bin/40636: fsck_ffs leaves zero lenght symlinks behind

[bad%bsd.de@localhost (Christoph Badura)]

>Number:         40636
>Category:       bin
>Synopsis:       fsck_ffs doesn't remove truncated symlinks
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Feb 14 01:55:00 +0000 2009
>Originator:     Christoph Badura
>Release:        NetBSD 5.99.4
>Organization:
        
>Environment:
        
        
System: NetBSD not-invented-here 5.99.4 NetBSD 5.99.4 (gaol_domu) #1: Sat Feb 
14 01:41:47 CET 2009 bad@not-invented-here:/home/bad/gaol_domu i386
Architecture: i386
Machine: i386
>Description:
        
        after a panic and being the kernel hanging in "syncing filesystems"
        fsck truncated some symlinks that were created shortly before the
        panic by a "make" in a kernel compilation directory and left
        zero length symlinks behind.
>How-To-Repeat:
        
        "cd GENERIC && make"
        break into ddb and
        "reboot 4"
        get lucky
>Fix:
        
        unknown.

>Unformatted: