linux-kernel - [PATCH 3.16 183/305] crypto: ux500

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Message-ID: <lsq.1471110171.253907586@decadent.org.uk>
Date:	Sat, 13 Aug 2016 18:42:51 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org, "Joakim Bech" <joakim.bech@...aro.org>,
	"Linus Walleij" <linus.walleij@...aro.org>,
	"Herbert Xu" <herbert@...dor.apana.org.au>,
	"David Binderman" <linuxdev.baldrick@...il.com>
Subject: [PATCH 3.16 183/305] crypto: ux500 - memmove the right size

3.16.37-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Linus Walleij <linus.walleij@...aro.org>

commit 19ced623db2fe91604d69f7d86b03144c5107739 upstream.

The hash buffer is really HASH_BLOCK_SIZE bytes, someone
must have thought that memmove takes n*u32 words by mistake.
Tests work as good/bad as before after this patch.

Cc: Joakim Bech <joakim.bech@...aro.org>
Reported-by: David Binderman <linuxdev.baldrick@...il.com>
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/crypto/ux500/hash/hash_core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/crypto/ux500/hash/hash_core.c
+++ b/drivers/crypto/ux500/hash/hash_core.c
@@ -797,7 +797,7 @@ static int hash_process_data(struct hash
 						&device_data->state);
 				memmove(req_ctx->state.buffer,
 					device_data->state.buffer,
-					HASH_BLOCK_SIZE / sizeof(u32));
+					HASH_BLOCK_SIZE);
 				if (ret) {
 					dev_err(device_data->dev,
 						"%s: hash_resume_state() failed!\n",
@@ -848,7 +848,7 @@ static int hash_process_data(struct hash
 
 			memmove(device_data->state.buffer,
 				req_ctx->state.buffer,
-				HASH_BLOCK_SIZE / sizeof(u32));
+				HASH_BLOCK_SIZE);
 			if (ret) {
 				dev_err(device_data->dev, "%s: hash_save_state() failed!\n",
 					__func__);