.
Thread 4 (Thread 0x7f2b9a25c700 (LWP 9257)):
#0  0x00007f2ba2306d93 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  0x00007f2ba2f98136 in g_main_context_poll (n_fds=3, fds=0x7f2b8c0010c0, timeout=-1, context=0x7f2b940098c0, priority=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3412
        poll_func = 0x7f2ba2fa50b0 <g_poll>
#2  g_main_context_iterate (dispatch=1, block=<optimized out>, context=0x7f2b940098c0, self=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3113
        timeout = -1
        some_ready = <optimized out>
        fds = 0x7f2b8c0010c0
        max_priority = 2147483647
        nfds = 3
        allocated_nfds = <optimized out>
#3  g_main_context_iterate (context=0x7f2b940098c0, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3055
        some_ready = -1946152768
#4  0x00007f2ba2f9859a in g_main_loop_run (loop=0x7f2b94009870) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3312
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#5  0x00007f2ba39d2426 in g_dbus_proxy_set_property (object=0x0, prop_id=<optimized out>, value=0x7f2b9aa5ca20, pspec=0x0) at /build/buildd/glib2.0-2.31.20/./gio/gdbusproxy.c:326
        proxy = 0x7f2b9a25c9c0
#6  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 3 (Thread 0x7f2b99853700 (LWP 9258)):
#0  0x00007f2ba2306d93 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  0x00007f2ba2f98136 in g_main_context_poll (n_fds=1, fds=0x7f2b900010e0, timeout=-1, context=0x18c7ea0, priority=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3412
        poll_func = 0x7f2ba2fa50b0 <g_poll>
#2  g_main_context_iterate (dispatch=1, block=<optimized out>, context=0x18c7ea0, self=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3113
        timeout = -1
        some_ready = <optimized out>
        fds = 0x7f2b900010e0
        max_priority = 2147483647
        nfds = 1
        allocated_nfds = <optimized out>
#3  g_main_context_iterate (context=0x18c7ea0, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3055
        some_ready = -1879043872
#4  0x00007f2ba2f9859a in g_main_loop_run (loop=0x7f2b900010c0) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3312
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#5  0x00007f2b9985896b in ?? () from /tmp/tmpmY3bQV/usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
No symbol table info available.
#6  0x00007f2b8c003de0 in ?? ()
No symbol table info available.
#7  0x00007f2ba2fb97f5 in g_thread_proxy (data=0x18c7ea0) at /build/buildd/glib2.0-2.31.20/./glib/gthread.c:801
        thread = 0x18c7ea0
#8  0x00007f2ba25e4e9a in start_thread (arg=0x7f2b99853700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7f2b99853700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -3728331445559813295, 140736562014960, 139825235966400, 0, 3, 3608928422964566865, 3608802708133059409}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#9  0x00007f2ba231274d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#10 0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (Thread 0x7f2b89f24700 (LWP 9261)):
#0  0x00007f2ba2306d93 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  0x00007f2ba2f98136 in g_main_context_poll (n_fds=1, fds=0x7f2b840008c0, timeout=-1, context=0x1b6b830, priority=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3412
        poll_func = 0x7f2ba2fa50b0 <g_poll>
#2  g_main_context_iterate (dispatch=1, block=<optimized out>, context=0x1b6b830, self=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3113
        timeout = -1
        some_ready = <optimized out>
        fds = 0x7f2b840008c0
        max_priority = 2147483647
        nfds = 1
        allocated_nfds = <optimized out>
#3  g_main_context_iterate (context=0x1b6b830, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3055
        some_ready = -2080372544
#4  0x00007f2ba2f98264 in g_main_context_iteration (context=0x1b6b830, may_block=1) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3179
        retval = <optimized out>
#5  0x00007f2ba2f982b1 in glib_worker_main (data=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:4851
No locals.
#6  0x00007f2ba2fb97f5 in g_thread_proxy (data=0x1abe370) at /build/buildd/glib2.0-2.31.20/./glib/gthread.c:801
        thread = 0x1abe370
#7  0x00007f2ba25e4e9a in start_thread (arg=0x7f2b89f24700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7f2b89f24700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -3728331445559813295, 140736562015792, 139824974678464, 0, 3, 3608893660036143953, 3608802708133059409}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#8  0x00007f2ba231274d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#9  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 0x7f2ba5294980 (LWP 9255)):
#0  g_type_check_instance_cast (type_instance=0x1d00c20, iface_type=26170992) at /build/buildd/glib2.0-2.31.20/./gobject/gtype.c:3999
        node = 0x7fffc8c91ca0
        iface = 0x0
        is_instantiatable = <optimized out>
        check = <optimized out>
#1  0x00007f2b983594d3 in ?? ()
No symbol table info available.
#2  0x0000000000000001 in ?? ()
No symbol table info available.
#3  0x00007f2ba327aa75 in g_value_peek_pointer (value=0x1d00c20) at /build/buildd/glib2.0-2.31.20/./gobject/gvalue.c:317
        value_table = <optimized out>
        __PRETTY_FUNCTION__ = "g_value_peek_pointer"
#4  0x00000000004123f0 in gtk_window_set_modal@plt ()
No symbol table info available.
#5  0x0000000000000001 in ?? ()
No symbol table info available.
#6  0x0000000000000000 in ?? ()
No symbol table info available.