From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 300A5C5CFC0 for ; Mon, 18 Jun 2018 13:55:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A52342086A for ; Mon, 18 Jun 2018 13:55:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A52342086A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lxorguk.ukuu.org.uk Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754676AbeFRNzT (ORCPT ); Mon, 18 Jun 2018 09:55:19 -0400 Received: from www.llwyncelyn.cymru ([82.70.14.225]:33358 "EHLO fuzix.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754601AbeFRNzS (ORCPT ); Mon, 18 Jun 2018 09:55:18 -0400 Received: from alans-desktop (82-70-14-226.dsl.in-addr.zen.co.uk [82.70.14.226]) by fuzix.org (8.15.2/8.15.2) with ESMTP id w5IDsNpk007745; Mon, 18 Jun 2018 14:54:23 +0100 Date: Mon, 18 Jun 2018 14:54:22 +0100 From: Alan Cox To: Dmitry Vyukov Cc: "Theodore Y. Ts'o" , Linus Torvalds , Tetsuo Handa , Greg Kroah-Hartman , "Eric W. Biederman" , Guenter Roeck , Linux Kernel Mailing List , Andrew Morton , syzkaller , Stephen Rothwell , David Miller , Wu Fengguang Subject: Re: what trees/branches to test on syzbot Message-ID: <20180618145422.11b61298@alans-desktop> In-Reply-To: References: <873735n3dy.fsf@xmission.com> <20180116173440.GA15893@kroah.com> <81a0eb59-c204-9e36-13b7-88c2ea99ceab@I-love.SAKURA.ne.jp> <20180610015107.GC5020@thunk.org> <20180611012250.GD5020@thunk.org> Organization: Intel Corporation X-Mailer: Claws Mail 3.16.0 (GTK+ 2.24.32; x86_64-redhat-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > But forward bisection (when bug is fixed) unfortunately won't work > because these commits are not connected to HEAD. And forward bisection > is very important, otherwise who will bring order to all these > hundreds of open bugs? > https://syzkaller.appspot.com/ Bisection isn't so important when you are trying to close bugs that got fixed, with a note that it's no longer reproducable. It might mean the reproducer broke but it also stops you drowning and it tells a user that they might as well try the new one and see if still breaks thus collecting the information needed. True it's nice to know what commit may have magically fixed it but it's not essential. Further more once you see a bug is fixed even in -next you can later run the reproducer against an actual release to make sure it's still fixed there, and bisect between previous release and that release to find a mainline commit id if it's a single fix point. Alan