3.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Arik Nemtsov <arik@xxxxxxxxxx>
commit 34f05f543f02350e920bddb7660ffdd4697aaf60 upstream.
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.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@xxxxxxxxx>
Acked-by: Luis R. Rodriguez <mcgrof@xxxxxxxx>
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/wireless/reg.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -1760,7 +1760,7 @@ 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);
@@ -1780,7 +1780,10 @@ reg_process_hint_driver(struct wiphy *wi
reg_free_request(driver_request);
return REG_REQ_IGNORE;
}
+
+ tmp = get_wiphy_regdom(wiphy);
rcu_assign_pointer(wiphy->regd, regd);
+ rcu_free_regdom(tmp);
}
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