[PATCH AUTOSEL 4.4 11/13] of: unittest: fix memory leak in unittest_data_add

[Sasha Levin]

From: Navid Emamdoost <navid.emamdoost@xxxxxxxxx>

[ Upstream commit e13de8fe0d6a51341671bbe384826d527afe8d44 ]

In unittest_data_add, a copy buffer is created via kmemdup. This buffer
is leaked if of_fdt_unflatten_tree fails. The release for the
unittest_data buffer is added.

Fixes: b951f9dc7f25 ("Enabling OF selftest to run without machine's devicetree")
Signed-off-by: Navid Emamdoost <navid.emamdoost@xxxxxxxxx>
Reviewed-by: Frank Rowand <frowand.list@xxxxxxxxx>
Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/of/unittest.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 2eac3df7dd290..af9e4785b7a6e 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -924,6 +924,7 @@ static int __init unittest_data_add(void)
 	of_fdt_unflatten_tree(unittest_data, &unittest_data_node);
 	if (!unittest_data_node) {
 		pr_warn("%s: No tree to attach; not running tests\n", __func__);
+		kfree(unittest_data);
 		return -ENODATA;
 	}
 	of_node_set_flag(unittest_data_node, OF_DETACHED);
-- 
2.20.1