Whenever IOSQE_ASYNC is set, requests will be punted to async without
getting into io_issue_req() and without proper preparation done (e.g.
io_req_defer_prep()). Hence they will be left uninitialised.
Prepare them before punting.
Signed-off-by: Pavel Begunkov <asml.silence@xxxxxxxxx>
---
fs/io_uring.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 09503d1e9e45..cdbc711ae5fd 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -4558,11 +4558,15 @@ static void io_queue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe)
ret = io_req_defer(req, sqe);
if (ret) {
if (ret != -EIOCBQUEUED) {
+fail_req:
io_cqring_add_event(req, ret);
req_set_fail_links(req);
io_double_put_req(req);
}
} else if (req->flags & REQ_F_FORCE_ASYNC) {
+ ret = io_req_defer_prep(req, sqe);
+ if (unlikely(ret < 0))
+ goto fail_req;
/*
* Never try inline submit of IOSQE_ASYNC is set, go straight
* to async execution.
--
2.24.0
