Received: by 2002:a05:6a10:f347:0:0:0:0 with SMTP id d7csp1158437pxu; Fri, 27 Nov 2020 00:46:17 -0800 (PST) X-Google-Smtp-Source: ABdhPJyneXTW7E0pTGzuo51WEBfMEc2HEBH5LR4cLxaszkm5TrHlCAEbseJLBbQfGdB7BEP//odm X-Received: by 2002:a17:906:6947:: with SMTP id c7mr6578005ejs.512.1606466776883; Fri, 27 Nov 2020 00:46:16 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1606466776; cv=none; d=google.com; s=arc-20160816; b=0pwmRYJ+8zbjxszdci+9jhXFLf2cbuucOzMNaVlbiQH0sXkqUEmFNt7GEcXwgB+1qT eGWib9UExMJ3+J0eZIJK8kzM0fa9Luzmi5EPLT+mA94DGy/sussn1hZO+8FqnKUYo+HJ arfwwsrrZV6Fzytt/uVTz3siO9Rvy9Bg29MSsEH99zAGkeNjZUwBclvOprUK/vHJv5Xk 6sPqgVk40y0Ke37JCYFOA90g5QDcM100VmQEnUi9t4S1BQhP10WM/+vnFvB0WzuHpM9C DwSlX2aSfF2YsMWcr2GMBPv/fxktSCay8ZRIL1XOBpSLqh4v9sg3n8CMjq2oPpBXGn/E a6PQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:cc:to:subject:message-id:date:from:in-reply-to :references:mime-version; bh=9lRXUB1qEmss2IMoGdczKcPmeRHUynmNqZ/JpkKoX7s=; b=wqjhozHq/1SgWdwQL/2FMT2jyivvYi2NZHyC5texAXAO5NAgJ73x70+nkxq8Y71TG/ y6vnUpdtOPv1gLB4vR7RR0MmUmWyeZx55wKEGf/wBF/fJmWt9hr1lqmRScfZK/EYnjPw di0H1d0FBdM5mcsDuIS1In3bPtTUIbQ8lX6RYAQV1zgWb8w/kQcjB2xEkxOBh138M/gH k30YKyZsnC7P1juwiqo660Opx0yS43pyLJ5qQq/hpzHOSdo1jl7X8kR+dnXdBl1a6b9/ w39ph+gPFqlaYK/S0dOQ10BfqUgN2PWC/k4UOlbueRzsGcrWFQw7QykK0ewAzRoz7DQw jmOw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=canonical.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id mb20si4591644ejb.673.2020.11.27.00.45.54; Fri, 27 Nov 2020 00:46:16 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=canonical.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391732AbgKZWV2 (ORCPT + 99 others); Thu, 26 Nov 2020 17:21:28 -0500 Received: from youngberry.canonical.com ([91.189.89.112]:57194 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387820AbgKZWV2 (ORCPT ); Thu, 26 Nov 2020 17:21:28 -0500 Received: from mail-ed1-f69.google.com ([209.85.208.69]) by youngberry.canonical.com with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1kiPdm-00057f-AY for linux-kernel@vger.kernel.org; Thu, 26 Nov 2020 22:21:26 +0000 Received: by mail-ed1-f69.google.com with SMTP id g25so1646073edu.21 for ; Thu, 26 Nov 2020 14:21:26 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=9lRXUB1qEmss2IMoGdczKcPmeRHUynmNqZ/JpkKoX7s=; b=LOIpBCC87caZNDeM+LhjxPIS1lkfgAUQPXdMD+4ywmH3GjoD3cwucoV8qYB1YVpFQP LgLADYUOvGSVkj/NDygVu5pYsuaqmBUj6j8sl20o3TBJmw30pu0AqVOHz3fFOjBy8Bxa jPnAmyKnp2txCPZZhGrrbGO6jRSUj3J/LXg5LTHexiOghD+WJQoC4G96o/XSKH33MwJ1 f7MhGhTPkmt3EeoIO2z42+/W1tdriaqX8l2vKxJTWvktNDFanH5jZvMROzpuFtMVjl1l 6c/vckACwWsBVd4DIyMVYyaIgbGEcOmt8gwcwaTqPlotLB9oxyZYq6IPp53JImPSt5wZ ecUA== X-Gm-Message-State: AOAM530xboJWOoPCwDjI7W+NbNwia+HKtKT2wAtjIaj25R19DilakvOF eSmEi0IeNaYJgsk0KLOSG1T+DjcgYtrWIh3LKC6FLCGtgQ+IipmOlODZLn0DYv591FM1z+DYdVN 0/TfGmCh/xrZ8hA+3rqrVRoH3yHDlRYg1pbFpIkwvGPbDi0lmmeqncZBfcA== X-Received: by 2002:a05:6402:114c:: with SMTP id g12mr4422721edw.167.1606429285934; Thu, 26 Nov 2020 14:21:25 -0800 (PST) X-Received: by 2002:a05:6402:114c:: with SMTP id g12mr4422713edw.167.1606429285753; Thu, 26 Nov 2020 14:21:25 -0800 (PST) MIME-Version: 1.0 References: <72df55ca-20f3-c3ee-861b-c50c1a55495e@canonical.com> In-Reply-To: <72df55ca-20f3-c3ee-861b-c50c1a55495e@canonical.com> From: Guilherme Piccoli Date: Thu, 26 Nov 2020 19:20:49 -0300 Message-ID: Subject: Re: About ftrace+pstore+ramoops To: anton@enomsg.org, joel@joelfernandes.org Cc: Kees Cook , ccross@android.com, tony.luck@intel.com, Steven Rostedt , Ingo Molnar , linux-kernel , u.kleine-koenig@pengutronix.de Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Just a heads-up on top of my own email: as soon as I sent the email, I had an idea. I was trying with ramoops.ftrace_size=X, so I removed this parameter and it worked. As expected, it's a small buffer so collected mostly the ramoops own functions, but worked in the end - I'll debug the reason it failed with ftrace_size. Apologies for the inconvenience! Cheers, Guilherme