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,HEADER_FROM_DIFFERENT_DOMAINS,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 E2698C432C3 for ; Fri, 15 Nov 2019 08:58:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BA64F2073A for ; Fri, 15 Nov 2019 08:58:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="UTHgI7il" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727316AbfKOI65 (ORCPT ); Fri, 15 Nov 2019 03:58:57 -0500 Received: from mail-lj1-f194.google.com ([209.85.208.194]:41897 "EHLO mail-lj1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727276AbfKOI65 (ORCPT ); Fri, 15 Nov 2019 03:58:57 -0500 Received: by mail-lj1-f194.google.com with SMTP id m4so4906935ljj.8 for ; Fri, 15 Nov 2019 00:58:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=Z+pg9wj7yRXgLDbaXk97MrdYcFuUJiaocpSFiWUQa1o=; b=UTHgI7il6nkwPJ5t8b7FMh0XJmESz0IGK7rLutWB2vw6I0WyJlHZc5HzSJe9OJO/Ja cy90XKj0jyihqQIuf3/Ck0cF/JNi8a+GasJC5mVdphNQ7QLH8qwoPiyf5YOLM25O8vUE e8HS4mV64/idioykbqun7VK9SHxe/G39ajtZOMaPkNT4mZiM3aHLURCdjKP3qGnV9YAF qZfzHyhsp1iwHI3ganjVtmXZ/Z8kRYHYojIyVFx6IdWBhExFxC+EmY3F7bcGcsbuVv1A 3GVwJ9NAqejEzjvYAnJylfaw7p8QaRTdtXztlHIoB5j4SiHJJMjpmlprWqNwfzWFc3or IsUA== 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=Z+pg9wj7yRXgLDbaXk97MrdYcFuUJiaocpSFiWUQa1o=; b=L4lqkBFXHtQvqPAr6jxPB/8XCk31/fy4NR/gWQMCq/COpUNb5i93pqG+e7OwRNZm0q 7AwJCmau4zJx1EUNYUZn5M8Iff+NGgQKeyOpWM+uPQUXdGisVOhyWbM8tlww15moHXH6 cCxSKKhWm5x5O7PHX+H8AGTOaUUbCPH55YE5hDgMvDvnF8DWyS4A+DaN6hdziKaffBNY nKvJ7DoTH/RNp1QojLh3Fpn8jJnfoEYYu+Fe9JqdnbAhhLJgJjHK/RaGX2iaovpF7AEi a0eMmJCS0aHBEZEV2ISvT8Wu98lXqvzsGhN27ZyF8u2vyuol1ni8F2MT3/cdfMAVPvIR UAVA== X-Gm-Message-State: APjAAAU8ar7TnSUyJ8PDs8KjtxLOkJ5jcUwqIUYdxkQOwis5FtWBUxTY +j1ZJdS3sFdj1qnneK3WZ4lPeP+Xx+8keG5b+7aBKA== X-Google-Smtp-Source: APXvYqwIDdyPqvILxslSpTDagXqgZxcyneXp6w20bE5evFxcLeT7zIkuP+8wNFzYA/MQKGJ1IfoewtfpTYYk4NobWk0= X-Received: by 2002:a2e:888a:: with SMTP id k10mr10290408lji.195.1573808334796; Fri, 15 Nov 2019 00:58:54 -0800 (PST) MIME-Version: 1.0 References: <20191114224213.GN4163745@devbig004.ftw2.facebook.com> In-Reply-To: <20191114224213.GN4163745@devbig004.ftw2.facebook.com> From: Naresh Kamboju Date: Fri, 15 Nov 2019 14:28:43 +0530 Message-ID: Subject: Re: linux-next: arm32: beagleboard x15: WARNING: CPU: 0 PID: 0 at /usr/src/kernel/kernel/cgroup/cgroup.c:1969 cgroup_setup_root+0x36c/0x4e8 To: Tejun Heo Cc: cgroups@vger.kernel.org, Linux-Next Mailing List , namhyung@kernel.org, open list , lkft-triage@lists.linaro.org, lizefan@huawei.com, hannes@cmpxchg.org, Alexei Starovoitov , Daniel Borkmann , kafai@fb.com, Song Liu 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 Hi Tejun, On Fri, 15 Nov 2019 at 04:12, Tejun Heo wrote: > > [ 0.015402] WARNING: CPU: 0 PID: 0 at /usr/src/kernel/kernel/cgroup/cgroup.c:1969 > > cgroup_setup_root+0x36c/0x4e8 > ... > > [ 0.015726] [] (cgroup_setup_root) from [] > > (cgroup_init+0x108/0x560) > > So, that's saying that the initial kernfs_node ino allocation returned > something other than 1. Hmmm... x86_32 works fine. What does the > following say? > > # mkdir -p /tmp/cgroup2 > # mount -t cgroup2 none /tmp/cgroup2 > # ls -lid /tmp/cgroup2 mkdir -p /tmp/cgroup2 mount -t cgroup2 none /tmp/cgroup2 ls -lid /tmp/cgroup2 1 dr-xr-xr-x 5 root root 0 Nov 15 08:00 /tmp/cgroup2 Full test log link, https://lkft.validation.linaro.org/scheduler/job/1011451#L1170 - Naresh