Re: general protection fault in perf_misc_flags

[Dmitry Vyukov]

On Mon, Sep 28, 2020 at 10:38 AM Borislav Petkov <bp@xxxxxxxxx> wrote:
>
> On Mon, Sep 28, 2020 at 08:06:19AM +0200, Dmitry Vyukov wrote:
> > Maybe it's just a random silent memory corruption in the end?...
>
> Oh, the rabbit hole goes deeper. But if it is corruption, what is the
> common element in all those? All those guests have run on the same
> physical machine?
>
> If so, you probably won't get any logs from it to search for MCEs or
> so...? Maybe the GCE people can do some grepping :)

I meant the kernel self-corrupts itself, that just wasn't detected by
KASAN, page protections, etc.