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CGroup Namespaces (v8)

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  CGroup Namespaces (v8) serge.hallyn@ubuntu.com - 2015-12-23 05:30 +0100
    [PATCH 7/8] cgroup: Add documentation for cgroup namespaces serge.hallyn@ubuntu.com - 2015-12-23 05:30 +0100
      Re: [PATCH 7/8] cgroup: Add documentation for cgroup namespaces Tejun Heo <tj@kernel.org> - 2015-12-28 18:50 +0100
        Re: [PATCH 7/8] cgroup: Add documentation for cgroup namespaces Serge Hallyn <serge@hallyn.com> - 2015-12-28 22:20 +0100
          [PATCH] cgroup: Add documentation for cgroup namespaces Tejun Heo <tj@kernel.org> - 2015-12-28 22:50 +0100
    [PATCH 6/8] cgroup: mount cgroupns-root when inside non-init cgroupns serge.hallyn@ubuntu.com - 2015-12-23 05:30 +0100
      Re: [PATCH 6/8] cgroup: mount cgroupns-root when inside non-init  cgroupns Sergey Senozhatsky <sergey.senozhatsky@gmail.com> - 2015-12-31 14:50 +0100
        Re: [PATCH 6/8] cgroup: mount cgroupns-root when inside non-init  cgroupns "Serge E. Hallyn" <serge.hallyn@ubuntu.com> - 2016-01-01 02:00 +0100
          Re: [PATCH 6/8] cgroup: mount cgroupns-root when inside non-init  cgroupns Sergey Senozhatsky <sergey.senozhatsky@gmail.com> - 2016-01-01 02:20 +0100
          Re: [PATCH 6/8] cgroup: mount cgroupns-root when inside non-init  cgroupns Tejun Heo <tj@kernel.org> - 2016-01-01 03:00 +0100
    [PATCH 1/8] kernfs: Add API to generate relative kernfs path serge.hallyn@ubuntu.com - 2015-12-23 05:30 +0100
      Re: [PATCH 1/8] kernfs: Add API to generate relative kernfs path Tejun Heo <tj@kernel.org> - 2015-12-23 17:10 +0100
        Re: [PATCH 1/8] kernfs: Add API to generate relative kernfs path "Serge E. Hallyn" <serge.hallyn@ubuntu.com> - 2015-12-23 17:40 +0100
        Re: [PATCH 1/8 v8.2] kernfs: Add API to generate relative kernfs path "Serge E. Hallyn" <serge.hallyn@ubuntu.com> - 2015-12-23 20:40 +0100
      Re: [PATCH 1/8] kernfs: Add API to generate relative kernfs path Tejun Heo <tj@kernel.org> - 2015-12-23 17:30 +0100
        Re: [PATCH 1/8] kernfs: Add API to generate relative kernfs path Greg KH <gregkh@linuxfoundation.org> - 2015-12-23 18:00 +0100
    Re: CGroup Namespaces (v8) Tejun Heo <tj@kernel.org> - 2015-12-28 18:50 +0100
    Re: CGroup Namespaces (v8) Dan Williams <dan.j.williams@intel.com> - 2016-01-01 09:30 +0100
      Re: CGroup Namespaces (v8) "Serge E. Hallyn" <serge.hallyn@ubuntu.com> - 2016-01-01 10:00 +0100
        Re: CGroup Namespaces (v8) Dan Williams <dan.j.williams@intel.com> - 2016-01-01 10:50 +0100
          Re: CGroup Namespaces (v8) "Serge E. Hallyn" <serge.hallyn@ubuntu.com> - 2016-01-01 19:10 +0100
            Re: CGroup Namespaces (v8) Dan Williams <dan.j.williams@intel.com> - 2016-01-01 20:20 +0100
              Re: CGroup Namespaces (v8) Tejun Heo <tj@kernel.org> - 2016-01-02 13:00 +0100

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#1299964

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
> <serge.hallyn@ubuntu.com> wrote:
> > On Fri, Jan 01, 2016 at 12:19:44AM -0800, Dan Williams wrote:
> >> On Tue, Dec 22, 2015 at 8:23 PM,  <serge.hallyn@ubuntu.com> 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?
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#1299977

On Fri, Jan 1, 2016 at 10:06 AM, Serge E. Hallyn
<serge.hallyn@ubuntu.com> wrote:
> On Fri, Jan 01, 2016 at 01:42:57AM -0800, Dan Williams wrote:
>> 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?

I'm assuming it can be fixed up when you re-spin the patches to fix
the boot failure.
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#1300066

On Fri, Jan 01, 2016 at 11:14:14AM -0800, Dan Williams wrote:
> On Fri, Jan 1, 2016 at 10:06 AM, Serge E. Hallyn
> <serge.hallyn@ubuntu.com> wrote:
> > On Fri, Jan 01, 2016 at 01:42:57AM -0800, Dan Williams wrote:
> >> 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?
> 
> I'm assuming it can be fixed up when you re-spin the patches to fix
> the boot failure.

I reverted the cgroup namespace patchset for the time being.

Thanks.

-- 
tejun
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