diff options
| author | Pavel Begunkov <asml.silence@gmail.com> | 2022-04-12 15:24:43 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-04-12 08:39:49 -0600 |
| commit | 0f8da75b51ac863b9435368bd50691718cc454b0 (patch) | |
| tree | b0cc3c6152d2f58e796432075eabffe0956a6a7c /fs/io_uring.c | |
| parent | 82733d168cbd3fe9dab603f05894316b99008924 (diff) | |
| download | linux-0f8da75b51ac863b9435368bd50691718cc454b0.tar.gz linux-0f8da75b51ac863b9435368bd50691718cc454b0.tar.bz2 linux-0f8da75b51ac863b9435368bd50691718cc454b0.zip | |
io_uring: fix assign file locking issue
io-wq work cancellation path can't take uring_lock as how it's done on
file assignment, we have to handle IO_WQ_WORK_CANCEL first, this fixes
encountered hangs.
Fixes: 6bf9c47a3989 ("io_uring: defer file assignment")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/0d9b9f37841645518503f6a207e509d14a286aba.1649773463.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/io_uring.c')
| -rw-r--r-- | fs/io_uring.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index 38e62b1c6297..8a931eb8a3a6 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -7277,16 +7277,18 @@ static void io_wq_submit_work(struct io_wq_work *work) if (timeout) io_queue_linked_timeout(timeout); - if (!io_assign_file(req, issue_flags)) { - err = -EBADF; - work->flags |= IO_WQ_WORK_CANCEL; - } /* either cancelled or io-wq is dying, so don't touch tctx->iowq */ if (work->flags & IO_WQ_WORK_CANCEL) { +fail: io_req_task_queue_fail(req, err); return; } + if (!io_assign_file(req, issue_flags)) { + err = -EBADF; + work->flags |= IO_WQ_WORK_CANCEL; + goto fail; + } if (req->flags & REQ_F_FORCE_ASYNC) { bool opcode_poll = def->pollin || def->pollout; |