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From:   Eric Biggers <ebiggers@kernel.org>
To:     linux-crypto@vger.kernel.org
Cc:     x86@kernel.org, linux-arm-kernel@lists.infradead.org,
        Sami Tolvanen <samitolvanen@google.com>
Subject: [PATCH 01/11] crypto: x86/aegis128 - fix crash with CFI enabled
Date:   Fri, 18 Nov 2022 01:02:10 -0800
Message-Id: <20221118090220.398819-2-ebiggers@kernel.org>
In-Reply-To: <20221118090220.398819-1-ebiggers@kernel.org>
References: <20221118090220.398819-1-ebiggers@kernel.org>
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From: Eric Biggers <ebiggers@google.com>

Some functions in aegis128-aesni-asm.S are called via indirect function
calls.  These functions need to use SYM_TYPED_FUNC_START instead of
SYM_FUNC_START to cause type hashes to be emitted when the kernel is
built with CONFIG_CFI_CLANG=y.  Otherwise, the code crashes with a CFI
failure.

Fixes: 3c516f89e17e ("x86: Add support for CONFIG_CFI_CLANG")
Signed-off-by: Eric Biggers <ebiggers@google.com>
---
 arch/x86/crypto/aegis128-aesni-asm.S | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/arch/x86/crypto/aegis128-aesni-asm.S b/arch/x86/crypto/aegis128-aesni-asm.S
index b48ddebb47489..cdf3215ec272c 100644
--- a/arch/x86/crypto/aegis128-aesni-asm.S
+++ b/arch/x86/crypto/aegis128-aesni-asm.S
@@ -7,6 +7,7 @@
  */
 
 #include <linux/linkage.h>
+#include <linux/cfi_types.h>
 #include <asm/frame.h>
 
 #define STATE0	%xmm0
@@ -402,7 +403,7 @@ SYM_FUNC_END(crypto_aegis128_aesni_ad)
  * void crypto_aegis128_aesni_enc(void *state, unsigned int length,
  *                                const void *src, void *dst);
  */
-SYM_FUNC_START(crypto_aegis128_aesni_enc)
+SYM_TYPED_FUNC_START(crypto_aegis128_aesni_enc)
 	FRAME_BEGIN
 
 	cmp $0x10, LEN
@@ -499,7 +500,7 @@ SYM_FUNC_END(crypto_aegis128_aesni_enc)
  * void crypto_aegis128_aesni_enc_tail(void *state, unsigned int length,
  *                                     const void *src, void *dst);
  */
-SYM_FUNC_START(crypto_aegis128_aesni_enc_tail)
+SYM_TYPED_FUNC_START(crypto_aegis128_aesni_enc_tail)
 	FRAME_BEGIN
 
 	/* load the state: */
@@ -556,7 +557,7 @@ SYM_FUNC_END(crypto_aegis128_aesni_enc_tail)
  * void crypto_aegis128_aesni_dec(void *state, unsigned int length,
  *                                const void *src, void *dst);
  */
-SYM_FUNC_START(crypto_aegis128_aesni_dec)
+SYM_TYPED_FUNC_START(crypto_aegis128_aesni_dec)
 	FRAME_BEGIN
 
 	cmp $0x10, LEN
@@ -653,7 +654,7 @@ SYM_FUNC_END(crypto_aegis128_aesni_dec)
  * void crypto_aegis128_aesni_dec_tail(void *state, unsigned int length,
  *                                     const void *src, void *dst);
  */
-SYM_FUNC_START(crypto_aegis128_aesni_dec_tail)
+SYM_TYPED_FUNC_START(crypto_aegis128_aesni_dec_tail)
 	FRAME_BEGIN
 
 	/* load the state: */
-- 
2.38.1