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

[Francois Marier]

Package: lxc
Version: 1:2.0.5-1
Severity: normal

Since I upgraded to a 4.8.0 kernel, I get these messages in my logs:

  Nov  5 18:02:08 hostname PAM-CGFS[6968]: Corrupt /proc/self/cgroup
  Nov  5 18:05:01 hostname PAM-CGFS[8574]: Corrupt /proc/self/cgroup
  Nov  5 18:05:01 hostname PAM-CGFS[8574]: Failed to get list of controllers
  Nov  5 18:05:01 hostname PAM-CGFS[8574]: Corrupt /proc/self/cgroup
  Nov  5 18:10:01 hostname PAM-CGFS[8612]: Corrupt /proc/self/cgroup
  Nov  5 18:10:01 hostname PAM-CGFS[8612]: Failed to get list of controllers

It seems to come from here:

  https://github.com/lxc/lxcfs/blob/master/pam/pam_cgfs.c#L384

Francois

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 4.8.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=fr_CA.utf8, LC_CTYPE=fr_CA.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages lxc depends on:
ii  init-system-helpers  1.45
ii  libapparmor1         2.10.95-5
ii  libc6                2.24-5
ii  libcap2              1:2.25-1
ii  liblxc1              1:2.0.5-1
ii  libseccomp2          2.3.1-2
ii  libselinux1          2.6-1
ii  lsb-base             9.20161101
ii  python3              3.5.1-4
pn  python3:any          <none>

Versions of packages lxc recommends:
ii  bridge-utils  1.5-9
ii  debootstrap   1.0.86
ii  dirmngr       2.1.15-8
ii  dnsmasq-base  2.76-4
ii  gnupg         2.1.15-8
ii  iptables      1.6.0-4
ii  libpam-cgfs   2.0.4-1
ii  lxcfs         2.0.4-1
ii  openssl       1.1.0b-2
ii  rsync         3.1.2-1
ii  uidmap        1:4.2-3.2

Versions of packages lxc suggests:
ii  apparmor     2.10.95-5
pn  btrfs-tools  <none>
pn  lua5.2       <none>
pn  lvm2         <none>

-- Configuration Files:
/etc/lxc/default.conf changed:
lxc.network.type = veth
lxc.network.flags = up
lxc.network.link = virbr0
lxc.network.hwaddr = 00:FF:AA:xx:xx:xx
lxc.network.ipv4 = 0.0.0.0/24


-- no debconf information