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Re: [PATCHSET v3] netfilter, cgroup: implement cgroup2 path match in xt_cgroup

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Hello,

On Mon, Nov 23, 2015 at 10:53:46AM -0500, Tejun Heo wrote:
> > [   11.594536] ------------[ cut here ]------------
> > [   11.595274] WARNING: CPU: 1 PID: 1 at kernel/cgroup_pids.c:97 pids_cancel.constprop.6+0x31/0x40()
> > [   11.595958] Modules linked in:
> > [   11.596199] CPU: 1 PID: 1 Comm: systemd Not tainted 4.4.0-rc1+ #196
> > [   11.596689] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.8.2-0-g33fbe13 by qemu-project.org 04/01/2014
> > [   11.597632]  ffffffff81f66d8b ffff88007c04bb90 ffffffff8155ccdc 0000000000000000
> > [   11.598234]  ffff88007c04bbc8 ffffffff810de202 ffff8800793dda00 ffff88007a096800
> > [   11.598877]  ffff88007c04bc80 ffff88007a6b6200 0000000000000001 ffff88007c04bbd8
> > [   11.599547] Call Trace:
> > [   11.599784]  [<ffffffff8155ccdc>] dump_stack+0x4e/0x82
> > [   11.600197]  [<ffffffff810de202>] warn_slowpath_common+0x82/0xc0
> > [   11.600705]  [<ffffffff810de2fa>] warn_slowpath_null+0x1a/0x20
> > [   11.601208]  [<ffffffff8118e261>] pids_cancel.constprop.6+0x31/0x40
> > [   11.601764]  [<ffffffff8118e32d>] pids_can_attach+0x6d/0xf0
> 
> Yeah, this is a known problem regarding css's lifetime.  Working on
> it.  The earlier dump, I think, is likely to have been caused by the
> same issue.

Just posted the fix for this issue.  Can you please verify the fix?

 http://lkml.kernel.org/g/20151123195541.GA19072@mtj.duckdns.org

Thanks a lot!

-- 
tejun
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[PATCHSET v3] netfilter, cgroup: implement cgroup2 path match in xt_cgroup Tejun Heo <tj@kernel.org> - 2015-11-21 17:20 +0100
  [PATCH 1/2 iptables] libxt_cgroup: prepare for multi revisions Tejun Heo <tj@kernel.org> - 2015-11-21 17:20 +0100
    Re: [PATCH 1/2 iptables] libxt_cgroup: prepare for multi revisions Pablo Neira Ayuso <pablo@netfilter.org> - 2015-11-22 21:40 +0100
    Re: [PATCH 1/2 iptables] libxt_cgroup: prepare for multi revisions Pablo Neira Ayuso <pablo@netfilter.org> - 2015-11-22 21:40 +0100
  Re: [PATCHSET v3] netfilter, cgroup: implement cgroup2 path match in  xt_cgroup Daniel Wagner <daniel.wagner@bmw-carit.de> - 2015-11-23 08:20 +0100
    Re: [PATCHSET v3] netfilter, cgroup: implement cgroup2 path match in  xt_cgroup Daniel Wagner <daniel.wagner@bmw-carit.de> - 2015-11-23 10:00 +0100
      Re: [PATCHSET v3] netfilter, cgroup: implement cgroup2 path match in  xt_cgroup Tejun Heo <tj@kernel.org> - 2015-11-23 17:00 +0100
        Re: [PATCHSET v3] netfilter, cgroup: implement cgroup2 path match in  xt_cgroup Daniel Wagner <daniel.wagner@bmw-carit.de> - 2015-11-23 17:00 +0100
        Re: [PATCHSET v3] netfilter, cgroup: implement cgroup2 path match in  xt_cgroup Tejun Heo <tj@kernel.org> - 2015-11-23 21:00 +0100
  Re: [PATCHSET v3] netfilter, cgroup: implement cgroup2 path match  in xt_cgroup David Miller <davem@davemloft.net> - 2015-11-23 21:50 +0100
    Re: [PATCHSET v3] netfilter, cgroup: implement cgroup2 path match in  xt_cgroup Tejun Heo <tj@kernel.org> - 2015-11-23 22:00 +0100

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