netdev - [PATCH] SUNRPC: use request size to initialize bio_vec in svc_udp

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Message-Id: <20240117210628.1534046-1-l.stach@pengutronix.de>
Date: Wed, 17 Jan 2024 22:06:28 +0100
From: Lucas Stach <l.stach@...gutronix.de>
To: Chuck Lever <chuck.lever@...cle.com>,
	Jeff Layton <jlayton@...nel.org>
Cc: Neil Brown <neilb@...e.de>,
	Olga Kornievskaia <kolga@...app.com>,
	Dai Ngo <Dai.Ngo@...cle.com>,
	Tom Talpey <tom@...pey.com>,
	Trond Myklebust <trond.myklebust@...merspace.com>,
	Anna Schumaker <anna@...nel.org>,
	linux-nfs@...r.kernel.org,
	netdev@...r.kernel.org,
	kernel@...gutronix.de,
	patchwork-lst@...gutronix.de
Subject: [PATCH] SUNRPC: use request size to initialize bio_vec in svc_udp_sendto()

Use the proper size when setting up the bio_vec, as otherwise only
zero-length UDP packets will be sent.

Fixes: baabf59c2414 ("SUNRPC: Convert svc_udp_sendto() to use the per-socket bio_vec array")
Signed-off-by: Lucas Stach <l.stach@...gutronix.de>
---
 net/sunrpc/svcsock.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 998687421fa6..e0ce4276274b 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -717,12 +717,12 @@ static int svc_udp_sendto(struct svc_rqst *rqstp)
 				ARRAY_SIZE(rqstp->rq_bvec), xdr);
 
 	iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, rqstp->rq_bvec,
-		      count, 0);
+		      count, rqstp->rq_res.len);
 	err = sock_sendmsg(svsk->sk_sock, &msg);
 	if (err == -ECONNREFUSED) {
 		/* ICMP error on earlier request. */
 		iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, rqstp->rq_bvec,
-			      count, 0);
+			      count, rqstp->rq_res.len);
 		err = sock_sendmsg(svsk->sk_sock, &msg);
 	}
 
-- 
2.43.0