cfg80211: fix NULL pointer deference in reg_device_remove()
We won't ever get here as regulatory_hint_core() can only fail
on -ENOMEM and in that case we don't initialize cfg80211 but this is
technically correct code.
This is actually good for stable, where we don't check for -ENOMEM
failure on __regulatory_hint()'s failure.
Cc: stable@kernel.org
Reported-by: Quentin Armitage <Quentin@armitage.org.uk>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 6327e16..6c1993d 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -2095,11 +2095,12 @@
/* Caller must hold cfg80211_mutex */
void reg_device_remove(struct wiphy *wiphy)
{
- struct wiphy *request_wiphy;
+ struct wiphy *request_wiphy = NULL;
assert_cfg80211_lock();
- request_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx);
+ if (last_request)
+ request_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx);
kfree(wiphy->regd);
if (!last_request || !request_wiphy)