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

Torsten Kaiser
2007-11-21T19:48:52Z

On Nov 21, 2007 8:22 PM, Len Brown <lenb@kernel.org> wrote:
> On Wednesday 21 November 2007 01:18, Andrew Morton wrote:
> > On Wed, 21 Nov 2007 11:41:23 +0530 Kamalesh Babulal <kamalesh@linux.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