strange crash

[Dmitry Morozovsky]

Dear collagues,

could someone sched me a light about the following crash (I'm almost sure about
hardware, temperature, etc...)

Machine is fairly stable; however, there are occational crashes, similar to
this one; backtraces are almost always single-step.

It's 4.8-R, dmesg and gdb -k output follows

====================================================================================

Copyright (c) 1992-2003 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD 4.8-RELEASE #2: Tue Apr  1 21:06:23 MSD 2003
    marck at kucha.rinet.ru:/usr/obj/FreeBSD/src.stable-48/sys/relay
Timecounter "i8254"  frequency 1193182 Hz
Timecounter "TSC"  frequency 851938704 Hz
CPU: AMD Athlon(tm) processor (851.94-MHz 686-class CPU)
  Origin = "AuthenticAMD"  Id = 0x642  Stepping = 2

Features=0x183f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR>
  AMD Features=0xc0440000<RSVD,AMIE,DSP,3DNow!>
real memory  = 259981312 (253888K bytes)
avail memory = 249024512 (243188K bytes)
Preloaded elf kernel "kernel" at 0xc0295000.
Pentium Pro MTRR support enabled
Using $PIR table, 6 entries at 0xc00fde70
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Host to PCI bridge> on motherboard
pci0: <PCI bus> on pcib0
pcib1: <PCI to PCI bridge (vendor=1106 device=b112)> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
pci1: <Trident model 8500 VGA-compatible display device> at 0.0 irq 11
isab0: <VIA 82C686 PCI-ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <VIA 82C686 ATA100 controller> port 0xe000-0xe00f at device 7.1 on
pci0
atapci0: Correcting VIA config for southbridge data corruption bug
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
pci0: <unknown card> (vendor=0x1106, dev=0x3057) at 7.4
fxp0: <Intel Pro 10/100B/100+ Ethernet> port 0xec00-0xec1f mem
0xd8000000-0xd80fffff,0xd8100000-0xd8100fff irq 11 at device 8.0 on pci0
fxp0: Ethernet address 00:04:ac:a6:e7:3c
inphy0: <i82555 10/100 media interface> on miibus0
inphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
orm0: <Option ROM> at iomem 0xc0000-0xcbfff on isa0
fdc0: <NEC 72065B or clone> at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on isa0
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
kbd0 at atkbd0
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A
sio1 at port 0x2f8-0x2ff irq 3 on isa0
sio1: type 16550A
ppc0: parallel port not found.
IP packet filtering initialized, divert disabled, rule-based forwarding
enabled, default to deny, unlimited logging
ad0: 6204MB <ST36531A> [13446/15/63] at ata0-master UDMA33
Mounting root from ufs:/dev/ad0s1a
WARNING: / was not properly dismounted

====================================================================================

IdlePTD at phsyical address 0x002b4000
initial pcb at physical address 0x00237ea0
panicstr: page fault
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address   = 0xe37e0000
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xc0142ffa
stack pointer           = 0x10:0xd0200d20
frame pointer           = 0x10:0xe37e0000
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 69094 (sendmail)
interrupt mask          = net tty bio cam
trap number             = 12
panic: page fault

syncing disks... 41 5 4 4 4 4 4 4 4 16 2 2 2 2 2 2 2 6
done
Uptime: 5d7h33m59s

dumping to dev #ad/0x20001, offset 540800
dump ata0: resetting devices .. done
247 246 245 244 243 242 241 240 239 238 237 236 235 234 233 232 231 230 229 228

[snip]

2 1 0
---
#0  dumpsys () at /FreeBSD/src.stable-48/sys/kern/kern_shutdown.c:487
487             if (dumping++) {

====================================================================================


Sincerely,
D.Marck                                   [DM5020, DM268-RIPE, DM3-RIPN]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck at rinet.ru ***
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