Re: [BUG] 2.6.26-rc5-mm2 - kernel BUG at arch/x86/kernel/setup.c:388!

Kamalesh Babulal
2008-06-12T06:56:08Z

Vegard Nossum wrote:
> On 6/11/08, Dave Hansen <dave@linux.vnet.ibm.com> wrote:
>> On Wed, 2008-06-11 at 23:26 +0530, Kamalesh Babulal wrote:
>> > Hi Andrew,
>> >
>> > The 2.6.26-rc5-mm2 kernel panic's, while booting up on the x86_64
>> > box with the attached .config file.
>>
>>
>> Just to save everyone the trouble, it looks like this is a new BUG_ON().
>> ﻿
>> http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.26-rc5/2.6.26-rc5-mm2/broken-out/fix-x86_64-splat.patch
>>
>> The machine in question is a single-node machine, but with
>> CONFIG_NUMA=y.
>>
>
> Yes. Sorry, I already responded in a separate e-mail (see below), but
> that obviously missed all the Ccs. So here it goes again...:
>
> I'm betting
>
> commit a953e4597abd51b74c99e0e3b7074532a60fd031
> Author: Mike Travis <travis@sgi.com>
> Date: Mon May 12 21:21:12 2008 +0200
>
> sched: replace MAX_NUMNODES with nr_node_ids in kernel/sched.c
>
> will fix this if it's not in -mm2 already.
>
> The BUG() is simply there to prevent silent corruption. Mike already
> has a patch that changes it to a WARN(), but it obviously didn't get
> through (either)...
>
>
> Vegard
Hi,

Thanks, the patch fixes the kernel oops.

>
>
> On 6/11/08, Vegard Nossum <vegard.nossum@gmail.com> wrote:
>> On 6/9/08, Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> wrote:
>> > Hi Andrew,
>> >
>> > The 2.6.26-rc5-mm2 kernel panic's, while booting up on the x86_64
>> > box with the attached .config file.
>>
>> (Please apologize for the strange way of replying to this message. It
>> seems that LKML gave up delivering to my address, so I'm currently
>> reading off lkml.org.)
>>
>> This should already be fixed, but Andrew refused to apply the patch
>> before releasing the -mm1 (and -mm2 apparently). I'm attaching the
>> patch, can you see if it helps?
>>
>> Thanks.
>>
>>
>> Vegard
>

--
Thanks & Regards,
Kamalesh Babulal,
Linux Technology Center,
IBM, ISTL.