linux-kernel - Re: [BUG] 2.6.24-rc2-mm1

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Message-ID: <Pine.LNX.4.64.0801021249560.21526@schroedinger.engr.sgi.com>
Date:	Wed, 2 Jan 2008 12:51:20 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	Torsten Kaiser <just.for.lkml@...glemail.com>
cc:	root <root@...d.programming.kicks-ass.net>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Andy Whitcroft <apw@...dowen.org>,
	Jan Blunck <jblunck@...e.de>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [BUG] 2.6.24-rc2-mm1 - kernel bug on nfs v4

On Wed, 2 Jan 2008, Torsten Kaiser wrote:

> I just tested something with vanilla 2.6.24-rc6 and had the same problem.
> Should this patch, or something similar be included for 2.6.24?

Such a patch is in Andrew's tree.

2.6.24-rc6-mm1:

tatic struct kmem_cache_node *early_kmem_cache_node_alloc(gfp_t gfpflags,
                                                           int node)
{
        struct page *page;
        struct kmem_cache_node *n;
        unsigned long flags;
...

    /*
         * lockdep requires consistent irq usage for each lock
         * so even though there cannot be a race this early in
         * the boot sequence, we still disable irqs.
         */
        local_irq_save(flags);
        add_partial(kmalloc_caches, page, 0);
        local_irq_restore(flags);
        return n;
}
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