Looking at 021d53a3d87e ("wifi: mac80211: fix NULL dereference at band check in starting tx ba
session"), can the following be useful for older (e.g. 5.10) kernels without any MLO support?
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index 4b4ab1961068..1a89ba2aecaa 100644
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -595,7 +595,8 @@ int ieee80211_start_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid,
return -EINVAL;
if (!pubsta->ht_cap.ht_supported &&
- sta->sdata->vif.bss_conf.chandef.chan->band != NL80211_BAND_6GHZ)
+ !pubsta->vht_cap.vht_supported &&
+ !pubsta->he_cap.has_he)
return -EINVAL;
if (WARN_ON_ONCE(!local->ops->ampdu_action))
Dmitry
