Bug 28550

Summary:	Boot: Fatal Trap 12: page fault while in kernel mode
Product:	Base System	Reporter:	mikea
Component:	i386	Assignee:	freebsd-bugs (Nobody) <bugs>
Status:	Closed FIXED
Severity:	Affects Only Me
Priority:	Normal
Version:	4.3-STABLE
Hardware:	Any
OS:	Any

Description mikea 2001-06-30 20:10:00 UTC

	
	during boot, while kernel is writing device discovery
	lines to console, system falls into kernel debugger
	with the following on the screen:
ppi0: <Parallel I/O> on ppbus0
Fatal trap 12: page fault while in kernel mode
mp_lock=00000003; cpuid=0; lapic.id=00000000
fault_virtualaddress	= 0x4006
faultcode		= supervisor read; page not present
instruction pointer	= 0x8:0xc0324906
stack pointer		= 0c10:0xc04d42ae0
frame pointer		= 0c10:0xc04d2b0c
code segment		= base rx0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, def32 1; gran 1
processor eflags	= interrupt enabled, resume, IOPL=0
current process		= 0 (swapper)
interrupt mask		= net tty bio cam <- SMP:XXX
kernel			= type 12 trap, code=0
stopped at bcmp+0x16: 	repecmpsl 		(%esi),%es:(%edi)

Kernel compiled before yesterday's cvsup works fine. Recompiled
and reinstalled new kernel to see if the fault was repeatable.
It is: the new kernel fails with the same symptoms.

This line had just been written to console from a boot -v:
"isa_compat: didn't get memory for le"

Typical dmesg follows:
Copyright (c) 1992-2001 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 4.3-STABLE #11: Fri Jun 15 21:49:00 CDT 2001
    root@mikea.ath.cx:/usr/src/sys/compile/MPFW7
Timecounter "i8254"  frequency 1193182 Hz
CPU: Pentium III/Pentium III Xeon/Celeron (868.65-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0x686  Stepping = 6
  Features=0x387fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,PN,MMX,FXSR,SSE>
real memory  = 536805376 (524224K bytes)
avail memory = 517500928 (505372K bytes)
Programming 24 pins in IOAPIC #0
IOAPIC #0 intpin 2 -> irq 0
FreeBSD/SMP: Multiprocessor motherboard
 cpu0 (BSP): apic id:  0, version: 0x00040011, at 0xfee00000
 cpu1 (AP):  apic id:  1, version: 0x00040011, at 0xfee00000
 io0 (APIC): apic id:  2, version: 0x00170011, at 0xfec00000
Preloaded elf kernel "kernel.ok" at 0xc04af000.
netsmb_dev: loaded
Pentium Pro MTRR support enabled
md0: Malloc disk
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Host to PCI bridge> on motherboard
IOAPIC #0 intpin 19 -> irq 2
IOAPIC #0 intpin 18 -> irq 9
IOAPIC #0 intpin 16 -> irq 10
IOAPIC #0 intpin 17 -> irq 11
pci0: <PCI bus> on pcib0
pcib2: <VIA 82C598MVP (Apollo MVP3) PCI-PCI (AGP) bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib2
isab0: <VIA 82C686 PCI-ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <VIA 82C686 ATA66 controller> port 0x9000-0x900f at device 7.1 on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
uhci0: <VIA 83C572 USB controller> port 0x9400-0x941f irq 2 at device 7.2 on pci0
usb0: <VIA 83C572 USB controller> on uhci0
usb0: USB revision 1.0
uhub0: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhid0: WACOM ET-0405-UV1.1-1, rev 1.00/1.11, addr 2, iclass 3/1
uhub1: Texas Instruments UT-USB41 hub, class 9/0, rev 1.00/1.00, addr 3
uhub1: 7 ports with 7 removable, self powered
uhci1: <VIA 83C572 USB controller> port 0x9800-0x981f irq 2 at device 7.3 on pci0
usb1: <VIA 83C572 USB controller> on uhci1
usb1: USB revision 1.0
uhub2: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub2: 2 ports with 2 removable, self powered
pcm0: <VIA VT82C686A> port 0xa400-0xa403,0xa000-0xa003,0x9c00-0x9cff irq 9 at device 7.5 on pci0
atapci1: <Promise ATA100 controller> port 0xbc00-0xbc3f,0xb800-0xb803,0xb400-0xb407,0xb000-0xb003,0xac00-0xac07 mem 0xd8000000-0xd801ffff irq 9 at device 12.0 on pci0
ata2: at 0xac00 on atapci1
ata3: at 0xb400 on atapci1
de0: <Digital 21140 Fast Ethernet> port 0xc000-0xc07f mem 0xd8020000-0xd802007f irq 10 at device 14.0 on pci0
de0: 21140 [10-100Mb/s] pass 1.1
de0: address 00:c0:6d:15:00:38
ed0: <NE2000 PCI Ethernet (ProLAN)> port 0xc400-0xc41f irq 11 at device 15.0 on pci0
ed0: address 00:20:78:1a:9f:55, type NE2000 (16 bit) 
pci0: <NVidia Riva Ultra Vanta TNT2 graphics accelerator> at 16.0 irq 9
ahc0: <Adaptec 2940 SCSI adapter> port 0xc800-0xc8ff mem 0xd8021000-0xd8021fff irq 11 at device 18.0 on pci0
aic7870: Single Channel A, SCSI Id=7, 16/255 SCBs
pcib1: <Host to PCI bridge> on motherboard
pci2: <PCI bus> on pcib1
eisa0: <EISA bus> on motherboard
eisa0: unknown card @@@2a02 (0x00002a02) at slot 9
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
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
kbd0 at atkbd0
psm0: failed to get data.
psm0: <PS/2 Mouse> flags 0x84 irq 12 on atkbdc0
psm0: model Generic PS/2 mouse, device ID 0
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> at port 0x378-0x37f irq 7 on isa0
ppc0: Generic chipset (EPP/NIBBLE) in COMPATIBLE mode
plip0: <PLIP network interface> on ppbus0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
pca0 at port 0x40 on isa0
APIC_IO: Testing 8254 interrupt delivery
APIC_IO: routing 8254 via IOAPIC #0 intpin 2
IP packet filtering initialized, divert enabled, rule-based forwarding enabled, default to accept, logging limited to 100 packets/entry by default
DUMMYNET initialized (010124)
IP Filter: v3.4.16 initialized.  Default = pass all, Logging = enabled
SMP: AP CPU #1 Launched!
ad0: 29333MB <WDC WD307AA> [59598/16/63] at ata0-master UDMA66
ad1: 29196MB <SAMSUNG SV3064D> [59320/16/63] at ata0-slave UDMA66
acd0: CDROM <Pioneer CD-ROM ATAPI Model DR-744 0102> at ata1-master using PIO4
Waiting 5 seconds for SCSI devices to settle
de0: enabling 10baseT port
sa0 at ahc0 bus 0 target 2 lun 0
sa0: <HP HP35480A 1109> Removable Sequential Access SCSI-2 device 
sa0: 5.000MB/s transfers (5.000MHz, offset 8)
Mounting root from ufs:/dev/ad0s1a
swapon: adding /dev/ad0s1b as swap device
Automatic boot in progress...
/dev/ad0s1a: 
FILESYSTEM CLEAN; SKIPPING CHECKS
/dev/ad0s1a: 
clean, 20313 free 
(1337 frags, 2372 blocks, 0.7% fragmentation)
/dev/ad0s1f: 
FILESYSTEM CLEAN; SKIPPING CHECKS
/dev/ad0s1f: 
clean, 23346592 free 
(63360 frags, 2910404 blocks, 0.2% fragmentation)
/dev/ad0s1e: 
FILESYSTEM CLEAN; SKIPPING CHECKS
/dev/ad0s1e: 
clean, 998312 free 
(352 frags, 124745 blocks, 0.0% fragmentation)
/dev/ad1s1e: 
FILESYSTEM CLEAN; SKIPPING CHECKS
/dev/ad1s1e: 
clean, 6564680 free 
(42168 frags, 815314 blocks, 0.1% fragmentation)
Doing initial network setup:
 hostname
.
de0: enabling 10baseT port
de0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	inet 192.168.1.1 netmask 0xffffff00 broadcast 192.168.1.255
	ether 00:c0:6d:15:00:38 
	media: 10baseT/UTP status: active
	supported media: autoselect 100baseTX <full-duplex> 100baseTX 10baseT/UTP <full-duplex> 10baseT/UTP
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
	inet 127.0.0.1 netmask 0xff000000

Fix: 

I got it to go away by removing from the kernel config file every
device not physically present, and by setting the following
options:
options               MAXDSIZ="(512*1024*1024)"
options               DFLDSIZ="(512*1024*1024)"
which is the amount of RAM on my MP system. 

I have preserved the failing kernel and the config file that was
used to build it.
How-To-Repeat: 	
	Compile and boot a kernel with source from cvsup at 22Jun2001 14:22
	using my kernel config file MPFW7

Comment 1 dwmalone 2001-07-04 16:11:58 UTC

On Sat, Jun 30, 2001 at 02:08:19PM -0500, mikea@mikea.ath.cx wrote:
> >Environment:
> FreeBSD 4.3; most recent cvsup 22Jun2001, 14:22 CDT
> System: FreeBSD mikea.ath.cx 4.3-STABLE FreeBSD 4.3-STABLE #11: Fri Jun 15 21:49:00 CDT 2001 root@mikea.ath.cx:/usr/src/sys/compile/MPFW7 i386

[snip]

> Kernel compiled before yesterday's cvsup works fine. Recompiled
> and reinstalled new kernel to see if the fault was repeatable.
> It is: the new kernel fails with the same symptoms.

Just to check - is 22 June the last cvsup which produced a working
kernel or the first cvsup which failed to produce a working kernel?
Do you have the date from the previous kernel?

(I can't see anything obvious in the commit logs near the 22 June...)

	David.

Comment 2 Doug Barton freebsd_committer

2003-01-23 10:21:48 UTC

State Changed
From-To: open->closed


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