From 34f05f543f02350e920bddb7660ffdd4697aaf60 Mon Sep 17 00:00:00 2001 From: Arik Nemtsov Date: Thu, 4 Dec 2014 12:22:16 +0200 Subject: [PATCH] cfg80211: avoid mem leak on driver hint set In the already-set and intersect case of a driver-hint, the previous wiphy regdomain was not freed before being reset with a copy of the cfg80211 regdomain. Cc: stable@vger.kernel.org Signed-off-by: Arik Nemtsov Acked-by: Luis R. Rodriguez Signed-off-by: Johannes Berg --- net/wireless/reg.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/net/wireless/reg.c b/net/wireless/reg.c index 47be6163381c..7ddd16a51adf 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -1907,7 +1907,7 @@ static enum reg_request_treatment reg_process_hint_driver(struct wiphy *wiphy, struct regulatory_request *driver_request) { - const struct ieee80211_regdomain *regd; + const struct ieee80211_regdomain *regd, *tmp; enum reg_request_treatment treatment; treatment = __reg_process_hint_driver(driver_request); @@ -1927,7 +1927,10 @@ reg_process_hint_driver(struct wiphy *wiphy, reg_free_request(driver_request); return REG_REQ_IGNORE; } + + tmp = get_wiphy_regdom(wiphy); rcu_assign_pointer(wiphy->regd, regd); + rcu_free_regdom(tmp); } -- 2.20.1