Re: [PATCH] integrity: Annotate struct ima_rule_opt_list with __counted_by

From: Kees Cook
Date: Fri Aug 18 2023 - 14:02:33 EST


On Thu, 17 Aug 2023 14:03:28 -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 ima_rule_opt_list.
> 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] integrity: Annotate struct ima_rule_opt_list with __counted_by
https://git.kernel.org/kees/c/a4b35d4d05b9

Take care,

--
Kees Cook