How much/what hardware does the rowhammer DRAM bug affects?
Georgi Guninski
guninski at guninski.com
Thu Sep 17 00:25:39 PDT 2015
On Wed, Sep 16, 2015 at 11:46:26PM -0400, grarpamp wrote:
>
>
> Some paper has said systems using ECC RAM are resistant / immune
> to rowhammer.
>
> There is still a fair bump in cost for ECC system
> however once you've seen your first syslog entry
> you forget about the cost. Regardless of rowhammer.
http://users.ece.cmu.edu/~omutlu/pub/dram-row-hammer_kim_talk_isca14.pdf
p. 32 of the PDF:
– Simple ECC (e.g., SECDED) cannot prevent all errors
From wikipedia: Tests show that simple ECC solutions, providing
single-error correction and double-error detection (SECDED)
capabilities, are not able to correct or detect all observed
disturbance errors because some of them include more than two flipped
bits per memory word.[1]:8[11]:32
https://en.wikipedia.org/wiki/Row_hammer#cite_ref-isca14-talk_11-0
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