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

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Message-Id: <20090629.191655.193712233.davem@davemloft.net>
Date:	Mon, 29 Jun 2009 19:16:55 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	rientjes@...gle.com
Cc:	acme@...stprotocols.net, 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

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.
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