From 0f2981ee03ff3f9678a43592065d0ae95de451dc Mon Sep 17 00:00:00 2001
From: Eric Biggers <ebiggers@google.com>
Date: Mon, 23 Jul 2018 09:57:50 -0700
Subject: [PATCH] crypto: skcipher - fix aligning block size in
 skcipher_copy_iv()

commit 0567fc9e90b9b1c8dbce8a5468758e6206744d4a upstream.

The ALIGN() macro needs to be passed the alignment, not the alignmask
(which is the alignment minus 1).

Fixes: b286d8b1a690 ("crypto: skcipher - Add skcipher walk interface")
Cc: <stable@vger.kernel.org> # v4.10+
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 crypto/skcipher.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crypto/skcipher.c b/crypto/skcipher.c
index 11af5fd6a443..5900c8a43dea 100644
--- a/crypto/skcipher.c
+++ b/crypto/skcipher.c
@@ -399,7 +399,7 @@ static int skcipher_copy_iv(struct skcipher_walk *walk)
 	unsigned size;
 	u8 *iv;
 
-	aligned_bs = ALIGN(bs, alignmask);
+	aligned_bs = ALIGN(bs, alignmask + 1);
 
 	/* Minimum size to align buffer by alignmask. */
 	size = alignmask & ~a;
-- 
2.20.1