Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757475Ab3CHMxv (ORCPT ); Fri, 8 Mar 2013 07:53:51 -0500 Received: from seldrel01.sonyericsson.com ([212.209.106.2]:16330 "EHLO seldrel01.sonyericsson.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757097Ab3CHMxt (ORCPT ); Fri, 8 Mar 2013 07:53:49 -0500 From: To: , CC: Greg Kroah-Hartman , Felipe Balbi , Truls Bengtsson , Radovan Lekanovic , Oskar Andero Subject: [RFC PATCH 0/1] usb: f_rndis: Avoid to use ERROR macro if cdev can be null Date: Fri, 8 Mar 2013 13:53:39 +0100 Message-ID: <1362747220-2204-1-git-send-email-oskar.andero@sonymobile.com> X-Mailer: git-send-email 1.7.8.6 MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1143 Lines: 35 Hi, When going through our patches to be mainlined I stumbled on this one which we have fixed in many different ways internally. The problem is a NULL pointer dereference that can be triggered by disconnecting the USB cable at a specific time. Before submitting the final patch I would like to hear which solution you'd prefer. As I see it there are four different ways to fix the problem: 1) Remove the ERROR() call completely. 2) Add an if-statement on cdev in rndis_response_complete() and use pr_err() or ERROR(). 3) Globally update the ERROR() macro to handle the case where cdev is null. 4) Use the attached patch (RFC PATCH 1/1) where ERROR() is simply replaced with pr_err(). Thanks! -Oskar Truls Bengtsson (1): usb: f_rndis: Avoid to use ERROR macro if cdev can be null drivers/usb/gadget/f_rndis.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) -- 1.7.8.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/