From: Eric Biggers <ebiggers@google.com>
Date: Sun, 26 Feb 2023 22:32:23 -0800
Subject: [PATCH] crypto: arm64/aes-neonbs - fix crash with CFI enabled
References: bsc#1012628
Patch-mainline: 6.3.2
Git-commit: 47446d7cd42358ca7d7a544f2f7823db03f616ff
commit 47446d7cd42358ca7d7a544f2f7823db03f616ff upstream.
aesbs_ecb_encrypt(), aesbs_ecb_decrypt(), aesbs_xts_encrypt(), and
aesbs_xts_decrypt() 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 if
the compiler doesn't happen to optimize out the indirect calls.
Fixes: c50d32859e70 ("arm64: Add types to indirect called assembly functions")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
arch/arm64/crypto/aes-neonbs-core.S | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/crypto/aes-neonbs-core.S b/arch/arm64/crypto/aes-neonbs-core.S
index 7278a37c..baf45071 100644
--- a/arch/arm64/crypto/aes-neonbs-core.S
+++ b/arch/arm64/crypto/aes-neonbs-core.S
@@ -15,6 +15,7 @@
*/
#include <linux/linkage.h>
+#include <linux/cfi_types.h>
#include <asm/assembler.h>
.text
@@ -620,12 +621,12 @@ SYM_FUNC_END(aesbs_decrypt8)
.endm
.align 4
-SYM_FUNC_START(aesbs_ecb_encrypt)
+SYM_TYPED_FUNC_START(aesbs_ecb_encrypt)
__ecb_crypt aesbs_encrypt8, v0, v1, v4, v6, v3, v7, v2, v5
SYM_FUNC_END(aesbs_ecb_encrypt)
.align 4
-SYM_FUNC_START(aesbs_ecb_decrypt)
+SYM_TYPED_FUNC_START(aesbs_ecb_decrypt)
__ecb_crypt aesbs_decrypt8, v0, v1, v6, v4, v2, v7, v3, v5
SYM_FUNC_END(aesbs_ecb_decrypt)
@@ -799,11 +800,11 @@ SYM_FUNC_END(__xts_crypt8)
ret
.endm
-SYM_FUNC_START(aesbs_xts_encrypt)
+SYM_TYPED_FUNC_START(aesbs_xts_encrypt)
__xts_crypt aesbs_encrypt8, v0, v1, v4, v6, v3, v7, v2, v5
SYM_FUNC_END(aesbs_xts_encrypt)
-SYM_FUNC_START(aesbs_xts_decrypt)
+SYM_TYPED_FUNC_START(aesbs_xts_decrypt)
__xts_crypt aesbs_decrypt8, v0, v1, v6, v4, v2, v7, v3, v5
SYM_FUNC_END(aesbs_xts_decrypt)
--
2.35.3