netdev - Re: e1000e 0000:00:19.0: DMA-API: device driver tries to free DMA memory it has not allocated [device address=0x0000000052ff084a] [size=90 bytes]

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Message-ID: <20090318164731.GB31315@elte.hu>
Date:	Wed, 18 Mar 2009 17:47:31 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>
Cc:	Lubomir Rintel <lkundrak@...sk>,
	Joerg Roedel <joerg.roedel@....com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>,
	"Allan, Bruce W" <bruce.w.allan@...el.com>,
	"Waskiewicz Jr, Peter P" <peter.p.waskiewicz.jr@...el.com>,
	"Ronciak, John" <john.ronciak@...el.com>,
	"e1000-devel@...ts.sourceforge.net" 
	<e1000-devel@...ts.sourceforge.net>,
	Ingo Molnar <mingo@...hat.com>,
	"iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: e1000e 0000:00:19.0: DMA-API: device driver tries to free DMA
	memory it has not allocated [device address=0x0000000052ff084a]
	[size=90 bytes]


* Brandeburg, Jesse <jesse.brandeburg@...el.com> wrote:

> Ingo Molnar wrote:
> > * Lubomir Rintel <lkundrak@...sk> wrote:
> > 
> >> On Wed, March 18, 2009 8:04 am, Ingo Molnar wrote:
> >>> 
> >>> ( e1000e Cc:s added. A new debug feature, CONFIG_DMA_API_DEBUG=y,
> >>>   has triggered the warning below in e1000_put_txbuf(). )
> >> 
> >> http://lkml.org/lkml/2009/3/2/318
> 
> We are still looking for more testing from the general community of 
> this patch, in particular if any tx hangs are reported.  Thanks in 
> advance for any reports.--

Yeah - already picked it up into tip:out-of-tree and it passed about 
a hundred bootup tests on various e1000e using systems already - 
with no problems whatsoever. Will let you know if anything breaks - 
e1000e has been rock solid for me in the .29 cycle.

	Ingo
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