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authorJohannes Berg <johannes.berg@intel.com>2013-05-10 19:23:40 +0200
committerJohannes Berg <johannes.berg@intel.com>2013-05-16 22:38:02 +0200
commit03cd7e4e1ea16cd151c799a33b5ca1fd41a464df (patch)
tree9671b8250f80a796e9dcf06933a4f9dc799600be /net
parent61f1598278876527314f5fc1d00cf0a4d525c1f7 (diff)
downloadlinux-03cd7e4e1ea16cd151c799a33b5ca1fd41a464df.tar.gz
cfg80211: fix wiphy_register error path
If rfkill_register() fails in wiphy_register() the struct device is unregistered but everything else isn't (regulatory, debugfs) and we even leave the wiphy instance on all internal lists even though it will likely be freed soon, which is clearly a problem. Fix this by cleaning up properly. Cc: stable@vger.kernel.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net')
-rw-r--r--net/wireless/core.c16
1 files changed, 10 insertions, 6 deletions
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 84c9ad7e1dc..6c9f8005cac 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -638,17 +638,21 @@ int wiphy_register(struct wiphy *wiphy)
* cfg80211_mutex lock
*/
res = rfkill_register(rdev->rfkill);
- if (res)
- goto out_rm_dev;
+ if (res) {
+ device_del(&rdev->wiphy.dev);
+
+ mutex_lock(&cfg80211_mutex);
+ debugfs_remove_recursive(rdev->wiphy.debugfsdir);
+ list_del_rcu(&rdev->list);
+ wiphy_regulatory_deregister(wiphy);
+ mutex_unlock(&cfg80211_mutex);
+ return res;
+ }
rtnl_lock();
rdev->wiphy.registered = true;
rtnl_unlock();
return 0;
-
-out_rm_dev:
- device_del(&rdev->wiphy.dev);
- return res;
}
EXPORT_SYMBOL(wiphy_register);