Re: [PATCH] virt: acrn: Annotate struct vm_memory_region_batch with __counted_by

[Kees Cook]

On Fri, 22 Sep 2023 10:51:02 -0700, Kees Cook wrote:
> Prepare for the coming implementation by GCC and Clang of the __counted_by
> attribute. Flexible array members annotated with __counted_by can have
> their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS
> (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
> functions).
> 
> As found with Coccinelle[1], add __counted_by for struct vm_memory_region_batch.
> Additionally, since the element count member must be set before accessing
> the annotated flexible array member, move its initialization earlier.
> 
> [...]

Applied to for-next/hardening, thanks!

[1/1] virt: acrn: Annotate struct vm_memory_region_batch with __counted_by
      https://git.kernel.org/kees/c/1a38cf8d8ae7

Take care,

-- 
Kees Cook