Messages in this thread | ![/](/images/icornerl.gif) | | Date | Mon, 1 Sep 2003 16:06:54 +0200 | From | Pavel Machek <> | Subject | Re: how to inject memory bitflips for maximum damage? |
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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...
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ 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...
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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