linux-kernel - Re: [Bug #11382] e1000e: 2.6.27-rc1 corrupts EEPROM/NVM

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Date:	Mon, 22 Sep 2008 16:59:51 +1000
From:	"Dave Airlie" <airlied@...il.com>
To:	"David Miller" <davem@...emloft.net>
Cc:	rjw@...k.pl, linux-kernel@...r.kernel.org,
	kernel-testers@...r.kernel.org, chrisl@...are.com,
	david.vrabel@....com
Subject: Re: [Bug #11382] e1000e: 2.6.27-rc1 corrupts EEPROM/NVM

On Mon, Sep 22, 2008 at 9:51 AM, David Miller <davem@...emloft.net> wrote:
> From: "Rafael J. Wysocki" <rjw@...k.pl>
> Date: Sun, 21 Sep 2008 20:54:13 +0200 (CEST)
>
>> Bug-Entry     : http://bugzilla.kernel.org/show_bug.cgi?id=11382
>> Subject               : e1000e: 2.6.27-rc1 corrupts EEPROM/NVM
>> Submitter     : David Vrabel <david.vrabel@....com>
>> Date          : 2008-08-08 10:47 (45 days old)
>> References    : http://marc.info/?l=linux-kernel&m=121819267211679&w=4
>> Handled-By    : Christopher Li <chrisl@...are.com>
>
> Fixed by:
>
> commit 78566fecbb12a7616ae9a88b2ffbc8062c4a89e3
> Author: Christopher Li <chrisl@...are.com>
> Date:   Fri Sep 5 14:04:05 2008 -0700
>
>    e1000: prevent corruption of EEPROM/NVM
>
>    Andrey reports e1000 corruption, and that a patch in vmware's ESX fixed
>    it.
>
>    The EEPROM corruption is triggered by concurrent access of the EEPROM
>    read/write. Putting a lock around it solve the problem.
>

Just noticed I replied to davem and not to everyone.. so I did some
further hunting.

Okay so e1000e seems to have a problem in this area, that this *DOESN'T* fix.

I've reconstructed my boot timeline from message logs

Sep 3rd, I booted rawhide kernel 2.6.27-0.290.rc5.fc10.i686

I suspended/resume a few times in between with no issues.

Sep 8th I booted my own 2.6.27-rc5 kernel based from
ec0c15afb41fd9ad45b53468b60db50170e22346

This got a corrupted e1000e checksum and every kernel since has.

Dave.
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