[PATCH for-6.9] io_uring/net: restore msg_control on sendzc retry

[Pavel Begunkov <asml.silence@gmail.com>]

cac9e4418f4cb ("io_uring/net: save msghdr->msg_control for retries")
reinstatiates msg_control before every __sys_sendmsg_sock(), since the
function can overwrite the value in msghdr. We need to do same for
zerocopy sendmsg.

Cc: stable@vger.kernel.org
Link: https://github.com/axboe/liburing/issues/1067
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
 io_uring/net.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/io_uring/net.c b/io_uring/net.c
index 1e7665ff6ef7..4afb475d4197 100644
--- a/io_uring/net.c
+++ b/io_uring/net.c
@@ -1276,6 +1276,7 @@ int io_sendmsg_zc(struct io_kiocb *req, unsigned int issue_flags)
 
 	if (req_has_async_data(req)) {
 		kmsg = req->async_data;
+		kmsg->msg.msg_control_user = sr->msg_control;
 	} else {
 		ret = io_sendmsg_copy_hdr(req, &iomsg);
 		if (ret)
-- 
2.44.0