ECC memory

Posted Oct 31, 2016 12:09 UTC (Mon) by hmh (subscriber, #3838)
In reply to: ECC memory by ploxiln
Parent article: Defending against Rowhammer in the kernel

Actually, it doesn't even have to crash the system. It will report an UE, which on some platforms with better RAS, AFAIK, actually results in the kernel looking at what uses that page, and force-killing it instead.

Obviously, if the one using that page is the kernel, it has to Oops, but...

ECC memory

Posted Nov 5, 2016 3:28 UTC (Sat) by mikemol (guest, #83507) [Link] (1 responses)

Interesting. That turns Rowhammer into a means of killing someone else's process without the necessary privileges.

ECC memory

Posted Nov 7, 2016 22:37 UTC (Mon) by JanC_ (guest, #34940) [Link]

Maybe we can add a kernel feature that signals the process that something is wrong with its memory, and if it can correct it, it's allowed to go on… ;)