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Date: Sat, 15 May 1999 18:29:47 +0200 (CEST)
From: Gerhard Gonter <gonter@whisky.wu-wien.ac.at>
Reply-To: gonter@whisky.wu-wien.ac.at
To: FreeBSD-gnats-submit@freebsd.org
Subject: vm_fault and panic upon mount of msdos FS after failed mount
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>Number:         11724
>Category:       kern
>Synopsis:       vm_fault and panic upon mount of msdos FS after failed mount
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat May 15 09:30:01 PDT 1999
>Closed-Date:    Sun May 16 01:32:23 PDT 1999
>Last-Modified:  Sun May 16 01:35:12 PDT 1999
>Originator:     Gerhard Gonter
>Release:        FreeBSD 3.0-RELEASE i386
>Organization:
WU-Wien
>Environment:

	FreeBSD 3.0-RELEASE

>Description:

	Trying to mount a MSDOS file system without -t msdos will result
	in a "incorrect superblock" message.  Using the -t msdos option
	after that results in a panic message and reboot:
	vm_fault: fault on nonfault entry, addr: f60cc00

>How-To-Repeat:

	# assume da0s1 is a primary partition with a MSDOS file system:
	mount /dev/da0s1 /C
	mount -t msdos /dev/da0s1 /C

>Fix:
	
	Fix unknown.  Workaround: remove any MSDOS file systems ;)


>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed 
State-Changed-By: dt 
State-Changed-When: Sun May 16 01:32:23 PDT 1999 
State-Changed-Why:  
Fixed by luoqi in rev 1.188 of src/sys/kern/vfs_bio.c. Upgrade to FreeBSD 3.1 or later. 
>Unformatted:
