crypto: arm64/sm4 - fix possible crash with CFI enabled

The SM4 CCM/GCM assembly functions for encryption and decryption is
called via indirect function calls.  Therefore they need to use
SYM_TYPED_FUNC_START instead of SYM_FUNC_START to cause its type hash
to be emitted when the kernel is built with CONFIG_CFI_CLANG=y.
Otherwise, the code crashes with a CFI failure (if the compiler didn't
happen to optimize out the indirect call).

Fixes: 67fa3a7 ("crypto: arm64/sm4 - add CE implementation for CCM mode")
Fixes: ae1b83c ("crypto: arm64/sm4 - add CE implementation for GCM mode")
Signed-off-by: Tianjia Zhang <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>

Author: uudiin

arch/arm64/crypto/sm4-ce-ccm-core.S

@@ -8,6 +8,7 @@
  */
 
 #include <linux/linkage.h>
+#include <linux/cfi_types.h>
 #include <asm/assembler.h>
 #include "sm4-ce-asm.h"
 
@@ -104,7 +105,7 @@ SYM_FUNC_START(sm4_ce_ccm_final)
 SYM_FUNC_END(sm4_ce_ccm_final)
 
 .align 3
-SYM_FUNC_START(sm4_ce_ccm_enc)
+SYM_TYPED_FUNC_START(sm4_ce_ccm_enc)
 	/* input:
 	 *   x0: round key array, CTX
 	 *   x1: dst
@@ -216,7 +217,7 @@ SYM_FUNC_START(sm4_ce_ccm_enc)
 SYM_FUNC_END(sm4_ce_ccm_enc)
 
 .align 3
-SYM_FUNC_START(sm4_ce_ccm_dec)
+SYM_TYPED_FUNC_START(sm4_ce_ccm_dec)
 	/* input:
 	 *   x0: round key array, CTX
 	 *   x1: dst

arch/arm64/crypto/sm4-ce-gcm-core.S

@@ -9,6 +9,7 @@
  */
 
 #include <linux/linkage.h>
+#include <linux/cfi_types.h>
 #include <asm/assembler.h>
 #include "sm4-ce-asm.h"
 
@@ -370,7 +371,7 @@ SYM_FUNC_START(pmull_ghash_update)
 SYM_FUNC_END(pmull_ghash_update)
 
 .align 3
-SYM_FUNC_START(sm4_ce_pmull_gcm_enc)
+SYM_TYPED_FUNC_START(sm4_ce_pmull_gcm_enc)
 	/* input:
 	 *   x0: round key array, CTX
 	 *   x1: dst
@@ -581,7 +582,7 @@ SYM_FUNC_END(sm4_ce_pmull_gcm_enc)
 #define	RH3	v20
 
 .align 3
-SYM_FUNC_START(sm4_ce_pmull_gcm_dec)
+SYM_TYPED_FUNC_START(sm4_ce_pmull_gcm_dec)
 	/* input:
 	 *   x0: round key array, CTX
 	 *   x1: dst