port-macppc/55131: ofctl can lock up machine

[martin%NetBSD.org@localhost]

>Number:         55131
>Category:       port-macppc
>Synopsis:       ofctl can lock up machine
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-macppc-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Apr 02 05:45:00 +0000 2020
>Originator:     Martin Husemann
>Release:        NetBSD 9.99.52
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD gethsemane.duskware.de 9.99.52 NetBSD 9.99.52 (GETHSEMANE) #31: Wed Apr 1 15:57:13 CEST 2020 martin%seven-days-to-the-wolves.aprisoft.de@localhost:/work/src/sys/arch/macppc/compile/GETHSEMANE macppc
Architecture: powerpc
Machine: macppc
>Description:

I tried (as root):

	ofctl -p /rom/boot-rom/model

and the command hang - probably with kernel lock held or something, as most
other things stopped working (but getty on consol still offered a new login
prompt, but login in did not work)

>How-To-Repeat:
s/a

>Fix:
n/a