cfg80211/mac80211: correct qos-map locking
Since the RTNL can't always be held, use wdev/sdata locking for
the qos-map dereference in mac80211. This requires cfg80211 to
consistently lock it, which it was missing in one place.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 09d2e58..fd1020e 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -3854,7 +3854,7 @@
new_qos_map = NULL;
}
- old_qos_map = rtnl_dereference(sdata->qos_map);
+ old_qos_map = sdata_dereference(sdata->qos_map, sdata);
rcu_assign_pointer(sdata->qos_map, new_qos_map);
if (old_qos_map)
kfree_rcu(old_qos_map, rcu_head);
