crypto: Kernel memory overwrite attempt detected to spans multiple pages

Kees Cook keescook at
Thu Apr 11 20:36:37 UTC 2019

On Thu, Apr 11, 2019 at 12:26 PM Eric Biggers <ebiggers at> wrote:
> Well, I guess I'll just add __GFP_COMP so I at least don't get spammed with
> useless bug reports.

Thanks, I appreciate it.

> But I don't think it's in any way acceptable to change the semantics of the
> kernel's page allocator but only under some obscure config option, don't
> document it anywhere, ignore the known problems for years, say that the option
> is broken anyway so it shouldn't be used, and have to exchange 15 emails to get
> anything resembling an explanation.

I understand what you mean, yeah. I'm sorry I wasn't clear about it
earlier. What do you think might help the situation as far as

Kees Cook

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