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=-7.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,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 0C969C433E2 for ; Fri, 11 Sep 2020 15:48:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C794620758 for ; Fri, 11 Sep 2020 15:48:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726506AbgIKPsk (ORCPT ); Fri, 11 Sep 2020 11:48:40 -0400 Received: from mx2.cyber.ee ([193.40.6.72]:41459 "EHLO mx2.cyber.ee" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726548AbgIKPnk (ORCPT ); Fri, 11 Sep 2020 11:43:40 -0400 Subject: Re: gcc crashes with general protection faults in 5.9.0-rc3-00091-ge28f0104343d From: Meelis Roos To: LKML References: <9883f24e-7ea4-ffe1-e284-8583a3407c94@linux.ee> <70778c21-8039-5011-e885-221c2cb06220@linux.ee> Message-ID: <95c6539f-1c32-5caa-ce0f-e4a5e9859c56@linux.ee> Date: Fri, 11 Sep 2020 16:44:57 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: <70778c21-8039-5011-e885-221c2cb06220@linux.ee> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Replying to myself: >> This is 5.9.0-rc3-00091-ge28f0104343d on Lenovo t460s that has ran fine up to 5.8.0. > > Now I reproduced the same problem with 5.9.0-rc3 on a HP desktop with Core2Quad CPU. The call trace is very similar and it's crashing gcc again while compiling 5.9-rc4. > > But it seems 5.9-rc4 cures it here as well - whatever the reason might have been. Nope, the reason was nondeterminism - it happened on the Core2Quad running 5.9-rc4 while trying to compile todays Linux from git. -- Meelis Roos