The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 2ae2eb9dde18979b40629dd413b9adbd6c894cdf Mon Sep 17 00:00:00 2001
From: Pavel Begunkov asml.silence@gmail.com Date: Thu, 9 Sep 2021 13:56:27 +0100 Subject: [PATCH] io_uring: fail links of cancelled timeouts
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/fff625b44eeced3a5cae79f60e6acf3fbdf8f990.163119213... Signed-off-by: Jens Axboe axboe@kernel.dk
diff --git a/fs/io_uring.c b/fs/io_uring.c index b21a423a4de8..ffd91844b2e5 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -1482,6 +1482,8 @@ static void io_kill_timeout(struct io_kiocb *req, int status) struct io_timeout_data *io = req->async_data;
if (hrtimer_try_to_cancel(&io->timer) != -1) { + if (status) + req_set_fail(req); atomic_set(&req->ctx->cq_timeouts, atomic_read(&req->ctx->cq_timeouts) + 1); list_del_init(&req->timeout.list);