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[v2,02/12] crypto: x86/aria - fix crash with CFI enabled

Message ID 20221118194421.160414-3-ebiggers@kernel.org (mailing list archive)
State Accepted
Delegated to: Herbert Xu
Headers show
Series crypto: CFI fixes | expand

Commit Message

Eric Biggers Nov. 18, 2022, 7:44 p.m. UTC 
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(-)
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Patch

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