From: Pavel Machek <pavel@ucw.cz>
To: "Benjamin C. Ling" <bling@CS.Stanford.EDU>
Cc: linux-kernel@vger.kernel.org
Subject: Re: how to inject memory bitflips for maximum damage?
Date: Mon, 1 Sep 2003 16:06:54 +0200 [thread overview]
Message-ID: <20030901140654.GE1358@openzaurus.ucw.cz> (raw)
In-Reply-To: <Pine.LNX.4.44.0308231439040.19230-100000@Xenon.Stanford.EDU>
Hi!
> We have FAUmachine (a linux-based fault-injection VM) installed and
> running on our research cluster, and can inject memory-bitflips in our
> processes running on top of FAUmachine.
>
> My question is -- how do I find out where to inject the bitflip for
> maximum damage (or even any damage at all). I've done a bit of searching
> on google but haven't come up with much.
>
> If anyone has any insight on where linux holds its critical memory
> structures, or where it places its running programs in physical memory,
> could you please let me know?
Toggle some bit in kernel code... That should
kill it real soon. Look at System.map for some
good places. (do_irq?). Substract 0xC0000000 for
physical address.
BTW what is purpose of these experiments?
--
Pavel
Written on sharp zaurus, because my Velo1 broke. If you have Velo you don't need...
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Hi!
> We have FAUmachine (a linux-based fault-injection VM) installed and
> running on our research cluster, and can inject memory-bitflips in our
> processes running on top of FAUmachine.
>
> My question is -- how do I find out where to inject the bitflip for
> maximum damage (or even any damage at all). I've done a bit of searching
> on google but haven't come up with much.
>
> If anyone has any insight on where linux holds its critical memory
> structures, or where it places its running programs in physical memory,
> could you please let me know?
Toggle some bit in kernel code... That should
kill it real soon. Look at System.map for some
good places. (do_irq?). Substract 0xC0000000 for
physical address.
BTW what is purpose of these experiments?
--
Pavel
Written on sharp zaurus, because my Velo1 broke. If you have Velo you don't need...
prev parent reply other threads:[~2003-09-02 12:44 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-23 21:39 how to inject memory bitflips for maximum damage? Benjamin C. Ling
2003-09-01 14:06 ` Pavel Machek [this message]
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