netdev - Re: 2.6.30-rc1: e1000: list

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Message-ID: <20090409080159.GA5845@ff.dom.local>
Date:	Thu, 9 Apr 2009 08:01:59 +0000
From:	Jarek Poplawski <jarkao2@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	a.beregalov@...il.com, kernel-testers@...r.kernel.org,
	netdev@...r.kernel.org, e1000-devel@...ts.sourceforge.net
Subject: Re: 2.6.30-rc1: e1000: list_add corruption

On Thu, Apr 09, 2009 at 12:51:06AM -0700, David Miller wrote:
> From: Jarek Poplawski <jarkao2@...il.com>
> Date: Thu, 9 Apr 2009 07:12:42 +0000
> 
> > On 09-04-2009 06:20, David Miller wrote:
> >> From: Alexander Beregalov <a.beregalov@...il.com>
> >> Date: Thu, 9 Apr 2009 08:16:00 +0400
> >> 
> >>> The host has two interfaces
> >>> eth0 - e1000, eth1 - forcedeth.
> >>> Both are not working after that messages.
> >> 
> >> It looks like the NAPI pending list is being modified in an illegal
> >> state by forcedeth, and mid-stream to a list_del() an e1000 interrupt
> >> comes in and this tries to schedule the e1000 NAPI context and we get
> >> list corruption.
> > 
> > Good point! Feel free to send a patch. ;-)
> 
> A real shame, since I sent that analysis in hoping someone else
> would do the rest of the digging and write the fix. :-/

Hmm... What rest? Alexander?

Jarek P.
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