1 files changed, 7 insertions, 4 deletions

diff --git a/net/dccp/diag.c b/net/dccp/diag.c
index d8a3509b26f6..b21f261da75e 100644
--- a/net/dccp/diag.c
+++ b/net/dccp/diag.c
@@ -29,11 +29,14 @@ static void dccp_get_info(struct sock *sk, struct tcp_info *info)
         info->tcpi_backoff      = icsk->icsk_backoff;
         info->tcpi_pmtu         = icsk->icsk_pmtu_cookie;
 
-        if (dccp_msk(sk)->dccpms_send_ack_vector)
+        if (dp->dccps_hc_rx_ackvec != NULL)
                 info->tcpi_options |= TCPI_OPT_SACK;
 
-        ccid_hc_rx_get_info(dp->dccps_hc_rx_ccid, sk, info);
-        ccid_hc_tx_get_info(dp->dccps_hc_tx_ccid, sk, info);
+        if (dp->dccps_hc_rx_ccid != NULL)
+                ccid_hc_rx_get_info(dp->dccps_hc_rx_ccid, sk, info);
+
+        if (dp->dccps_hc_tx_ccid != NULL)
+                ccid_hc_tx_get_info(dp->dccps_hc_tx_ccid, sk, info);
 }
 
 static void dccp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
@@ -45,7 +48,7 @@ static void dccp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
                 dccp_get_info(sk, _info);
 }
 
-static struct inet_diag_handler dccp_diag_handler = {
+static const struct inet_diag_handler dccp_diag_handler = {
         .idiag_hashinfo  = &dccp_hashinfo,
         .idiag_get_info  = dccp_diag_get_info,
         .idiag_type      = DCCPDIAG_GETSOCK,