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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 02218C433E0 for ; Sat, 4 Jul 2020 20:29:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C765C221FB for ; Sat, 4 Jul 2020 20:29:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="r3r/TGwp" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727889AbgGDU30 (ORCPT ); Sat, 4 Jul 2020 16:29:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37122 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726895AbgGDU3Z (ORCPT ); Sat, 4 Jul 2020 16:29:25 -0400 Received: from mail-yb1-xb42.google.com (mail-yb1-xb42.google.com [IPv6:2607:f8b0:4864:20::b42]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E107DC061794 for ; Sat, 4 Jul 2020 13:29:24 -0700 (PDT) Received: by mail-yb1-xb42.google.com with SMTP id a30so1728731ybj.5 for ; Sat, 04 Jul 2020 13:29:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=PttaXRzdoubqrU8NlKxK6QuJqeqDE8bW+/y2ufbhArg=; b=r3r/TGwpS+s9RYGIkhWfW5qLqrVwZSiXbM2rmaroosXuECbCfhfp1EAOlW9CQDP+tq qMYMi61B9cMxAN6vVmrjCAxx4X8Tjl3uCuoFsJdIg7l9VGdVYeCKWhKDP8FHdY1C0S+i z5QfR1vsa4zq6aGsHhtHsIOfsed3eAw4kfuFfVjy2HnwdhGBLVQq72gbU3J8mTbuOqVJ T2ZPSr8mClKnnmobkDsyhMziLi0IgttGY7hR9NGuvtsARF0o/uazE/xU1PG+77STff76 /OtFcnEeeUnl7Fi4hEtuyrOz+0xmIssOAK1q8N4zJWxcnsQs86XTNoIoPr4eAlkGmM2A KebA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=PttaXRzdoubqrU8NlKxK6QuJqeqDE8bW+/y2ufbhArg=; b=bBSyUgTsQIPelu2HG8QVRfz1uXKzaDjLVkNRf8chJq6ZxwiG1a42Ky8gr2BKBFdBwF wHGZPdiiXqUH9QwqH/56m29yqLLYFxAFqbxad2iy5S0XkKARupcfEkk8c7cEoEzxzfQz nuu6PqvH624ugLKOTZERby8YpEOf88V/uhRwQ213x9PNjL1W/cK3RjYqfBRATTFWuEGz xSVsQDhLI/F/TmKuFcbZj0maKfaoEhe8Pwp8on61sAlK2zL+JFI36njQhynT9nhujre2 D4KicbvqU2jv4P43b79yYheRidwl2FJqBTxvIe+E4V6Ogj2BvLK7cYVUtELtrvIcLjC4 0Trw== X-Gm-Message-State: AOAM532czUIeecjLtZrKv9NfdNxvShZA6RiLaTPk0vKU6vn+SuBBN48O 2+/Rh/1X8p+UGwjBigSB9BTrS5dR727IcbHMDxMVro+hwbc= X-Google-Smtp-Source: ABdhPJwlfur/XyYcYgjKsUXAAOPAt0Zp9AKs1CjYvRDKEFFvSIT3Q9k13JpiJ9bgparJGJD/gYx6A0Nd98W/oDa5plQ= X-Received: by 2002:a25:23c7:: with SMTP id j190mr2855173ybj.167.1593894561632; Sat, 04 Jul 2020 13:29:21 -0700 (PDT) MIME-Version: 1.0 From: Steve French Date: Sat, 4 Jul 2020 15:29:11 -0500 Message-ID: Subject: 5.8-rc1 and later breaks chrome browser To: LKML Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org I noticed that chrome crashes immediately on startup on my desktop booting to 5.8-rc2 or later kernels (whether I build the kernel or using the prebuilt weekly Ubuntu mainline kernel downloads). Works fine with default kernels or 5.7 or 5.7.7 stable kernel etc. - just breaks if I boot 5.8-rc2 or later. I even tried building with today's mainline kernel and same thing. Any ideas how to work around this. Message logged to dmesg is: [ 131.366543] ThreadPoolServi[2526]: segfault at 415048 ip 00005652def3370d sp 00007fcdc3b37df0 error 6 in chrome[5652daa7e000+785b000] [ 131.366546] Code: Bad RIP value. -- Thanks, Steve