From dc5801f60b269a73fcce789856c99d1845f75827 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 9 Jun 2022 11:14:04 -0400
Subject: af_alg_make_sg(): switch to advancing variant of iov_iter_get_pages()

... and adjust the callers

Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 crypto/algif_hash.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'crypto/algif_hash.c')

diff --git a/crypto/algif_hash.c b/crypto/algif_hash.c
index 50f7b22f1b48..1d017ec5c63c 100644
--- a/crypto/algif_hash.c
+++ b/crypto/algif_hash.c
@@ -102,11 +102,12 @@ static int hash_sendmsg(struct socket *sock, struct msghdr *msg,
 		err = crypto_wait_req(crypto_ahash_update(&ctx->req),
 				      &ctx->wait);
 		af_alg_free_sg(&ctx->sgl);
-		if (err)
+		if (err) {
+			iov_iter_revert(&msg->msg_iter, len);
 			goto unlock;
+		}
 
 		copied += len;
-		iov_iter_advance(&msg->msg_iter, len);
 	}
 
 	err = 0;
-- 
cgit v1.2.3