From c5c46887cfe7d0dff743d9eda7c91de625e96960 Mon Sep 17 00:00:00 2001
From: Eric Biggers <ebiggers@google.com>
Date: Sun, 31 Mar 2019 13:04:19 -0700
Subject: crypto: streebog - fix unaligned memory accesses

Don't cast the data buffer directly to streebog_uint512, as this
violates alignment rules.

Fixes: fe18957e8e87 ("crypto: streebog - add Streebog hash function")
Cc: Vitaly Chikunov <vt@altlinux.org>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Vitaly Chikunov <vt@altlinux.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 include/crypto/streebog.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'include/crypto')

diff --git a/include/crypto/streebog.h b/include/crypto/streebog.h
index 856e32af8657..cae1b4a01971 100644
--- a/include/crypto/streebog.h
+++ b/include/crypto/streebog.h
@@ -23,7 +23,10 @@ struct streebog_uint512 {
 };
 
 struct streebog_state {
-	u8 buffer[STREEBOG_BLOCK_SIZE];
+	union {
+		u8 buffer[STREEBOG_BLOCK_SIZE];
+		struct streebog_uint512 m;
+	};
 	struct streebog_uint512 hash;
 	struct streebog_uint512 h;
 	struct streebog_uint512 N;
-- 
cgit