From: Colin Ian King <colin.king@canonical.com>
Date: Mon, 22 Jan 2018 10:31:19 +0000
Subject: devlink: fix memory leak on 'resource'
Patch-mainline: v4.16-rc1
Git-commit: b75703de16301b80f1eedecafdf37bb02c9e155f
References: bsc#1112374

Currently, if the call to devlink_resource_find returns null then
the error exit path does not free the devlink_resource 'resource'
and a memory leak occurs. Fix this by kfree'ing resource on the
error exit path.

Detected by CoverityScan, CID#1464184 ("Resource leak")

Fixes: d9f9b9a4d05f ("devlink: Add support for resource abstraction")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 net/core/devlink.c |    1 +
 1 file changed, 1 insertion(+)

--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -3182,6 +3182,7 @@ int devlink_resource_register(struct dev
 			resource_list = &parent_resource->resource_list;
 			resource->parent = parent_resource;
 		} else {
+			kfree(resource);
 			err = -EINVAL;
 			goto out;
 		}