Function radix_tree_insert() returns errors if the node hasn't
been initialized and added to the tree.
"kfree(node)" and return value "NULL" of node_get() help
to avoid using unclear node in other calls.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: 0c2204a4ad71 ("net: qrtr: Migrate nameservice to kernel from userspace")
Signed-off-by: Natalia Petrova <n.petrova@xxxxxxxxxx>
---
net/qrtr/ns.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/net/qrtr/ns.c b/net/qrtr/ns.c
index 1990d496fcfc..e595079c2caf 100644
--- a/net/qrtr/ns.c
+++ b/net/qrtr/ns.c
@@ -83,7 +83,10 @@ static struct qrtr_node *node_get(unsigned int node_id)
node->id = node_id;
- radix_tree_insert(&nodes, node_id, node);
+ if (radix_tree_insert(&nodes, node_id, node)) {
+ kfree(node);
+ return NULL;
+ }
return node;
}
--
2.34.1
