.
Thread 3 (Thread 0x7f5bfcb25700 (LWP 27716)):
#0  0x00007f5bffad2b03 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  0x00007f5c00216ff6 in g_main_context_poll (n_fds=3, fds=0x7f5bf00010c0, timeout=-1, context=0x1a3a510, priority=<optimized out>) at /build/buildd/glib2.0-2.32.0/./glib/gmain.c:3417
        poll_func = 0x7f5c00223f10 <g_poll>
#2  g_main_context_iterate (dispatch=1, block=<optimized out>, context=0x1a3a510, self=<optimized out>) at /build/buildd/glib2.0-2.32.0/./glib/gmain.c:3118
        timeout = -1
        some_ready = <optimized out>
        fds = 0x7f5bf00010c0
        max_priority = 2147483647
        nfds = 3
        allocated_nfds = <optimized out>
#3  g_main_context_iterate (context=0x1a3a510, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.32.0/./glib/gmain.c:3060
        some_ready = -268431168
#4  0x00007f5c0021745a in g_main_loop_run (loop=0x1a3a4c0) at /build/buildd/glib2.0-2.32.0/./glib/gmain.c:3317
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#5  0x00007f5bff766326 in gdbus_shared_thread_func (user_data=<optimized out>) at /build/buildd/glib2.0-2.32.0/./gio/gdbusprivate.c:277
        data = 0x1a3a4e0
#6  0x00007f5c002389b5 in g_thread_proxy (data=0x1a37000) at /build/buildd/glib2.0-2.32.0/./glib/gthread.c:801
        thread = 0x1a37000
#7  0x00007f5c00b33e9a in start_thread (arg=0x7f5bfcb25700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7f5bfcb25700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 6623878095716421206, 140734412158176, 140033058298304, 0, 3, -6531548304872108458, -6533386675972010410}, 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  0x00007f5bffade4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#9  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (Thread 0x7f5bfd326700 (LWP 27715)):
#0  0x00007f5bffad2b03 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  0x00007f5c00216ff6 in g_main_context_poll (n_fds=1, fds=0x7f5bf80008e0, timeout=-1, context=0x1a2b980, priority=<optimized out>) at /build/buildd/glib2.0-2.32.0/./glib/gmain.c:3417
        poll_func = 0x7f5c00223f10 <g_poll>
#2  g_main_context_iterate (dispatch=1, block=<optimized out>, context=0x1a2b980, self=<optimized out>) at /build/buildd/glib2.0-2.32.0/./glib/gmain.c:3118
        timeout = -1
        some_ready = <optimized out>
        fds = 0x7f5bf80008e0
        max_priority = 2147483647
        nfds = 1
        allocated_nfds = <optimized out>
#3  g_main_context_iterate (context=0x1a2b980, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.32.0/./glib/gmain.c:3060
        some_ready = -134215456
#4  0x00007f5c00217124 in g_main_context_iteration (context=0x1a2b980, may_block=1) at /build/buildd/glib2.0-2.32.0/./glib/gmain.c:3184
        retval = <optimized out>
#5  0x00007f5c00217171 in glib_worker_main (data=<optimized out>) at /build/buildd/glib2.0-2.32.0/./glib/gmain.c:4856
No locals.
#6  0x00007f5c002389b5 in g_thread_proxy (data=0x1a2a050) at /build/buildd/glib2.0-2.32.0/./glib/gthread.c:801
        thread = 0x1a2a050
#7  0x00007f5c00b33e9a in start_thread (arg=0x7f5bfd326700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7f5bfd326700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 6623878095716421206, 140734412160016, 140033066691008, 0, 3, -6531551602870120874, -6533386675972010410}, 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  0x00007f5bffade4bd 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 0x7f5c01ada7c0 (LWP 27714)):
#0  0x00007f5c009200b6 in libusb_exit (ctx=0x0) at ../../libusb/core.c:1655
        __FUNCTION__ = "libusb_exit"
#1  0x0000000000415a9d in up_device_csr_finalize (object=0x1a4c000) at up-device-csr.c:327
        csr = 0x1a4c000
        __PRETTY_FUNCTION__ = "up_device_csr_finalize"
#2  0x00007f5c004d8e73 in g_object_unref (_object=0x1a4c000) at /build/buildd/glib2.0-2.32.0/./gobject/gobject.c:3018
        weak_locations = <optimized out>
        object = 0x1a4c000
        old_ref = <optimized out>
        __PRETTY_FUNCTION__ = "g_object_unref"
#3  0x0000000000411922 in up_backend_device_new (native=0x1a3e190, backend=0x1a3e1e0) at up-backend.c:139
        native_path = <optimized out>
        device = 0x1a4c000
        ret = <optimized out>
        subsys = <optimized out>
        input = <optimized out>
#4  up_backend_device_add (backend=0x1a3e1e0, native=0x1a3e190) at up-backend.c:229
        object = <optimized out>
        device = <optimized out>
#5  0x000000000041219b in up_backend_coldplug (backend=0x1a3e1e0, daemon=0x1a32020) at up-backend.c:324
        native = <optimized out>
        devices = 0x1a27b60
        l = 0x1a27b60
        i = <optimized out>
        ret = <optimized out>
        subsystems = {0x41c3a7 "power_supply", 0x41c3c9 "usb", 0x41c3b4 "tty", 0x41c3cd "input", 0x0}
#6  0x0000000000408cef in up_daemon_startup (daemon=<optimized out>) at up-daemon.c:752
        ret = <optimized out>
        on_battery = <optimized out>
        on_low_battery = <optimized out>
        priv = 0x1a32040
#7  0x0000000000406c86 in main (argc=1, argv=0x7fff48a50158) at up-main.c:289
        error = 0x0
        daemon = 0x1a32020
        qos = 0x1a29a30
        kbd_backlight = 0x1a2cb80
        wakeups = 0x1a3de30
        context = <optimized out>
        bus_proxy = <optimized out>
        bus = <optimized out>
        ret = <optimized out>
        retval = 1
        timed_exit = 0
        immediate_exit = 0
        session_bus = 0
        timer_id = 0
        verbose = 0
        options = {{long_name = 0x41bfee "timed-exit", short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x7fff48a5003c, description = 0x41bff9 "Exit after a small delay", arg_description = 0x0}, {long_name = 0x41c012 "immediate-exit", short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x7fff48a50040, description = 0x41c0c8 "Exit after the engine has loaded", arg_description = 0x0}, {long_name = 0x41c021 "test", short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x7fff48a50044, description = 0x41c0f0 "Run on the session bus (only for testing)", arg_description = 0x0}, {long_name = 0x41c026 "verbose", short_name = 118 'v', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x7fff48a50048, description = 0x41c120 "Show extra debugging information", 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}}