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io_uring: fail links when poll fails

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[ upstream commmit c487a5ad48831afa6784b368ec40d0ee50f2fe1b ]

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>
[pavel: backport]
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Pavel Begunkov
2022-08-29 14:30:22 +01:00
committed by Greg Kroah-Hartman
parent c41e79a0c4
commit 6c7259c837
1 changed files with 2 additions and 0 deletions
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2
fs/io_uring.c
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@@ -5844,6 +5844,8 @@ 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);