From mboxrd@z Thu Jan 1 00:00:00 1970 From: "=?ISO-8859-1?Q?Ilpo_J=E4rvinen?=" Subject: Re: Reporting bugs and bisection Date: Mon, 14 Apr 2008 22:30:55 +0300 (EEST) Message-ID: References: <47FEADCB.7070104@rtr.ca> <20080413121831.d89dd424.akpm@linux-foundation.org> <20080413202118.GA29658@2ka.mipt.ru> <200804132233.50491.rjw@sisk.pl> <20080413205406.GA9190@2ka.mipt.ru> <48028830.6020703@earthlink.net> <20080414043939.GA6862@1wt.eu> <20080414053943.GU9785@ZenIV.linux.org.uk> <20080413232441.e216a02c.akpm@linux-foundation.org> <20080414072328.GW9785@ZenIV.linux.org.uk> <20080414010412.c42dc560.akpm@linux-foundation.org> <20080414074349.24fa90f8@laptopd505.fenrus.org> <20080414105152.9cc06fab.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: Al Viro , Willy Tarreau , david@lang.hm, Stephen Clark , Evgeniy Polyakov , "Rafael J. Wysocki" , Tilman Schmidt , Valdis.Kletnieks@vt.edu, Mark Lord , David Miller , jesper.juhl@gmail.com, yoshfuji@linux-ipv6.org, Jeff Garzik , linux-kernel , git@vger.kernel.org, Netdev To: Andrew Morton , Arjan van de Ven X-From: git-owner@vger.kernel.org Mon Apr 14 21:31:59 2008 connect(): Connection refused Return-path: Envelope-to: gcvg-git-2@gmane.org Received: from vger.kernel.org ([209.132.176.167]) by lo.gmane.org with esmtp (Exim 4.50) id 1JlUP6-00076q-6L for gcvg-git-2@gmane.org; Mon, 14 Apr 2008 21:31:48 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762443AbYDNTbA (ORCPT ); Mon, 14 Apr 2008 15:31:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760971AbYDNTa6 (ORCPT ); Mon, 14 Apr 2008 15:30:58 -0400 Received: from courier.cs.helsinki.fi ([128.214.9.1]:40044 "EHLO mail.cs.helsinki.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753480AbYDNTa5 (ORCPT ); Mon, 14 Apr 2008 15:30:57 -0400 Received: from wrl-59.cs.helsinki.fi (wrl-59.cs.helsinki.fi [128.214.166.179]) (AUTH: PLAIN cs-relay, TLS: TLSv1/SSLv3,256bits,AES256-SHA) by mail.cs.helsinki.fi with esmtp; Mon, 14 Apr 2008 22:30:55 +0300 id 00067D99.4803B0EF.00000A86 Received: by wrl-59.cs.helsinki.fi (Postfix, from userid 50795) id B7FCC16B164; Mon, 14 Apr 2008 22:30:55 +0300 (EEST) Received: from localhost (localhost [127.0.0.1]) by wrl-59.cs.helsinki.fi (Postfix) with ESMTP id B561C16B5B9; Mon, 14 Apr 2008 22:30:55 +0300 (EEST) X-X-Sender: ijjarvin@wrl-59.cs.helsinki.fi In-Reply-To: <20080414105152.9cc06fab.akpm@linux-foundation.org> Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Archived-At: On Mon, 14 Apr 2008, Andrew Morton wrote: > On Mon, 14 Apr 2008 07:43:49 -0700 Arjan van de Ven wrote: > > > I'll be writing a report with more details about this soon with more analysis and statistics > > (I'll be looking at more detail around the top 25 issues, when they got introduced, when they got fixed etc) > > Well OK. But I don't think we can generalise from oops-causing bugs all > the way to all bugs. Very few bugs actually cause oopses, and oopses tend > to be the thing which developers will zoom in on and pay attention to. > > If we had metrics on "time goes backwards" or anything containing "ASUS", > things might be different. Even oopses have pitfalls, like in 25-rcs where those WARN_ON TCP backtraces were due to three different bugs (there might be fourth one still remaining). ...kerneloops.org didn't even make difference between different WARN_ONs in a function though that would have helped only little in the case of 25-rc TCP because of different bugs causing failures in the same invariant. -- i.