linux-kernel - [ 041/102] mac80211: fix ethtool stats for non-station interfaces

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Date:	Thu,  8 Aug 2013 18:57:17 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Johannes Berg <johannes@...solutions.net>
Subject: [ 041/102] mac80211: fix ethtool stats for non-station interfaces

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

------------------

From: Johannes Berg <johannes@...solutions.net>

commit e13bae4f807401729b3f27c7e882a96b8b292809 upstream.

As reported in https://bugzilla.kernel.org/show_bug.cgi?id=60514,
the station loop never initialises 'sinfo' and therefore adds up
a stack values, leaking stack information (the number of times it
adds values is easily obtained another way.)

Fix this by initialising the sinfo for each station to add.

Signed-off-by: Johannes Berg <johannes@...solutions.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 net/mac80211/cfg.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -652,6 +652,8 @@ static void ieee80211_get_et_stats(struc
 			if (sta->sdata->dev != dev)
 				continue;
 
+			sinfo.filled = 0;
+			sta_set_sinfo(sta, &sinfo);
 			i = 0;
 			ADD_STA_STATS(sta);
 		}


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