[pkg-lxc-devel] Bug#843450: Bug#843450: Bug#843450: lxc: Corrupt /proc/self/cgroup / Failed to get list of controllers

[Evgeni Golov]

Hey,

On Mon, Nov 07, 2016 at 08:55:21AM -0800, Francois Marier wrote:
> On 2016-11-07 at 08:17:09, Evgeni Golov wrote:
> > Can you please post the outputs of
> >  cat /proc/1/mountinfo
> 
> # cat mountinfo | grep cgroup
> 26 16 0:22 / /sys/fs/cgroup ro,nosuid,nodev,noexec shared:9 - tmpfs tmpfs ro,mode=755
> 27 26 0:23 / /sys/fs/cgroup/systemd rw,nosuid,nodev,noexec,relatime shared:10 - cgroup2 cgroup rw
> 29 26 0:25 / /sys/fs/cgroup/net_cls,net_prio rw,nosuid,nodev,noexec,relatime shared:13 - cgroup cgroup rw,net_cls,net_prio
> 30 26 0:26 / /sys/fs/cgroup/perf_event rw,nosuid,nodev,noexec,relatime shared:14 - cgroup cgroup rw,perf_event
> 31 26 0:27 / /sys/fs/cgroup/blkio rw,nosuid,nodev,noexec,relatime shared:15 - cgroup cgroup rw,blkio
> 32 26 0:28 / /sys/fs/cgroup/cpu,cpuacct rw,nosuid,nodev,noexec,relatime shared:16 - cgroup cgroup rw,cpu,cpuacct
> 33 26 0:29 / /sys/fs/cgroup/memory rw,nosuid,nodev,noexec,relatime shared:17 - cgroup cgroup rw,memory
> 34 26 0:30 / /sys/fs/cgroup/pids rw,nosuid,nodev,noexec,relatime shared:18 - cgroup cgroup rw,pids
> 35 26 0:31 / /sys/fs/cgroup/devices rw,nosuid,nodev,noexec,relatime shared:19 - cgroup cgroup rw,devices
> 36 26 0:32 / /sys/fs/cgroup/cpuset rw,nosuid,nodev,noexec,relatime shared:20 - cgroup cgroup rw,cpuset
> 37 26 0:33 / /sys/fs/cgroup/freezer rw,nosuid,nodev,noexec,relatime shared:21 - cgroup cgroup rw,freezer
> 
> >  cat /proc/self/cgroup
> 
> # cat /proc/self/cgroup
> 9:freezer:/
> 8:cpuset:/
> 7:devices:/user.slice
> 6:pids:/user.slice/user-1000.slice/user at 1000.service
> 5:memory:/user.slice
> 4:cpu,cpuacct:/user.slice
> 3:blkio:/user.slice
> 2:perf_event:/
> 1:net_cls,net_prio:/
> 0::/user.slice/user-1000.slice/user at 1000.service/gnome-terminal-server.service
> 
> > I suspect that with kernel 4.8 systemd mounts th cgroup2 fs instead of
> > old cgroup and this breaks libpam-cgfs :(
> >
> > See also https://github.com/lxc/lxc/issues/1280
> 
> Indeed that looks exactly like it.

Can you please try systemd 232-3?
You should not need to pass systemd.legacy_systemd_cgroup_controller anymore as the offending change was reverted.

Greets
Evgeni