From: Mike Marshall <hubcap@omnibond.com>
Date: Tue, 5 Feb 2019 14:13:35 -0500
Subject: [08/14] aio: initialize kiocb private in case any filesystems expect
 it.
Origin: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit?id=2afa01cd9186974051b38b7d1f31bb2407e41e3a

commit ec51f8ee1e63498e9f521ec0e5a6d04622bb2c67 upstream.

A recent optimization had left private uninitialized.

Fixes: 2bc4ca9bb600 ("aio: don't zero entire aio_kiocb aio_get_req()")
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/aio.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/aio.c b/fs/aio.c
index f6ce01ca6903..d74fc9e112ac 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -1430,6 +1430,7 @@ static int aio_prep_rw(struct kiocb *req, const struct iocb *iocb)
 	if (unlikely(!req->ki_filp))
 		return -EBADF;
 	req->ki_complete = aio_complete_rw;
+	req->private = NULL;
 	req->ki_pos = iocb->aio_offset;
 	req->ki_flags = iocb_flags(req->ki_filp);
 	if (iocb->aio_flags & IOCB_FLAG_RESFD)