mac80211: Don't restart sta-timer if not associated.

I found another crash when deleting lots of virtual stations
in a congested environment.  I think the problem is that
the ieee80211_mlme_notify_scan_completed could call
ieee80211_restart_sta_timer for a stopped interface
that was about to be deleted.

With the following patch I am unable to reproduce the
crash.

Signed-off-by: Ben Greear <greearb@candelatech.com>
[move check, also make the same change in mesh]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 141577412d84..82cc30318a86 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -3608,8 +3608,10 @@ void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
 
         /* Restart STA timers */
         rcu_read_lock();
-        list_for_each_entry_rcu(sdata, &local->interfaces, list)
-                ieee80211_restart_sta_timer(sdata);
+        list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+                if (ieee80211_sdata_running(sdata))
+                        ieee80211_restart_sta_timer(sdata);
+        }
         rcu_read_unlock();
 }