usb/114310: USB hub attachment panics kernel during libusb device scan

[M. Warner Losh]

In message: <200707062040.l66KeBE7033521 at freefall.freebsd.org>
            "Victor Liu" <victor.liu at gmail.com> writes:
:  Here is the code I just used to panic it just now (requires libusb):

Thanks!

Warner