Re: [PATCH 1/2] cfi: add CONFIG_CFI_ICALL_NORMALIZE_INTEGERS

[Alice Ryhl <aliceryhl@google.com>]

On Tue, Jul 30, 2024 at 11:40 AM Alice Ryhl <aliceryhl@google.com> wrote:
>
> Introduce a Kconfig option for enabling the experimental option to
> normalize integer types. This ensures that integer types of the same
> size and signedness are considered compatible by the Control Flow
> Integrity sanitizer.
>
> This option exists for compatibility with Rust, as C and Rust do not
> have the same set of integer types. There are cases where C has two
> different integer types of the same size and alignment, but Rust only
> has one integer type of that size and alignment. When Rust calls into
> C functions using such types in their signature, this results in CFI
> failures.

This should say signedness where it says alignment.

Alice