From: Pavel Machek <pavel@ucw.cz>
To: kernel list <linux-kernel@vger.kernel.org>
Subject: DRAM unreliable under specific access patern
Date: Wed, 24 Dec 2014 17:38:23 +0100 [thread overview]
Message-ID: <20141224163823.GA17035@amd> (raw)
Hi!
It seems that it is easy to induce DRAM bit errors by doing repeated
reads from adjacent memory cells on common hw. Details are at
https://www.ece.cmu.edu/~safari/pubs/kim-isca14.pdf
. Older memory modules seem to work better, and ECC should detect
this. Paper has inner loop that should trigger this.
Workarounds seem to be at hardware level, and tricky, too.
Does anyone have implementation of detector? Any ideas how to work
around it in software?
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next reply other threads:[~2014-12-24 16:38 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-24 16:38 Pavel Machek [this message]
2014-12-24 16:46 ` DRAM unreliable under specific access patern Pavel Machek
2014-12-24 17:13 ` Andy Lutomirski
2014-12-24 17:25 ` Pavel Machek
2014-12-24 17:38 ` Andy Lutomirski
2014-12-24 17:50 ` Pavel Machek
2014-12-29 12:13 ` Jiri Kosina
2014-12-29 17:09 ` Pavel Machek
2014-12-28 9:18 ` Willy Tarreau
[not found] <CAL82V5NN8U4PyiSjLxgpTrgsgkbM7rRCbVF5P-HHyEqphLOy+g@mail.gmail.com>
2014-12-24 22:08 ` Pavel Machek
2015-01-05 19:23 ` One Thousand Gnomes
2015-01-05 19:50 ` Andy Lutomirski
2015-01-06 1:47 ` Kirill A. Shutemov
2015-01-06 1:57 ` Andy Lutomirski
2015-01-06 2:18 ` Kirill A. Shutemov
2015-01-06 2:26 ` Andy Lutomirski
2015-01-08 13:03 ` One Thousand Gnomes
2015-01-08 16:52 ` Pavel Machek
2015-01-09 15:50 ` Vlastimil Babka
2015-01-09 16:31 ` Pavel Machek
2015-01-06 23:20 ` Pavel Machek
2015-03-09 16:03 ` Mark Seaborn
2015-03-09 16:30 ` Andy Lutomirski
2015-03-09 21:17 ` Pavel Machek
2015-03-09 21:37 ` Mark Seaborn
2014-12-24 22:27 ` Pavel Machek
2014-12-24 23:41 ` Pavel Machek
[not found] ` <CAE2SPAa-tBFk0gnOhEZiriQA7bv6MmL9HGqAMSceUKKqujBDPQ@mail.gmail.com>
2014-12-25 9:23 ` Pavel Machek
2014-12-28 22:48 ` Mark Seaborn
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