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Message-ID: <5653375D.7000504@bmw-carit.de>
Date: Mon, 23 Nov 2015 16:57:17 +0100
From: Daniel Wagner <daniel.wagner@...-carit.de>
To: Tejun Heo <tj@...nel.org>
CC: <davem@...emloft.net>, <pablo@...filter.org>, <kaber@...sh.net>,
<kadlec@...ckhole.kfki.hu>, <daniel@...earbox.net>,
<nhorman@...driver.co>, <lizefan@...wei.com>, <hannes@...xchg.org>,
<netdev@...r.kernel.org>, <netfilter-devel@...r.kernel.org>,
<coreteam@...filter.org>, <cgroups@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <kernel-team@...com>,
<ninasc@...com>
Subject: Re: [PATCHSET v3] netfilter, cgroup: implement cgroup2 path match in
xt_cgroup
On 11/23/2015 04:53 PM, Tejun Heo wrote:
> On Mon, Nov 23, 2015 at 09:54:32AM +0100, Daniel Wagner wrote:
> ...
>>> [ 3.224665] BUG: spinlock bad magic on CPU#1, systemd/1
>>> [ 3.225653] lock: cgroup_sk_update_lock+0x0/0x60, .magic: 00000000, .owner: systemd/1, .owner_cpu: 1
>>> [ 3.227034] CPU: 1 PID: 1 Comm: systemd Not tainted 4.4.0-rc1+ #195
>>> [ 3.227862] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.8.2-0-g33fbe13 by qemu-project.org 04/01/2014
>>> [ 3.228906] ffffffff834a2160 ffff88007c043ad0 ffffffff81551edc ffff88007c028000
>>> [ 3.229512] ffff88007c043af0 ffffffff81136868 ffffffff834a2160 ffff88007aff5940
>>> [ 3.230105] ffff88007c043b08 ffffffff81136b05 ffffffff834a2160 ffff88007c043b20
>>> [ 3.230716] Call Trace:
>>> [ 3.230906] [<ffffffff81551edc>] dump_stack+0x4e/0x82
>>> [ 3.231289] [<ffffffff81136868>] spin_dump+0x78/0xc0
>>> [ 3.231642] [<ffffffff81136b05>] do_raw_spin_unlock+0x75/0xd0
>>> [ 3.232039] [<ffffffff81bced77>] _raw_spin_unlock+0x27/0x50
>>> [ 3.232431] [<ffffffff819b1848>] update_classid_sock+0x68/0x80
>>> [ 3.232836] [<ffffffff812855c1>] iterate_fd+0x71/0x150
>>> [ 3.233197] [<ffffffff819b1757>] update_classid+0x47/0x80
>>> [ 3.233571] [<ffffffff819b17d4>] cgrp_attach+0x14/0x20
>>> [ 3.233929] [<ffffffff81188951>] cgroup_taskset_migrate+0x1e1/0x330
>>> [ 3.234366] [<ffffffff81188b95>] cgroup_migrate+0xf5/0x190
>>> [ 3.235130] [<ffffffff81188da6>] cgroup_attach_task+0x176/0x200
>>> [ 3.235953] [<ffffffff8118922d>] __cgroup_procs_write+0x2ad/0x460
>>> [ 3.236805] [<ffffffff81189414>] cgroup_procs_write+0x14/0x20
>>> [ 3.237205] [<ffffffff81185ae5>] cgroup_file_write+0x35/0x1c0
>>> [ 3.237600] [<ffffffff812e25e1>] kernfs_fop_write+0x141/0x190
>>> [ 3.237998] [<ffffffff81265e78>] __vfs_write+0x28/0xe0
>>> [ 3.239554] [<ffffffff812665ec>] vfs_write+0xac/0x1a0
>>> [ 3.240308] [<ffffffff81266f09>] SyS_write+0x49/0xb0
>>> [ 3.240656] [<ffffffff81bcfb32>] entry_SYSCALL_64_fastpath+0x12/0x76
>>
>> I have enabled a few additional cgroup controllers as well, because I was
>> trying to figure out why I only see the 'memory' cgroup controller in
>> cgroup.controllers. pid and io show up but not net_prio or net_cls.
>> Not sure why systemd (v227) is not mounting them.
>
> net_prio and net_cls aren't gonna be on the v2 hierarchy. The match
> in this patchset is being introduced to replace them; however, you can
> mount them separately on a v1 hierarchy and use the same as before.
Okay, I could have figured that myself I guess. I mounted the v1
hierarchy and it works as you have described it.
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