linux-kernel - [PATCH 4.19 073/100] aio: initialize kiocb private in case any filesystems expect it.

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Date:   Tue, 30 Apr 2019 13:38:42 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Christoph Hellwig <hch@....de>,
        Mike Marshall <hubcap@...ibond.com>,
        Jens Axboe <axboe@...nel.dk>,
        Guenter Roeck <linux@...ck-us.net>
Subject: [PATCH 4.19 073/100] aio: initialize kiocb private in case any filesystems expect it.

From: Mike Marshall <hubcap@...ibond.com>

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@....de>
Signed-off-by: Mike Marshall <hubcap@...ibond.com>
Signed-off-by: Jens Axboe <axboe@...nel.dk>
Cc: Guenter Roeck <linux@...ck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/aio.c |    1 +
 1 file changed, 1 insertion(+)

--- a/fs/aio.c
+++ b/fs/aio.c
@@ -1430,6 +1430,7 @@ static int aio_prep_rw(struct kiocb *req
 	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)