[Bug 1196518] [NEW] lxc-start failed with lxc_cgroup - Invalid argument - write /sys/fs/cgroup/devices/lxc/<NAME>/devices.deny : Invalid argument with kernel 3.10

[Jean-Baptiste Lallement]

Public bug reported:

With kernel 3.10.0 lxc-create fails with the following error:
      lxc-start 1372673552.852 NOTICE   lxc_conf - 'saucy-i386-20130701-1012' is setup.
      lxc-start 1372673552.852 DEBUG    lxc_cgroup - cgroup_path_get: called for subsys devices name lxc/saucy-i386-20130701-1012

      lxc-start 1372673552.852 DEBUG    lxc_cgroup - using cgroup mounted at '/sys/fs/cgroup/devices'
      lxc-start 1372673552.852 DEBUG    lxc_cgroup - cgroup_path_get: returning /sys/fs/cgroup/devices/lxc/saucy-i386-20130701-1012 for subsystem devices.deny
      lxc-start 1372673552.852 ERROR    lxc_cgroup - Invalid argument - write /sys/fs/cgroup/devices/lxc/saucy-i386-20130701-1012/devices.deny : Invalid argument
      lxc-start 1372673552.852 ERROR    lxc_conf - Error setting devices.deny to a for lxc/saucy-i386-20130701-1012


Second run of lxc-start works fine.
Downgrading to 3.9.0-7 fixes the issue.

The rootfs of the container is a loop-mounted squashfs from a loop-
mounted ISO of latest saucy desktop image.

pre-start, pre-mount, post-stop, lxc config and fstab attached

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: lxc 0.9.0-0ubuntu15
ProcVersionSignature: Ubuntu 3.10.0-1.8-generic 3.10.0-rc7
Uname: Linux 3.10.0-1-generic x86_64
ApportVersion: 2.10.2-0ubuntu3
Architecture: amd64
Date: Mon Jul  1 14:26:35 2013
MarkForUpload: True
SourcePackage: lxc
UpgradeStatus: Upgraded to saucy on 2012-01-31 (516 days ago)
defaults.conf:
 lxc.network.type = veth
 lxc.network.link = lxcbr0
 lxc.network.flags = up

** Affects: lxc (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug saucy third-party-packages

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https://bugs.launchpad.net/bugs/1196518

Title:
  lxc-start failed with lxc_cgroup - Invalid argument - write
  /sys/fs/cgroup/devices/lxc/<NAME>/devices.deny : Invalid argument
  with kernel 3.10

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