Date: Thu, 4 May 2006 21:25:28 +0200
From: Ingo Molnar <mingo@elte.hu>
To: Bob Picco <bob.picco@hp.com>
Cc: Dave Hansen <haveblue@us.ibm.com>, Nick Piggin <nickpiggin@yahoo.com.au>,
       "Martin J. Bligh" <mbligh@mbligh.org>, Andi Kleen <ak@suse.de>,
       linux-kernel@vger.kernel.org, Andrew Morton <akpm@osdl.org>,
       Linux Memory Management <linux-mm@kvack.org>,
       Andy Whitcroft <apw@shadowen.org>
Subject: Re: assert/crash in __rmqueue() when enabling CONFIG_NUMA
Message-ID: <20060504192528.GA26759@elte.hu>
References: <20060419112130.GA22648@elte.hu> <p73aca07whs.fsf@bragg.suse.de> <20060502070618.GA10749@elte.hu> <200605020905.29400.ak@suse.de> <44576688.6050607@mbligh.org> <44576BF5.8070903@yahoo.com.au> <20060504013239.GG19859@localhost> <1146756066.22503.17.camel@localhost.localdomain> <20060504154652.GA4530@localhost>
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* Bob Picco <bob.picco@hp.com> wrote:

> Dave Hansen wrote:	[Thu May 04 2006, 11:21:06AM EDT]
> > I haven't thought through it completely, but these two lines worry me:
> > 
> > > + start = pgdat->node_start_pfn & ~((1 << (MAX_ORDER - 1)) - 1);
> > > + end = start + pgdat->node_spanned_pages;
> > 
> > Should the "end" be based off of the original "start", or the aligned
> > "start"?
>
> Yes. I failed to quilt refresh before sending. You mean end should be 
> end = pgdat->node_start_pfn + pgdat->node_spanned_pages before 
> rounding up.

do you have an updated patch i should try?

	Ingo
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