diff --git a/fs/io_uring.c b/fs/io_uring.c
index d0172cc4f6427b16f4784939fd691946b677eff7..691c9986914396102d901d76bb70b14745366acc 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -5083,6 +5083,9 @@ static void __io_queue_proc(struct io_poll_iocb *poll, struct io_poll_table *pt,
 			pt->error = -EINVAL;
 			return;
 		}
+		/* double add on the same waitqueue head, ignore */
+		if (poll->head == head)
+			return;
 		poll = kmalloc(sizeof(*poll), GFP_ATOMIC);
 		if (!poll) {
 			pt->error = -ENOMEM;