Date: Tue, 5 Mar 1996 08:25:19 -0800 (PST) From: "Brian N. Handy" <handy@sag.space.lockheed.com> To: freebsd-current@freebsd.org Subject: Whee! Page Fault! Message-ID: <Pine.OSF.3.91.960305081753.2392B-100000@sag.space.lockheed.com>
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Hi Folks,
I'm in cahoots with Michael Smith trying to run IDL on a FreeBSD box. As
such...I'm running a -current kernel. I got the 2.2.0-960303 SNAP, then
yesterday afternoon supped the sys bits. Then...
I changed my config file to match my equipment. Compiled new kernel.
Seems to work, doesn't complain about anything.
Start an ijppp session. One virtual terminal is doing that. Another is
fetching XFree86 from somewhere. The third is me, wandering around a
CD looking for some other stuff.
I did an 'ls' on the CD and got a page fault, kernel panic, a window of
goodies flies by and I reboot. I haven't had a kernel panic in so long, I
figured maybe I'd better report this one to someone. SOOOO...here's what
we'll put here:
(1) My rendition of the page fault, which I wrote down
(2) My kernel config file
(3) dmesg
Talked to Nate about this, he conjectured that maybe John Dyson's changes
yesterday could have fixed this...but here's a data point. Advice is
always appreciated. I'm thinking about supping the latest changes in sys
and trying again. Keep throwing the dice until I win! :-) Let me know
if this is just a spectacularly dumb idea. I do need to run -current to
get all the linuxulator stuff working. :-7
Brian
PS: Hardware: ASUS-PCI/I-P55TP4N, 586DX133, 16MB, NCR 53c810,
Quantum Atlas 2.1GB, Sony 1076s SCSI CD, STB Vel64
vid card
====================================================================
(1) The page fault:
Fatal Trap 12: page fault while in kernel mode
fault virtual address = 0xf089800d
fault code = supervisor mode, page not present
instruction pointer = 0x8:0xf0103c2b
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 = 417 (ls)
interrupt mask =
panic: page fault
(2) Kernel config
#
# GENERIC -- Generic machine with WD/AHx/NCR/BTx family disks
#
# $Id: GENERIC,v 1.60 1996/01/20 06:14:33 nate Exp $
#
machine "i386"
#cpu "I386_CPU"
#cpu "I486_CPU"
cpu "I586_CPU"
#cpu "I686_CPU"
ident LESPAUL
maxusers 10
#options MATH_EMULATE #Support for x87 emulation
options INET #InterNETworking
options FFS #Berkeley Fast Filesystem
options NFS #Network Filesystem
options MSDOSFS #MSDOS Filesystem
options "CD9660" #ISO 9660 Filesystem
options PROCFS #Process filesystem
options "COMPAT_43" #Compatible with BSD 4.3 [KEEP THIS!]
options SCSI_DELAY=15 #Be pessimistic about Joe SCSI device
options BOUNCE_BUFFERS #include support for DMA bounce buffers
options UCONSOLE #Allow users to grab the console
options LINUX
config kernel root on wd0
controller isa0
controller eisa0
controller pci0
controller fdc0 at isa? port "IO_FD1" bio irq 6 drq 2 vector fdintr
disk fd0 at fdc0 drive 0
disk fd1 at fdc0 drive 1
tape ft0 at fdc0 drive 2
#controller wdc0 at isa? port "IO_WD1" bio irq 14 vector wdintr
#disk wd0 at wdc0 drive 0
#disk wd1 at wdc0 drive 1
#controller wdc1 at isa? port "IO_WD2" bio irq 15 vector wdintr
#disk wd2 at wdc1 drive 0
#disk wd3 at wdc1 drive 1
#options ATAPI #Enable ATAPI support for IDE bus
#device wcd0 #IDE CD-ROM
# A single entry for any of these controllers (ncr, ahb, ahc) is sufficient
# for any number of installed devices.
controller ncr0
controller ahb0
controller ahc0
#controller bt0 at isa? port "IO_BT0" bio irq ? vector bt_isa_intr
#controller uha0 at isa? port "IO_UHA0" bio irq ? drq 5 vector uhaintr
#controller aha0 at isa? port "IO_AHA0" bio irq ? drq 5 vector ahaintr
#controller aic0 at isa? port 0x340 bio irq 11 vector aicintr
#controller nca0 at isa? port 0x1f88 bio irq 10 vector ncaintr
#controller nca1 at isa? port 0x350 bio irq 5 vector ncaintr
#controller sea0 at isa? bio irq 5 iomem 0xc8000 iosiz 0x2000 vector seaintr
controller scbus0
device sd0
device od0
device st0
device cd0 #Only need one of these, the code dynamically grows
#device wt0 at isa? port 0x300 bio irq 5 drq 1 vector wtintr
#device mcd0 at isa? port 0x300 bio irq 10 vector mcdintr
#device mcd1 at isa? port 0x340 bio irq 11 vector mcdintr
#controller matcd0 at isa? port 0x230 bio
#device scd0 at isa? port 0x230 bio
# syscons is the default console driver, resembling an SCO console
device sc0 at isa? port "IO_KBD" tty irq 1 vector scintr
# Enable this and PCVT_FREEBSD for pcvt vt220 compatible console driver
#device vt0 at isa? port "IO_KBD" tty irq 1 vector pcrint
#options PCVT_FREEBSD=210 # pcvt running on FreeBSD >= 2.0.5
#options XSERVER # include code for XFree86
#options FAT_CURSOR # start with block cursor
# If you have a ThinkPAD, uncomment this along with the rest of the PCVT lines
#options PCVT_SCANSET=2 # IBM keyboards are non-std
# Mandatory, don't remove
device npx0 at isa? port "IO_NPX" irq 13 vector npxintr
device sio0 at isa? port "IO_COM1" tty irq 4 vector siointr
device sio1 at isa? port "IO_COM2" tty irq 3 vector siointr
#device sio2 at isa? port "IO_COM3" tty irq 5 vector siointr
#device sio3 at isa? port "IO_COM4" tty irq 9 vector siointr
device lpt0 at isa? port? tty irq 7 vector lptintr
#device lpt1 at isa? port? tty
#device lpt2 at isa? port? tty
# Order is important here due to intrusive probes, do *not* alphabetize
# this list of network interfaces until the probes have been fixed.
# Right now it appears that the ie0 must be probed before ep0. See
# revision 1.20 of this file.
device de0
device fxp0
#device ed0 at isa? port 0x280 net irq 5 iomem 0xd8000 vector edintr
#device ed1 at isa? port 0x300 net irq 5 iomem 0xd8000 vector edintr
#device ie0 at isa? port 0x360 net irq 7 iomem 0xd0000 vector ieintr
#device ep0 at isa? port 0x300 net irq 10 vector epintr
#device ix0 at isa? port 0x300 net irq 10 iomem 0xd0000 iosiz 32768 vector ixintr
#device le0 at isa? port 0x300 net irq 5 iomem 0xd0000 vector le_intr
#device lnc0 at isa? port 0x280 net irq 10 drq 0 vector lncintr
#device lnc1 at isa? port 0x300 net irq 10 drq 0 vector lncintr
#device ze0 at isa? port 0x300 net irq 5 iomem 0xd8000 vector zeintr
#device zp0 at isa? port 0x300 net irq 10 iomem 0xd8000 vector zpintr
pseudo-device loop
pseudo-device ether
pseudo-device log
pseudo-device sl 1
# ijppp uses tun instead of ppp device
pseudo-device ppp 1
pseudo-device tun 1
pseudo-device pty 16
# keep this if you want to be able to continue to use /stand/sysinstall
pseudo-device gzip # Exec gzipped a.out's
(3) dmesg
FreeBSD 2.2-CURRENT #0: Tue Mar 5 17:02:32 1996
root@handy.space.lockheed.com:/usr/2.2.0-CURRENT/src/sys/compile/LESPAUL
CPU: Pentium (132.61-MHz 586-class CPU)
Origin = "GenuineIntel" Id = 0x52b Stepping=11
Features=0x1bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8>
real memory = 16777216 (16384K bytes)
avail memory = 14807040 (14460K bytes)
Probing for devices on PCI bus 0:
chip0 <Intel 82437 (Triton) PCI cache memory controller> rev 2 on pci0:0
chip1 <Intel 82371 (Triton) PCI-ISA bridge> rev 2 on pci0:7
pci0:7: Intel Corporation, device=0x1230, class=storage (ide) [no driver assigned]
vga0 <VGA-compatible display device> rev 0 int a irq 10 on pci0:9
ncr0 <ncr 53c810 scsi> rev 2 int a irq 11 on pci0:12
(ncr0:0:0): "Quantum XP32150 81HB" type 0 fixed SCSI 2
sd0(ncr0:0:0): Direct-Access
sd0(ncr0:0:0): FAST SCSI-2 100ns (10 Mb/sec) offset 8.
2050MB (4199760 512 byte sectors)
(ncr0:6:0): "SONY CD-ROM CDU-76S 1.1c" type 5 removable SCSI 2
cd0(ncr0:6:0): CD-ROM
cd0(ncr0:6:0): 200ns (5 Mb/sec) offset 8.
cd0(ncr0:6:0): UNIT ATTENTION asc:28,0
cd0(ncr0:6:0): Not ready to ready transition, medium may have changed
cd present [400000 x 2048 byte records]
Probing for devices on the ISA bus:
sc0 at 0x60-0x6f irq 1 on motherboard
sc0: VGA color <16 virtual consoles, flags=0x0>
sio0 at 0x3f8-0x3ff irq 4 on isa
sio0: type 16550A
sio1 at 0x2f8-0x2ff irq 3 on isa
sio1: type 16550A
lpt0 at 0x378-0x37f irq 7 on isa
lpt0: Interrupt-driven port
lp0: TCP/IP capable interface
fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
fdc0: NEC 72065B
fd0: 1.44MB 3.5in
npx0 on motherboard
npx0: INT 16 interface
changing root device to sd0a
new masks: bio c0000840, tty c003009a, net c003009a
WARNING: / was not properly dismounted.
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