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[Seth Forshee <seth.forshee+lp@xxxxxxxxxxxxx>]

I tried to reproduce in a freshly installed and fully updated xenial vm
(admittedly not a desktop installation). Starting docker containers with
the --kernel-memory argument works fine, and the value in
/sys/fs/cgroup/memory/memory.kmem.limit_in_bytes is as expected. I get
the EBUSY error writing to /sys/fs/cgroup/memory/system.slice/lxc-
net.service/memory.kmem.limit_in_bytes, but I strongly suspect this is
unrelated.

My kernel is:

$ uname -a
Linux lp1568592 4.4.0-18-generic #34-Ubuntu SMP Wed Apr 6 14:01:02 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

Can you update, then see if your docker problem remains? If so, does it
work without the --kernel-memory argument? Thanks.

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https://bugs.launchpad.net/bugs/1568592

Title:
  bug of "memory.kmem.limit_in_bytes" and "memory.kmem.usage_in_bytes"

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  In ubuntuxenial with linux kernel 4.4,

  "memory.kmem.limit_in_bytes" cannot be written,

  and the value of "memory.kmem.usage_in_bytes" is always 0.

  This issue doesn't happen in ubuntu wily (kernel = 4.2)

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-generic 4.4.0.18.19
  ProcVersionSignature: Ubuntu 4.4.0-18.34-generic 4.4.6
  Uname: Linux 4.4.0-18-generic x86_64
  NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
  AlsaVersion: Advanced Linux Sound Architecture Driver Version k4.4.0-18-generic.
  ApportVersion: 2.20.1-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ghostplant   2724 F.... pulseaudio
   /dev/snd/controlC1:  ghostplant   2724 F.... pulseaudio
  CurrentDesktop: GNOME-Flashback:Unity
  Date: Mon Apr 11 03:24:49 2016
  JournalErrors:
   Error: command ['journalctl', '-b', '--priority=warning', '--lines=1000'] failed with exit code 1: Hint: You are currently not seeing messages from other users and the system.
         Users in the 'systemd-journal' group can see all messages. Pass -q to
         turn off this notice.
   No journal files were opened due to insufficient permissions.
  MachineType: Micro-Star International Co., Ltd. GE60 2PG
  PciMultimedia:

  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-18-generic root=UUID=9b9acac2-b16b-4328-abc9-407fe4ce4e4d ro quiet swapaccount=1
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-18-generic N/A
   linux-backports-modules-4.4.0-18-generic  N/A
   linux-firmware                            1.157
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  WifiSyslog:

  dmi.bios.date: 12/01/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: E16GFIMS.626
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: MS-16GF
  dmi.board.vendor: Micro-Star International Co., Ltd.
  dmi.board.version: REV:0.B
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrE16GFIMS.626:bd12/01/2014:svnMicro-StarInternationalCo.,Ltd.:pnGE602PG:pvrREV1.0:rvnMicro-StarInternationalCo.,Ltd.:rnMS-16GF:rvrREV0.B:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: GE60 2PG
  dmi.product.version: REV:1.0
  dmi.sys.vendor: Micro-Star International Co., Ltd.

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