Merge tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux

Pull crypto library fixes from Eric Biggers:
 "Two Curve25519 related fixes:

   - Re-enable KASAN support on curve25519-hacl64.c with gcc.

   - Disable the arm optimized Curve25519 code on CPU_BIG_ENDIAN
     kernels. It has always been broken in that configuration"

* tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux:
  lib/crypto: arm/curve25519: Disable on CPU_BIG_ENDIAN
  lib/crypto: curve25519-hacl64: Fix older clang KASAN workaround for GCC

Author: torvalds

lib/crypto/Kconfig

@@ -64,7 +64,7 @@ config CRYPTO_LIB_CURVE25519
 config CRYPTO_LIB_CURVE25519_ARCH
 	bool
 	depends on CRYPTO_LIB_CURVE25519 && !UML && !KMSAN
-	default y if ARM && KERNEL_MODE_NEON
+	default y if ARM && KERNEL_MODE_NEON && !CPU_BIG_ENDIAN
 	default y if PPC64 && CPU_LITTLE_ENDIAN
 	default y if X86_64
 

lib/crypto/Makefile

@@ -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