From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Morton Subject: git-bisect failure Date: Fri, 9 Sep 2005 01:10:34 -0700 Message-ID: <20050909011034.12f2bf64.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-From: git-owner@vger.kernel.org Fri Sep 09 10:12:36 2005 Return-path: Received: from vger.kernel.org ([209.132.176.167]) by ciao.gmane.org with esmtp (Exim 4.43) id 1EDdyS-0001IH-3W for gcvg-git@gmane.org; Fri, 09 Sep 2005 10:11:04 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964945AbVIIIK7 (ORCPT ); Fri, 9 Sep 2005 04:10:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965024AbVIIIK7 (ORCPT ); Fri, 9 Sep 2005 04:10:59 -0400 Received: from smtp.osdl.org ([65.172.181.4]:20948 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S964945AbVIIIK6 (ORCPT ); Fri, 9 Sep 2005 04:10:58 -0400 Received: from shell0.pdx.osdl.net (fw.osdl.org [65.172.181.6]) by smtp.osdl.org (8.12.8/8.12.8) with ESMTP id j898AvBo025058 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=NO) for ; Fri, 9 Sep 2005 01:10:58 -0700 Received: from bix (shell0.pdx.osdl.net [10.9.0.31]) by shell0.pdx.osdl.net (8.13.1/8.11.6) with SMTP id j898AvhP003128 for ; Fri, 9 Sep 2005 01:10:57 -0700 To: git@vger.kernel.org X-Mailer: Sylpheed version 1.0.4 (GTK+ 1.2.10; i386-redhat-linux-gnu) X-Spam-Status: No, hits=0 required=5 tests= X-Spam-Checker-Version: SpamAssassin 2.63-osdl_revision__1.45__ X-MIMEDefang-Filter: osdl$Revision: 1.115 $ X-Scanned-By: MIMEDefang 2.36 Sender: git-owner@vger.kernel.org Precedence: bulk X-Mailing-List: git@vger.kernel.org Archived-At: Using git-core-0.99.6 I tried to locate a bug using git's bisection searching. It gave the wrong answer. It ended up claiming the bug was in tree ea7b1763aa0e0d36b52fa245449c79338fe735b3 parent e9f86e351fda5b3c40192fc3990453613f160779 author Zachary Amsden Sun, 04 Sep 2005 05:56:47 -0700 committer Linus Torvalds Mon, 05 Sep 2005 14:06:13 -0700 [PATCH] x86: introduce a write acessor for updating the current LDT Whereas the bug was really in tree 090c471fdb44d8fe88c52e95be0e8e43e31fcd5a parent d7271b14b2e9e5905aba0fbf5c4dc4f8980c0cb2 author Zwane Mwaikambo Sun, 04 Sep 2005 05:56:51 -0700 committer Linus Torvalds Mon, 05 Sep 2005 14:06:13 -0700 [PATCH] i386 boottime for_each_cpu broken Which is off-by-two, iirc. Exact sequence: bix:/usr/src/git26> git bisect start bix:/usr/src/git26> git bisect good 02b3e4e2d71b6058ec11cc01c72ac651eb3ded2b bix:/usr/src/git26> git bisect bad 4e1491847ef5ca1c5a661601d5f96dcb7d90d2f0 Bisecting: 901 revisions left to test after this bix:/usr/src/git26> git bisect good Bisecting: 451 revisions left to test after this bix:/usr/src/git26> git bisect bad Bisecting: 219 revisions left to test after this bix:/usr/src/git26> git bisect bad Bisecting: 110 revisions left to test after this bix:/usr/src/git26> git bisect bad Bisecting: 55 revisions left to test after this bix:/usr/src/git26> git bisect bad Bisecting: 28 revisions left to test after this bix:/usr/src/git26> git bisect good Bisecting: 14 revisions left to test after this bix:/usr/src/git26> git bisect good Bisecting: 7 revisions left to test after this bix:/usr/src/git26> git bisect good Bisecting: 3 revisions left to test after this bix:/usr/src/git26> git bisect bad Bisecting: 2 revisions left to test after this bix:/usr/src/git26> git bisect good f2f30ebca6c0c95e987cb9a1fd1495770a75432e is first bad commit diff-tree f2f30ebca6c0c95e987cb9a1fd1495770a75432e (from e9f86e351fda5b3c40192fc3990453613f160779) Author: Zachary Amsden Date: Sat Sep 3 15:56:47 2005 -0700 [PATCH] x86: introduce a write acessor for updating the current LDT I don't think I screwed anything up.