linux-kernel - Re: [PATCH] af_packet: Don't use skb after dev_queue

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Message-ID: <20100117230531.GC3161@del.dom.local>
Date:	Mon, 18 Jan 2010 00:05:31 +0100
From:	Jarek Poplawski <jarkao2@...il.com>
To:	Michael Breuer <mbreuer@...jas.com>
Cc:	Stephen Hemminger <shemminger@...ux-foundation.org>,
	David Miller <davem@...emloft.net>, akpm@...ux-foundation.org,
	flyboy@...il.com, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH] af_packet: Don't use skb after dev_queue_xmit()

On Sun, Jan 17, 2010 at 05:34:19PM -0500, Michael Breuer wrote:
> On 1/17/2010 5:17 PM, Jarek Poplawski wrote:
> >On Sun, Jan 17, 2010 at 11:26:46AM -0500, Michael Breuer wrote:
> >>On 01/13/2010 04:16 PM, Michael Breuer wrote:
> >>>On 1/13/2010 4:09 PM, Jarek Poplawski wrote:
> >>>>On Wed, Jan 13, 2010 at 03:39:37PM -0500, Michael Breuer wrote:
> >>>>
> >>Update: after leaving the system up for a few days, I hit the DMAR
> >>error again.
> >My proposal is to send some summary as a new thread, with dmar in the
> >subject, and cc-ed dmar maintainers.
> >
> Not sure I agree. The symptoms are identical to those I hit without
> DMAR earlier on. Also, as this issue only happens when there is high
> receive load, I'm thinking there's some sort of race between TX and
> RX within the sky2 driver, or hardware. I think that DMAR is
> correctly catching the error.

Hmm... OK, then let's wait with this report and go back to testing
it "really really long" ;-) without DMAR, and maybe without the
last Stephen's patch either? (So only the two things in the current
linux-2.6.)

Jarek P.
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