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Date:      Wed,  5 Jul 2000 20:47:27 -0700 (PDT)
From:      jblaine@mitre.org
To:        freebsd-gnats-submit@FreeBSD.org
Subject:   kern/19726: fatal trap 12 / page fault
Message-ID:  <20000706034727.62B9637B6D9@hub.freebsd.org>

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>Number:         19726
>Category:       kern
>Synopsis:       fatal trap 12 / page fault
>Confidential:   no
>Severity:       critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Jul 05 20:50:01 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     Jeff Blaine
>Release:        4.0-RELEASE
>Organization:
The MITRE Corporation
>Environment:
FreeBSD kickflop 4.0-RELEASE FreeBSD 4.0-RELEASE #4: Sun Jul  2 12:37:52 EDT 2000     root@kickflop:/usr/src/sys/compile/BUNK  i386
>Description:
Machine gateway/firewall/NAT box and is crashing and rebooting every 3 or 4 days,
which makes me very grumpy.  I wish I had the knowledge to fix it.  Feel free to
steer me through kgdb goop to help you, please.

(kgdb) symbol-file kernel
Reading symbols from kernel...(no debugging symbols found)...done.
(kgdb) exec-file /var/crash/kernel.0
(kgdb) core-file /var/crash/vmcore.0
IdlePTD 2617344
initial pcb at 2184c0
panicstr: page fault
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address   = 0x8
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xc0171894
stack pointer           = 0x10:0xc01fed04
frame pointer           = 0x10:0xc01fed0c
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         = Idle
interrupt mask          = 
trap number             = 12
panic: page fault

syncing disks... 8 8 4 
done
Uptime: 16h1m14s

dumping to dev #ad/0x20001, offset 196608
dump ata0: resetting devices .. done
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 
---
#0  0xc0132ec8 in boot ()
(kgdb) where
#0  0xc0132ec8 in boot ()
#1  0xc013324c in poweroff_wait ()
#2  0xc01ccda5 in trap_fatal ()
#3  0xc01cca7d in trap_pfault ()
#4  0xc01cc647 in trap ()
#5  0xc0171894 in arpintr ()
(kgdb) quit

Copyright (c) 1992-2000 The FreeBSD Project.
Copyright (c) 1982, 1986, 1989, 1991, 1993
        The Regents of the University of California. All rights reserved.
FreeBSD 4.0-RELEASE #4: Sun Jul  2 12:37:52 EDT 2000
    root@kickflop:/usr/src/sys/compile/BUNK
Timecounter "i8254"  frequency 1193182 Hz
Timecounter "TSC"  frequency 132631961 Hz
CPU: Pentium/P54C (132.63-MHz 586-class CPU)
  Origin = "GenuineIntel"  Id = 0x52c  Stepping = 12
  Features=0x1bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8>
real memory  = 33554432 (32768K bytes)
config> di pcic0
No such device: pcic0
Invalid command or syntax.  Type `?' for help.
config> di lnc0
No such device: lnc0
Invalid command or syntax.  Type `?' for help.
config> di le0
No such device: le0
Invalid command or syntax.  Type `?' for help.
config> di ie0
No such device: ie0
Invalid command or syntax.  Type `?' for help.
config> di fe0
No such device: fe0
Invalid command or syntax.  Type `?' for help.
config> di ed0
No such device: ed0
Invalid command or syntax.  Type `?' for help.
config> di cs0
No such device: cs0
Invalid command or syntax.  Type `?' for help.
config> di bt0
No such device: bt0
Invalid command or syntax.  Type `?' for help.
config> di aic0
No such device: aic0
Invalid command or syntax.  Type `?' for help.
config> di aha0
No such device: aha0
Invalid command or syntax.  Type `?' for help.
config> di adv0
No such device: adv0
Invalid command or syntax.  Type `?' for help.
config> en sn0
No such device: sn0
Invalid command or syntax.  Type `?' for help.
config> po sn0 0x400
No such device: sn0
Invalid command or syntax.  Type `?' for help.
config> ir sn0 10
No such device: sn0
Invalid command or syntax.  Type `?' for help.
config> f sn0 0
No such device: sn0
Invalid command or syntax.  Type `?' for help.
config> q
avail memory = 30208000 (29500K bytes)
Preloaded elf kernel "kernel" at 0xc026d000.
Preloaded userconfig_script "/boot/kernel.conf" at 0xc026d09c.
Intel Pentium detected, installing workaround for F00F bug
md0: Malloc disk
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Host to PCI bridge> on motherboard
pci0: <PCI bus> on pcib0
isab0: <Intel 82371FB PCI to ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
pci0: <ATI Mach64-CT graphics accelerator> at 8.0
rl0: <Accton MPX 5030/5038 10/100BaseTX> port 0xf400-0xf4ff mem 0xfffbf800-0xfff
bf8ff irq 10 at device 13.0 on pci0
rl0: Ethernet address: 00:e0:29:5f:ab:88
miibus0: <MII bus> on rl0
rlphy0: <RealTek internal media interface> on miibus0
rlphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
rl1: <Accton MPX 5030/5038 10/100BaseTX> port 0xf800-0xf8ff mem 0xfffbfc00-0xfff
bfcff irq 11 at device 16.0 on pci0
rl1: Ethernet address: 00:e0:29:5f:ab:ff
miibus1: <MII bus> on rl1
rlphy1: <RealTek internal media interface> on miibus1
rlphy1:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
fdc0: <NEC 72065B or clone> at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on isa0
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
ata0 at port 0x1f0-0x1f7,0x3f6 irq 14 on isa0
atkbdc0: <keyboard controller (i8042)> at port 0x60-0x6f on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
sc0: <System console> on isa0
sc0: VGA <16 virtual consoles, flags=0x200>
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> at port 0x378-0x37f irq 7 on isa0
ppc0: Generic chipset (NIBBLE-only) in COMPATIBLE mode
ppi0: <Parallel I/O> on ppbus0
unknown0: <WSS/SB> at port 0x534-0x537,0x388-0x38b,0x220-0x22f irq 5 drq 1,0 on 
isa0
unknown1: <Game> at port 0x200-0x207 on isa0
unknown2: <Ctrl> at port 0xf00-0xf07 on isa0
unknown3: <MPU> at port 0x330-0x331 irq 9 on isa0
IP packet filtering initialized, divert enabled, rule-based forwarding enabled, 
default to accept, logging disabled
ad0: 2015MB <ST32140A> [4095/16/63] at ata0-master using BIOSPIO
Mounting root from ufs:/dev/ad0s1a
>How-To-Repeat:
This crash is from 3PM today.  I was running tinyfugue connected to 1 MUD.
I may have had tinyfugue backgrounded and may have been running PINE.  Very
light network traffic and just myself on the machine (which is the norm
unless I am playing some network games).
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted:


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