Floppy Access -> Kernel Panic, A7V8X Motherboard
Hi!
I have a really tricky problem and I have no idea how to solve it.
Perhaps someone can give me a hint or even solve it.
I upgraded an old (well working) server with a new motherboard,
CPU and RAM. The rest stayed (HDDs and OS, FDD, NICs, etc).
Problem:
========
After a while accessing the floppy (eg formatting a floppy with fdformat)
I get a kernel panic:
---
... NULL POINTER reference ...
Unable to handle kernel paging request at virtual address ...
EIP ...
Process swapper
Kernel panic: Aiee, killing interrupt handler!
In interrupt handler - not syncing
---
Error not everytime at the same floppy position, but after a while.
So its reproducable ...
Things done to solve the problem (nothing worked):
==================================================
1) changed floppy-disk
2) changed FDD-cable
3) changed FDD
4) MEMTEST86 (RAM passed all tests)
5) tried different kernel parameters:
- acpi=off
- pci=biosirq (as mentioned in dmesg-output)
- pci=noacpi
Presumptions:
=============
There are some strange kernel messages in conjunction with
the IDE-subsystem and - as far as I know - the FDD is
also part of that. The server crashed (kernel panic)
also once without floppy access (dont known the reason
perhaps HDD-access).
So I think, that the problem has something to do
with the motherboard, more exact: with the
IDE-subsystem and/or
IRQ-controller and/or
the chipset (VIA KT400 + VIA VT8235)
Configuration:
==============
[Motherboard] Asus A7V8X, Chipset: VIA KT400 + VIA VT8235
[RAM] 1x512MB DDR-PC2100
[CPU] Athlon XP 2100+, 1733 MHz
[OS] Debian 3.0 Woody with updated Woody-kernel:
Linux myhost 2.4.20-1-686 #1 Tue Mar 18 23:18:53 EST 2003 i686
unknown
Technical details:
==================
Kernel output (this "spurious 8259A interrupt: IRQ7"-message looks also
strange)
-------------
Linux version 2.4.20-1-686 (herbert@gondolin) (gcc version 2.95.4 20011002
(Debian prerelease)) #1 Tue Mar 18 23:18:53 EST 2003
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 000000001fffc000 (usable)
BIOS-e820: 000000001fffc000 - 000000001ffff000 (ACPI data)
BIOS-e820: 000000001ffff000 - 0000000020000000 (ACPI NVS)
BIOS-e820: 00000000fec00000 - 00000000fec01000 (reserved)
BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
BIOS-e820: 00000000ffff0000 - 0000000100000000 (reserved)
0MB HIGHMEM available.
511MB LOWMEM available.
On node 0 totalpages: 131068
zone(0): 4096 pages.
zone(1): 126972 pages.
zone(2): 0 pages.
Kernel command line: auto BOOT_IMAGE=Linux ro root=302
Found and enabled local APIC!
Initializing CPU#0
Detected 1733.438 MHz processor.
Console: colour VGA+ 80x25
Calibrating delay loop... 3460.30 BogoMIPS
Memory: 513268k/524272k available (839k kernel code, 10616k reserved, 416k
data, 92k init, 0k highmem)
Dentry cache hash table entries: 65536 (order: 7, 524288 bytes)
Inode cache hash table entries: 32768 (order: 6, 262144 bytes)
Mount-cache hash table entries: 8192 (order: 4, 65536 bytes)
Buffer-cache hash table entries: 32768 (order: 5, 131072 bytes)
Page-cache hash table entries: 131072 (order: 7, 524288 bytes)
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 256K (64 bytes/line)
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU: After generic, caps: 0383fbff c1c3fbff 00000000 00000000
CPU: Common caps: 0383fbff c1c3fbff 00000000 00000000
CPU: AMD Athlon(TM) XP 2100+ stepping 02
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
enabled ExtINT on CPU#0
ESR value before enabling vector: 00000000
ESR value after enabling vector: 00000000
Using local APIC timer interrupts.
calibrating APIC timer ...
..... CPU clock speed is 1733.4719 MHz.
..... host bus clock speed is 266.6880 MHz.
cpu: 0, clocks: 2666880, slice: 1333440
CPU0<T0:2666880,T1:1333440,D:0,S:1333440,C:2666880>
mtrr: v1.40 (20010327) Richard Gooch (rgooch@atnf.csiro.au)
mtrr: detected mtrr type: Intel
PCI: PCI BIOS revision 2.10 entry at 0xf1720, last bus=1
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI: Using IRQ router VIA [1106/3177] at 00:11.0
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
Starting kswapd
VFS: Diskquotas version dquot_6.4.0 initialized
devfs: v1.12c (20020818) Richard Gooch (rgooch@atnf.csiro.au)
devfs: boot_options: 0x0
Detected PS/2 Mouse Port.
pty: 256 Unix98 ptys configured
Serial driver version 5.05c (2001-07-08) with HUB-6 MANY_PORTS MULTIPORT
SHARE_IRQ SERIAL_PCI enabled
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS01 at 0x02f8 (irq = 3) is a 16550A
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
Cronyx Ltd, Synchronous PPP and CISCO HDLC (c) 1994
Linux port (c) 1998 Building Number Three Ltd & Jan "Yenya" Kasprzak.
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP, IGMP
IP: routing cache hash table of 4096 buckets, 32Kbytes
TCP: Hash tables configured (established 32768 bind 32768)
Linux IP multicast router 0.06 plus PIM-SM
RAMDISK: cramfs filesystem found at block 0
RAMDISK: Loading 2824 blocks [1 disk] into ram disk... done.
Freeing initrd memory: 2824k freed
VFS: Mounted root (cramfs filesystem).
Freeing unused kernel memory: 92k freed
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
Journalled Block Device driver loaded
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
VP_IDE: IDE controller on PCI bus 00 dev 89
PCI: No IRQ known for interrupt pin A of device 00:11.1. Please try using
pci=biosirq.
VP_IDE: chipset revision 6
VP_IDE: not 100% native mode: will probe irqs later
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
VP_IDE: VIA vt8235 (rev 00) IDE UDMA133 controller on pci00:11.1
ide0: BM-DMA at 0xb000-0xb007, BIOS settings: hda:DMA, hdb:pio
ide1: BM-DMA at 0xb008-0xb00f, BIOS settings: hdc:DMA, hdd:pio
hda: IBM-DTLA-307045, ATA DISK drive
hdc: ST328040A, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
blk: queue e084ef44, I/O limit 4095Mb (mask 0xffffffff)
hda: 90069840 sectors (46116 MB) w/1916KiB Cache, CHS=89355/16/63, UDMA(100)
blk: queue e084f2a8, I/O limit 4095Mb (mask 0xffffffff)
hdc: 55704096 sectors (28520 MB) w/512KiB Cache, CHS=55262/16/63, UDMA(66)
Partition check:
/dev/ide/host0/bus0/target0/lun0: [PTBL] [5606/255/63] p1 p2 p3
/dev/ide/host0/bus1/target0/lun0: p1 p2 p3 p4
kjournald starting. Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
Adding Swap: 497972k swap-space (priority -1)
EXT3 FS 2.4-0.9.19, 19 August 2002 on ide0(3,2), internal journal
Real Time Clock Driver v1.10e
spurious 8259A interrupt: IRQ7.
ne2k-pci.c:v1.02 10/19/2000 D. Becker/P. Gortmaker
http://www.scyld.com/network/ne2k-pci.html
PCI: Found IRQ 11 for device 00:0d.0
eth0: Winbond 89C940 found at 0xd800, IRQ 11, 00:40:95:03:B4:E3.
PCI: Found IRQ 10 for device 00:0e.0
3c59x: Donald Becker and others. www.scyld.com/network/vortex.html
00:0e.0: 3Com PCI 3c905B Cyclone 100baseTx at 0xd400. Vers LK1.1.16
parport0: PC-style at 0x378 (0x778) [PCSPP,TRISTATE]
parport0: irq 7 detected
ip_tables: (C) 2000-2002 Netfilter core team
kjournald starting. Commit interval 5 seconds
EXT3 FS 2.4-0.9.19, 19 August 2002 on ide0(3,3), internal journal
EXT3-fs: mounted filesystem with ordered data mode.
kjournald starting. Commit interval 5 seconds
EXT3 FS 2.4-0.9.19, 19 August 2002 on ide1(22,4), internal journal
EXT3-fs: mounted filesystem with ordered data mode.
Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
hdparm output
-------------
# hdparm /dev/hda
/dev/hda:
multcount = 0 (off)
I/O support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 0 (off)
nowerr = 0 (off)
readonly = 0 (off)
readahead = 8 (on)
geometry = 5606/255/63, sectors = 90069840, start = 0
busstate = 1 (on)
# hdparm /dev/hdc
/dev/hdc:
multcount = 0 (off)
I/O support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 0 (off)
nowerr = 0 (off)
readonly = 0 (off)
readahead = 8 (on)
geometry = 55262/16/63, sectors = 55704096, start = 0
busstate = 1 (on)
=================
THANKS in advance for any hint!
Regards, Christoph.
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