kernel/851: pmax kernel panic

[marc@destek.net]

>Number:         851
>Category:       kernel
>Synopsis:       Kernel panic on DS5000/200
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jun  2 05:20:01 MDT 1999
>Last-Modified:
>Originator:     Marc Evans
>Organization:
Destek
>Release:        
>Environment:
>Description:
	Running a GENERIC.rz0 kernel panics consistently. To try to gather
	extra information, I built the code with DIAGNOSTIC and DEBUG
	enabled. The result is this bootup log:

Using PROM serial output until serial drivers initialized
Copyright (c) 1982, 1986, 1989, 1991, 1993
        The Regents of the University of California.  All rights reserved.
Copyright (c) 1995-1999 OpenBSD. All rights reserved.  http://www.OpenBSD.org

vm_mem_init: WARN: MD code did not set page size
OpenBSD 2.5-current (SYNERGY) #1: Wed Jun  2 06:49:20 EDT 1999
    marc@synergy:/usr/openbsd/sys/arch/pmax/compile/SYNERGY
real mem = 125829120
avail mem = 115425280
using 1561 buffers containing 6393856 bytes of memory
mainbus0 (root)
cpu0 at mainbus0: MIPS R3000 CPU Rev. 2.0 with MIPS R3010 FPC Rev. 3.0
tc0 at mainbus0: 25 MHz clock
device KN02     at tc0 slot 7 offset 0x0 not configured
le0 at tc0 slot 6 offset 0x0: address 08:00:2b:23:6d:32
le0: 32 receive buffers, 8 transmit buffers
tc_intr_establish: slot 6 level 2 handler 0x80034944 sc 0xc0438e00 on
asc0 at tc0 slot 5 offset 0x0 (bus speed: 25 MHz) : target 7
tc_intr_establish: slot 5 level 1 handler 0x8011bfdc sc 0xc043ac00 on
cfb0 at tc0 slot 0 offset 0x0 (1024x864x8) (console)
autconfiguration done, spl back to 0x0
Beginning old-style SCSI device autoconfiguration
rz0 at asc0 drive 0 lun 0 QUANTUM XP34550S rev LYK8
rz0: 4341MB, 5899 cyl, 10 head, 150 sec, 512 bytes/sec, 8890760 sec total
rconsattach: 1 raster consoles
rootdev=0x1500 rrootdev=0x3800 rawdev=0x3802
init: copying out flags `-s' 3
init: copying out path `/sbin/init' 11
ktlbmiss: PC 8012c364 RA 8012c3f8 ADR ffffcfe8
SR fc34 CR 3000010c SP 8002ffe0
panic: kernel stack overflow
stacktrace_subr+4c (c75b8000,0,0,a00047a0) ra 80135060 sz 104
stacktrace+18 (c75b8000,0,0,a00047a0) ra 80127998 sz 32
801278b0+e8 (c75b8000,0,0,a00047a0) ra 80056f3c sz 24
80056ea8+94 (100,100,1c,f) ra 80030da4 sz 24
80030728+67c (100,100,1c,f) ra 0 sz 0
User-level: pid 16559
syncing disks... done

>How-To-Repeat:
	Copy GENERIC.rz0 to FOO
	uncomment DIAGNOSTIC and DEBUG options
	compile and try to boot
>Fix:
	None known at this time.

>Audit-Trail:
>Unformatted:
	<machine, os, target, libraries (multiple lines)>
	System      : OpenBSD 2.5
	Architecture: OpenBSD.mips
	Machine     : pmax