From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757501AbdLQSsS (ORCPT ); Sun, 17 Dec 2017 13:48:18 -0500 Received: from out3-smtp.messagingengine.com ([66.111.4.27]:40893 "EHLO out3-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752558AbdLQSsR (ORCPT ); Sun, 17 Dec 2017 13:48:17 -0500 X-ME-Sender: Message-Id: <1513536496.3754736.1207944032.00C6D43E@webmail.messagingengine.com> From: Bronek Kozicki To: Randy Dunlap , linux-kernel@vger.kernel.org Cc: cgroups@vger.kernel.org MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" X-Mailer: MessagingEngine.com Webmail Interface - ajax-9dc8bf78 Subject: Re: PROBLEM: NULL pointer dereference in kernel 4.14.6 References: <1513512885.3653140.1207725096.395A9CCC@webmail.messagingengine.com> <08995310-d853-ee77-ed1f-26cc336a4a30@incorrekt.com> <54a16e07-70e6-adda-ebdb-06349b4f8e86@infradead.org> In-Reply-To: <54a16e07-70e6-adda-ebdb-06349b4f8e86@infradead.org> Date: Sun, 17 Dec 2017 18:48:16 +0000 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org FWIW, I can do "cat" . I get a single number seemingly followed by an infinite stream of 0s (I tried wc -l, but did not want to wait very long and killed it). Here is what it looks like, if limited by "head": root@gdansk ~ # cat '/sys/fs/cgroup/unified/machine.slice/machine-qemu\x2d1\x2dkartuzy\x2dspice.scope/cgroup.procs' | head 10649 0 0 0 0 0 0 0 0 0 root@gdansk ~ # PID 10649 is indeed qemu process running the virtual machine in question: root@gdansk ~ # ps lw 10649 F UID PID PPID PRI NI VSZ RSS WCHAN STAT TTY TIME COMMAND 6 0 10649 1 20 0 4815836 60252 - Sl ? 2:56 /usr/bin/qemu-system-x86_64 -name guest=kartuzy-spice,process=qemu:kartuzy-spice,debug-threads=on -S -object se Sorry about taint by ZFS, but there is nothing I can do, it is my root filesystem. Since I am the only user of the package in question I could cheat and replace the license for the build of the ZFS module, but I do not see how that might help. B. From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bronek Kozicki Subject: Re: PROBLEM: NULL pointer dereference in kernel 4.14.6 Date: Sun, 17 Dec 2017 18:48:16 +0000 Message-ID: <1513536496.3754736.1207944032.00C6D43E@webmail.messagingengine.com> References: <1513512885.3653140.1207725096.395A9CCC@webmail.messagingengine.com> <08995310-d853-ee77-ed1f-26cc336a4a30@incorrekt.com> <54a16e07-70e6-adda-ebdb-06349b4f8e86@infradead.org> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=incorrekt.com; h=cc:content-transfer-encoding:content-type:date:from :in-reply-to:message-id:mime-version:references:subject:to :x-me-sender:x-me-sender:x-sasl-enc; s=fm1; bh=FYOnix8xibNOgpyGN Fs8eANbWwNgAjOTPKurzIgwe8E=; b=ZsC91Tb0ea8vh4+EYQO2VKAMnfd/jJSUW UV/CztjaiCv9ozqUq68XMCWf6re6cb+eETZWU1lbm6tcD+C1WG4MCp9z6r07RPbU OTqTUjVCs3nUDyTuyt3Tr8mZE/AYXl9cp3ZElBrHrQR6gk2+nhLlwd2oF0qVwDuO kgfp/pbois3u7VrJafWVrKeZ2lLeG8d9/p0iK5wnIha27MxOyXlyLSNsIipZ3Zhv UghzfUihVHu25IyKLJdSf3wNMjoTo2TE8TZQl0795KTFpoN5FyENynUdF4Zz4PyE wsfrGIgOB27kTimRywhDUZze/gk5kWW6P9JfQlNRCUR8uL/PpAAaw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-me-sender:x-me-sender:x-sasl-enc; s=fm1; bh=FYOnix 8xibNOgpyGNFs8eANbWwNgAjOTPKurzIgwe8E=; b=Kl05Zy6ST7AoWBOJAuL6gh /mvur5LvJ06Vw98qygFLqx7TghEjntd53wWrZW8IXuu3SfKPBYrGYHADpmtS/ST9 mS59w4mTARB8/YHJPsD8OUT6ZQ1naOX2pbIAipJBaPffylKhdxxQrl+56ye/mrug EBXXJorYuZnD0MUlzLk6YohliN2cA/Zp04cWWBmSqrgEIkbGwZ5ZyQjRlIRiFn51 D+qhGhzMsaEjUHJbZnJAYSAWmHBaPxw0h95iviQeQIo/+MvV3G+qnpdLkVWSZ8uD Laf/nuePQXJvL7I8NVgF5XmRIXsbn8o58E/LlZSzwi66PlMQ8KibQ5DJFEe1CwJA == In-Reply-To: <54a16e07-70e6-adda-ebdb-06349b4f8e86-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org> Sender: cgroups-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: Content-Type: text/plain; charset="us-ascii" To: Randy Dunlap , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org FWIW, I can do "cat" . I get a single number seemingly followed by an infinite stream of 0s (I tried wc -l, but did not want to wait very long and killed it). Here is what it looks like, if limited by "head": root@gdansk ~ # cat '/sys/fs/cgroup/unified/machine.slice/machine-qemu\x2d1\x2dkartuzy\x2dspice.scope/cgroup.procs' | head 10649 0 0 0 0 0 0 0 0 0 root@gdansk ~ # PID 10649 is indeed qemu process running the virtual machine in question: root@gdansk ~ # ps lw 10649 F UID PID PPID PRI NI VSZ RSS WCHAN STAT TTY TIME COMMAND 6 0 10649 1 20 0 4815836 60252 - Sl ? 2:56 /usr/bin/qemu-system-x86_64 -name guest=kartuzy-spice,process=qemu:kartuzy-spice,debug-threads=on -S -object se Sorry about taint by ZFS, but there is nothing I can do, it is my root filesystem. Since I am the only user of the package in question I could cheat and replace the license for the build of the ZFS module, but I do not see how that might help. B.