port-arm/46889: reproducable kernel lockup on shark

[martin%NetBSD.org@localhost]

>Number:         46889
>Category:       port-arm
>Synopsis:       kernel locks up
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    port-arm-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Sep 02 08:55:00 +0000 2012
>Originator:     Martin Husemann
>Release:        NetBSD 6.99.11
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD night-rest.duskware.de 6.99.11 NetBSD 6.99.11 (GENERIC) #12: Sun 
Sep 2 00:25:35 CEST 2012 
martin%night-porter.duskware.de@localhost:/usr/src/sys/arch/shark/compile/GENERIC
 shark
Architecture: arm
Machine: shark
>Description:

Running the kernel/t_lock test locks up the kernel. Breaking into ddb is still
possible, but the machine is not pingable.

>How-To-Repeat:

cd /usr/tests/kernel && atf-run t_lock

>Fix:
n/a