From: Johannes Berg <johannes.berg@intel.com>
Date: Mon, 27 Jun 2022 10:28:31 +0000 (+0200)
Subject: wifi: mac80211: properly skip link info driver update
X-Git-Tag: block-6.0-2022-08-12~31^2~132^2~15
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=591e73ee3f737098723406bcfae43673add31881;p=linux-block.git

wifi: mac80211: properly skip link info driver update

If the interface isn't (yet) added to the driver, skip the
link info update. This was previously done for the BSS info
changes, but I forgot to copy the same check here.

Fixes: 7b7090b4c6a9 ("wifi: mac80211: split bss_info_changed method")
Reported-by: syzbot+bce2ca140cc00578ed07@syzkaller.appspotmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---

diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 929bbdf55213..c34f06039dda 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -281,6 +281,9 @@ void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata,
 	if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
 		return;
 
+	if (!check_sdata_in_driver(sdata))
+		return;
+
 	drv_link_info_changed(local, sdata, link_id, changed);
 }