[PATCH AUTOSEL 4.19 29/38] of: unittest: fix memory leak in unittest_data_add

Sasha Levin
2019-10-30T15:55:34Z

From: Navid Emamdoost <navid.emamdoost@gmail.com>

[ 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@gmail.com>
Reviewed-by: Frank Rowand <frowand.list@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/of/unittest.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 7f42314da6ae3..bac4b4bbc33de 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -1159,6 +1159,7 @@ static int __init unittest_data_add(void)
of_fdt_unflatten_tree(unittest_data, NULL, &unittest_data_node);
if (!unittest_data_node) {
pr_warn("%s: No tree to attach; not running tests\n", __func__);
+ kfree(unittest_data);
return -ENODATA;
}

--
2.20.1