| commit | 4ea672ab694c23886b52e97cee10dea056e43e62 | [log] [tgz] |
|---|---|---|
| author | Pavel Begunkov <asml.silence@gmail.com> | Wed Oct 20 09:53:02 2021 +0100 |
| committer | Jens Axboe <axboe@kernel.dk> | Wed Oct 20 09:54:16 2021 -0600 |
| tree | a49ff15c524951452747ecfbdc24e4fad32180b7 | |
| parent | e139a1ec92f8dbaaa7380d7e7ea17e148d473d06 [diff] |
io_uring: fix ltimeout unprep
io_unprep_linked_timeout() is broken, first it needs to return back
REQ_F_ARM_LTIMEOUT, so the linked timeout is enqueued and disarmed. But
now we refcounted it, and linked timeouts may get not executed at all,
leaking a request.
Just kill the unprep optimisation.
Fixes: 906c6caaf586 ("io_uring: optimise io_prep_linked_timeout()")
Reported-by: Beld Zhang <beldzhang@gmail.com>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/51b8e2bfc4bea8ee625cf2ba62b2a350cc9be031.1634719585.git.asml.silence@gmail.com
Link: https://github.com/axboe/liburing/issues/460
Reported-by: Beld Zhang <beldzhang@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>