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-rw-r--r--net/mptcp/subflow.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c
index bf808f1fabe5..73e66a406d99 100644
--- a/net/mptcp/subflow.c
+++ b/net/mptcp/subflow.c
@@ -313,12 +313,17 @@ void mptcp_subflow_reset(struct sock *ssk)
struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk);
struct sock *sk = subflow->conn;
+ /* must hold: tcp_done() could drop last reference on parent */
+ sock_hold(sk);
+
tcp_set_state(ssk, TCP_CLOSE);
tcp_send_active_reset(ssk, GFP_ATOMIC);
tcp_done(ssk);
if (!test_and_set_bit(MPTCP_WORK_CLOSE_SUBFLOW, &mptcp_sk(sk)->flags) &&
schedule_work(&mptcp_sk(sk)->work))
- sock_hold(sk);
+ return; /* worker will put sk for us */
+
+ sock_put(sk);
}
static void subflow_finish_connect(struct sock *sk, const struct sk_buff *skb)