mac80211: fix off-channel mgmt-tx uninitialized variable usage

[linux-2.6-block.git] / net / mac80211 / cfg.c

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index c2bd1b6a69224e4e07b6247c71077e2a79939dac..da471eef07bb1a6ba6e42d3e5b570dbdff6c21e3 100644 (file)
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -3454,8 +3454,12 @@ static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
                        goto out_unlock;
                }
        } else {
-               /* for cookie below */
-               ack_skb = skb;
+               /* Assign a dummy non-zero cookie, it's not sent to
+                * userspace in this case but we rely on its value
+                * internally in the need_offchan case to distinguish
+                * mgmt-tx from remain-on-channel.
+                */
+               *cookie = 0xffffffff;
        }
 
        if (!need_offchan) {