[3.5.y.z,extended,stable] Patch "mac80211: deinitialize ibss-internals after emptiness check" has been added to staging queue

Submitted by Herton Ronaldo Krzesinski on Dec. 10, 2012, 2:18 p.m.


Message ID 1355149084-7709-1-git-send-email-herton.krzesinski@canonical.com
State New
Headers show

Commit Message

Herton Ronaldo Krzesinski Dec. 10, 2012, 2:18 p.m.
This is a note to let you know that I have just added a patch titled

    mac80211: deinitialize ibss-internals after emptiness check

to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree 
which can be found at:


If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.y.z tree, see



From fa2939cbe519d96adef0848166fe1b548b23f6ed Mon Sep 17 00:00:00 2001
From: Simon Wunderlich <simon.wunderlich@s2003.tu-chemnitz.de>
Date: Tue, 13 Nov 2012 18:43:03 +0100
Subject: [PATCH] mac80211: deinitialize ibss-internals after emptiness check

commit b78a4932f5fb11fadf41e69c606a33fa6787574c upstream.

The check whether the IBSS is active and can be removed should be
performed before deinitializing the fields used for the check/search.
Otherwise, the configured BSS will not be found and removed properly.

To make it more clear for the future, rename sdata->u.ibss to the
local pointer ifibss which is used within the checks.

This behaviour was introduced by
("mac80211: fix IBSS teardown race")

Cc: Ignacy Gawedzki <i@lri.fr>
Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
 net/mac80211/ibss.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)


Patch hide | download patch | download mbox

diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index ebf6425..980b4f4 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -1154,10 +1154,6 @@  int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)


-	sdata->u.ibss.state = IEEE80211_IBSS_MLME_SEARCH;
-	memset(sdata->u.ibss.bssid, 0, ETH_ALEN);
-	sdata->u.ibss.ssid_len = 0;
 	active_ibss = ieee80211_sta_active_ibss(sdata);

 	if (!active_ibss && !is_zero_ether_addr(ifibss->bssid)) {
@@ -1178,6 +1174,10 @@  int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)

+	ifibss->state = IEEE80211_IBSS_MLME_SEARCH;
+	memset(ifibss->bssid, 0, ETH_ALEN);
+	ifibss->ssid_len = 0;
 	sta_info_flush(sdata->local, sdata);