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From: Pavel Begunkov <asml.silence@gmail.com>
To: Jens Axboe <axboe@kernel.dk>, io-uring@vger.kernel.org
Cc: syzbot+ba6fcd859210f4e9e109@syzkaller.appspotmail.com
Subject: [PATCH] io_uring: fix io_drain_req()
Date: Sun, 11 Jul 2021 22:41:13 +0100	[thread overview]
Message-ID: <4d3c53c4274ffff307c8ae062fc7fda63b978df2.1626039606.git.asml.silence@gmail.com> (raw)

io_drain_req() return whether the request has been consumed or not, not
an error code. Fix a stupid mistake slipped from optimisation patches.

Reported-by: syzbot+ba6fcd859210f4e9e109@syzkaller.appspotmail.com
Fixes: 76cc33d79175a ("io_uring: refactor io_req_defer()")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
 fs/io_uring.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 118215211bb2..0cac361bf6b8 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -6019,11 +6019,13 @@ static bool io_drain_req(struct io_kiocb *req)
 
 	ret = io_req_prep_async(req);
 	if (ret)
-		return ret;
+		goto fail;
 	io_prep_async_link(req);
 	de = kmalloc(sizeof(*de), GFP_KERNEL);
 	if (!de) {
-		io_req_complete_failed(req, -ENOMEM);
+		ret = -ENOMEM;
+fail:
+		io_req_complete_failed(req, ret);
 		return true;
 	}
 
-- 
2.32.0


             reply	other threads:[~2021-07-11 21:41 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-11 21:41 Pavel Begunkov [this message]
2021-07-11 22:39 ` [PATCH] io_uring: fix io_drain_req() Jens Axboe

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