Messages in this thread |  | | Date | Tue, 1 Nov 2016 09:10:43 +0100 | From | Pavel Machek <> | Subject | Re: [kernel-hardening] rowhammer protection [was Re: Getting interrupt every million cache misses] |
| |
Hi!
> * Pavel Machek <pavel@ucw.cz> wrote: > > > I'm not going to buy broken hardware just for a test. > > Can you suggest a method to find heavily rowhammer affected hardware? Only by > testing it, or are there some chipset IDs ranges or dmidecode info that will > pinpoint potentially affected machines?
Testing can be used. https://github.com/mseaborn/rowhammer-test.git . It finds faults at 1 of 2 machines here (but takes half an hour). Then, if your hardware is one of ivy/sandy/haswell/skylake, https://github.com/IAIK/rowhammerjs.git can be used for much faster attack (many flips a second).
Unfortunately, what I have here is:
cpu family : 6 model : 23 model name : Intel(R) Core(TM)2 Duo CPU E7400 @ 2.80GHz stepping : 10 microcode : 0xa07
so rowhammerjs/native is not available for this system. Bit mapping for memory hash functions would need to be reverse engineered for more effective attack.
Best regards, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html [unhandled content-type:application/pgp-signature] |  |