linux-kernel - Re: [Bug #13319] Page allocation failures with b43 and p54usb

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Message-ID: <84144f020905172331x6032394fn172f02e36298192d@mail.gmail.com>
Date:	Mon, 18 May 2009 09:31:47 +0300
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Johannes Berg <johannes@...solutions.net>,
	Larry Finger <Larry.Finger@...inger.net>,
	linux-wireless@...r.kernel.org, adrian@...golddream.dyndns.info
Subject: Re: [Bug #13319] Page allocation failures with b43 and p54usb

Hi Andrew,

On Sat, 16 May 2009 21:20:45 +0200 (CEST) "Rafael J. Wysocki"
<rjw@...k.pl> 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 2.6.29.  Please verify if it still should be listed and let me know
>> (either way).
>>
>>
>> Bug-Entry     : http://bugzilla.kernel.org/show_bug.cgi?id=13319
>> Subject               : Page allocation failures with b43 and p54usb
>> Submitter     : Larry Finger <Larry.Finger@...inger.net>
>> Date          : 2009-04-29 21:01 (18 days old)
>> References    : http://marc.info/?l=linux-kernel&m=124103897101088&w=4
>> Handled-By    : Johannes Berg <johannes@...solutions.net>

On Sun, May 17, 2009 at 2:36 AM, Andrew Morton
<akpm@...ux-foundation.org> wrote:
> Well..  order-1 GFP_ATOMIC allocations are unreliable.  The networking
> code should hanlde the situation and recover.  I assume that is
> happening in this case?
>
> Perhaps we did something in that code after 2.6.29 which increased the
> frequency of the order-1 allocation attempts?  Maybe earlier kernels
> used order-0 all the time?  Those are much more reliable.

I wonder if this is related:

http://bugzilla.kernel.org/show_bug.cgi?id=13069

Both point to post 2.6.29... Hmm.
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