From: Pavel Begunkov <asml.silence@gmail.com>
Date: Tue, 21 Jun 2022 23:00:35 +0000 (+0100)
Subject: io_uring: fail links when poll fails
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=c487a5ad48831afa6784b368ec40d0ee50f2fe1b;p=linux.git

io_uring: fail links when poll fails

Don't forget to cancel all linked requests of poll request when
__io_arm_poll_handler() failed.

Fixes: aa43477b04025 ("io_uring: poll rework")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/a78aad962460f9fdfe4aa4c0b62425c88f9415bc.1655852245.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/fs/io_uring.c b/fs/io_uring.c
index dffa85d4dc7a0..d5ea3c6167b55 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -7405,6 +7405,8 @@ static int io_poll_add(struct io_kiocb *req, unsigned int issue_flags)
 	ipt.pt._qproc = io_poll_queue_proc;
 
 	ret = __io_arm_poll_handler(req, &req->poll, &ipt, poll->events);
+	if (!ret && ipt.error)
+		req_set_fail(req);
 	ret = ret ?: ipt.error;
 	if (ret)
 		__io_req_complete(req, issue_flags, ret, 0);