* Borislav Petkov <borislav.petkov@xxxxxxx> wrote:
> Hi,
>
> On Thu, Jul 30, 2009 at 04:55:44PM +0530, Sachin Sant wrote:
> > Today's Next failed to boot on a x86_64 box with following traces
> >
> > ACPI: Core revision 20090625
> > BUG: unable to handle kernel NULL pointer dereference at (null)
> > IP: [<ffffffff81328c7b>] set_cpu_sibling_map+0x24f/0x353
>
> I can't trigger it here, please send me your .config. In the meantime,
> you could try the following:
>
> --
> diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
> index 3ede593..5fd57fe 100644
> --- a/arch/x86/kernel/smpboot.c
> +++ b/arch/x86/kernel/smpboot.c
> @@ -1070,6 +1070,7 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
> for_each_possible_cpu(i) {
> zalloc_cpumask_var(&per_cpu(cpu_sibling_map, i), GFP_KERNEL);
> zalloc_cpumask_var(&per_cpu(cpu_core_map, i), GFP_KERNEL);
> + zalloc_cpumask_var(&per_cpu(cpu_node_map, i), GFP_KERNEL);
> zalloc_cpumask_var(&cpu_data(i).llc_shared_map, GFP_KERNEL);
> }
Borislav, this patch:
From 4581c6313c16a38ffcef8bccd6ffbe9598d585b0 Mon Sep 17 00:00:00 2001
From: Andreas Herrmann <andreas.herrmann3@xxxxxxx>
Date: Fri, 24 Jul 2009 10:21:06 +0200
Subject: [PATCH] x86: provide CPU topology information for multi-node processors
arch/x86/include/asm/processor.h | 2 ++
arch/x86/include/asm/smp.h | 6 ++++++
arch/x86/include/asm/topology.h | 2 ++
arch/x86/kernel/cpu/common.c | 2 ++
arch/x86/kernel/cpu/proc.c | 1 +
arch/x86/kernel/smpboot.c | 20 ++++++++++++++++----
6 files changed, 29 insertions(+), 4 deletions(-)
has absolutely _ZERO_ place in the EDAC tree. It was submitted to
the x86 tree and was under discussion - i requested changes to it so
this current form has my NAK.
Please remove it from your tree and generally require your
contributors to submit all arch/x86 patches to the x86 maintainers.
Thanks,
Ingo
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