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Mon, 10 Jun 2024 08:26:48 -0700 (PDT) Date: Mon, 10 Jun 2024 17:26:39 +0200 Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Developer-Key: i=ardb@kernel.org; a=openpgp; fpr=F43D03328115A198C90016883D200E9CA6329909 X-Developer-Signature: v=1; a=openpgp-sha256; l=1742; i=ardb@kernel.org; h=from:subject; bh=eJNPUyXrEg+4UdWAVwkHUS/E+tlxeHkytZaImtWFzIg=; b=owGbwMvMwCFmkMcZplerG8N4Wi2JIS1dWn/dQ06xa7aMn3l3LbaR6hWs1Np5teBSz7+sug23P oflSz3uKGVhEONgkBVTZBGY/ffdztMTpWqdZ8nCzGFlAhnCwMUpABPJnc7wT69IwtFPpvN/y/+7 Wxg77slM8LghKBZ9uEr/3+zyi9InlBj+Sk+1KnEoyzgmLs4Xu2au+k6pq8ECnGs2vXyuJTLnwF1 NXgA= X-Mailer: git-send-email 2.45.2.505.gda0bf45e8d-goog Message-ID: <20240610152638.2755370-2-ardb+git@google.com> Subject: [PATCH] crypto: arm/crc32 - add kCFI annotations to asm routines From: Ard Biesheuvel To: linux-crypto@vger.kernel.org Cc: linux-hardening@vger.kernel.org, herbert@gondor.apana.org.au, Ard Biesheuvel , Kees Cook , Linus Walleij From: Ard Biesheuvel The crc32/crc32c implementations using the scalar CRC32 instructions are accessed via indirect calls, and so they must be annotated with type ids in order to execute correctly when kCFI is enabled. Cc: Kees Cook Cc: Linus Walleij Signed-off-by: Ard Biesheuvel Reviewed-by: Kees Cook Reviewed-by: Linus Walleij --- arch/arm/crypto/crc32-ce-core.S | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/arch/arm/crypto/crc32-ce-core.S b/arch/arm/crypto/crc32-ce-core.S index 3f13a76b9066..88f9edf94e95 100644 --- a/arch/arm/crypto/crc32-ce-core.S +++ b/arch/arm/crypto/crc32-ce-core.S @@ -48,6 +48,7 @@ */ #include +#include #include .text @@ -123,11 +124,12 @@ * uint crc32_pmull_le(unsigned char const *buffer, * size_t len, uint crc32) */ -ENTRY(crc32_pmull_le) +SYM_FUNC_START(crc32_pmull_le) adr r3, .Lcrc32_constants b 0f +SYM_FUNC_END(crc32_pmull_le) -ENTRY(crc32c_pmull_le) +SYM_FUNC_START(crc32c_pmull_le) adr r3, .Lcrc32c_constants 0: bic LEN, LEN, #15 @@ -236,8 +238,7 @@ fold_64: vmov r0, s5 bx lr -ENDPROC(crc32_pmull_le) -ENDPROC(crc32c_pmull_le) +SYM_FUNC_END(crc32c_pmull_le) .macro __crc32, c subs ip, r2, #8 @@ -296,11 +297,11 @@ ARM_BE8(rev16 r3, r3 ) .endm .align 5 -ENTRY(crc32_armv8_le) +SYM_TYPED_FUNC_START(crc32_armv8_le) __crc32 -ENDPROC(crc32_armv8_le) +SYM_FUNC_END(crc32_armv8_le) .align 5 -ENTRY(crc32c_armv8_le) +SYM_TYPED_FUNC_START(crc32c_armv8_le) __crc32 c -ENDPROC(crc32c_armv8_le) +SYM_FUNC_END(crc32c_armv8_le)