kern/40375: netbsd-5: Process locks in vnode wchan when writing to LFS

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>Number:         40375
>Category:       kern
>Synopsis:       netbsd-5: Process locks in vnode wchan when writing to LFS
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Jan 12 14:45:00 +0000 2009
>Originator:     Matthew Mondor
>Release:        netbsd-5
>Organization:
>Environment:
NetBSD hal.xisop 5.0_BETA NetBSD 5.0_BETA (GENERIC_MM) #1: Thu Jan  1 22:39:44 
EST 2009  root%hal.xisop@localhost:/usr/obj/sys/arch/i386/compile/GENERIC_MM 
i386
>Description:
Since I was told that LFS was supposed to be more stable nowadays
than it was when I used it in the 1.5 days, I thought I'd give it
a try.

So I created a large fresh LFS file system (16GB), mounted it and
attempted a local mirror (on LAN) pkgsrc CVS checkout.  Less than
halfway the cvs process was permanently locked into vnode wchan.
>How-To-Repeat:
See above.
>Fix:
Unknown, but it looks like a race condition.