From: Madhuparna Bhowmik madhuparnabhowmik10@gmail.com
[ Upstream commit 8ca47eb9f9e4e10e7e7fa695731a88941732c38d ]
The function sta_info_get_by_idx() uses RCU list primitive. It is called with local->sta_mtx held from mac80211/cfg.c. Add lockdep expression to avoid any false positive RCU list warnings.
Signed-off-by: Madhuparna Bhowmik madhuparnabhowmik10@gmail.com Link: https://lore.kernel.org/r/20200409082906.27427-1-madhuparnabhowmik10@gmail.c... Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- net/mac80211/sta_info.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index 21b1422b1b1c3..b1669f0244706 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -217,7 +217,8 @@ struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, struct sta_info *sta; int i = 0;
- list_for_each_entry_rcu(sta, &local->sta_list, list) { + list_for_each_entry_rcu(sta, &local->sta_list, list, + lockdep_is_held(&local->sta_mtx)) { if (sdata != sta->sdata) continue; if (i < idx) {