From: Ilya Dryomov <idryomov@xxxxxxxxx>
This patch has been added to the 3.18 stable tree. If you have any
objections, please let us know.
===============
[ Upstream commit 3ebe138ac642a195c7f2efdb918f464734421fd6 ]
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@xxxxxxxxx>
Reviewed-by: Alex Elder <elder@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
---
drivers/block/rbd.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index dc1ca84..7327c36 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -5198,7 +5198,6 @@ 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);
--
2.5.0
--
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