Re: [PATCH v2] string: use __builtin_memcpy() in strlcpy/strlcat

[Kees Cook]

On Tue, 30 May 2023 10:39:11 +0200, Alexander Potapenko wrote:
> lib/string.c is built with -ffreestanding, which prevents the compiler
> from replacing certain functions with calls to their library versions.
> 
> On the other hand, this also prevents Clang and GCC from instrumenting
> calls to memcpy() when building with KASAN, KCSAN or KMSAN:
>  - KASAN normally replaces memcpy() with __asan_memcpy() with the
>    additional cc-param,asan-kernel-mem-intrinsic-prefix=1;
>  - KCSAN and KMSAN replace memcpy() with __tsan_memcpy() and
>    __msan_memcpy() by default.
> 
> [...]

Applied to for-next/hardening, thanks!

[1/1] string: use __builtin_memcpy() in strlcpy/strlcat
      https://git.kernel.org/kees/c/cfe93c8c9a7a

-- 
Kees Cook