0}, {long_name = 0x42a31a "version", short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x639308 <show_version>, description = 0x42a322 "Version of this application", arg_description = 0x0}, {long_name = 0x42a33e "whale", short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x639300 <please_fail>, description = 0x42a530 "Show the fail whale dialog for testing", arg_description = 0x0}, {long_name = 0x0, short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x0, description = 0x0, arg_description = 0x0}}