linux-kernel - Re: [Bug #13666] WARNING: at mm/page_alloc.c:1743 __alloc_pages

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Message-ID: <20090630135851.GA12663@ghostprotocols.net>
Date:	Tue, 30 Jun 2009 10:58:51 -0300
From:	Arnaldo Carvalho de Melo <acme@...hat.com>
To:	David Miller <davem@...emloft.net>
Cc:	rientjes@...gle.com, linux-kernel@...r.kernel.org,
	kernel-testers@...r.kernel.org, thomas@...3r.de, rjw@...k.pl,
	dccp@...r.kernel.org
Subject: Re: [Bug #13666] WARNING: at mm/page_alloc.c:1743
	__alloc_pages_nodemask

Em Mon, Jun 29, 2009 at 07:16:55PM -0700, David Miller escreveu:
> From: David Rientjes <rientjes@...gle.com>
> Date: Mon, 29 Jun 2009 17:06:42 -0700 (PDT)
> 
> > On Mon, 29 Jun 2009, Rafael J. Wysocki wrote:
> > 
> >> This message has been generated automatically as a part of a report
> >> of recent regressions.
> >> 
> >> The following bug entry is on the current list of known regressions
> >> from 2.6.30.  Please verify if it still should be listed and let me know
> >> (either way).
> >> 
> >> 
> >> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=13666
> >> Subject		: WARNING: at mm/page_alloc.c:1743 __alloc_pages_nodemask
> >> Submitter	: Thomas Meyer <thomas@...3r.de>
> >> Date		: 2009-06-27 16:15 (2 days old)
> >> References	: http://lkml.org/lkml/2009/6/27/75
> >> 
> > 
> > dccp_init() is trying to allocate a goal that causes the order in 
> > __get_free_pages() to be >= MAX_ORDER.  
> > 
> > Arnaldo, can we cap ehash_order and bhash_order at MAX_ORDER - 1?
> 
> There was a patch going arond for this already.

http://patchwork.kernel.org/patch/31784/

- Arnaldo
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