From: <gregkh@linuxfoundation.org>
To: idryomov@gmail.com, elder@linaro.org, gregkh@linuxfoundation.org
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "rbd: fix double free on rbd_dev->header_name" has been added to the 4.2-stable tree
Date: Fri, 23 Oct 2015 10:42:08 -0700 [thread overview]
Message-ID: <14456221283629@kroah.com> (raw)
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 <stable@vger.kernel.org> know about it.
>From 3ebe138ac642a195c7f2efdb918f464734421fd6 Mon Sep 17 00:00:00 2001
From: Ilya Dryomov <idryomov@gmail.com>
Date: Mon, 31 Aug 2015 15:21:39 +0300
Subject: rbd: fix double free on rbd_dev->header_name
From: Ilya Dryomov <idryomov@gmail.com>
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 <idryomov@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/block/rbd.c | 1 -
1 file changed, 1 deletion(-)
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -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 idryomov@gmail.com are
queue-4.2/rbd-fix-double-free-on-rbd_dev-header_name.patch
reply other threads:[~2015-10-23 17:42 UTC|newest]
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