Commit c8157976 authored May 23, 2013 by Johannes Berg

cfg80211: check wdev->netdev in connection work



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.

Cc: stable@vger.kernel.org
Reported-by: YanBo <dreamfly281@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

parent 6211dd12

net/wireless/sme.c

+3 −0

Original line number	Original line	Diff line number	Diff line
	@@ -231,6 +231,9 @@ void cfg80211_conn_work(struct work_struct *work)
	mutex_lock(&rdev->sched_scan_mtx);		mutex_lock(&rdev->sched_scan_mtx);

	list_for_each_entry(wdev, &rdev->wdev_list, list) {		list_for_each_entry(wdev, &rdev->wdev_list, list) {
			if (!wdev->netdev)
			continue;

	wdev_lock(wdev);		wdev_lock(wdev);
	if (!netif_running(wdev->netdev)) {		if (!netif_running(wdev->netdev)) {
	wdev_unlock(wdev);		wdev_unlock(wdev);