Re: [PATCH v2 1/2] mm: Move page struct poisoning to CONFIG_DEBUG_VM_PAGE_INIT_POISON

Dave Hansen
2018-09-06T17:07:57Z

On 09/06/2018 09:12 AM, Pasha Tatashin wrote:
>
> I do not want to make this feature less tested. Poisoning memory allowed
> us to catch corner case bugs like these:
>
> ab1e8d8960b68f54af42b6484b5950bd13a4054b
> mm: don't allow deferred pages with NEED_PER_CPU_KM
>
> e181ae0c5db9544de9c53239eb22bc012ce75033
> mm: zero unavailable pages before memmap init
>
> And several more that were fixed by other people.

Just curious: were these found in the wild, or by a developer doing
normal development having turned on lots of debug options?