Re: [PATCH v2] lib/crypto: curve25519-hacl64: Fix older clang KASAN workaround for GCC

On Mon, 3 Nov 2025 at 20:11, Nathan Chancellor nathan@kernel.org wrote:

Commit 2f13daee2a72 ("lib/crypto/curve25519-hacl64: Disable KASAN with clang-17 and older") inadvertently disabled KASAN in curve25519-hacl64.o for GCC unconditionally because clang-min-version will always evaluate to nothing for GCC. Add a check for CONFIG_CC_IS_CLANG to avoid applying the workaround for GCC, which is only needed for clang-17 and older.

Cc: stable@vger.kernel.org Fixes: 2f13daee2a72 ("lib/crypto/curve25519-hacl64: Disable KASAN with clang-17 and older") Signed-off-by: Nathan Chancellor nathan@kernel.org

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Changes in v2:

• Check for CONFIG_CC_IS_CLANG explicitly instead of using CONFIG_CC_IS_GCC as "not clang" (Eric).
• Link to v1: https://patch.msgid.link/20251102-curve25519-hacl64-fix-kasan-workaround-v1-...

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lib/crypto/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

Acked-by: Ard Biesheuvel ardb@kernel.org