提交 5c487bb9 编写于 作者: S Song Liu 提交者: David S. Miller

tcp: tracepoint: only call trace_tcp_send_reset with full socket

tracepoint tcp_send_reset requires a full socket to work. However, it
may be called when in TCP_TIME_WAIT:

        case TCP_TW_RST:
                tcp_v6_send_reset(sk, skb);
                inet_twsk_deschedule_put(inet_twsk(sk));
                goto discard_it;

To avoid this problem, this patch checks the socket with sk_fullsock()
before calling trace_tcp_send_reset().

Fixes: c24b14c4 ("tcp: add tracepoint trace_tcp_send_reset")
Signed-off-by: NSong Liu <songliubraving@fb.com>
Reviewed-by: NLawrence Brakmo <brakmo@fb.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 043e337f
......@@ -705,6 +705,7 @@ static void tcp_v4_send_reset(const struct sock *sk, struct sk_buff *skb)
*/
if (sk) {
arg.bound_dev_if = sk->sk_bound_dev_if;
if (sk_fullsock(sk))
trace_tcp_send_reset(sk, skb);
}
......
......@@ -942,6 +942,7 @@ static void tcp_v6_send_reset(const struct sock *sk, struct sk_buff *skb)
if (sk) {
oif = sk->sk_bound_dev_if;
if (sk_fullsock(sk))
trace_tcp_send_reset(sk, skb);
}
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册