af_unix: Use skb_queue_len_lockless() in sk_diag_show_rqlen().
We can dump the socket queue length via UNIX_DIAG by specifying
UDIAG_SHOW_RQLEN.
If sk->sk_state is TCP_LISTEN, we return the recv queue length,
but here we do not hold recvq lock.
Let's use skb_queue_len_lockless() in sk_diag_show_rqlen().
Fixes: c9da99e647
("unix_diag: Fixup RQLEN extension report")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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@ -104,7 +104,7 @@ static int sk_diag_show_rqlen(struct sock *sk, struct sk_buff *nlskb)
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struct unix_diag_rqlen rql;
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if (READ_ONCE(sk->sk_state) == TCP_LISTEN) {
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rql.udiag_rqueue = sk->sk_receive_queue.qlen;
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rql.udiag_rqueue = skb_queue_len_lockless(&sk->sk_receive_queue);
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rql.udiag_wqueue = sk->sk_max_ack_backlog;
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} else {
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rql.udiag_rqueue = (u32) unix_inq_len(sk);
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