umounting a usbkey causes reboot

From: Gregory Nou <gregorynou_at_altern.org>
Date: Mon, 10 Oct 2005 12:57:47 +0200
hi,

when I made a umount -f on my usbkey, I experienced a reboot.

I did this :
# mount /dev/da0 /mnt
unplugged the usbkey, add a file from another computer, replugged it
# ls
the new files did not appear
# umount -f /dev/da0
instant reboot...

greg_at_nou ~% uname -a
FreeBSD hostname 7.0-CURRENT FreeBSD 7.0-CURRENT #0: Sun Oct  9 17:27:28 
CEST 2005     root_at_hostname:/usr/obj/usr/src/sys/MYKERNEL  i386

my dmesg concerning the usbkey :
da0 at umass-sim0 bus 0 target 0 lun 0
da0: <Luwen EasyDisk P1.0> Removable Direct Access SCSI-0 device
da0: 40.000MB/s transfers
da0: 125MB (256000 512 byte sectors: 64H 32S/T 125C)
Received on Mon Oct 10 2005 - 08:57:26 UTC

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