From e612e94ff439ec10226abaf756a954c6d581f5d9 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Mon, 3 Mar 2025 13:49:37 -0800 Subject: [PATCH] hardening: Enable i386 FORTIFY_SOURCE on Clang 16+ The i386 regparm bug exposed with FORTIFY_SOURCE with Clang was fixed in Clang 16[1]. Link: https://github.com/llvm/llvm-project/commit/c167c0a4dcdb998affb2756ce76903a12f7d8ca5 [1] Reviewed-by: Nathan Chancellor Link: https://lore.kernel.org/r/20250303214929.work.499-kees@kernel.org Signed-off-by: Kees Cook --- security/Kconfig.hardening | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/security/Kconfig.hardening b/security/Kconfig.hardening index 23ffb0d7c8455..c17366ce8224e 100644 --- a/security/Kconfig.hardening +++ b/security/Kconfig.hardening @@ -286,7 +286,7 @@ config FORTIFY_SOURCE bool "Harden common str/mem functions against buffer overflows" depends on ARCH_HAS_FORTIFY_SOURCE # https://github.com/llvm/llvm-project/issues/53645 - depends on !CC_IS_CLANG || !X86_32 + depends on !X86_32 || !CC_IS_CLANG || CLANG_VERSION >= 160000 help Detect overflows of buffers in common string and memory functions where the compiler can determine and validate the buffer sizes.