From: Johannes Berg <johannes.berg@xxxxxxxxx>
We need to RCU protect the chanctx_conf access, so
do that.
Fixes: 585625c955b1 ("mac80211_hwsim: check TX and STA bandwidth")
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
---
drivers/net/wireless/mac80211_hwsim.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index afdf48550588..4689db129aec 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -2202,11 +2202,14 @@ mac80211_hwsim_sta_rc_update(struct ieee80211_hw *hw,
if (!data->use_chanctx) {
confbw = data->bw;
} else {
- struct ieee80211_chanctx_conf *chanctx_conf =
- rcu_dereference(vif->chanctx_conf);
+ struct ieee80211_chanctx_conf *chanctx_conf;
+
+ rcu_read_lock();
+ chanctx_conf = rcu_dereference(vif->chanctx_conf);
if (!WARN_ON(!chanctx_conf))
confbw = chanctx_conf->def.width;
+ rcu_read_unlock();
}
WARN(bw > hwsim_get_chanwidth(confbw),
--
2.35.1
