kern/50601: sparc64 with root-on-raid0 does not reboot

[martin%NetBSD.org@localhost]

>Number:         50601
>Category:       kern
>Synopsis:       sparc64 with root-on-raid0 does not reboot
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Dec 30 15:15:00 +0000 2015
>Originator:     Martin Husemann
>Release:        NetBSD 7.99.25
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD night-owl.duskware.de 7.99.25 NetBSD 7.99.25 (NIGHT-OWL) #367: Mon Dec 21 16:32:08 CET 2015 martin%night-owl.duskware.de@localhost:/usr/src/sys/arch/amd64/compile/NIGHT-OWL amd64
Architecture: sparc64
Machine: sparc64
>Description:

With a monolithic kernel (no options MODULAR) and root on raid0 a sparc64
system running -current does not reboot anymore. The kernel starts to detach
devices:

syncing disks... done
cd0: detached
pcmcia1: detached
audio0: detached

and then hangs, idle waiting. I guess raid0 would have been the next to
detach.

>How-To-Repeat:
s/a

>Fix:
n/a