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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 88AC9C433E2 for ; Sat, 23 May 2020 17:30:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 69D6020679 for ; Sat, 23 May 2020 17:30:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388134AbgEWRa3 (ORCPT ); Sat, 23 May 2020 13:30:29 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:37450 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387501AbgEWRa2 (ORCPT ); Sat, 23 May 2020 13:30:28 -0400 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 49Tr3M1FsRz9v0rq; Sat, 23 May 2020 19:30:23 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [192.168.12.234]) (amavisd-new, port 10024) with ESMTP id 6AYhYT_9Gpsv; Sat, 23 May 2020 19:30:23 +0200 (CEST) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 49Tr3M0TyQz9v0rp; Sat, 23 May 2020 19:30:23 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 6DCA18B876; Sat, 23 May 2020 19:30:25 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id F9Ne9NoMRqYB; Sat, 23 May 2020 19:30:25 +0200 (CEST) Received: from [192.168.4.90] (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 1121E8B86D; Sat, 23 May 2020 19:30:25 +0200 (CEST) Subject: Re: Kernel bug in 5.7 for PPC32 on PowerBook G4 - bisected to commit 697ece7 To: Larry Finger Cc: Benjamin Herrenschmidt , Michael Ellerman , Paul Mackerras , ppc-dev , LKML References: <2c361d8e-5e2a-cdd9-da8e-aa49a4f93cfd@lwfinger.net> From: Christophe Leroy Message-ID: <3e3e2343-d674-02e0-7b23-81636b472641@csgroup.eu> Date: Sat, 23 May 2020 19:30:20 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <2c361d8e-5e2a-cdd9-da8e-aa49a4f93cfd@lwfinger.net> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: fr Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Larry, Le 23/05/2020 à 19:24, Larry Finger a écrit : > Hi Christophe, > > Although kernel 5.7.0-rc2 appeared to boot cleanly, it failed on my G4 > when I tried to generate a new kernel. The following BUG message is logged: > [...] > > This problem was bisected to commit 697ece7 ("powerpc/32s: reorder Linux > PTE bits to better match Hash PTE bits"). Being reversed in new -rc , see https://patchwork.ozlabs.org/project/linuxppc-dev/patch/87sgfsf4hs.fsf@mpe.ellerman.id.au/ > > If I had done more rigorous tests earlier, I would have found the bug > with more time to fix it before release of 5.7, but every other problem > I have found happened at boot, not when the machine had to swap. > > Thanks, > > Larry Christophe