[PATCH 5.16 0208/1017] crypto: mxs-dcp - Fix scatterlist processing

Greg Kroah-Hartman
2022-04-05T11:42:41Z

From: Tomas Paukrt <tomaspaukrt@email.cz>

[ 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>
---
drivers/crypto/mxs-dcp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/crypto/mxs-dcp.c b/drivers/crypto/mxs-dcp.c
index d19e5ffb5104..d6f9e2fe863d 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;
--
2.34.1