kern/50309: filemon(4) breaks running system

[bch <brad.harder%gmail.com@localhost>]

>Number:         50309
>Category:       kern
>Synopsis:       filemon(4) breaks running system
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Oct 07 01:05:00 +0000 2015
>Originator:     bch <brad.harder%gmail.com@localhost>
>Release:        NetBSD 7.99.21
>Organization:
	method logic digital
>Environment:
System: NetBSD strathcona 7.99.21 NetBSD 7.99.21 (GENERIC) #70: Tue
Oct 6 17:27:12 PDT 2015
root@strathcona:/usr/obj/sys/arch/amd64/compile/GENERIC amd64
Architecture: x86_64
Machine: amd64
>Description:
	Utilizing filemon(4) sets environemnt (entire OS) to state where
env(1) no longer works.

shell:
bash-4.3$ env ls
env: ls: Undefined error: 0

filemon output:
F 98 2015
R 2015 /usr/lib/libgcc_s.so.1
R 2015 /usr/lib/libc.so.12
R 2015 /usr/share/nls/nls.alias
R 2015 /usr/share/nls/C/libc.cat
X 2015 126

>How-To-Repeat:
	Ref code in filemon(4) manpage will enter this state.
>Fix: