[PATCH 3.12 027/146] cfg80211: free sme on connection failures

From: Jiri Slaby
Date: Mon Jun 09 2014 - 05:15:54 EST


From: Eliad Peller <eliad@xxxxxxxxxx>

3.12-stable review patch. If anyone has any objections, please let me know.

===============

commit c1fbb258846dfc425507a093922d2d001e54c3ea upstream.

cfg80211 is notified about connection failures by
__cfg80211_connect_result() call. However, this
function currently does not free cfg80211 sme.

This results in hanging connection attempts in some cases

e.g. when mac80211 authentication attempt is denied,
we have this function call:
ieee80211_rx_mgmt_auth() -> cfg80211_rx_mlme_mgmt() ->
cfg80211_process_auth() -> cfg80211_sme_rx_auth() ->
__cfg80211_connect_result()

but cfg80211_sme_free() is never get called.

Fixes: ceca7b712 ("cfg80211: separate internal SME implementation")
Signed-off-by: Eliad Peller <eliadx.peller@xxxxxxxxx>
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
net/wireless/sme.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/wireless/sme.c b/net/wireless/sme.c
index 20e86a95dc4e..2f844eec9c6d 100644
--- a/net/wireless/sme.c
+++ b/net/wireless/sme.c
@@ -242,7 +242,6 @@ void cfg80211_conn_work(struct work_struct *work)
NULL, 0, NULL, 0,
WLAN_STATUS_UNSPECIFIED_FAILURE,
false, NULL);
- cfg80211_sme_free(wdev);
}
wdev_unlock(wdev);
}
@@ -646,6 +645,7 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
cfg80211_unhold_bss(bss_from_pub(bss));
cfg80211_put_bss(wdev->wiphy, bss);
}
+ cfg80211_sme_free(wdev);
return;
}

--
1.9.3

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