[PATCH 02/11] crypto: x86/aria - fix crash with CFI enabled

Eric Biggers
2022-11-18T09:04:19Z

Some functions in aria-aesni-avx-asm_64.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")
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