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-rw-r--r--net/mptcp/subflow.c20
1 files changed, 16 insertions, 4 deletions
diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c
index f3c06b8af92d..493b98a0825c 100644
--- a/net/mptcp/subflow.c
+++ b/net/mptcp/subflow.c
@@ -413,6 +413,20 @@ static void subflow_ulp_fallback(struct sock *sk,
tcp_sk(sk)->is_mptcp = 0;
}
+static void subflow_drop_ctx(struct sock *ssk)
+{
+ struct mptcp_subflow_context *ctx = mptcp_subflow_ctx(ssk);
+
+ if (!ctx)
+ return;
+
+ subflow_ulp_fallback(ssk, ctx);
+ if (ctx->conn)
+ sock_put(ctx->conn);
+
+ kfree_rcu(ctx, rcu);
+}
+
static struct sock *subflow_syn_recv_sock(const struct sock *sk,
struct sk_buff *skb,
struct request_sock *req,
@@ -485,10 +499,7 @@ create_child:
if (fallback_is_fatal)
goto dispose_child;
- if (ctx) {
- subflow_ulp_fallback(child, ctx);
- kfree_rcu(ctx, rcu);
- }
+ subflow_drop_ctx(child);
goto out;
}
@@ -537,6 +548,7 @@ out:
return child;
dispose_child:
+ subflow_drop_ctx(child);
tcp_rsk(req)->drop_req = true;
tcp_send_active_reset(child, GFP_ATOMIC);
inet_csk_prepare_for_destroy_sock(child);