From: Jens Axboe <axboe@kernel.dk>
Date: Tue, 29 Mar 2022 16:50:03 +0000 (-0600)
Subject: io_uring: fail links if msg-ring doesn't succeeed
X-Git-Tag: v5.18-rc1~22^2~1
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=9666d4206e9a14ff612e374b6b572b3efc797d46;p=thirdparty%2Fkernel%2Flinux.git

io_uring: fail links if msg-ring doesn't succeeed

We must always call req_set_fail() if the request is failed, otherwise
we won't sever links for dependent chains correctly.

Fixes: 4f57f06ce218 ("io_uring: add support for IORING_OP_MSG_RING command")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 39a9ff31dbc56..923410937dc72 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -4500,6 +4500,8 @@ static int io_msg_ring(struct io_kiocb *req, unsigned int issue_flags)
 		ret = 0;
 	}
 
+	if (ret < 0)
+		req_set_fail(req);
 	__io_req_complete(req, issue_flags, ret, 0);
 	return 0;
 }