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=-2.1 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, 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 A73ADC35249 for ; Wed, 5 Feb 2020 06:36:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 79DF42082E for ; Wed, 5 Feb 2020 06:36:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="aSEFDeWl" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726661AbgBEGgn (ORCPT ); Wed, 5 Feb 2020 01:36:43 -0500 Received: from mail-pj1-f65.google.com ([209.85.216.65]:53090 "EHLO mail-pj1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725468AbgBEGgn (ORCPT ); Wed, 5 Feb 2020 01:36:43 -0500 Received: by mail-pj1-f65.google.com with SMTP id ep11so539825pjb.2 for ; Tue, 04 Feb 2020 22:36:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=NR5HHqY14nVKiwN1pnGOCIaNnlF4MJl1CZSdtbVmuTk=; b=aSEFDeWldjG7yFrvO1YqEPyjmp+WjO9Y1I/fRf1tF8L1//bP8rbNOx542hjgvyowZI CJTeFWOLyxLIV/k2cRV3Ln7wCL8kXkqHoejpHlrAqfMzhbdfxbqBUePxgYmOLeZsf6q4 U5Rd7t7jot8QcZ/9SsBgDC10uZfEvwz4eriiIXuosVy0Fi4Ljqhr0oNfjTlVKkEB8JXX MOjIgJqmNAGXdmg0AYR+Biamoehpfz8JYeEe32HFRsCl/uBWLxNq5NQKW0ki9YjnwYIx sYuObbHtIaewfpxSU3hzyyPtKPFWMZYihtWHZHRAXrAAKM6+yvROtDfzEM1CWZL+sa1h Rpfg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=NR5HHqY14nVKiwN1pnGOCIaNnlF4MJl1CZSdtbVmuTk=; b=EkepaFLdnVBhqablKoqB17OKw9fHojKBBnXdjUefCBl5yjukVFbFmBAVzp1fO+sZZD pCFSZK2iIqg7kxd5ExTroDwBaZCf/ehTIKK7feaASa5gYs7C1p79vbQqttUiyNCFc99u YubUnormE+lE0vLqPb3/vl5DVMjHKL4HArcn0u+ukzqe4UvioAUxzYnIB06OqZR7cTk0 9CVYqyXeOwJEQJ8a/mxgV7f1tsFvbDtxQWGMrsnfql4ea6uPSrqyRjOL/SkjCC6yvETa RLraQGBwvoONSN1ZzAhMbkipqh9a0iGPikOvz8N2FbI6WP0jcVxm8HeJdc06I0VuQ77U GeYQ== X-Gm-Message-State: APjAAAULRdeXy7QMB86UFfGqISMuYqBaq8qzWGdyVBb6L0YlBEf8XErp KcYDBlL4OHwnXAFhCGcwbSg= X-Google-Smtp-Source: APXvYqx+puy+6sb4HFx3KAsl7TfpxjwMo113X6yG3BHkUMt1zGTj2Zqfz0NX9sVKRKwlTQJsjYsYcg== X-Received: by 2002:a17:90a:6:: with SMTP id 6mr3971648pja.71.1580884602719; Tue, 04 Feb 2020 22:36:42 -0800 (PST) Received: from localhost ([2401:fa00:8f:203:5bbb:c872:f2b1:f53b]) by smtp.gmail.com with ESMTPSA id 196sm27200499pfy.86.2020.02.04.22.36.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Feb 2020 22:36:41 -0800 (PST) Date: Wed, 5 Feb 2020 15:36:40 +0900 From: Sergey Senozhatsky To: lijiang , John Ogness Cc: Sergey Senozhatsky , Petr Mladek , Peter Zijlstra , Sergey Senozhatsky , Steven Rostedt , Linus Torvalds , Greg Kroah-Hartman , Andrea Parri , Thomas Gleixner , kexec@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/2] printk: replace ringbuffer Message-ID: <20200205063640.GJ41358@google.com> References: <20200128161948.8524-1-john.ogness@linutronix.de> <20200205044848.GH41358@google.com> <20200205050204.GI41358@google.com> <88827ae2-7af5-347b-29fb-cffb94350f8f@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <88827ae2-7af5-347b-29fb-cffb94350f8f@redhat.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On (20/02/05 13:38), lijiang wrote: > > On (20/02/05 13:48), Sergey Senozhatsky wrote: > >> On (20/02/05 12:25), lijiang wrote: [..] > >> > >> So there is a General protection fault. That's the type of a problem that > >> kills the boot for me as well (different backtrace, tho). > > > > Do you have CONFIG_RELOCATABLE and CONFIG_RANDOMIZE_BASE (KASLR) enabled? > > > > Yes. These two options are enabled. > > CONFIG_RELOCATABLE=y > CONFIG_RANDOMIZE_BASE=y So KASLR kills the boot for me. So does KASAN. John, do you see any of these problems on your test machine? -ss