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wifi: mac80211: mlme: Fix missing unlock on beacon RX

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Commit 98b0b46746 ("wifi: mac80211: mlme: use correct link_sta")
switched to link station instead of deflink and added some checks to do
that, which are done with the 'sta_mtx' mutex held. However, the error
path of these checks does not unlock 'sta_mtx' before returning.

Fixes: 98b0b46746 ("wifi: mac80211: mlme: use correct link_sta")
Signed-off-by: Rafael Mendonca <rafaelmendsr@gmail.com>
Link: https://lore.kernel.org/r/20220924184042.778676-1-rafaelmendsr@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Rafael Mendonca 2022-09-24 15:40:41 -03:00 committed by Johannes Berg
parent be92292b90
commit 883b8dc1a8
1 changed files with 6 additions and 2 deletions
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8
net/mac80211/mlme.c
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@ -5589,12 +5589,16 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_link_data *link,
mutex_lock(&local->sta_mtx);
sta = sta_info_get(sdata, sdata->vif.cfg.ap_addr);
if (WARN_ON(!sta))
if (WARN_ON(!sta)) {
mutex_unlock(&local->sta_mtx);
goto free;
}
link_sta = rcu_dereference_protected(sta->link[link->link_id],
lockdep_is_held(&local->sta_mtx));
if (WARN_ON(!link_sta))
if (WARN_ON(!link_sta)) {
mutex_unlock(&local->sta_mtx);
goto free;
}
changed |= ieee80211_recalc_twt_req(link, link_sta, elems);