>Number:         16103
>Category:       kern
>Synopsis:       panic when creating a file over 4GB on an msdos filesystem
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Mar 27 23:24:00 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     
>Release:        NetBSD 1.5.2
>Organization:
Douglas
>Environment:
	
System: NetBSD aoife.home 1.5.2 NetBSD 1.5.2 (AOIFE.1.5) #0: Sun Jan 20 19:45:33 GMT 2002 root@aoife.home:/opt/kernel/syssrc/sys/arch/i386/compile/AOIFE.1.5 i386


>Description:
	NetBSD/i386-1.5.2 crashes with a panic: deextend: file too large panic when creating a file over 4GB on an msdos filesystem. I noticed a lockmanager: locking against myself message on the console when the panic occured too. This occured when dump(1)ing a filesystem over 4GB.
	Actual size of remaining file after crash was 3437232128 bytes
>How-To-Repeat:
	When I do "dd if=/dev/zero of=/path/to/mounted/msdos/filesystem/file bs=1024k count=10000" and it crashes.
>Fix:
	Unknown
>Release-Note:
>Audit-Trail:
>Unformatted: