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authorStanislaw Gruszka <sgruszka@redhat.com>2013-07-23 13:56:50 +0200
committerJohannes Berg <johannes.berg@intel.com>2013-07-23 14:02:08 +0200
commitcd34f647a78e7f2296fcb72392b9e5c832793e65 (patch)
treeb6e027bf20bb1d00f060dba3e12fc9b4650c1ab1 /net/mac80211
parent40d18ff959fe8b847be4f7b03f84644a7c18211e (diff)
downloadlinux-cd34f647a78e7f2296fcb72392b9e5c832793e65.tar.gz
mac80211: fix monitor interface suspend crash regression
My commit:

commit 12e7f517029dad819c45eca9ca01fdb9ba57616b
Author: Stanislaw Gruszka <sgruszka@redhat.com>
Date:   Thu Feb 28 10:55:26 2013 +0100

    mac80211: cleanup generic suspend/resume procedures

removed check for deleting MONITOR and AP_VLAN when suspend. That can
cause a crash (i.e. in iwlagn_mac_remove_interface()) since we remove
interface in the driver that we did not add before.

Reference:
http://marc.info/?l=linux-kernel&m=137391815113860&w=2

Bisected-by: Ortwin Glück <odi@odi.ch>
Reported-and-tested-by: Ortwin Glück <odi@odi.ch>
Cc: stable@vger.kernel.org # 3.10
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/pm.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c
index 7fc5d0d8149a..340126204343 100644
--- a/net/mac80211/pm.c
+++ b/net/mac80211/pm.c
@@ -99,10 +99,13 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
 	}
 	mutex_unlock(&local->sta_mtx);
 
-	/* remove all interfaces */
+	/* remove all interfaces that were created in the driver */
 	list_for_each_entry(sdata, &local->interfaces, list) {
-		if (!ieee80211_sdata_running(sdata))
+		if (!ieee80211_sdata_running(sdata) ||
+		    sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
+		    sdata->vif.type == NL80211_IFTYPE_MONITOR)
 			continue;
+
 		drv_remove_interface(local, sdata);
 	}