cfg80211: ignore supported rates for nonexistant bands on scan

Fixes wpa_supplicant p2p_find on 5GHz-only devices

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index e20c27ff0f14..138dc3bb8b67 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -5349,6 +5349,10 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
                                 err = -EINVAL;
                                 goto out_free;
                         }
+
+                        if (!wiphy->bands[band])
+                                continue;
+
                         err = ieee80211_get_ratemask(wiphy->bands[band],
                                                      nla_data(attr),
                                                      nla_len(attr),