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Re: [PATCH] e1000e: write protect ICHx NVM to prevent malicious write/erase

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From: Jiri Kosina <jkosina@...>
To: Jesse Brandeburg <jesse.brandeburg@...>
Cc: <torvalds@...>, <jeff@...>, <davem@...>, <linux-kernel@...>, <netdev@...>, <arjan@...>, Bruce Allan <bruce.w.allan@...>
Subject: Re: [PATCH] e1000e: write protect ICHx NVM to prevent malicious write/erase
Date: Thursday, October 2, 2008 - 5:59 am

On Wed, 1 Oct 2008, Jesse Brandeburg wrote:


> Set the hardware to ignore all write/erase cycles to the GbE region in


Hi,


thanks. We have been running our tests with complete pileup of 12 patches

from Intel, and the bug didn't trigger so far (and it triggers now pretty

reliably with the unpatched kernel in the setup Karsten has established in

our testing environment).


So the patches really seem, as far as our current testing goes, to

at least workaround the problem.


I will now try to isolate which of the patches really fixes the problem,

so that we could understand better what is going on and who is causing the

corruption.


Do you think it would be possible to adapt this particular patch so that

it spits out watnin/stacktrace when write and/or erase cycle is attempted

but denied?


Thanks,


--

Jiri Kosina

SUSE Labs


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Messages in current thread:
[PATCH 2.6.27-rc8 0/1] e1000e nvm fix, Jesse Brandeburg, (Wed Oct 1, 8:18 pm)
[PATCH] e1000e: write protect ICHx NVM to prevent malicious ..., Jesse Brandeburg, (Wed Oct 1, 8:18 pm)
Re: [PATCH] e1000e: write protect ICHx NVM to prevent malici..., Jiri Kosina, (Thu Oct 2, 9:02 am)
RE: [PATCH] e1000e: write protect ICHx NVM to prevent malici..., Brandeburg, Jesse, (Thu Oct 2, 11:37 am)
Re: [PATCH] e1000e: write protect ICHx NVM to prevent malici..., Jiri Kosina, (Thu Oct 2, 5:59 am)
Re: [PATCH] e1000e: write protect ICHx NVM to prevent malici..., Linus Torvalds, (Wed Oct 1, 8:42 pm)
Re: [PATCH] e1000e: write protect ICHx NVM to prevent malici..., Arjan van de Ven, (Wed Oct 1, 9:33 pm)
Re: [PATCH] e1000e: write protect ICHx NVM to prevent malici..., Thomas Gleixner, (Thu Oct 2, 5:05 am)