>Number:         10541
>Category:       port-i386
>Synopsis:       System instability in snapshot/20000527
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    port-i386-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Jul 08 16:44:00 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     Kevin P. Neal
>Release:        Snapshot 2000 05 27
>Organization:
-- 
Kevin P. Neal                                http://www.pobox.com/~kpn/

"You know, I think I can hear the machine screaming from here...  \
'help me! hellpp meeee!'"  - Heather Flanagan, 14:52:23 Wed Jun 10 1998
>Environment:
System: NetBSD greybeard.int.neutralgood.org 1.4Z NetBSD 1.4Z (GENERIC) #12: Sat May 27 16:55:41 PDT 2000     root@swinger:/u1/snapshots/src/sys/arch/i386/compile/GENERIC i386

>Description:

I've now gotten two hangs on 1.4Z machines. I'm loading the machine down
with something (a kernel compile) and I startx (which causes much swapping
and knashing of teeth). Bang, the maching hangs and nothing works (except
the reset switch). 

This has happened twice (except on the smaller machine I started top
and not X). Note that ironwood is stable enough to compile kernels with
no crashes, except for the one time when top crashed the box. Kernel
compiles take about a month on this ironwood (8 megs of RAM, 2.5 after
the kernel loads, and make and cc both take up about 4 megs -> swapswapswap).

I'm using the May 27'th i386 snapshot.

Machine #1:

NetBSD 1.4Z (GENERIC) #12: Sat May 27 16:55:41 PDT 2000
    root@swinger:/u1/snapshots/src/sys/arch/i386/compile/GENERIC
cpu0: Intel 486DX (486-class)
total memory = 16000 KB
avail memory = 10060 KB
using 225 buffers containing 900 KB of memory
mainbus0 (root)
isa0 at mainbus0
(bha probe): bha_cmd, cmd/data port empty 13
aha1 at isa0 port 0x334-0x337 irq 11 drq 7
aha1: model AHA-1542C, firmware 0.1
aha1: unlocking mailbox interface
aha1: async, parity
scsibus0 at aha1: 8 targets, 8 luns per target
com0 at isa0 port 0x3f8-0x3ff irq 4: ns8250 or ns16450, no fifo
com1 at isa0 port 0x2f8-0x2ff irq 3: ns8250 or ns16450, no fifo
pckbc0 at isa0 port 0x60-0x64
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard
wdc0 at isa0 port 0x1f0-0x1f7 irq 14
wd0 at wdc0 channel 0 drive 0: <QUANTUM MAVERICK 540A>
wd0: drive supports 8-sector pio transfers, lba addressing
wd0: 516 MB, 1049 cyl, 16 head, 63 sec, 512 bytes/sect x 1057392 sectors
wd0: drive supports PIO mode 3, DMA mode 1
wdc1 at isa0 port 0x170-0x177 irq 15
atapibus0 at wdc1 channel 0
cd0 at atapibus0 drive 0: <NEC                 CD-ROM DRIVE:251, , 4.14> type 5 cdrom removable
cd0: drive supports PIO mode 3
vga0 at isa0 port 0x3b0-0x3df iomem 0xa0000-0xbffff
wsdisplay0 at vga0: console (80x25, vt100 emulation), using wskbd0
lpt0 at isa0 port 0x378-0x37b irq 7
we1 at isa0 port 0x300-0x31f iomem 0xcc000-0xcffff irq 10
we1: WD8013WC Ethernet (16-bit)
we1: Ethernet address 00:00:c0:0f:92:56
sb0 at isa0 port 0x220-0x237 irq 5 drq 1: dsp v3.01
audio0 at sb0: half duplex, mmap, independent
midi0 at sb0: SB MIDI UART
opl0 at sb0: model OPL3
midi1 at opl0: SB Yamaha OPL3
pcppi0 at isa0 port 0x61
midi2 at pcppi0: PC speaker
sysbeep0 at pcppi0
isapnp0 at isa0 port 0x279: ISA Plug 'n Play device support
npx0 at isa0 port 0xf0-0xff: using exception 16
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
isapnp0: no ISA Plug 'n Play devices found
biomask fb45 netmask ff45 ttymask ffc7
scsibus0: waiting 2 seconds for devices to settle...
sd0 at scsibus0 target 0 lun 0: <QUANTUM, FIREBALL1080S, 1Q09> SCSI2 0/direct fixed
sd0: 1042 MB, 3835 cyl, 4 head, 139 sec, 512 bytes/sect x 2134305 sectors
boot device: wd0
root on wd0a dumps on wd0b
WARNING: NVRAM century is 20 but RTC year is 1994
WARNING: clock time much less than file system time
WARNING: using file system time
WARNING: CHECK AND RESET THE DATE!
root file system type: ffs
wsdisplay0: screen 1 added (80x25, vt100 emulation)
wsdisplay0: screen 2 added (80x25, vt100 emulation)
wsdisplay0: screen 3 added (80x25, vt100 emulation)
wsdisplay0: screen 4 added (80x25, vt100 emulation)
wsdisplay0: screen 5 added (80x25, vt100 emulation)
wsdisplay0: screen 6 added (80x25, vt100 emulation)
wsdisplay0: screen 7 added (80x25, vt100 emulation)
wsmux1: connecting to wsdisplay0
Accounting started

Machine #2:

NetBSD ironwood.int.neutralgood.org 1.4Z NetBSD 1.4Z (GENERIC) #12: Sat May 27 16:55:41 PDT 2000     root@swinger:/u1/snapshots/src/sys/arch/i386/compile/GENERIC i386

NetBSD 1.4Z (GENERIC) #12: Sat May 27 16:55:41 PDT 2000
    root@swinger:/u1/snapshots/src/sys/arch/i386/compile/GENERIC
cpu0: family 4 model 2 step 3
cpu0: Intel 486SX (486-class)
total memory = 7808 KB
avail memory = 2484 KB
using 123 buffers containing 492 KB of memory
mainbus0 (root)
isa0 at mainbus0
com0 at isa0 port 0x3f8-0x3ff irq 4: ns8250 or ns16450, no fifo
com1 at isa0 port 0x2f8-0x2ff irq 3: ns8250 or ns16450, no fifo
pckbc0 at isa0 port 0x60-0x64
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard
wdc0 at isa0 port 0x1f0-0x1f7 irq 14
wd0 at wdc0 channel 0 drive 0: <Maxtor 7540 AV>
wd0: drive supports 8-sector pio transfers, lba addressing
wd0: 514 MB, 1046 cyl, 16 head, 63 sec, 512 bytes/sect x 1054368 sectors
wd0: drive supports PIO mode 3, DMA mode 0
vga0 at isa0 port 0x3b0-0x3df iomem 0xa0000-0xbffff
wsdisplay0 at vga0: console (80x25, vt100 emulation), using wskbd0
lpt0 at isa0 port 0x378-0x37b irq 7
we0: overriding IRQ 9 to 5
we0 at isa0 port 0x280-0x29f iomem 0xd0000-0xd3fff irq 5
we0: SMC8216/SMC8216C Ethernet (16-bit)
we0: Ethernet address 00:00:c0:d6:f8:9d
pcppi0 at isa0 port 0x61
midi0 at pcppi0: PC speaker
sysbeep0 at pcppi0
isapnp0 at isa0 port 0x279: ISA Plug 'n Play device support
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
isapnp0: no ISA Plug 'n Play devices found
biomask ff45 netmask ff65 ttymask ffe7
boot device: wd0
root on wd0a dumps on wd0b
root file system type: ffs
wsdisplay0: screen 1 added (80x25, vt100 emulation)
wsdisplay0: screen 2 added (80x25, vt100 emulation)
wsdisplay0: screen 3 added (80x25, vt100 emulation)
wsdisplay0: screen 4 added (80x25, vt100 emulation)
wsdisplay0: screen 5 added (80x25, vt100 emulation)
wsdisplay0: screen 6 added (80x25, vt100 emulation)
wsdisplay0: screen 7 added (80x25, vt100 emulation)
wsmux1: connecting to wsdisplay0
Accounting started


>How-To-Repeat:
	
>Fix:
	
>Release-Note:
>Audit-Trail:
>Unformatted: