From syssgm@devetir.qld.gov.au  Thu Jun  1 18:39:05 1995
Received: from bunyip.cc.uq.oz.au (bunyip.cc.uq.oz.au [130.102.2.1])
          by freefall.cdrom.com (8.6.10/8.6.6) with SMTP id SAA21558
          for <FreeBSD-gnats-submit@freebsd.org>; Thu, 1 Jun 1995 18:39:03 -0700
Received: from cc.uq.oz.au by bunyip.cc.uq.oz.au 
          id <05519-0@bunyip.cc.uq.oz.au>; Fri, 2 Jun 1995 11:37:38 +1000
Received: from stupid.devetir.qld.gov.au 
          by pandora.devetir.qld.gov.au (8.6.10/DEVETIR-E0.3a) with ESMTP 
          id LAA14847 for <FreeBSD-gnats-submit@freebsd.org>;
          Fri, 2 Jun 1995 11:15:41 +1000
Received: (from syssgm@localhost) by stupid.devetir.qld.gov.au (8.6.11/8.6.9) 
          id LAA00224; Fri, 2 Jun 1995 11:06:11 +1000
Message-Id: <199506020106.LAA00224@stupid.devetir.qld.gov.au>
Date: Fri, 2 Jun 1995 11:06:11 +1000
From: Stephen McKay <syssgm@devetir.qld.gov.au>
Sender: syssgm@devetir.qld.gov.au
Reply-To: syssgm@devetir.qld.gov.au
To: FreeBSD-gnats-submit@freebsd.org
Subject: bad mount causes panic: ufs_lock
X-Send-Pr-Version: 3.2

>Number:         472
>Category:       kern
>Synopsis:       'mount /foo /foo' causes panic: ufs_lock
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs (FreeBSD bugs mailing list)
>State:          closed
>Quarter:
>Keywords:
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Jun  1 18:40:00 1995
>Closed-Date:    Sat Jul 8 19:11:10 MET DST 1995
>Last-Modified:
>Originator:     Stephen McKay
>Release:        FreeBSD 2.0-BUILT-19950510 i386
>Organization:
>Environment:

	386SX16 4Mb ram, IDE 80Mb, 10Mb swap
	FreeBSD-current CTM src-cur 681 (1995-05-31 01:19:48)
	Perhaps you think of this as 2.0.5-ALPHA.

>Description:

	One hazy afternoon, I mistyped a floppy mount command and got:

	    mount -t msdos /fd0 /fd0

	Result:

	    panic: ufs_lock: recursive lock not expected, pid: 267

	To be sure of this, I rebooted and tried:

	    mount /fd0 /fd0

	Result:

	    panic: ufs_lock: recursive lock not expected, pid: 11


>How-To-Repeat:

	'mount /mnt /mnt' should do the trick.

>Fix:
	
	Unknown.
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed 
State-Changed-By: joerg 
State-Changed-When: Sat Jul 8 19:11:10 MET DST 1995 
State-Changed-Why:  
duplicate for kern/434      umapfs panics when mounting ufs over itself 

>Unformatted:



