ddb> show pool panics on sparc

[Jure =?UTF-8?B?UGXEjWFy?= <pegasus@nerv.eu.org>]

>Synopsis:      ddb> show pool panic
>Severity:      non-critical
>Priority:      medium
>Category:      kernel
>Class:         sw-bug
>Release:       3.4
>Environment:
        System      : OpenBSD 3.4
        Architecture: OpenBSD.sparc
        Machine     : sparc ss4
>Description:
        While debugging some other problems i noticed that whenever a show
pool command is issued in the ddb> kernel debugger, kernel would panic in
various ways. Once it even printed aligment error, which i belive is the
problem.
>How-To-Repeat:
        Stop-A your sparc (or send break on serial console) and enter show
pool. 100% repeatable here.
>Fix:
        none by me ...

also, friend says it's the same on vax.

dmesg:
OpenBSD 3.4-beta (GENERIC) #0: Tue Sep  2 10:04:06 CEST 2003
    root@nerv.eu.org:/usr/src/sys/arch/sparc/compile/GENERIC
real mem = 108683264
avail mem = 97366016
using 200 buffers containing 5431296 bytes of memory
bootpath:
/iommu@0,10000000/sbus@0,10001000/espdma@4,8400000/esp@4,8800000/sd@3,0
mainbus0 (root): SUNW,SPARCstation-4
cpu0 at mainbus0: MB86904 @ 110 MHz, on-chip FPU
cpu0: 16K instruction (32 b/l), 8K data (16 b/l) cache enabled
obio0 at mainbus0
clock0 at obio0 addr 0x71200000: mk48t08 (eeprom)
timer0 at obio0 addr 0x71d00000 delay constant 52
zs0 at obio0 addr 0x71100000 pri 12, softpri 6
zstty0 at zs0 channel 0
zstty1 at zs0 channel 1
zs1 at obio0 addr 0x71000000 pri 12, softpri 6
zskbd0 at zs1 channel 0: keyboard, type 5, layout 0x21
wskbd0 at zskbd0: console keyboard
zstty2 at zs1 channel 1: mouse
slavioconfig at obio0 addr 0x71800000 not configured
auxreg0 at obio0 addr 0x71900000
power0 at obio0 addr 0x71910000
fdc0 at obio0 addr 0x71400000 pri 11, softpri 4: chip 82077
iommu0 at mainbus0 addr 0x10000000: version 0x4/0x0, page-size 4096, range
64MB
sbus0 at iommu0: clock = 22 MHz
dma0 at sbus0 slot 4 offset 0x8400000: rev 2
esp0 at dma0 offset 0x8800000 pri 4: ESP200, 40MHz, SCSI ID 7
scsibus0 at esp0: 8 targets
sd0 at scsibus0 targ 1 lun 0: <DEC, RZ29B (C) DEC, 0007> SCSI2 0/direct
fixed
sd0: 4091MB, 3708 cyl, 20 head, 113 sec, 512 bytes/sec, 8380080 sec total
sd1 at scsibus0 targ 3 lun 0: <IBM, DORS-32160W, WA6A> SCSI2 0/direct fixed
sd1: 2063MB, 6703 cyl, 5 head, 126 sec, 512 bytes/sec, 4226725 sec total
bpp0 at sbus0 slot 4 offset 0xc800000: DMA2
ledma0 at sbus0 slot 4 offset 0x8400010: rev 2
le0 at ledma0 offset 0x8c00000 pri 6: address 08:00:20:7d:ea:22
le0: 16 receive buffers, 4 transmit buffers
hme0 at sbus0 slot 0 offset 0x8c00000 pri 7: address 08:00:20:7d:ea:22 rev
34
nsphy0 at hme0 phy 1: DP83840 10/100 media interface, rev. 0
SUNW,fas at sbus0 class scsi slot 0 offset 0x8800000 not configured
tcx0 at sbus0 slot 2 offset 0x800000: 
tcx0: 1152x900, id 0, rev 2, sense 0
wsdisplay0 at tcx0: console (std, sun emulation), using wskbd0
power-management at sbus0 slot 3 offset 0xa000000 not configured
root on sd1a
rootdev=0x710 rrootdev=0x1110 rawdev=0x1112


--

Jure Pečar