From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752186AbcAASGj (ORCPT ); Fri, 1 Jan 2016 13:06:39 -0500 Received: from h2.hallyn.com ([78.46.35.8]:32779 "EHLO h2.hallyn.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751462AbcAASGg (ORCPT ); Fri, 1 Jan 2016 13:06:36 -0500 Date: Fri, 1 Jan 2016 12:06:33 -0600 From: "Serge E. Hallyn" To: Dan Williams Cc: "Serge E. Hallyn" , Stephen Rothwell , Greg Kroah-Hartman , linux-api@vger.kernel.org, containers@lists.linux-foundation.org, Linux Kernel Mailing List , "Eric W. Biederman" , lxc-devel@lists.linuxcontainers.org, Johannes Weiner , Tejun Heo , cgroups@vger.kernel.org, Andrew Morton Subject: Re: CGroup Namespaces (v8) Message-ID: <20160101180633.GA30941@mail.hallyn.com> References: <1450844609-9194-1-git-send-email-serge.hallyn@ubuntu.com> <20160101085911.GA28407@mail.hallyn.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jan 01, 2016 at 01:42:57AM -0800, Dan Williams wrote: > On Fri, Jan 1, 2016 at 12:59 AM, Serge E. Hallyn > wrote: > > On Fri, Jan 01, 2016 at 12:19:44AM -0800, Dan Williams wrote: > >> On Tue, Dec 22, 2015 at 8:23 PM, wrote: > >> > Hi, > >> > > >> > following is a revised set of the CGroup Namespace patchset which Aditya > >> > Kali has previously sent. The code can also be found in the cgroupns.v8 > >> > branch of > >> > > >> > https://git.kernel.org/cgit/linux/kernel/git/sergeh/linux-security.git/ > >> > >> Happy New Year! > >> > >> I'm hitting both a build and boot regression in -next with these > >> patches. The bisect log reports: > >> > >> git bisect skip f176ae3a5df610e0373c39538cc7744c7788b3df > >> # bad: [54b39d263704b66cc8006ce8f7dd4743fdabae70] cgroup: cgroup > >> namespace setns support > >> git bisect bad 54b39d263704b66cc8006ce8f7dd4743fdabae70 > >> # good: [bf9b3590879afbaa54148d817ed68a0b51180375] sched: new clone > >> flag CLONE_NEWCGROUP for c > >> group namespace > >> git bisect good bf9b3590879afbaa54148d817ed68a0b51180375 > >> # only skipped commits left to test > >> # possible first bad commit: > >> [54b39d263704b66cc8006ce8f7dd4743fdabae70] cgroup: cgroup namespa > >> ce setns support > >> # possible first bad commit: > >> [f176ae3a5df610e0373c39538cc7744c7788b3df] cgroup: introduce cgro > >> up namespaces > >> > >> Where compiling "f176ae3a5df6" fails with: > >> > >> kernel/cgroup.c: In function ‘cgroupns_put’: > >> kernel/cgroup.c:5956:2: error: implicit declaration of function > >> ‘to_cg_ns’ [-Werror=implicit-f > >> unction-declaration] > >> put_cgroup_ns(to_cg_ns(ns)); > > > > Hi, > > > > is it possible you have a bad tree? > > No, I don't believe so... > > > Looking at > > https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/tree/kernel/cgroup.c?id=refs/tags/next-20151231 > > to_cg_ns should definately be defined there. > > > > Right, but it's not defined until commit 54b39d263704 "cgroup: cgroup > namespace setns support", however it is first used in the preceeding > commit f176ae3a5df6 "cgroup: introduce cgroup namespaces". The bad > patch ordering breaks bisection. > > Commit 54b39d263704 "cgroup: cgroup namespace setns support" not > booting is a separate issue. Oh - been there since my first version of the set (v4). Odd, I thought that the automated korg testing caught those. What is the simplest way to fix this? Do I send new versions of patches v3 and v4? Does Tejun or Stephen just do it inline in the git tree? Do we leave it be?