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=1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,PDS_TONAME_EQ_TOLOCAL_SHORT, 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 C2A53CA9EB5 for ; Mon, 21 Oct 2019 09:59:09 +0000 (UTC) Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.kernel.org (Postfix) with SMTP id 115D120830 for ; Mon, 21 Oct 2019 09:59:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="N4ooVlfl" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 115D120830 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernel-hardening-return-17076-kernel-hardening=archiver.kernel.org@lists.openwall.com Received: (qmail 5543 invoked by uid 550); 21 Oct 2019 09:59:02 -0000 Mailing-List: contact kernel-hardening-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Received: (qmail 32370 invoked from network); 21 Oct 2019 08:39:49 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=FkZf1mfTenAZ5npBk4cn+CQbe3jHovWF76KrgyJLx8w=; b=N4ooVlfl4foXWzVkWo8gSeubv40tW0YIyHY3xEPdiwZPEYHvahXTxq+HtCJjGtbCs3 cQ4Qc3B9rsi+XX5vpjJHkCgf6lBYaIwE9hWgETGfISr4gFJTQ9D6/snqkZYmU7wsH0lZ Hmt7EK+mxcM3j4nAg7kB7jMbFekfupwTK4JacGRkicGNsbGrDoxws89ezq4TBsXQMSoA +18WygtUYupUsH8Cl4FJCzQ6Ax+qMV+NRH+gQV6+VONtX8D5Zj3iklxhgNbxy8BN7CGH V3Vx+gBHH97z+5Oiz8kIj2UxjRNd8jNkcKI45df5YazbjDuPccFg26h0nPSyOjgzDsqn knZg== 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=FkZf1mfTenAZ5npBk4cn+CQbe3jHovWF76KrgyJLx8w=; b=Ce1tB+GRUJvQ6yMDhRyKpKHFUF+7W4bg3B+ZcZOg/tcTVklSqAKeywDHNY7tD31arQ 4AFykR+QoQspAYlrGCegYVrlfOH7sTFY00PpO2THK71EGPQ8LdR0UHspAr2zTfwS3rAv MVaM2xK6ksS/YtcZIE4FBLsO7WjP46IQUvqixRK10O3FiEyl5ZSuGCklVytWNgKqzpI2 l3cN7BSaaRMmdHYK6yLkxsFgUVP2NQTXyn1QhDoUGZGthXuxjRAP+l0licmE1hb3tB8C 9/aFDgbpMgwbdcb2zuTc3JGQGeSAt5Ypcc8KoLgU4DyDuoxOAvpTqaobZHrAp97LQrA7 4yTA== X-Gm-Message-State: APjAAAU2rxfIFzQYoVfLn773hbCPdXmbEh1oUF3MseRvDt3NjNJ2r8aO aCGYbWwYzxcQMELP0/yzEk0DLCYgY/ee7O3AZfk= X-Google-Smtp-Source: APXvYqwNfXi6vPia0wYEhJoDqFDYarMj2Ho89gTHurkA9MgMItETpMuiOuhkUlvkHwv9/wEXXply+DCQQn7pbyTo2gE= X-Received: by 2002:aa7:8210:: with SMTP id k16mr21585016pfi.84.1571647177398; Mon, 21 Oct 2019 01:39:37 -0700 (PDT) MIME-Version: 1.0 References: <2e2a3d3c-872e-3d07-5585-92734a532ef2@gmail.com> In-Reply-To: <2e2a3d3c-872e-3d07-5585-92734a532ef2@gmail.com> From: Lukas Odzioba Date: Mon, 21 Oct 2019 10:39:26 +0200 Message-ID: Subject: Re: How to get the crash dump if system hangs? To: youling257 Cc: keescook@chromium.org, kernel-hardening@lists.openwall.com, munisekharrms@gmail.com Content-Type: text/plain; charset="UTF-8" youling257 wrote: > > I don't know my ramoops.mem_address, please help me. > > what is ramoops.mem_address? It is a Linux kernel parameter, see documentation below: https://www.kernel.org/doc/Documentation/admin-guide/ramoops.rst It requires memory which can hold data between reboots, so i'm not sure how it will suit your case. Thanks, Lukas