port-arm/49364: arm kernel panics on exec

[martin%NetBSD.org@localhost]

>Number:         49364
>Category:       port-arm
>Synopsis:       arm kernel panics on exec
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    port-arm-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Nov 05 13:35:00 +0000 2014
>Originator:     Martin Husemann
>Release:        NetBSD 7.99.1
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD space-truckin.duskware.de 7.99.1 NetBSD 7.99.1 (CUBIETRUCK) #57: Wed Nov 5 10:29:20 CET 2014 martin%night-owl.duskware.de@localhost:/usr/src/sys/arch/evbarm/compile/CUBIETRUCK evbarm
Architecture: earmv7hfeb
Machine: evbarm
>Description:
Under VA pressure (or kernel memory, or whatever) execing new processes will
panic the kernel (pmap assertion: pg != NULL, details to be filled in).

This happens for me when extracting set files (especially the huge debug
ones) to wd0 and login in via ssh, or see below.

>How-To-Repeat:

Make sure you have plenty of space in /tmp (i.e. no tmpfs)
ssh into the box, then:
cd /usr/tests/fs/cd9660
atf-run | atf-report

Now wait like 10 minutes, then try to log in on the console

>Fix:
n/a