io_uring/net: restore msg_control on sendzc retry

cac9e44 ("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: [email protected] Fixes: 493108d ("io_uring/net: zerocopy sendmsg") Link: axboe/liburing#1067 Signed-off-by: Pavel Begunkov <[email protected]> Link: https://lore.kernel.org/r/cc1d5d9df0576fa66ddad4420d240a98a020b267.1712596179.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <[email protected]>
sirdarckcat · Apr 9, 2024 · 4fe82ae · 4fe82ae
1 parent 978e5c1
commit 4fe82ae
Showing 1 changed file with 1 addition and 0 deletions.
diff --git 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)