From 539cf23cb48835c69cc3d22edff28b92bd82bb18 Mon Sep 17 00:00:00 2001 From: Fedor Pchelkin Date: Wed, 26 Jul 2023 00:46:25 +0300 Subject: [PATCH] tipc: stop tipc crypto on failure in tipc_node_create [ Upstream commit de52e17326c3e9a719c9ead4adb03467b8fae0ef ] If tipc_link_bc_create() fails inside tipc_node_create() for a newly allocated tipc node then we should stop its tipc crypto and free the resources allocated with a call to tipc_crypto_start(). As the node ref is initialized to one to that point, just put the ref on tipc_link_bc_create() error case that would lead to tipc_node_free() be eventually executed and properly clean the node and its crypto resources. Found by Linux Verification Center (linuxtesting.org). Fixes: cb8092d70a6f ("tipc: move bc link creation back to tipc_node_create") Suggested-by: Xin Long Signed-off-by: Fedor Pchelkin Reviewed-by: Xin Long Link: https://lore.kernel.org/r/20230725214628.25246-1-pchelkin@ispras.ru Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin --- net/tipc/node.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/tipc/node.c b/net/tipc/node.c index 5e000fde8067..a9c5b6594889 100644 --- a/net/tipc/node.c +++ b/net/tipc/node.c @@ -583,7 +583,7 @@ struct tipc_node *tipc_node_create(struct net *net, u32 addr, u8 *peer_id, n->capabilities, &n->bc_entry.inputq1, &n->bc_entry.namedq, snd_l, &n->bc_entry.link)) { pr_warn("Broadcast rcv link creation failed, no memory\n"); - kfree(n); + tipc_node_put(n); n = NULL; goto exit; }