On Sun, Dec 12, 2004 at 02:19:32PM +0100, Thierry Lacoste wrote:
> [...]
> Now if I unplug the key without unmounting it,
> I have the following kernel message:
> 
>  umass0: at uhub2 port 6 (addr 2) disonnected
>  sd0(umass0:0:0:0): generic HBA error
>  uvm_fault(0x0625600, 0, 1, 1) -> 0xe
>  kernel: page fault trap, code=0
>  Stopped in pid 7.1 (usb2) at   0:    invalid adress
>  db>

This is a known problem, I think there's even a PR opened about it.
I don't think it has been fixed yet.

-- 
Manuel Bouyer <bouyer@antioche.eu.org>
     NetBSD: 26 ans d'experience feront toujours la difference
--