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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>
This commit is contained in:
Ben Greear 2013-03-19 17:50:50 -07:00 committed by Johannes Berg
parent f9f475292d
commit 370bd00593
2 changed files with 6 additions and 3 deletions
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3
net/mac80211/mesh.c
View File

@ -1060,7 +1060,8 @@ void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local)
rcu_read_lock();
list_for_each_entry_rcu(sdata, &local->interfaces, list)
if (ieee80211_vif_is_mesh(&sdata->vif))
if (ieee80211_vif_is_mesh(&sdata->vif) &&
ieee80211_sdata_running(sdata))
ieee80211_queue_work(&local->hw, &sdata->work);
rcu_read_unlock();
}

6
net/mac80211/mlme.c
View File

@ -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();
}