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diff --git a/sys/netinet/tcp_input.c b/sys/netinet/tcp_input.c
--- a/sys/netinet/tcp_input.c
+++ b/sys/netinet/tcp_input.c
@@ -3022,6 +3022,7 @@
* we'll hang forever.
*/
if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
+ tcp_free_sackholes(tp);
soisdisconnected(so);
tcp_timer_activate(tp, TT_2MSL,
(tcp_fast_finwait2_recycle ?
diff --git a/sys/netinet/tcp_subr.c b/sys/netinet/tcp_subr.c
--- a/sys/netinet/tcp_subr.c
+++ b/sys/netinet/tcp_subr.c
@@ -2383,6 +2383,7 @@
#endif
INP_WLOCK_ASSERT(inp);
+ MPASS(TAILQ_EMPTY(&tp->snd_holes));
tcp_timer_stop(tp);
@@ -2394,9 +2395,6 @@
if (tp->t_flags & TF_TOE)
tcp_offload_detach(tp);
#endif
-
- tcp_free_sackholes(tp);
-
#ifdef TCPPCAP
/* Free the TCP PCAP queues. */
tcp_pcap_drain(&(tp->t_inpkts));
@@ -2531,6 +2529,7 @@
if (tp->t_state != TCPS_CLOSED)
tcp_state_change(tp, TCPS_CLOSED);
KASSERT(inp->inp_socket != NULL, ("tcp_close: inp_socket NULL"));
+ tcp_free_sackholes(tp);
soisdisconnected(so);
if (inp->inp_flags & INP_SOCKREF) {
inp->inp_flags &= ~INP_SOCKREF;
diff --git a/sys/netinet/tcp_timewait.c b/sys/netinet/tcp_timewait.c
--- a/sys/netinet/tcp_timewait.c
+++ b/sys/netinet/tcp_timewait.c
@@ -119,6 +119,7 @@
"(inp->inp_flags & INP_DROPPED) != 0"));
tcp_state_change(tp, TCPS_TIME_WAIT);
+ tcp_free_sackholes(tp);
soisdisconnected(inp->inp_socket);
if (tp->t_flags & TF_ACKNOW)
diff --git a/sys/netinet/tcp_usrreq.c b/sys/netinet/tcp_usrreq.c
--- a/sys/netinet/tcp_usrreq.c
+++ b/sys/netinet/tcp_usrreq.c
@@ -2777,6 +2777,7 @@
if (tp->t_acktime == 0)
tp->t_acktime = ticks;
if (tp->t_state >= TCPS_FIN_WAIT_2) {
+ tcp_free_sackholes(tp);
soisdisconnected(tptosocket(tp));
/* Prevent the connection hanging in FIN_WAIT_2 forever. */
if (tp->t_state == TCPS_FIN_WAIT_2) {

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