From: Ilya Dryomov <idryomov@gmail.com>
Date: Mon, 31 Aug 2015 12:21:39 +0000 (+0300)
Subject: rbd: fix double free on rbd_dev->header_name
X-Git-Tag: omap-for-v4.3/fixes-rc1~31^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3ebe138ac642a195c7f2efdb918f464734421fd6;p=pandora-kernel.git

rbd: fix double free on rbd_dev->header_name

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 <idryomov@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>
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