sctp: delete active ICMP proto unreachable timer when free transport

transport may be free before ICMP proto unreachable timer expire, so
we should delete active ICMP proto unreachable timer when transport
is going away.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/net/sctp/transport.c b/net/sctp/transport.c
index 4a368038d46f..165d54e07fcd 100644
--- a/net/sctp/transport.c
+++ b/net/sctp/transport.c
@@ -173,6 +173,10 @@ void sctp_transport_free(struct sctp_transport *transport)
             del_timer(&transport->T3_rtx_timer))
                 sctp_transport_put(transport);
 
+        /* Delete the ICMP proto unreachable timer if it's active. */
+        if (timer_pending(&transport->proto_unreach_timer) &&
+            del_timer(&transport->proto_unreach_timer))
+                sctp_association_put(transport->asoc);
 
         sctp_transport_put(transport);
 }