Patch "rbd: fix double free on rbd_dev->header_name" has been added to the 4.2-stable tree

This is a note to let you know that I've just added the patch titled

    rbd: fix double free on rbd_dev->header_name

to the 4.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
rbd-fix-double-free-on-rbd_dev-header_name.patch
and it can be found in the queue-4.2 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Ilya Dryomov <[email protected]>
Date: Mon, 31 Aug 2015 15:21:39 +0300
Subject: rbd: fix double free on rbd_dev->header_name

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.

---
 drivers/block/rbd.c |    1 -
 1 file changed, 1 deletion(-)

@@ -5201,7 +5201,6 @@ static int rbd_dev_probe_parent(struct r
 out_err:
 	if (parent) {
 		rbd_dev_unparent(rbd_dev);
-		kfree(rbd_dev->header_name);
 		rbd_dev_destroy(parent);
 	} else {
 		rbd_put_client(rbdc);

Patches currently in stable-queue which might be from [email protected] are

queue-4.2/rbd-fix-double-free-on-rbd_dev-header_name.patch