Messages in this thread Patch in this message | | | From | Fedor Pchelkin <> | Subject | [PATCH v2] tipc: stop tipc crypto on failure in tipc_node_create | Date | Wed, 26 Jul 2023 00:46:25 +0300 |
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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 <lucien.xin@gmail.com> Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru> --- v1->v2: simplify the patch per Xin Long's advice: putting the ref on error case would solve the problem more conveniently; update the patch description accordingly.
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; } -- 2.41.0
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