diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index be168835445a..7a4ee57a37d4 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -4827,8 +4827,10 @@ static int io_setup_async_msg(struct io_kiocb *req,
 	if (async_msg->msg.msg_name)
 		async_msg->msg.msg_name = &async_msg->addr;
 	/* if were using fast_iov, set it to the new one */
-	if (!async_msg->free_iov)
-		async_msg->msg.msg_iter.iov = async_msg->fast_iov;
+	if (!kmsg->free_iov) {
+		size_t fast_idx = kmsg->msg.msg_iter.iov - kmsg->fast_iov;
+		async_msg->msg.msg_iter.iov = &async_msg->fast_iov[fast_idx];
+	}
 
 	return -EAGAIN;
 }