port-sparc64/58286: NetBSD/sparc64 crashes when rebooting in qemu

[thorpej%me.com@localhost]

>Number:         58286
>Category:       port-sparc64
>Synopsis:       NetBSD/sparc64 crashes when rebooting in qemu
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-sparc64-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat May 25 22:35:00 +0000 2024
>Originator:     Jason Thorpe
>Release:        10.99.10
>Organization:
RISCy Business
>Environment:
Really, it's NetBSD/sparc64 10.99.10 -- trust me.  (It's sitting in DDB.)
>Description:
"reboot" in one window and then:

login: May 25 15:30:32 sparc64-vm su: thorpej to root on /dev/pts/0
May 25 15:30:33 sparc64-vm reboot: rebooted by thorpej
May 25 15:30:34 sparc64-vm syslogd[473]: Exiting on signal 15
[ 628.4152102] syncing disks... done
[ 629.1252295] cd0: detached
[ 629.1252295] atapibus0: detached
[ 629.1252295] atabus1: detached
[ 629.1252295] pci2: detached
[ 629.1453741] ppb1: detached
[ 629.1652449] turning off swap... done
[ 629.9234491] wd0: detached
[ 629.9234491] atabus0: detached
[ 629.9234491] cpu0: rebooting

BOOT[ 629.9234491] Skipping crash dump on recursive panic
[ 629.9234491] panic: OF_boot failed
[ 629.9234491] cpu0: Begin traceback...
[ 629.9234491] cpu0: End traceback...
Stopped in pid 970.970 (reboot) at      netbsd:cpu_Debugger+0x4:        nop
db{0}> 

>How-To-Repeat:
Boot NetBSD/sparc64 in qemu and then attempt to reboot.
>Fix:
Unbeknownst to me, but possibly beknownst to someone else.