.
Thread 1 (process 1432):
#0  usb_destroy_configuration (dev=<value optimized out>)
    at ../descriptors.c:420
	as = (struct usb_interface_descriptor *) 0x2621bd0
	ifp = (struct usb_interface *) 0x261d510
	cf = (struct usb_config_descriptor *) 0x263ad50
	c = 0
	i = 0
	j = 0
	k = 0
#1  0x00007f5406ebb8c9 in usb_free_dev (dev=0x0) at ../usb.c:293
No locals.
#2  0x00007f5406ebbc9e in usb_find_devices () at ../usb.c:121
	tndev = (struct usb_device *) 0x0
	ndev = (struct usb_device *) 0x263c000
	tdev = (struct usb_device *) 0x264bfb0
	devices = (struct usb_device *) 0x263d060
	dev = (struct usb_device *) 0x264af50
	bus = (struct usb_bus *) 0x2642c70
	ret = <value optimized out>
	changes = 0
#3  0x0000000000413587 in up_device_csr_init (csr=0x26191d0)
    at up-device-csr.c:289
No locals.
#4  0x00007f54073ce935 in g_type_create_instance ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#5  0x00007f54073b283c in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#6  0x00007f54073b3cca in g_object_newv () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#7  0x00007f54073b450c in g_object_new () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#8  0x0000000000410577 in up_backend_device_add (backend=0x2604c40, 
    native=0x260c320) at up-backend.c:111
	object = <value optimized out>
	device = <value optimized out>
	ret = <value optimized out>
	__FUNCTION__ = "up_backend_device_add"
#9  0x00000000004107cb in up_backend_coldplug (backend=0x2604c40, 
    daemon=<value optimized out>) at up-backend.c:301
	devices = (GList *) 0x1002002040507
	l = (GList *) 0x2611720
	subsystems = {0x4196e0 "power_supply", 0x4196f1 "usb", 
  0x4196ed "tty", 0x4196f5 "input", 0x0}
	__FUNCTION__ = "up_backend_coldplug"
#10 0x000000000040741a in up_daemon_startup (daemon=0x260c860)
    at up-daemon.c:823
	ret = <value optimized out>
	on_battery = <value optimized out>
	on_low_battery = <value optimized out>
	__FUNCTION__ = "up_daemon_startup"
#11 0x000000000040fdf0 in main (argc=1, argv=0x7fff5eceb758) at up-main.c:187
	error = (GError *) 0x0
	daemon = (UpDaemon *) 0x260c860
	qos = (UpQos *) 0x25fb640
	wakeups = (UpWakeups *) 0x2602f70
	context = <value optimized out>
	bus_proxy = <value optimized out>
	bus = <value optimized out>
	ret = <value optimized out>
	retval = <value optimized out>
	timed_exit = 0
	immediate_exit = 0
	options = {{long_name = 0x419317 "timed-exit", short_name = 0 '\0', 
    flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x7fff5eceb64c, 
    description = 0x4192fe "Exit after a small delay", 
    arg_description = 0x0}, {long_name = 0x419322 "immediate-exit", 
    short_name = 0 '\0', flags = 0, arg = G_OPTION_ARG_NONE, 
    arg_data = 0x7fff5eceb648, 
    description = 0x4193b0 "Exit after the engine has loaded", 
    arg_description = 0x0}, {long_name = 0x0, short_name = 0 '\0', flags = 0, 
    arg = G_OPTION_ARG_NONE, arg_data = 0x0, description = 0x0, 
    arg_description = 0x0}}
	__FUNCTION__ = "main"