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-rw-r--r--include/net/sock.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/sock.h b/include/net/sock.h
index 48e4d5c38f85..8c85791fc196 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1697,6 +1697,7 @@ static inline void sock_orphan(struct sock *sk)
static inline void sock_graft(struct sock *sk, struct socket *parent)
{
+ WARN_ON(parent->sk);
write_lock_bh(&sk->sk_callback_lock);
sk->sk_wq = parent->wq;
parent->sk = sk;