[PATCH] io_uring/net: fix uninitialised addr

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

Don't forget to initialise and set addr in io_sendzc(), so if it goes
async we can copy it.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
 io_uring/net.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/io_uring/net.c b/io_uring/net.c
index 4eaeb805e720..0af8a02df580 100644
--- a/io_uring/net.c
+++ b/io_uring/net.c
@@ -975,7 +975,7 @@ static int io_sg_from_iter(struct sock *sk, struct sk_buff *skb,
 
 int io_sendzc(struct io_kiocb *req, unsigned int issue_flags)
 {
-	struct sockaddr_storage __address, *addr;
+	struct sockaddr_storage __address, *addr = NULL;
 	struct io_ring_ctx *ctx = req->ctx;
 	struct io_sendzc *zc = io_kiocb_to_cmd(req, struct io_sendzc);
 	struct io_notif_slot *notif_slot;
@@ -1012,12 +1012,13 @@ int io_sendzc(struct io_kiocb *req, unsigned int issue_flags)
 		if (req_has_async_data(req)) {
 			struct io_async_msghdr *io = req->async_data;
 
-			msg.msg_name = &io->addr;
+			msg.msg_name = addr = &io->addr;
 		} else {
 			ret = move_addr_to_kernel(zc->addr, zc->addr_len, &__address);
 			if (unlikely(ret < 0))
 				return ret;
 			msg.msg_name = (struct sockaddr *)&__address;
+			addr = &__address;
 		}
 		msg.msg_namelen = zc->addr_len;
 	}
-- 
2.37.2