| commit | 44eff40a32e8f5228ae041006352e32638ad2368 | [log] [tgz] |
|---|---|---|
| author | Pavel Begunkov <asml.silence@gmail.com> | Mon Jul 26 14:14:31 2021 +0100 |
| committer | Jens Axboe <axboe@kernel.dk> | Mon Jul 26 08:58:04 2021 -0600 |
| tree | 4cf9efc5d01517033f807345b27674e137fba238 | |
| parent | 991468dcf198bb87f24da330676724a704912b47 [diff] |
io_uring: fix io_prep_async_link locking io_prep_async_link() may be called after arming a linked timeout, automatically making it unsafe to traverse the linked list. Guard with completion_lock if there was a linked timeout. Cc: stable@vger.kernel.org # 5.9+ Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/93f7c617e2b4f012a2a175b3dab6bc2f27cebc48.1627304436.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>