kern/47563: test cases do not timeout and hang

[martin%NetBSD.org@localhost]

>Number:         47563
>Category:       kern
>Synopsis:       test cases do not timeout and hang
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Feb 13 13:25:01 +0000 2013
>Originator:     Martin Husemann
>Release:        NetBSD 6.99.16
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD thirdstage.duskware.de 6.99.16 NetBSD 6.99.16 (MODULAR) #43: Wed 
Feb 13 10:58:39 CET 2013 
martin%night-porter.duskware.de@localhost:/usr/src/sys/arch/sparc64/compile/MODULAR
 sparc64
Architecture: sparc64
Machine: sparc64
>Description:

Automatic test runs fail, hang forever and the atf timeout does not work.
When I manually kill rump_allserver, atf-report says:

dev/sysmon/t_swsensor (93/558): 5 test cases
    alarm_sensor: [6595.641156s] Failed: Test case timed out after 60 seconds

This is reproducable.
Last successfull test run (with -current mostly unbuildable in between) was
on 2013-02-05.

>How-To-Repeat:

cd /usr/tests/dev/sysmon
atf-run t_swsensor | atf-report

>Fix:
n/a