3.16.7-ckt20 -stable review patch.  If anyone has any objections, please let me 
know.

------------------

From: Ilya Dryomov <[email protected]>

commit 3ebe138ac642a195c7f2efdb918f464734421fd6 upstream.

If rbd_dev_image_probe() in rbd_dev_probe_parent() fails, header_name
is freed twice: once in rbd_dev_probe_parent() and then in its caller
rbd_dev_image_probe() (rbd_dev_image_probe() is called recursively to
handle parent images).

rbd_dev_probe_parent() is responsible for probing the parent, so it
shouldn't muck with clone's fields.

Signed-off-by: Ilya Dryomov <[email protected]>
Reviewed-by: Alex Elder <[email protected]>
Signed-off-by: Luis Henriques <[email protected]>
---
 drivers/block/rbd.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 4242da3b09da..59584862a01b 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -5058,7 +5058,6 @@ static int rbd_dev_probe_parent(struct rbd_device 
*rbd_dev)
 out_err:
        if (parent) {
                rbd_dev_unparent(rbd_dev);
-               kfree(rbd_dev->header_name);
                rbd_dev_destroy(parent);
        } else {
                rbd_put_client(rbdc);
--
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