linux-kernel - kmem_cache_init failure (was Re: 2.6.21-mm1)

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Message-ID: <20070508172233.GA11683@slug>
Date:	Tue, 8 May 2007 19:22:33 +0200
From:	Frederik Deweerdt <deweerdt@...e.fr>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, jbeulich@...ell.com, ak@...e.de
Subject: kmem_cache_init failure (was Re: 2.6.21-mm1)

On Sat, May 05, 2007 at 01:49:55AM -0700, Andrew Morton wrote:
> 
> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.21/2.6.21-mm1/
> 
Hi all,

My computer fails early at boot with a stack along the lines of:

kmem_cache_zalloc
kmem_cache_create
kmem_cache_init
start_kernel

eip is at cache_calloc_refill+0x3e1 which is the 
slabp->colouroff = colouroff; in alloc_slabmgmt()

I've bisected it down to the x86_64-mm-cpa-kerneltext.patch and the 

+       if (!pte_present(*kpte))
+               return 0;

part in particular. Dotconfig and cpuinfo are available at
http://fdeweerdt.free.fr/kmem_prob/.  Any ideas?

Regards,
Frederik
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