linux-kernel - Re: [stable-2.6.32 PATCH] ixgbe: backport bug fix for tx panic

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Message-ID: <alpine.WNT.2.00.1005250926320.2708@jbrandeb-desk1.amr.corp.intel.com>
Date:	Tue, 25 May 2010 09:27:25 -0700 (Pacific Daylight Time)
From:	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>
To:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
cc:	"stable@...nel.org" <stable@...nel.org>,
	"greg@...ah.com" <greg@...ah.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"davem@...emloft.net" <davem@...emloft.net>,
	Brandon <brandon@...p.org>
Subject: Re: [stable-2.6.32 PATCH] ixgbe: backport bug fix for tx panic



On Tue, 25 May 2010, Jeff Kirsher wrote:

> On Mon, May 10, 2010 at 17:46, Jeff Kirsher <jeffrey.t.kirsher@...el.com> wrote:
> > From: Jesse Brandeburg <jesse.brandeburg@...el.com>
> >
> > backporting this commit:
> >
> > commit fdd3d631cddad20ad9d3e1eb7dbf26825a8a121f
> > Author: Krishna Kumar <krkumar2@...ibm.com>
> > Date:   Wed Feb 3 13:13:10 2010 +0000
> >
> >    ixgbe: Fix return of invalid txq
> >
> >    a developer had complained of getting lots of warnings:
> >
> >    "eth16 selects TX queue 98, but real number of TX queues is 64"
> >
> >    http://www.mail-archive.com/e1000-devel@lists.sourceforge.net/msg02200.html
> >
> >    As there was no follow up on that bug, I am submitting this
> >    patch assuming that the other return points will not return
> >    invalid txq's, and also that this fixes the bug (not tested).
> >
> >    Signed-off-by: Krishna Kumar <krkumar2@...ibm.com>
> >    Signed-off-by: Jesse Brandeburg <jesse.brandeburg@...el.com>
> >    Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@...el.com>
> >    Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
> >    Signed-off-by: David S. Miller <davem@...emloft.net>
> >
> > CC: Brandon <brandon@...p.org>
> > Signed-off-by: Jesse Brandeburg <jesse.brandeburg@...el.com>
> > ---
> >
> >  drivers/net/ixgbe/ixgbe_main.c |    8 ++++++--
> >  1 files changed, 6 insertions(+), 2 deletions(-)
> >
> 
> Greg - status?  Did you queue this patch for the stable release and I missed it?

Maybe we didn't say (and we should have) that this fixes a panic on 
machines with > 64 cores.  Please apply to -stable 32.

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