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cfg80211: fix netns error unwinding bug 

The error unwinding code in set_netns has a bug
that will make it run into a BUG_ON if passed a
bad wiphy index, fix by not trying to unlock a
wiphy that doesn't exist.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2009-10-08 21:02:02 +02:00 committed by John W. Linville
parent 7e937c633f
commit 8a8e05e5d8
1 changed files with 2 additions and 1 deletions
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3
net/wireless/nl80211.c
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@ -4029,7 +4029,7 @@ static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
rdev = cfg80211_get_dev_from_info(info); rdev = cfg80211_get_dev_from_info(info);
if (IS_ERR(rdev)) { if (IS_ERR(rdev)) {
err = PTR_ERR(rdev); err = PTR_ERR(rdev);
goto out; goto out_rtnl;
} }
net = get_net_ns_by_pid(pid); net = get_net_ns_by_pid(pid);
@ -4049,6 +4049,7 @@ static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
put_net(net); put_net(net);
out: out:
cfg80211_unlock_rdev(rdev); cfg80211_unlock_rdev(rdev);
out_rtnl:
rtnl_unlock(); rtnl_unlock();
return err; return err;
} }