Fwiw, yes it could be a cosmic ray.
It could also just be marginally bad ram. Bad ram is notoriously hard
to reliably test for. It can be very sensitive to the exact bit
pattern stored in it, the timing of reads and writes, and other
factors. The whole point of the rowhammer attacks is to push some of
those timing factors hard but the same failures can happen randomly.
On Wed, 7 Jul 2021 at 08:14, Joe Conway <mail@joeconway.com> wrote:
>
> On 7/7/21 2:53 AM, Jakub Wartak wrote:
> > Hi, Asking out of pure technical curiosity about "the rhinoceros" - what kind of animal is it ? Physical box or VM?
Howone could get dmidecode(1) / dmesg(1) / mcelog (1) from what's out there (e.g. does it run ECC or not ?)
>
>
> Rhinoceros is just a VM on a simple desktop machine. Nothing fancy.
>
> Joe
>
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greg