.
Thread 3 (Thread 0xb58ffb40 (LWP 2639)):
#0  0xb7702424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb6ae1380 in __GI___poll (fds=fds@entry=0xb4f00c68, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = -516
        result = <optimized out>
#2  0xb6d519bb in g_poll (fds=0xb4f00c68, nfds=1, timeout=-1) at /build/buildd/glib2.0-2.33.6/./glib/gpoll.c:132
No locals.
#3  0xb6d43210 in g_main_context_poll (n_fds=1, fds=0xb4f00c68, timeout=<optimized out>, context=0xb8599898, priority=<optimized out>) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:3560
        poll_func = <optimized out>
#4  g_main_context_iterate (context=context@entry=0xb8599898, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:3261
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0xb4f00c68
#5  0xb6d43371 in g_main_context_iteration (context=context@entry=0xb8599898, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:3327
        retval = <optimized out>
#6  0xb5a318b0 in dconf_gdbus_worker_thread (user_data=0xb8599898) at dconf-gdbus-thread.c:81
        context = 0xb8599898
#7  0xb6d67b33 in g_thread_proxy (data=0xb8597890) at /build/buildd/glib2.0-2.33.6/./glib/gthread.c:801
        thread = 0xb8597890
#8  0xb6bb0d4c in start_thread (arg=0xb58ffb40) at pthread_create.c:308
        __res = <optimized out>
        pd = 0xb58ffb40
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {-1229185036, 0, 4001536, -1248857368, -2127227365, -389337571}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#9  0xb6aeface in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
No locals.
.
Thread 2 (Thread 0xb62f2b40 (LWP 2638)):
#0  0xb7702424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb6ae1380 in __GI___poll (fds=fds@entry=0xb59076e8, nfds=nfds@entry=7, timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = -516
        result = <optimized out>
#2  0xb6d519bb in g_poll (fds=0xb59076e8, nfds=7, timeout=-1) at /build/buildd/glib2.0-2.33.6/./glib/gpoll.c:132
No locals.
#3  0xb6d43210 in g_main_context_poll (n_fds=7, fds=0xb59076e8, timeout=<optimized out>, context=0xb855a7b8, priority=<optimized out>) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:3560
        poll_func = <optimized out>
#4  g_main_context_iterate (context=0xb855a7b8, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:3261
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 7
        allocated_nfds = <optimized out>
        fds = 0xb59076e8
#5  0xb6d436eb in g_main_loop_run (loop=0xb855a780) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:3460
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#6  0xb6f2211a in gdbus_shared_thread_func (user_data=0xb855a7a0) at /build/buildd/glib2.0-2.33.6/./gio/gdbusprivate.c:277
        data = 0xb855a7a0
#7  0xb6d67b33 in g_thread_proxy (data=0xb857def0) at /build/buildd/glib2.0-2.33.6/./glib/gthread.c:801
        thread = 0xb857def0
#8  0xb6bb0d4c in start_thread (arg=0xb62f2b40) at pthread_create.c:308
        __res = <optimized out>
        pd = 0xb62f2b40
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {-1229185036, 0, 4001536, -1238424856, -1063971300, -389337571}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#9  0xb6aeface in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
No locals.
.
Thread 1 (Thread 0xb65e7840 (LWP 2637)):
#0  __strcmp_ia32 () at ../sysdeps/i386/i686/multiarch/../strcmp.S:39
No locals.
#1  0xb3c697dd in modem_get_all_cb (proxy=0xb88a2ec0, call=0x1, user_data=0xb8937870) at bt-widget.c:582
        iface_basename = 0x0
        modem_iface = <optimized out>
        info = 0xb8937870
        path = 0xb8af2730 "/org/freedesktop/ModemManager/Modems/0"
        properties = 0xb8ad5ac8
        error = 0x0
        value = 0xb8a74b18
        devtype = NM_DEVICE_TYPE_UNKNOWN
        __func__ = "modem_get_all_cb"
#2  0xb0df0a3d in d_pending_call_notify (dcall=0xb88c6608, data=0xb89e8c58) at dbus-gproxy.c:1836
        closure = 0xb89e8c58
#3  0xb663d681 in ?? () from /tmp/tmp5B9wZX/lib/i386-linux-gnu/libdbus-1.so.3
No symbol table info available.
#4  0xb6628a87 in ?? () from /tmp/tmp5B9wZX/lib/i386-linux-gnu/libdbus-1.so.3
No symbol table info available.
#5  0xb662c0ce in dbus_connection_dispatch () from /tmp/tmp5B9wZX/lib/i386-linux-gnu/libdbus-1.so.3
No symbol table info available.
#6  0xb0deaecd in message_queue_dispatch (source=source@entry=0xb89b1808, callback=0, user_data=0x0) at dbus-gmain.c:90
        connection = 0xb8a8db78
#7  0xb6d42ef3 in g_main_dispatch (context=0xb8557670) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:2691
        dispatch = 0xb0deaea0 <message_queue_dispatch>
        was_in_call = 0
        user_data = 0x0
        callback = 0
        cb_funcs = 0x0
        cb_data = 0x0
        current_source_link = {data = 0xb89b1808, next = 0x0}
        need_destroy = <optimized out>
        source = 0xb89b1808
        current = 0xb8582d18
        i = <optimized out>
#8  g_main_context_dispatch (context=context@entry=0xb8557670) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:3195
No locals.
#9  0xb6d43290 in g_main_context_iterate (context=context@entry=0xb8557670, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:3266
        max_priority = 0
        timeout = 0
        some_ready = 1
        nfds = 5
        allocated_nfds = <optimized out>
        fds = <optimized out>
#10 0xb6d43371 in g_main_context_iteration (context=0xb8557670, context@entry=0x0, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.33.6/./glib/gmain.c:3327
        retval = <optimized out>
#11 0xb6ee8bec in g_application_run (application=0xb872f810, argc=argc@entry=2, argv=0xbff96214) at /build/buildd/glib2.0-2.33.6/./gio/gapplication.c:1607
        arguments = 0xb8755028
        status = 0
        i = <optimized out>
        __PRETTY_FUNCTION__ = "g_application_run"
#12 0xb772a8df in main (argc=2, argv=0xbff96214) at control-center.c:207
        shell = <optimized out>
        application = 0xb872f810
        status = <optimized out>