[PATCH wireless 07/10] wifi: mac80211: add HE 6 GHz capability in the scan elems len

From: Johannes Berg <redacted>

The HE 6 GHz Band Capability element is in the probe request for
every band if 6 GHz is supported, so add the size to scan_ies_len.

Otherwise, building probe request elements can fail, triggering the
WARN_ON in __ieee80211_start_scan().

Assisted-by: LLM
Fixes: 2ad2274c58ee ("mac80211: Add HE 6GHz capabilities element to probe request")
Reported-by: syzbot+f961b9f94edbc266f1f8@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=f961b9f94edbc266f1f8
Signed-off-by: Johannes Berg <redacted>
---
 net/mac80211/main.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index a59837b9f480..6408e8464338 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c

@@ -1453,6 +1453,10 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 			sizeof(struct ieee80211_he_mcs_nss_supp) +
 			IEEE80211_HE_PPE_THRES_MAX_LEN;
 
+		if (local->hw.wiphy->bands[NL80211_BAND_6GHZ])
+			local->scan_ies_len +=
+				3 + sizeof(struct ieee80211_he_6ghz_capa);
+
 		if (supp_eht)
 			local->scan_ies_len +=
 				3 + sizeof(struct ieee80211_eht_cap_elem) +

-- 
2.55.0