[ 3.5.y.z extended stable ] Patch "cfg80211: check wdev->netdev in connection work" has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    cfg80211: check wdev->netdev in connection work

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

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue

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
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From 3bc22f8e8f0874e6160b7e1432b113af909417e0 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg at intel.com>
Date: Thu, 23 May 2013 18:10:21 +0200
Subject: [PATCH] cfg80211: check wdev->netdev in connection work

commit c815797663b72e3ac1736f1886538152bc48e4af upstream.

If a P2P-Device is present and another virtual interface triggers
the connection work, the system crash because it tries to check
if the P2P-Device's netdev (which doesn't exist) is up. Skip any
wdevs that have no netdev to fix this.

Reported-by: YanBo <dreamfly281 at gmail.com>
Signed-off-by: Johannes Berg <johannes.berg at intel.com>
[ luis: backport to 3.5: adjust context ]
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 net/wireless/sme.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/wireless/sme.c b/net/wireless/sme.c
index f7e937f..3fd50a1 100644
--- a/net/wireless/sme.c
+++ b/net/wireless/sme.c
@@ -222,6 +222,9 @@ void cfg80211_conn_work(struct work_struct *work)
 	mutex_lock(&rdev->devlist_mtx);

 	list_for_each_entry(wdev, &rdev->netdev_list, list) {
+		if (!wdev->netdev)
+			continue;
+
 		wdev_lock(wdev);
 		if (!netif_running(wdev->netdev)) {
 			wdev_unlock(wdev);
--
1.8.1.2