Re: [PATCH 5/6] mm/execmem: use VM_FLUSH_RESET_PERMS for ROX cache allocations

On Sun, Aug 16, 2026 at 11:17:26AM +0000, [email protected] wrote:
> Thank you for your contribution! Sashiko AI review found 3 potential issue(s) to consider:
> 
> Pre-existing issues:
> - [Critical] execmem_cache_clean() calls vfree() on partial or interior chunks of a larger vmalloc allocation, causing a use-after-free for actively used regions.
> - [High] Unchecked return value of mas_store_gfp() during maple tree deletion can leave a dangling pointer in the free tree if deletion fails.
> - [Medium] Cache memory may never be freed because execmem_vmalloc() does not guarantee PMD_SIZE alignment on all architectures, preventing execmem_cache_clean() from matching its alignment checks.

Noted, will check which of those are real and address them with separate
patches.

-- 
Sincerely yours,
Mike.