Re: An unexpected IO-APIC was found

["Randy.Dunlap" <rddunlap@osdl.org>]

On Fri, 11 Jul 2003 18:16:22 +0200 Gerbrand Oudenaarden <gerbrand@oudenaarden.nl> wrote:

| Hi,
| 
| dmesg asked me to send a message to this address.
| 
| My configuration:
| 
| Supermicro P4SCA Mainboard
| Single Pentium 4 2,8 GHz Processor
| 3 * 512 MB SDRAM DDR 400
| 4 * 200 GB Maxtor harddisks on Promise TX2000 IDE Raid card
| 1 * 3 GB Compaq IDE harddisk on mainboard IDE controller
| 
| 
| I have the following problem: a few minutes after booting up with this
| custom-compiled 2.4.21 kernel, the system freezes.
| 
| Oops: unable to handle kernel NULL pointer dereference at virtual address
| 00000000
| [...]
| Kernel Panic
| 
| I disabled hyperthreading in the BIOS. When I enable hyperthreading, I am
| getting the same message.
| 
| hope this contributes to something.
| 
| ------ Forwarded Message
| From: root@papaya.engagetv.com (root)
| Date: Fri, 11 Jul 2003 19:43:00 +0200 (CEST)
| To: undisclosed-recipients: ;
| 
| Linux version 2.4.21 (root@papaya) (gcc version 3.3.1 20030626 (Debian
| prerelease)) #5 Fri Jul 11 19:10:24 CEST 2003
...
| testing the IO APIC.......................
| 
| IO APIC #2......
| .... register #00: 02000000
| .......    : physical APIC id: 02
| .......    : Delivery Type: 0
| .......    : LTS          : 0
| .... register #01: 00178020
| .......     : max redirection entries: 0017
| .......     : PRQ implemented: 1
| .......     : IO APIC version: 0020
| .... register #02: 00178020
| .......     : arbitration: 00
| An unexpected IO-APIC was found. If this kernel release is less than
| three months old please report this to linux-smp@vger.kernel.org

Hi,

This unexpected IO APIC has already been fixed.
If you want someone to address the kernel panic (above),
please send the full Oops/panic message text.

--
~Randy