From 284b38b6902a7154e3675482418a7b6df47808fe Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 27 Jun 2022 12:49:03 +0200 Subject: wifi: nl80211: acquire wdev mutex for dump_survey At least the quantenna driver calls wdev_chandef() here which now requires the lock, so acquire it. Fixes: 7b0a0e3c3a88 ("wifi: cfg80211: do some rework towards MLO link APIs") Signed-off-by: Johannes Berg --- net/wireless/nl80211.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'net/wireless') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index b50ba1803595..886d964242ae 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -10233,7 +10233,9 @@ static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb) } while (1) { + wdev_lock(wdev); res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey); + wdev_unlock(wdev); if (res == -ENOENT) break; if (res) -- cgit v1.2.3