From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-Id: <20120504204230.424224741@linuxfoundation.org> Date: Fri, 04 May 2012 13:43:35 -0700 From: Greg KH To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Grazvydas Ignotas , "John W. Linville" Subject: [ 71/75] wl1251: fix crash on remove due to leftover work item In-Reply-To: <20120504204258.GA12552@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.3-stable review patch. If anyone has any objections, please let me know. ------------------ From: Grazvydas Ignotas commit 4c1bcdb5a3354b250b82a67549f57ac27a3bb85f upstream. This driver currently leaves elp_work behind when stopping, which occasionally results in data corruption because work function ends up accessing freed memory, typical symptoms of this are various worker_thread crashes. Fix it by cancelling elp_work. Signed-off-by: Grazvydas Ignotas Signed-off-by: John W. Linville Signed-off-by: Greg Kroah-Hartman --- drivers/net/wireless/wl1251/main.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/net/wireless/wl1251/main.c +++ b/drivers/net/wireless/wl1251/main.c @@ -479,6 +479,7 @@ static void wl1251_op_stop(struct ieee80 cancel_work_sync(&wl->irq_work); cancel_work_sync(&wl->tx_work); cancel_work_sync(&wl->filter_work); + cancel_delayed_work_sync(&wl->elp_work); mutex_lock(&wl->mutex);