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Date: Fri, 14 Feb 1997 16:06:43 -0600 (CST)
From: Zach Heilig <zach@blizzard.gaffaneys.com>
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To: FreeBSD-gnats-submit@freebsd.org
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Subject: kern/2738: Kernel crashes when you mount more than one device on a mount point (oops!)
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>Number:         2738
>Category:       kern
>Synopsis:       Kernel crashes when you mount more than one device on a mount point (oops!)
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Feb 14 14:10:01 PST 1997
>Last-Modified:
>Originator:     Zach Heilig
>Organization:
none
>Release:        FreeBSD 2.2-ALPHA i386
>Environment:

AMD 5x86-133, 20 Meg ram, 411 Meg sd0, 2.1 Gig sd1 running
2.2-ALPHA.

>Description:

I mounted devfs on /mnt, then mounted /dev/sd1c on /mnt
(forgot about devfs).  Then, when I tried to umount, the
machine did a cold boot (no panic).  I was trying to
configure sd1 to eventually be sd0 (finally figured it out).

	

>How-To-Repeat:

mount_devfs devfs /mnt
mount /dev/sd1c /mnt
umount devfs # message saying devfs wasn't mounted...
umount /mnt # probably not what I _should_ have done, but...
            # instant cold boot (no panic).
	

>Fix:

don't mount two different devices on the same mount point...	

	

>Audit-Trail:
>Unformatted: