The patch "cfg80211: check radar interface combinations" would dereference chan even though this may be NULL. Fix a page fault when adding a new interface by adding a short-circuit check for NULL. Signed-off-by: Thomas Pedersen <thomas@xxxxxxxxxxx> --- No action required for this to make it into 3.8, right? net/wireless/util.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/wireless/util.c b/net/wireless/util.c index 1c2795d..d1decbc 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -1212,7 +1212,8 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev, case NL80211_IFTYPE_MESH_POINT: case NL80211_IFTYPE_P2P_GO: case NL80211_IFTYPE_WDS: - radar_required = !!(chan->flags & IEEE80211_CHAN_RADAR); + radar_required = !!(chan && + chan->flags & IEEE80211_CHAN_RADAR); break; case NL80211_IFTYPE_P2P_CLIENT: case NL80211_IFTYPE_STATION: -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
