[PATCH 5.10 005/306] io_uring: fail links of cancelled timeouts

From: Greg Kroah-Hartman
Date: Thu Sep 16 2021 - 12:06:45 EST


From: Pavel Begunkov <asml.silence@xxxxxxxxx>

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@xxxxxxxxxxxxxxx
Signed-off-by: Pavel Begunkov <asml.silence@xxxxxxxxx>
Link: https://lore.kernel.org/r/fff625b44eeced3a5cae79f60e6acf3fbdf8f990.1631192135.git.asml.silence@xxxxxxxxx
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/io_uring.c | 2 ++
1 file changed, 2 insertions(+)

--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -1498,6 +1498,8 @@ static void io_kill_timeout(struct io_ki

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);