kern/50019: bmon(1) shows tap(4) interface name with garbage at the end

[dmb%yenn.ulegend.net@localhost]

>Number:         50019
>Category:       kern
>Synopsis:       bmon(1) shows tap(4) interface name with garbage at the end
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jul 01 23:00:01 +0000 2015
>Originator:     Dominik Bialy
>Release:        NetBSD 6.1_STABLE
>Organization:
None
>Environment:
	
	
System: NetBSD yenn 6.1_STABLE NetBSD 6.1_STABLE (YENN) #0: Mon Feb 9 22:57:44 UTC 2015 builds@yenn:/usr/obj/sys/arch/amd64/compile/YENN amd64
Architecture: x86_64
Machine: amd64
>Description:
	
	bmon(1) shows tap0 interface on this system as ``tap0�^K��c^C.''

	Probably the kernel driver is missing some '\0'.

	This has been observed in netbsd-5 and netbsd-6.  netbsd-3 didn't
	have this issue.

>How-To-Repeat:
	
	Run bmon(1) on a system where tap(4) interface is configured, and watch
	garbage on the screen.
>Fix:
	
	Not known.

>Unformatted: