On 2006-02-16 smb@cs.columbia.edu wrote:
> Page fault....
>
> usbd_alloc_xfer
> usbd_do_request
> usbd_do_request_flags
> usbd_reset_port

  This should have been:
usbd_alloc_xfer
usbd_do_request_flags_pipe
usbd_do_request_flags
usbd_do_request
usbd_reset_port

  If not, some stack corruption is involved.  Otherwise, it sounds like
kern/32011.  The problem is that one of the data structures in the
dev->bus->methods->allocx chain is freed early in detach.

Matthew Orgass
darkstar@city-net.com