Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752930AbcDVLVk (ORCPT ); Fri, 22 Apr 2016 07:21:40 -0400 Received: from mx2.suse.de ([195.135.220.15]:43971 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753419AbcDVLGR (ORCPT ); Fri, 22 Apr 2016 07:06:17 -0400 X-Amavis-Alert: BAD HEADER SECTION, Duplicate header field: "References" From: Jiri Slaby To: stable@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Oliver Neukum , Oliver Neukum , "David S . Miller" , Jiri Slaby Subject: [PATCH 3.12 22/78] usbnet: cleanup after bind() in probe() Date: Fri, 22 Apr 2016 13:05:05 +0200 Message-Id: <1f001b6a11b79a0518db5121abb0699b2d09ed6c.1461323133.git.jslaby@suse.cz> X-Mailer: git-send-email 2.8.1 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1323 Lines: 42 From: Oliver Neukum 3.12-stable review patch. If anyone has any objections, please let me know. =============== [ Upstream commit 1666984c8625b3db19a9abc298931d35ab7bc64b ] In case bind() works, but a later error forces bailing in probe() in error cases work and a timer may be scheduled. They must be killed. This fixes an error case related to the double free reported in http://www.spinics.net/lists/netdev/msg367669.html and needs to go on top of Linus' fix to cdc-ncm. Signed-off-by: Oliver Neukum Signed-off-by: David S. Miller Signed-off-by: Jiri Slaby --- drivers/net/usb/usbnet.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c index 3b7b7b2eba1b..4abd4579ba0c 100644 --- a/drivers/net/usb/usbnet.c +++ b/drivers/net/usb/usbnet.c @@ -1719,6 +1719,13 @@ out3: if (info->unbind) info->unbind (dev, udev); out1: + /* subdrivers must undo all they did in bind() if they + * fail it, but we may fail later and a deferred kevent + * may trigger an error resubmitting itself and, worse, + * schedule a timer. So we kill it all just in case. + */ + cancel_work_sync(&dev->kevent); + del_timer_sync(&dev->delay); free_netdev(net); out: return status; -- 2.8.1