From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, YanBo , Johannes Berg , Ben Hutchings , Qiang Huang Subject: [PATCH 3.4 201/214] cfg80211: check wdev->netdev in connection work Date: Wed, 4 Jun 2014 21:19:24 -0700 Message-Id: <20140605041706.467767106@linuxfoundation.org> In-Reply-To: <20140605041639.638675216@linuxfoundation.org> References: <20140605041639.638675216@linuxfoundation.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Johannes Berg 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 Signed-off-by: Johannes Berg [bwh: Backported to 3.2: adjust context] Signed-off-by: Ben Hutchings Cc: Qiang Huang Signed-off-by: Greg Kroah-Hartman --- net/wireless/sme.c | 3 +++ 1 file changed, 3 insertions(+) --- a/net/wireless/sme.c +++ b/net/wireless/sme.c @@ -222,6 +222,9 @@ void cfg80211_conn_work(struct work_stru 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);