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 dffa85d4dc7a0b1e6331867194b5af914486f73b..d5ea3c6167b55ffb4061e7dd0a8205ce467f4e10 100644 (file)
--- 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);