From: Hillf Danton <hdanton@sina.com>
Date: Wed, 1 Apr 2020 09:19:33 +0000 (+0800)
Subject: io_uring: add missing finish_wait() in io_sq_thread()
X-Git-Tag: v5.7-rc1~28^2~16
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=10bea96dcc13ad841d53bdcc9d8e731e9e0ad58f;p=thirdparty%2Fkernel%2Flinux.git

io_uring: add missing finish_wait() in io_sq_thread()

Add it to pair with prepare_to_wait() in an attempt to avoid
anything weird in the field.

Fixes: b41e98524e42 ("io_uring: add per-task callback handler")
Reported-by: syzbot+0c3370f235b74b3cfd97@syzkaller.appspotmail.com
Signed-off-by: Hillf Danton <hdanton@sina.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 7b50879046405..10645077d6b4a 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -5968,6 +5968,7 @@ static int io_sq_thread(void *data)
 				}
 				if (current->task_works) {
 					task_work_run();
+					finish_wait(&ctx->sqo_wait, &wait);
 					continue;
 				}
 				if (signal_pending(current))