From e6508674cfd8659c4538932af9babb1a4efda24a Mon Sep 17 00:00:00 2001
From: Pavel Begunkov <asml.silence@gmail.com>
Date: Thu, 23 Jul 2020 20:17:20 +0300
Subject: [PATCH] io_uring: missed req_init_async() for IOSQE_ASYNC

to #29608102

commit 3e863ea3bb1a2203ae648eb272db0ce6a1a2072c upstream.

IOSQE_ASYNC branch of io_queue_sqe() is another place where an
unitialised req->work can be accessed (i.e. prior io_req_init_async()).
Nothing really bad though, it just looses IO_WQ_WORK_CONCURRENT flag.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Jiufei Xue <jiufei.xue@linux.alibaba.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
---
 fs/io_uring.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 2b3e1df22238..fd19c8b80317 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -5692,6 +5692,7 @@ static void io_queue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe)
 		 * Never try inline submit of IOSQE_ASYNC is set, go straight
 		 * to async execution.
 		 */
+		io_req_init_async(req);
 		req->work.flags |= IO_WQ_WORK_CONCURRENT;
 		io_queue_async_work(req);
 	} else {
-- 
GitLab