Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752471AbdFUVXG (ORCPT ); Wed, 21 Jun 2017 17:23:06 -0400 Received: from zeniv.linux.org.uk ([195.92.253.2]:56822 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751901AbdFUVXE (ORCPT ); Wed, 21 Jun 2017 17:23:04 -0400 Date: Wed, 21 Jun 2017 22:22:57 +0100 From: Al Viro To: Larry Finger Cc: LKML , Thorsten Leemhuis Subject: Re: Regression in kernel 4.12-rc1 for Powerpc 32 - bisected to commit 3448890c32c3 Message-ID: <20170621212257.GN10672@ZenIV.linux.org.uk> References: <69187aa4-611f-b08a-8d14-b8fa47b4c464@lwfinger.net> <1588557c-2706-0c0e-3387-4ae65d0b5790@lwfinger.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1588557c-2706-0c0e-3387-4ae65d0b5790@lwfinger.net> User-Agent: Mutt/1.8.0 (2017-02-23) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 515 Lines: 11 On Wed, Jun 21, 2017 at 10:10:57AM -0500, Larry Finger wrote: > I finally finished the bisection by patching each commit that was affected > by the bootstrap crash. The faulty change is commit > 3448890c32c32c482c3ec20baa8fdd2ab4f94cc0 ("powerpc: get rid of zeroing, > switch to RAW_COPY_USER"). I am very confident in the bisection. > > As I know nothing of assembly for ppc32, I have not been able to attempt to > find the problem with these patches. How about the .config that works on parent of that commit?