--- /dev/null
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -858,6 +858,9 @@ int ath_tx_aggr_start(struct ath_softc *
+ txtid->paused = true;
+ *ssn = txtid->seq_start = txtid->seq_next;
+
++ memset(txtid->tx_buf, 0, sizeof(txtid->tx_buf));
++ txtid->baw_head = txtid->baw_tail = 0;
++
+ return 0;
+ }
+