Re: PROBLEM: Oops.. NULL pointer reference in 2.4.20-ac1

From: Alan Cox (
Date: Sun Dec 08 2002 - 09:19:33 EST

On Sun, 2002-12-08 at 12:35, Simon Ward wrote:
> The kernel 2.4.20 with the -ac1 patch results in a kernel panic. I have
> tried kernel 2.4.19 and a vanilla 2.4.20 and these both worked fine.
> The problem appears to be after (or while) the IDE interfaces are
> probed. The IDE chipset is (I think) ALI M1543. It's part of the ALI
> Aladdin V chipset on an Asus P5A-B motherboard anyway, if that means
> anything to you.

Looks like your system returned a totally bogus IRQ for the interface.
Are you enabling ACPI by any chance ?

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