Re: [RFC 0/7] mm: dual-bitmap page allocator consistency checker

Vlastimil Babka (SUSE)
2026-04-24T15:42:59Z

On 4/24/26 16:00, Sasha Levin wrote:
> Existing memory debugging tools - KASAN, KFENCE, page_poisoning - detect
> access violations and content corruption, but none of them can detect
> silent corruption in the page allocator's own metadata. If a hardware
> bit flip corrupts an allocation bitmap, the allocator hands out a page

An allocation what? The page allocator is a buddy allocator, it has no
bitmap to track free/allocated state of pages?