Commit 2b81082a authored by Nathan Chancellor's avatar Nathan Chancellor Committed by Eric Biggers
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lib/crypto: curve25519-hacl64: Fix older clang KASAN workaround for GCC 



Commit 2f13daee ("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: 2f13daee ("lib/crypto/curve25519-hacl64: Disable KASAN with clang-17 and older")
Signed-off-by: default avatarNathan Chancellor <nathan@kernel.org>
Acked-by: default avatarArd Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20251103-curve25519-hacl64-fix-kasan-workaround-v2-1-ab581cbd8035@kernel.org


Signed-off-by: default avatarEric Biggers <ebiggers@kernel.org>
parent 1af424b1

lib/crypto/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -90,7 +90,7 @@ else 
libcurve25519-$(CONFIG_CRYPTO_LIB_CURVE25519_GENERIC) += curve25519-fiat32.o

endif

# clang versions prior to 18 may blow out the stack with KASAN

ifeq ($(call clang-min-version, 180000),)

ifeq ($(CONFIG_CC_IS_CLANG)_$(call clang-min-version, 180000),y_)

KASAN_SANITIZE_curve25519-hacl64.o := n

endif