netdev - Re: net-next: 2.6.34-rc1 regression: panic when running diagnostic on interface with IPv6

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Message-ID: <20100409151916.633fc58c@nehalam>
Date:	Fri, 9 Apr 2010 15:19:16 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	emil.s.tantilov@...el.com
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: net-next: 2.6.34-rc1 regression: panic when running diagnostic
 on interface with IPv6

On Mon, 05 Apr 2010 16:53:17 -0700 (PDT)
David Miller <davem@...emloft.net> wrote:

> From: "Tantilov, Emil S" <emil.s.tantilov@...el.com>
> Date: Mon, 5 Apr 2010 17:50:38 -0600
> 
> > David Miller wrote:
> >> From: "Tantilov, Emil S" <emil.s.tantilov@...el.com>
> >> Date: Mon, 5 Apr 2010 17:03:56 -0600
> >> 
> >>> David Miller wrote:
> >>>> From: "Tantilov, Emil S" <emil.s.tantilov@...el.com>
> >>>> Date: Tue, 23 Mar 2010 12:28:08 -0600
> >>>> 
> >>>>> Bisecting points to this patch:
> >>>>> http://git.kernel.org/?p=linux/kernel/git/davem/net-next-2.6.git;a=commitdiff;h=84e8b803f1e16f3a2b8b80f80a63fa2f2f8a9be6
> >>>>> 
> >>>>> And I confirmed that the issue goes away after reverting it.
> >>>>> 
> >>>>> Steps to reproduce:
> >>>>> 1. Load the driver and configure IPv6 address.
> >>>>> 2. Run ethtool diag:
> >>>>> ethtool -t eth0
> >>>>> 
> >>>>> 3. If this doesn't brake it try again, or just do ifdown/up. Other
> >>>>> operations on the interface will eventually panic the system:
> >>>> 
> >>>> Stephen please fix this, thanks.
> >>> 
> >>> Just FYI - I still see this issue with latest pull from net-2.6.
> >> 
> >> It's net-next-2.6 that introduced the problem and has the follow-on
> >> fixes, not net-2.6
> > 
> > Same in net-next:

Are you using the standard e1000e driver from net-next or some other
Intel version.  It works fine on my e1000e doing online or offline
tests.

# ethtool -i eth4
driver: e1000e
version: 1.0.2-k2
firmware-version: 5.11-2
bus-info: 0000:03:00.0

Do you have any other suggestions (script or anything), that makes
the problem happen.
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