Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755525AbYCUT6e (ORCPT ); Fri, 21 Mar 2008 15:58:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753420AbYCUT6Y (ORCPT ); Fri, 21 Mar 2008 15:58:24 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:37268 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753899AbYCUT6X (ORCPT ); Fri, 21 Mar 2008 15:58:23 -0400 Date: Fri, 21 Mar 2008 20:58:13 +0100 From: Ingo Molnar To: Valdis.Kletnieks@vt.edu Cc: Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: 2.6.25-rc3-mm1 - BUG at system shutdown time Message-ID: <20080321195813.GC16179@elte.hu> References: <20080304011928.e8c82c0c.akpm@linux-foundation.org> <10815.1204862325@turing-police.cc.vt.edu> <20080312003227.a94580e8.akpm@linux-foundation.org> <4351.1205374751@turing-police.cc.vt.edu> <20080321134128.GO27245@elte.hu> <3343.1206128318@turing-police.cc.vt.edu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3343.1206128318@turing-police.cc.vt.edu> User-Agent: Mutt/1.5.17 (2007-11-01) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1407 Lines: 29 * Valdis.Kletnieks@vt.edu wrote: > git-bisect good ad42b55d36238ebb9fa4d7a538ef691a76397c46 > # good: [56b412e63863ea82a5720315076c7dbd1d9888cd] x86: change x86 to use generic find_next_bit > git-bisect good 56b412e63863ea82a5720315076c7dbd1d9888cd > # good: [42de918f25dc9a49fb9688e22c2a3f2b156cc1bf] x86: prevent unconditional writes to DebugCtl MSR > git-bisect good 42de918f25dc9a49fb9688e22c2a3f2b156cc1bf > > At this point, 'git bisect visualize' shows 9 commits left to bisect > through, and all are dated 03/10 or later. However, since 25-rc3-mm1 > had the problem, it had to be something in-tree as of 03/05. > > Is it possible that the problem code was in the git-x86 tree when > Andrew pulled for -rc3-mm1 and -rc5-mm1, but had been reverted by the > time I grabbed the tree, so the /x86/base' was in fact *good* by that > point? no, we frequently regenerate the x86.git tree so the dates have little relevance. If for any particular pull, x86/base is good and x86/latest is bad, then the bug is somewhere in those 200-300 patches inbetween. They are lined up linearly so should be perfectly bisectable. Ingo -- 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/