>Number:         3846
>Category:       kern
>Synopsis:       msdosfs: rename "MOTD.tmp" to "motd.tmp" panic: locking against myself
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people (Kernel Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jul  8 21:20:01 1997
>Last-Modified:
>Originator:     John Kohl
>Organization:
NetBSD Kernel Hackers `R` Us
>Release:        NetBSD-current, 1997/07/08
>Environment:
	
System: NetBSD pattern.arlington-heights.ma.us 1.2G NetBSD 1.2G (PATTERN) #14: Tue Jul 8 21:57:42 EDT 1997 jtk@pattern.arlington-heights.ma.us:/u4/sandbox/src/sys/arch/i386/compile/PATTERN i386


>Description:
	On msdosfs, mounting an NT FAT file system, renaming MOTD.foo to
motd.foo deadlocks and panics with "locking against myself"
stack trace showed msdosfs_rename() calling msdosfs_lock(),
which panics.

	This was fixed at least once before, judging by previous PR comments.

>How-To-Repeat:
	% cd /msdos
	% touch MOTD.foo
	% mv MOTD.foo motd.foo
>Fix:
>Audit-Trail:
>Unformatted: