linux-kernel - Re: 2.6.24-rc3-mm1 - Kernel Panic on IO-APIC

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Date:	Wed, 21 Nov 2007 20:48:42 +0100
From:	"Torsten Kaiser" <just.for.lkml@...glemail.com>
To:	"Len Brown" <lenb@...nel.org>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Kamalesh Babulal" <kamalesh@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org, "Andy Whitcroft" <apw@...dowen.org>,
	"Balbir Singh" <balbir@...ux.vnet.ibm.com>,
	linux-acpi@...r.kernel.org, "Thomas Gleixner" <tglx@...utronix.de>,
	"Ingo Molnar" <mingo@...e.hu>
Subject: Re: 2.6.24-rc3-mm1 - Kernel Panic on IO-APIC

On Nov 21, 2007 8:22 PM, Len Brown <lenb@...nel.org> wrote:
> On Wednesday 21 November 2007 01:18, Andrew Morton wrote:
> > On Wed, 21 Nov 2007 11:41:23 +0530 Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com> wrote:
>
> > > SMP alternatives: switching to UP code
> > > ACPI: Core revision 20070126
> > > ..MP-BIOS bug: 8254 timer not connected to IO-APIC
>
> did previous kernels print this too?

Not since my last BIOS upgrade.

This is from what dmesg's I still had laying around:
2.6.22-rc6-mm1: No
2.6.23-rc1-mm1, 2.6.23-rc2-mm1, 2.6.23-rc3-mm1: Yes
2.6.23-rc3-mm1 after BIOS upgrade: No
2.6.23-rc4-mm1...2.6.24-rc2-mm1: No

> > > Kernel panic - not syncing: IO-APIC + timer doesn't work! Try using the 'noapic' kernel parameter
> >
> > ACPI or x86 breakage, I guess.
>
> If you suspect ACPI breakage, then try "acpi=off" or "acpi=noirq".

ACPI doesn't look guilty.
acpi=noirq:
[   39.905884] Freeing SMP alternatives: 28k freed
[   39.910674] ACPI: Core revision 20070126
[   39.916542] ACPI: setting ELCR to 0e20 (from 0c20)
[   39.921855] ExtINT not setup in hardware but reported by MP table
[   39.928244] ..MP-BIOS bug: 8254 timer not connected to IO-APIC
[   39.934586] Kernel panic - not syncing: IO-APIC + timer doesn't
work! Try using the 'noapic' kernel parameter
[   39.934587]

acpi=off:
[    0.000000] Freeing SMP alternatives: 28k freed
[    0.000000] ExtINT not setup in hardware but reported by MP table
[    0.000000] ..MP-BIOS bug: 8254 timer not connected to IO-APIC
[    0.000000] Kernel panic - not syncing: IO-APIC + timer doesn't
work! Try using the 'noapic' kernel parameter
[    0.000000]

Torsten
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