From a99d02483a40b9410d8a7af3b653ebc3f106280f Mon Sep 17 00:00:00 2001 From: Christian Lamparter Date: Sun, 19 Jul 2009 22:09:32 +0200 Subject: [PATCH] mac80211: do not monitor the connection while scanning mac80211 constantly monitors the connection to the associated AP in order to check if it is out of reach/dead. This is absolutely fine most of the time. Except when there is a scheduled scan for the whole neighborhood. After all this path could trigger while scanning on different channel. Or even worse: this AP probing triggers a WARN_ON in rate_lowest_index when the scan code did a band transition! ( http://www.kerneloops.org/raw.php?rawid=449304 ) Reported-by: Larry Finger Signed-off-by: Christian Lamparter Tested-by: Larry Finger Signed-off-by: John W. Linville --- net/mac80211/mlme.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index e3b3156aca9e..523c0d994d15 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -2213,6 +2213,9 @@ static void ieee80211_sta_monitor_work(struct work_struct *work) container_of(work, struct ieee80211_sub_if_data, u.mgd.monitor_work); + if (sdata->local->sw_scanning || sdata->local->hw_scanning) + return; + ieee80211_mgd_probe_ap(sdata, false); } -- 2.20.1