On Tue, 23 Jun 2026 13:23:46 -0700, Nathan Chancellor wrote:
> clang recently added support for -Wstringop-overread [1], which is on by
> default like -Wfortify-source. This breaks the usage of -Werror in the
> fortify tests, resulting in the following false positive warnings in the
> kernel build:
>
> warning: unsafe memcmp() usage lacked '__read_overflow2' warning in
> lib/test_fortify/read_overflow2-memcmp.c
> warning: unsafe memcmp() usage lacked '__read_overflow' warning in
> lib/test_fortify/read_overflow-memcmp.c
> warning: unsafe memchr() usage lacked '__read_overflow' warning in
> lib/test_fortify/read_overflow-memchr.c
>
> [...]
Applied to for-next/hardening, thanks!
[1/1] fortify: Disable -Wstringop-overread in tests
https://git.kernel.org/kees/c/c1f3e770eec2
Take care,
--
Kees Cook
