5.1_RC2 panics on Challenge S

Hi,

I tried 5.1_RC2 on my R5000/180 Challenge S and got a kernel panic just
after the 'panel0' message (console capture below). The Challenge S
has the same front panel buttons as the Indy but, AFAIK, doesn't have
the audio circuitry so I'm guessing there might be a problem with the
hardware probing. I'm going to try building a kernel without the panel
option to see if that helps.

George

NetBSD 5.1_RC2 (GENERIC32_IP2x) #0: Fri May 21 08:19:40 UTC 2010
	[email protected]:/home/builds/ab/netbsd-5-1-RC2/sgimips/201005210534Z-obj/home/builds/ab/netbsd-5-1-RC2/src/sys/arch/sgimips/compile/GENERIC32_IP2x
total memory = 98304 KB
(768 KB reserved for ARCS)
avail memory = 91308 KB
mainbus0 (root): SGI-IP22 [SGI, 690ac9fb], 1 processor
cpu0 at mainbus0: MIPS R5000 CPU (0x2310) Rev. 1.0 with built-in FPU
Rev. 1.0 cpu0: 32KB/32B 2-ay set-associative L1 Instruction cache, 48
TLB entries cpu0: 32KB/32B 2-way set-associative write-back L1 Data
cache cpu0: 512KB/32B direct-mapped write-through L2 Data cache
ioc0 at mainbus0 addr 0x1fbd9800: rev 0, machine Indy (Guinness), board
rev 0 int0 at mainbus0 addr 0x1fbd9880
int0: bus 90MHz, CPU 180MHz
imc0 at mainbus0 addr 0x1fa00000: revision 3
gio0 at imc0
hpc0 at gio0: SGI HPC3 (onboard)
zsc0 at hpc0 offset 0x59830
zstty0 at zsc0 channel 1 (console i/o)
zstty1 at zsc0 channel 0
pckbc0 at hpc0 offset 0x59840
sq0 at hpc0 offset 0x54000: SGI Seeq 80c03
sq0: Ethernet address 08:00:69:0a:c9:fb
wdsc0 at hpc0 offset 0x44000: WD33C93B (20.0 MHz clock, BURST DMA, SCSI
ID 0) wdsc0: microcode revision 0x0d, Fast SCSI
scsibus0 at wdsc0: 8 targets, 8 luns per target
dsclock0 at hpc0 offset 0x60000
pi1ppc0 at hpc0 offset 0x58000
pi1ppc0: capabilities=8<PS2>
ppbus0 at pi1ppc0
ppbus0: No IEEE1284 device found.
panel0 at hpc0 offset 0x59800
panic: invalid interrupt level
Stopped in pid 0.1 (system) at  0x88311284:     jr      ra
                bdslot: nop
db> bt
0+88311284 (8dffe000,5a,0,bfbd9830) ra 0 sz 0
User-level: pid 0.1
db>