linux-kernel - [PATCH AUTOSEL for 4.9 111/156] crypto: tcrypt - fix buffer lengths in test_aead

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Message-ID: <20171207154845.4814-111-alexander.levin@verizon.com>
Date:   Thu, 7 Dec 2017 15:49:23 +0000
From:   alexander.levin@...izon.com
To:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
Cc:     Robert Baronescu <robert.baronescu@....com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        alexander.levin@...izon.com
Subject: [PATCH AUTOSEL for 4.9 111/156] crypto: tcrypt - fix buffer lengths
 in test_aead_speed()

From: Robert Baronescu <robert.baronescu@....com>

[ Upstream commit 7aacbfcb331ceff3ac43096d563a1f93ed46e35e ]

Fix the way the length of the buffers used for
encryption / decryption are computed.
For e.g. in case of encryption, input buffer does not contain
an authentication tag.

Signed-off-by: Robert Baronescu <robert.baronescu@....com>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
---
 crypto/tcrypt.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index ae22f05d5936..e3af318af2db 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -342,7 +342,7 @@ static void test_aead_speed(const char *algo, int enc, unsigned int secs,
 			}
 
 			sg_init_aead(sg, xbuf,
-				    *b_size + (enc ? authsize : 0));
+				    *b_size + (enc ? 0 : authsize));
 
 			sg_init_aead(sgout, xoutbuf,
 				    *b_size + (enc ? authsize : 0));
@@ -350,7 +350,9 @@ static void test_aead_speed(const char *algo, int enc, unsigned int secs,
 			sg_set_buf(&sg[0], assoc, aad_size);
 			sg_set_buf(&sgout[0], assoc, aad_size);
 
-			aead_request_set_crypt(req, sg, sgout, *b_size, iv);
+			aead_request_set_crypt(req, sg, sgout,
+					       *b_size + (enc ? 0 : authsize),
+					       iv);
 			aead_request_set_ad(req, aad_size);
 
 			if (secs)
-- 
2.11.0