netdev - Re: e1000e regression (interface hang) with latest -git

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Message-ID: <Pine.WNT.4.64.0901211010250.6372@ppwaskie-MOBL2.amr.corp.intel.com>
Date:	Wed, 21 Jan 2009 10:12:54 -0800 (Pacific Standard Time)
From:	"Waskiewicz Jr, Peter P" <peter.p.waskiewicz.jr@...el.com>
To:	Ingo Molnar <mingo@...e.hu>
cc:	"Allan, Bruce W" <bruce.w.allan@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>,
	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>,
	"Waskiewicz Jr, Peter P" <peter.p.waskiewicz.jr@...el.com>,
	"e1000-devel@...ts.sourceforge.net" 
	<e1000-devel@...ts.sourceforge.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: e1000e regression (interface hang) with latest -git

> * Ingo Molnar <mingo@...e.hu> wrote:
> 
> > The same point remains though: it worked before (and works fine with a 
> > distro kernel, 2.6.28-0.140.rc9.git1.fc11.x86_64) and doesnt work with 
> > latest -git.
> > 
> > I'll capture some debug data and send it to you.
> 
> find attached the debug data:
> 
>   ethtool.dump.eth0.before
>   ethtool.dump.eth0.after
>   ethtool.dump.eth0.after2
>   boot.log
>   config
> 
> the 'before' dump is before the hang, shortly after bootup. It also 
> includes 'ifconfig eth0' output.
> 
> the 'after' dump is after the hang - while the interface is hung.
> 
> 'after2' dump is after a 'service network restart' - which brought the 
> interface back.
> 
> Note if i wait long enough (half an hour or so), then not even 'service 
> network restart' will bring back the device.
> 
> The kernel i tested is: v2.6.29-rc2-13-gf3b8436

As Bruce stated, this is an igb issue, not e1000e.  From your boot.log:

igb: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX
igb: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX

One other piece of info (in addition to what Bruce requested) that would 
be useful is after you've done ifconfig eht0 up, cat /proc/interrupts | 
grep eth0 and send that output (I want to see your MSI-X configuration).

Cheers,
-PJ Waskiewicz
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