[PATCH 6.6 167/331] SUNRPC: use request size to initialize bio_vec in svc_udp_sendto()

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6.6-stable review patch.  If anyone has any objections, please let me know.

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

From: Lucas Stach <l.stach@xxxxxxxxxxxxxx>

[ Upstream commit 1d9cabe2817edd215779dc9c2fe5e7ab9aac0704 ]

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@xxxxxxxxxxxxxx>
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 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







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