.
Thread 3 (Thread 0x7fcee6ba4700 (LWP 6975)):
#0  0x00007fcef0194773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = 0
        result = <optimized out>
#1  0x00007fcef04a2f68 in g_main_context_poll (n_fds=3, fds=0xc8dfe0, timeout=-1, context=0xc8cd80, priority=<optimized out>) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3402
        poll_func = 0x7fcef04b14c0 <g_poll>
#2  g_main_context_iterate (context=0xc8cd80, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3084
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 3
        allocated_nfds = <optimized out>
        fds = 0xc8dfe0
#3  0x00007fcef04a3792 in g_main_loop_run (loop=0xc8cd30) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3297
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#4  0x00007fcef11be516 in gdbus_shared_thread_func (user_data=0xc8cd50) at /build/buildd/glib2.0-2.30.0/./gio/gdbusprivate.c:276
        data = 0xc8cd50
#5  0x00007fcef04c82b6 in g_thread_create_proxy (data=0xc8ce70) at /build/buildd/glib2.0-2.30.0/./glib/gthread.c:1962
        thread = 0xc8ce70
        __PRETTY_FUNCTION__ = "g_thread_create_proxy"
#6  0x00007fceefc25efc in start_thread (arg=0x7fcee6ba4700) at pthread_create.c:304
        __res = <optimized out>
        pd = 0x7fcee6ba4700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -9007152551850363496, 140526634281120, 140526610958784, 0, 3, 8979587277824243096, 8979603700644361624}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        robust = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007fcef01a089d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (Thread 0x7fcee81e3700 (LWP 6973)):
#0  0x00007fcef0194773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = 0
        result = <optimized out>
#1  0x00007fcef04a2f68 in g_main_context_poll (n_fds=1, fds=0xc6a6a0, timeout=-1, context=0xc654a0, priority=<optimized out>) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3402
        poll_func = 0x7fcef04b14c0 <g_poll>
#2  g_main_context_iterate (context=0xc654a0, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3084
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0xc6a6a0
#3  0x00007fcef04a3792 in g_main_loop_run (loop=0xc6a630) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3297
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#4  0x00007fcee94f29cb in dconf_context_thread (data=<optimized out>) at dconfcontext.c:11
        context = 0xc654a0
        loop = <optimized out>
        __PRETTY_FUNCTION__ = "dconf_context_thread"
#5  0x00007fcef04c82b6 in g_thread_create_proxy (data=0xc65590) at /build/buildd/glib2.0-2.30.0/./glib/gthread.c:1962
        thread = 0xc65590
        __PRETTY_FUNCTION__ = "g_thread_create_proxy"
#6  0x00007fceefc25efc in start_thread (arg=0x7fcee81e3700) at pthread_create.c:304
        __res = <optimized out>
        pd = 0x7fcee81e3700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -9007152551850363496, 140736557923008, 140526634285504, 0, 3, 8979608408526468504, 8979603700644361624}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        robust = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007fcef01a089d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 0x7fcef231b940 (LWP 6972)):
#0  0x0000000000405782 in panel_indicator_entry_accessible_get_n_children (accessible=<optimized out>) at /build/buildd/unity-4.22.0/services/panel-indicator-entry-accessible.c:256
        __inst = 0x7fced0164c40
        __t = 11950992
        __r = <optimized out>
        piea = <optimized out>
        __PRETTY_FUNCTION__ = "panel_indicator_entry_accessible_get_n_children"
#1  0x00007fcee8411d15 in append_children (traversal=0xc98340, accessible=0x11d7eb0) at ../../atk-adaptor/accessible-cache.c:233
        current = <optimized out>
        i = <optimized out>
#2  add_pending_items (data=<optimized out>) at ../../atk-adaptor/accessible-cache.c:289
        set = 0x7fcee0089a00
        cache = 0xd0e0c0
        current = 0x11d7eb0
        to_add = 0x7fcee013c600
#3  0x00007fcef04a2a5d in g_main_dispatch (context=0xb93e10) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:2441
        dispatch = 0x7fcef049e790 <g_idle_dispatch>
        was_in_call = 0
        user_data = 0xd0e0c0
        callback = 0x7fcee8411c40 <add_pending_items>
        cb_funcs = 0x7fcef0752670
        cb_data = 0x11afa40
        current_source_link = {data = 0x1139b00, next = 0x0}
        need_destroy = <optimized out>
        source = 0x1139b00
        current = 0x7fcee0008590
        i = <optimized out>
#4  g_main_context_dispatch (context=0xb93e10) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3011
No locals.
#5  0x00007fcef04a3258 in g_main_context_iterate (context=0xb93e10, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3089
        max_priority = 200
        timeout = 0
        some_ready = 1
        nfds = 6
        allocated_nfds = <optimized out>
        fds = <optimized out>
#6  0x00007fcef04a3792 in g_main_loop_run (loop=0xde7c40) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3297
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#7  0x00007fcef1a31e1d in gtk_main () at /build/buildd/gtk+3.0-3.2.0/./gtk/gtkmain.c:1367
        loop = 0xde7c40
#8  0x0000000000404367 in main (argc=1, argv=0x7fffc88ac028) at /build/buildd/unity-4.22.0/services/panel-main.c:395
        service = 0xc6f000
        owner_id = 2
        __PRETTY_FUNCTION__ = "main"