I can't get more info because crash dumps don't work when this happens, but 
for what it's worth, here's a traceback which shows what happens when I 
attempt to use my da0: <SanDisk ImageMate II 1.30> Removable Direct Access
SCSI-2 device on an OHCI-based controller.  This was working just a few days 
ago with a UHCI controller, so ...

The crash is from an invalid read at 0xbff3e000, which is PTmap plus some
offset. The trace as far as I can get it, from a kernel with USB but no
"options" 
enabled, would be:

ohci_alloc_std_chain+0xf5 (calling a DMAADDR() function, I believe)
ohci_device_bulk_start+0x0d
ohci_device_bulk_transfer+0x27
usbd_transfer+0xc0
umass_setup_transfer+0x4f
umass_bbb_state
usb_transfer_complete
ohci_softintr

Can anyone confirm if this is normal or I have an exceptional system?  I 
have two completely unrelated OHCI-based controllers in my system and 
neither works.

-- 
Brian Fundakowski Feldman                           \'[ FreeBSD ]''''''''''\
  <> [EMAIL PROTECTED]  <> [EMAIL PROTECTED]      \  The Power to Serve! \
 Opinions expressed are my own.                       \,,,,,,,,,,,,,,,,,,,,,,\



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