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=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 2D113C34022 for ; Mon, 17 Feb 2020 20:24:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E5E782067D for ; Mon, 17 Feb 2020 20:24:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581971048; bh=NUHHfMZJxlHqOe7gWpimhNZc2cAnfVaHki6BZLBJuc4=; h=References:In-Reply-To:From:Date:Subject:To:Cc:List-ID:From; b=hVIr5ee74wbXy04UgtqL+3V983Jt3DsKUXTPPMBvDIwo4KmjMPYwdBWL2E0kNtPnD JGqmfhJtp+bcDx/OWqU6ATvv7TC2Z0BmLvwwSD/Pis3S+H2m2gtZVDsfLhpilrFGau /UYu1DEEVeXYqObPrZ6aK0xYwuI9w1zeBurwf2wM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729041AbgBQUYH (ORCPT ); Mon, 17 Feb 2020 15:24:07 -0500 Received: from mail-ot1-f68.google.com ([209.85.210.68]:42135 "EHLO mail-ot1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727300AbgBQUYH (ORCPT ); Mon, 17 Feb 2020 15:24:07 -0500 Received: by mail-ot1-f68.google.com with SMTP id 66so17328386otd.9 for ; Mon, 17 Feb 2020 12:24:06 -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=akysGxdKhK3MYsMhEZi1oop0cwtFYm4rxc0Zw7OEjBs=; b=jhoS/6AVWc2VYaUndWOMyXK9frtkMXXGW8Tow9el7tQpmOtpzzMZoFJoap/v9PJ4on b3sdju5PZRyIcrBPWnEszhgWd6vUa11A6yhBwz3sG2bwvk5xahYJbi0dxZw/bgyzUlME 5HkbsJGEBeXa1ky5osXV70Thm7olVxY/GZHRVy/5td9MdFcn4bPKNbXP3f68gmoua0Db P5TVrGcX/RiSASMMJUorGdvks7KEfjTHMKJt+S4+Q6moTVdNO2gdMMwDC/Rt5qVKvsP9 2EfUH6jsnttXPz9wD0RfrEDDKDgrS5xzqQQSMGbTaZykbBi34oSHShmPj3NiwBriepxV D+AQ== X-Gm-Message-State: APjAAAVjY71mN/Zc+MUPDnA+1BnuCNz08GBf9/agD5MshfD4q3T4zMlP eNmz7t4mbzf3yDtecz/qVdnxBKbX0QZ4W12NK04= X-Google-Smtp-Source: APXvYqzbYnQ6BX3cPDGz0UfkI6gdrjr79lNPgymVxAU7DhHRo5Ad2p8k5EHzKawd8hF2sI/xJCq9PGT6mWYu5PbWyV8= X-Received: by 2002:a9d:67d7:: with SMTP id c23mr13463986otn.262.1581971046393; Mon, 17 Feb 2020 12:24:06 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: "Rafael J. Wysocki" Date: Mon, 17 Feb 2020 21:23:55 +0100 Message-ID: Subject: Re: Linux hangs at ACPI init on Medion P15648 MD63490 To: Jan Engelhardt , Erik Kaneda , Robert Moore Cc: "Rafael J. Wysocki" , ACPI Devel Maling List Content-Type: text/plain; charset="UTF-8" Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org On Mon, Feb 17, 2020 at 1:10 AM Jan Engelhardt wrote: > > > On Sunday 2020-02-16 21:49, Rafael J. Wysocki wrote: > > >> I thus went back to 5.6-rc and enabled full ACPI tracing > >> (layer=0xffffffff/level=0xffffffff) starting from > >> > >> nsinit.c:213 /* Walk namespace to execute all _INIs on present devices */ > >> > >> onwards. That log output is at http://inai.de/files/m923.mp4 [53MB]. > > > >If that is the case, then AFAICS the issue may not be directly related > >to the EC at all. This output only means that the system has an ECDT, > >but that should not be a problem by itself. > > > >The system appears to hang somewhere in acpi_ns_initialize_devices() > >and it is hard to say where exactly. > > I had an exact stack trace. (Stashed in all those videos - now extracted and > posted to the bug) > > >I would suggest creating a BZ entry at bugzilla.kernel.org for this > >issue and attaching the output of acpidump from the affected system in > >there. > > https://bugzilla.kernel.org/show_bug.cgi?id=206553 Erik, Bob, can you please have a look at this BZ? It looks like there is a deadlock on the global lock while processing some AML during acpi_ns_initialize_devices() execution.