netdev - RE: Kernel crash after using new Intel NIC (igb)

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Date:	Tue, 26 Apr 2011 16:34:09 -0700
From:	"Wyborny, Carolyn" <carolyn.wyborny@...el.com>
To:	Maximilian Engelhardt <maxi@...monizer.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	StuStaNet Vorstand <vorstand@...sta.mhn.de>,
	"e1000-devel@...ts.sourceforge.net" 
	<e1000-devel@...ts.sourceforge.net>
Subject: RE: Kernel crash after using new Intel NIC (igb)



>-----Original Message-----
>From: netdev-owner@...r.kernel.org [mailto:netdev-owner@...r.kernel.org]
>On Behalf Of Maximilian Engelhardt
>Sent: Sunday, April 24, 2011 3:33 PM
>To: linux-kernel@...r.kernel.org
>Cc: netdev@...r.kernel.org; StuStaNet Vorstand
>Subject: Kernel crash after using new Intel NIC (igb)
>
>Hello,
>
>some time ago we switched some of our servers to a new networking card
>that
>uses the Intel igb driver. Since that time we see regular kernel
>crashes.
>The crashes happen at very irregular intervals, sometimes after a week
>uptime,
>sometimes after a month or even more. They seem to be independent of the
>server load as they also happen in the night when there is low traffic.
>
>The affected server is used as a NAT device with some iptables rules and
>serves
>about 2000 people.
>
>Attached are two logs of the crashes as well as the output of dmesg,
>lspci,
>and /proc/interrupts as well as the used kernel config.
>
>I have no idea what might be wrong but I think it is a kernel bug.
>Perhaps
>someone with more knowledge has a clue.
>
>If needed I can provide additional information or build different
>kernels.
>
>Greetings,
>Maxi

Hello,

I'm sorry you're having crashes since installing our NIC.  Thank you for the data.  I haven't had a chance to review it carefully yet, but it looks to me like the crashes have us in the stack sometimes and sometimes not.  I need to do a bit more research and will need some more information.  Can I get an ethtool -i eth# for the device and also lspci -vvv for the platform its installed on.

If you open an issue at SourceForge we will have a place to keep the logs.

I will research this a bit more and get back to you tomorrow my time.

Thanks,

Carolyn
Carolyn Wyborny
Linux Development
LAN Access Division
Intel Corporation