From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752140Ab3KFW5O (ORCPT ); Wed, 6 Nov 2013 17:57:14 -0500 Received: from out02.mta.xmission.com ([166.70.13.232]:45618 "EHLO out02.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750813Ab3KFW5M (ORCPT ); Wed, 6 Nov 2013 17:57:12 -0500 From: ebiederm@xmission.com (Eric W. Biederman) To: Serge Hallyn Cc: Oleg Nesterov , Andy Lutomirski , Brad Spengler , Christian Seiler , lkml , Andy Whitcroft , Lxc development list References: <20131106180232.GA8980@ac100> <20131106193311.GA18720@redhat.com> <20131106225337.GB11611@ac100> Date: Wed, 06 Nov 2013 14:53:12 -0800 In-Reply-To: <20131106225337.GB11611@ac100> (Serge Hallyn's message of "Wed, 6 Nov 2013 16:53:37 -0600") Message-ID: <87ppqdjg6f.fsf@tw-ebiederman.twitter.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-XM-AID: U2FsdGVkX19WW7gCHsnQ5W99523kWxZCeOJlpcKJgsw= X-SA-Exim-Connect-IP: 8.25.195.25 X-SA-Exim-Mail-From: ebiederm@xmission.com X-Spam-Report: * -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP * 1.5 TR_Symld_Words too many words that have symbols inside * 0.0 T_TM2_M_HEADER_IN_MSG BODY: T_TM2_M_HEADER_IN_MSG * 0.8 BAYES_50 BODY: Bayes spam probability is 40 to 60% * [score: 0.4882] * -0.0 DCC_CHECK_NEGATIVE Not listed in DCC * [sa01 1397; Body=1 Fuz1=1 Fuz2=1] X-Spam-DCC: XMission; sa01 1397; Body=1 Fuz1=1 Fuz2=1 X-Spam-Combo: *;Serge Hallyn X-Spam-Relay-Country: Subject: Re: CLONE_PARENT after setns(CLONE_NEWPID) X-Spam-Flag: No X-SA-Exim-Version: 4.2.1 (built Wed, 14 Nov 2012 14:26:46 -0700) X-SA-Exim-Scanned: Yes (on in01.mta.xmission.com) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Serge Hallyn writes: > So apart from peers seeing the new task as having pid 0, and > sigchild going to the grandparent, are there any other side > effects? Is ptrace an issue? (I took a quick look but it > doesn't seem like it) There is nothing new the pid namespace adds to the pid namespace case. Eric