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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>,
        Taehee Yoo <ap420073@gmail.com>,
        "Peter Zijlstra (Intel)" <peterz@infradead.org>
Subject: [PATCH v2 02/12] crypto: x86/aria - fix crash with CFI enabled
Date:   Fri, 18 Nov 2022 11:44:11 -0800
Message-Id: <20221118194421.160414-3-ebiggers@kernel.org>
In-Reply-To: <20221118194421.160414-1-ebiggers@kernel.org>
References: <20221118194421.160414-1-ebiggers@kernel.org>
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From: Eric Biggers <ebiggers@google.com>

aria_aesni_avx_encrypt_16way(), aria_aesni_avx_decrypt_16way(),
aria_aesni_avx_ctr_crypt_16way(), aria_aesni_avx_gfni_encrypt_16way(),
aria_aesni_avx_gfni_decrypt_16way(), and
aria_aesni_avx_gfni_ctr_crypt_16way() are called via indirect function
calls.  Therefore they need to use SYM_TYPED_FUNC_START instead of
SYM_FUNC_START to cause their type hashes to be emitted when the kernel
is built with CONFIG_CFI_CLANG=y.  Otherwise, the code crashes with a
CFI failure.

Fixes: ccace936eec7 ("x86: Add types to indirectly called assembly functions")
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Cc: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
---
 arch/x86/crypto/aria-aesni-avx-asm_64.S | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/arch/x86/crypto/aria-aesni-avx-asm_64.S b/arch/x86/crypto/aria-aesni-avx-asm_64.S
index c75fd7d015ed8..03ae4cd1d976a 100644
--- a/arch/x86/crypto/aria-aesni-avx-asm_64.S
+++ b/arch/x86/crypto/aria-aesni-avx-asm_64.S
@@ -7,6 +7,7 @@
  */
 
 #include <linux/linkage.h>
+#include <linux/cfi_types.h>
 #include <asm/frame.h>
 
 /* struct aria_ctx: */
@@ -913,7 +914,7 @@ SYM_FUNC_START_LOCAL(__aria_aesni_avx_crypt_16way)
 	RET;
 SYM_FUNC_END(__aria_aesni_avx_crypt_16way)
 
-SYM_FUNC_START(aria_aesni_avx_encrypt_16way)
+SYM_TYPED_FUNC_START(aria_aesni_avx_encrypt_16way)
 	/* input:
 	*      %rdi: ctx, CTX
 	*      %rsi: dst
@@ -938,7 +939,7 @@ SYM_FUNC_START(aria_aesni_avx_encrypt_16way)
 	RET;
 SYM_FUNC_END(aria_aesni_avx_encrypt_16way)
 
-SYM_FUNC_START(aria_aesni_avx_decrypt_16way)
+SYM_TYPED_FUNC_START(aria_aesni_avx_decrypt_16way)
 	/* input:
 	*      %rdi: ctx, CTX
 	*      %rsi: dst
@@ -1039,7 +1040,7 @@ SYM_FUNC_START_LOCAL(__aria_aesni_avx_ctr_gen_keystream_16way)
 	RET;
 SYM_FUNC_END(__aria_aesni_avx_ctr_gen_keystream_16way)
 
-SYM_FUNC_START(aria_aesni_avx_ctr_crypt_16way)
+SYM_TYPED_FUNC_START(aria_aesni_avx_ctr_crypt_16way)
 	/* input:
 	*      %rdi: ctx
 	*      %rsi: dst
@@ -1208,7 +1209,7 @@ SYM_FUNC_START_LOCAL(__aria_aesni_avx_gfni_crypt_16way)
 	RET;
 SYM_FUNC_END(__aria_aesni_avx_gfni_crypt_16way)
 
-SYM_FUNC_START(aria_aesni_avx_gfni_encrypt_16way)
+SYM_TYPED_FUNC_START(aria_aesni_avx_gfni_encrypt_16way)
 	/* input:
 	*      %rdi: ctx, CTX
 	*      %rsi: dst
@@ -1233,7 +1234,7 @@ SYM_FUNC_START(aria_aesni_avx_gfni_encrypt_16way)
 	RET;
 SYM_FUNC_END(aria_aesni_avx_gfni_encrypt_16way)
 
-SYM_FUNC_START(aria_aesni_avx_gfni_decrypt_16way)
+SYM_TYPED_FUNC_START(aria_aesni_avx_gfni_decrypt_16way)
 	/* input:
 	*      %rdi: ctx, CTX
 	*      %rsi: dst
@@ -1258,7 +1259,7 @@ SYM_FUNC_START(aria_aesni_avx_gfni_decrypt_16way)
 	RET;
 SYM_FUNC_END(aria_aesni_avx_gfni_decrypt_16way)
 
-SYM_FUNC_START(aria_aesni_avx_gfni_ctr_crypt_16way)
+SYM_TYPED_FUNC_START(aria_aesni_avx_gfni_ctr_crypt_16way)
 	/* input:
 	*      %rdi: ctx
 	*      %rsi: dst
-- 
2.38.1