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,USER_AGENT_SANE_2 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 48D0EC3815B for ; Mon, 20 Apr 2020 08:44:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2C78920A8B for ; Mon, 20 Apr 2020 08:44:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726473AbgDTIo4 (ORCPT ); Mon, 20 Apr 2020 04:44:56 -0400 Received: from mx2.suse.de ([195.135.220.15]:40388 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725773AbgDTIoz (ORCPT ); Mon, 20 Apr 2020 04:44:55 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 48CE1AB89; Mon, 20 Apr 2020 08:44:54 +0000 (UTC) Message-ID: <1587372294.26844.24.camel@suse.cz> Subject: Re: [Bisected] Oops witn 5.7.0-rc1 From: Giovanni Gherdovich To: Harald Arnesen , Linux Kernel Mailing List Date: Mon, 20 Apr 2020 10:44:54 +0200 In-Reply-To: <41ae3b90-8e14-9db5-a804-5fdb2eebac03@skogtun.org> References: <41ae3b90-8e14-9db5-a804-5fdb2eebac03@skogtun.org> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.26.6 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 2020-04-18 at 18:15 +0200, Harald Arnesen wrote: > Kernel 5.7.0-rc1 and later won't boot on my ThinkPad T510i. > > The attached jpeg is all I can capture of the oops. Bisected to commit > 1567c3e3467cddeb019a7b53ec632f834b6a9239, but I cannot revert that to check. > > A strange thing: The same commit is in 5.6.5, and that kernel boots > fine. 5.7.0-rc1 also boots fine on my desktop. > > Screenshot and config attached. Please request any further info. Hello Harald, thanks for the report. The problem you encountered is likely due to a bug where the code doesn't work on machines with less than 4 physical CPU cores. It is fixed by this patch series: https://lore.kernel.org/lkml/20200416054745.740-1-ggherdovich@suse.cz/ The series has been acknowledged by the subsystem maintainers but not yet merged in any tree (it is expected to land in the "tip" tree and then be pulled by Linus). Thanks, Giovanni Gherdovich