From: Tomas Paukrt <tomaspaukrt@email.cz>
Date: Sat, 22 Jan 2022 17:07:53 +0000 (+0100)
Subject: crypto: mxs-dcp - Fix scatterlist processing
X-Git-Tag: v5.17.2~915
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=c66518f4ddcc2e1576aa6bb0a6d9f8f521e925fb;p=users%2Fdwmw2%2Flinux.git

crypto: mxs-dcp - Fix scatterlist processing

[ Upstream commit 28e9b6d8199a3f124682b143800c2dacdc3d70dd ]

This patch fixes a bug in scatterlist processing that may cause incorrect AES block encryption/decryption.

Fixes: 2e6d793e1bf0 ("crypto: mxs-dcp - Use sg_mapping_iter to copy data")
Signed-off-by: Tomas Paukrt <tomaspaukrt@email.cz>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/crypto/mxs-dcp.c b/drivers/crypto/mxs-dcp.c
index d19e5ffb5104b..d6f9e2fe863d7 100644
--- a/drivers/crypto/mxs-dcp.c
+++ b/drivers/crypto/mxs-dcp.c
@@ -331,7 +331,7 @@ static int mxs_dcp_aes_block_crypt(struct crypto_async_request *arq)
 		memset(key + AES_KEYSIZE_128, 0, AES_KEYSIZE_128);
 	}
 
-	for_each_sg(req->src, src, sg_nents(src), i) {
+	for_each_sg(req->src, src, sg_nents(req->src), i) {
 		src_buf = sg_virt(src);
 		len = sg_dma_len(src);
 		tlen += len;