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io_uring: fail links of cancelled timeouts

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commit 2ae2eb9dde18979b40629dd413b9adbd6c894cdf upstream.

When we cancel a timeout we should mark it with REQ_F_FAIL, so
linked requests are cancelled as well, but not queued for further
execution.

Cc: stable@vger.kernel.org
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/fff625b44eeced3a5cae79f60e6acf3fbdf8f990.1631192135.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Pavel Begunkov 2021-09-13 09:45:41 -06:00 committed by Greg Kroah-Hartman
parent 54eb6211b9
commit 548ee201fb
1 changed files with 2 additions and 0 deletions
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2
fs/io_uring.c
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@ -1498,6 +1498,8 @@ static void io_kill_timeout(struct io_kiocb *req, int status)
ret = hrtimer_try_to_cancel(&io->timer);
if (ret != -1) {
if (status)
req_set_fail_links(req);
atomic_set(&req->ctx->cq_timeouts,
atomic_read(&req->ctx->cq_timeouts) + 1);
list_del_init(&req->timeout.list);