On one occasion using a -current kernel Jason Thorpe built for me,
I got the following:

onstant 10
auxreg0 at mainbus0 ioaddr 0xf7400000
zs0 at mainbus0 ioaddr 0xf1000000 pri 12, softpri 6
zs1 at mainbus0 ioaddr 0xf0000000 pri 12, softpri 6
fdc0 at mainbus0 ioaddr 0xf7200000 pri 11, softpri 4: chip 82072
fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
audio0 at mainbus0 ioaddr 0xf7201000 pri 13, softpri 4
sbus0 at mainbus0 ioaddr 0xf8000000: clock = 25 MHz
dma0 at sbus0 slot 0 offset 0x400000: rev 1
esp0 at sbus0 slot 0 offset 0x800000 pri 3: ESP100A, 25MHz, SCSI ID 7
scsibus0 at esp0: 8 targets
sd0 at scsibus0 targ 3 lun 0: <SEAGATE, ST31230N, 0290> SCSI2 0/direct fixed
sd0: 1010MB, 3992 cyl, 5 head, 103 sec, 512 bytes/sec
le0 at sbus0 slot 0 offset 0xc00000 pri 5: address 08:00:20:0f:3f:da
le0: 8 receive buffers, 2 transmit buffers
bwtwo0 at sbus0 slot 3 offset 0x0: SUNW,501-1561, 1152 x 900 (console)
bwtwo0: attached to /dev/fb
mountroot: trying ffs...
mountroot: trying nfs...
nfs_boot: using network interface 'le0'
nfs_boot: client_addr=0xcda67765
nfs_boot: server_addr=0xcda67764
nfs_boot: hostname=aspasia
root on utopia:/usr/local/export/aspasia/root
root time: 0x334b43ca
swap on utopia:/usr/local/export/aspasia/swap
swap size: 0x10000 (blocks)
root file system type: nfs
init: copying out path `/sbin/init' 11
panic: pmap_page_protect !PG_V
syncing disks... done
Frame pointer is at 0xf976dbf8
Call traceback:
  pc = f811b190  args = (0, 900fe0, f815c800, f976dc78, f816d290, 1f, f976dc60) fp = 0xf976dc60
  pc = f8037ca8  args = (100, 0, 1, f8002000, 0, 20, f976dcc8) fp = 0xf976dcc8
  pc = f8123178  args = (100, f8118bbc, f8166800, 30000000, 0, 30000000, f976dd30) fp = 0xf976dd30
  pc = f80e1d30  args = (f819c000, f81697b0, f81a8970, f8149c00, f81a8970, f8161400, f976ddb0) fp = 0xf976ddb0
  pc = f80e1c50  args = (f81b7d18, f8601c00, 1, f8149c00, f81a90a0, f8161400, f976de18) fp = 0xf976de18
  pc = f80e20e4  args = (1e, 17, 75, 2, ffffffff, 3, f976de80) fp = 0xf976de80
  pc = f8026ce8  args = (f8026cb3, f85de2de, ffffffff, f976bad8, 0, 600, f976dee8) fp = 0xf976dee8
  pc = f800a4d8  args = (f85de200, f976c300, f976bad8, f85dc400, 0, 0, f976df50) fp = 0xf976df50
  pc = 0  args = (0, 0, 0, 0, 0, 0, 0) fp = 0x0
rebooting

Copyright (c) 1982, 1986, 1989, 1991, 1993
    The Regents of the University of California.  All rights reserved.

NetBSD 1.2D (GENERIC) #0: Tue Apr  8 14:05:41 PDT 1997
    thorpej@lestat:/tmp_mnt/dracul/u5/snapshot/src/sys/arch/sparc/compile/GENERIC
real mem = 4141056
avail mem = 2101248
using 50 buffers containing 204800 bytes of memory
bootpath: /sbus0/le0
mainbus0 (root): Sun 4/40
cpu0 at mainbus0: MB86900/1A or L64801 @ 25 MHz, WTL3170/2 FPU
cpu0: 65536 byte write-through, 16 bytes/line, sw flush cache enabled
memreg0 at mainbus0 ioaddr 0xf4000000
clock0 at mainbus0 ioaddr 0xf2000000: mk48t02 (eeprom)
timer0 at mainbus0 ioaddr 0xf3000000 delay constant 10
auxreg0 at mainbus0 ioaddr 0xf7400000
zs0 at mainbus0 ioaddr 0xf1000000 pri 12, softpri 6
zs1 at mainbus0 ioaddr 0xf0000000 pri 12, softpri 6
fdc0 at mainbus0 ioaddr 0xf7200000 pri 11, softpri 4: chip 82072
fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
audio0 at mainbus0 ioaddr 0xf7201000 pri 13, softpri 4
sbus0 at mainbus0 ioaddr 0xf8000000: clock = 25 MHz
dma0 at sbus0 slot 0 offset 0x400000: rev 1
esp0 at sbus0 slot 0 offset 0x800000 pri 3: ESP100A, 25MHz, SCSI ID 7
scsibus0 at esp0: 8 targets
sd0 at scsibus0 targ 3 lun 0: <SEAGATE, ST31230N, 0290> SCSI2 0/direct fixed
sd0: 1010MB, 3992 cyl, 5 head, 103 sec, 512 bytes/sec
le0 at sbus0 slot 0 offset 0xc00000 pri 5: address 08:00:20:0f:3f:da
le0: 8 receive buffers, 2 transmit buffers
bwtwo0 at sbus0 slot 3 offset 0x0: SUNW,501-1561, 1152 x 900 (console)
bwtwo0: attached to /dev/fb
mountroot: trying ffs...
mountroot: trying nfs...
nfs_boot: using network interface 'le0'
nfs_boot: client_addr=0xcda67765
nfs_boot: server_addr=0xcda67764
nfs_boot: hostname=aspasia
root on utopia:/usr/local/export/aspasia/root
root time: 0x334b43ca
swap on utopia:/usr/local/export/aspasia/swap
swap size: 0x10000 (blocks)
root file system type: nfs
init: copying out path `/sbin/init' 11