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[Jürg Häfliger <1829989@xxxxxxxxxxxxxxxxxx>]

** Tags added: kernel-daily-bug

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https://bugs.launchpad.net/bugs/1829989

Title:
  memcg_use_hierarchy from controllers test suite in LTP failed

Status in ubuntu-kernel-tests:
  Fix Released
Status in linux package in Ubuntu:
  Invalid
Status in linux-aws package in Ubuntu:
  Invalid
Status in linux source package in Bionic:
  Invalid
Status in linux-aws source package in Bionic:
  Invalid
Status in linux source package in Cosmic:
  Won't Fix
Status in linux-aws source package in Cosmic:
  Won't Fix

Bug description:
  startup='Wed May 22 05:59:07 2019'
  memcg_use_hierarchy_test 1 TINFO: Starting test 1
  sh: echo: I/O error
  memcg_use_hierarchy_test 1 TINFO: set /dev/memcg/memory.use_hierarchy to 0 failed
  memcg_use_hierarchy_test 1 TPASS: process 31577 is killed
  memcg_use_hierarchy_test 2 TINFO: Starting test 2
  sh: echo: I/O error
  memcg_use_hierarchy_test 2 TINFO: set /dev/memcg/memory.use_hierarchy to 0 failed
  memcg_use_hierarchy_test 2 TFAIL: echo 1 > memory.use_hierarchy passed unexpectedly
  memcg_use_hierarchy_test 3 TINFO: Starting test 3
  sh: echo: I/O error
  memcg_use_hierarchy_test 3 TINFO: set /dev/memcg/memory.use_hierarchy to 0 failed
  memcg_use_hierarchy_test 3 TPASS: echo 0 > subgroup/memory.use_hierarchy failed as expected
  tag=memcg_use_hierarchy stime=1558504747 dur=1 exit=exited stat=1 core=no cu=5 cs=5

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: linux-image-4.15.0-50-generic 4.15.0-50.54
  ProcVersionSignature: User Name 4.15.0-50.54-generic 4.15.18
  Uname: Linux 4.15.0-50-generic x86_64
  AlsaDevices:
   total 0
   crw-rw---- 1 root audio 116,  1 May 22 02:57 seq
   crw-rw---- 1 root audio 116, 33 May 22 02:57 timer
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
  ApportVersion: 2.20.9-0ubuntu7.6
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord'
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CurrentDmesg:
   [14538.862950] cfg80211: Loading compiled-in X.509 certificates for regulatory database
   [14538.874559] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
  Date: Wed May 22 07:33:33 2019
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
  Lsusb: Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
  PciMultimedia:
   
  ProcFB: 0 cirrusdrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-50-generic root=UUID=576666e8-9e7f-40ee-934e-f1dce18323e5 ro
  RelatedPackageVersions:
   linux-restricted-modules-4.15.0-50-generic N/A
   linux-backports-modules-4.15.0-50-generic  N/A
   linux-firmware                             1.173.6
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/01/2014
  dmi.bios.vendor: SeaBIOS
  dmi.bios.version: Ubuntu-1.8.2-1ubuntu1
  dmi.chassis.type: 1
  dmi.chassis.vendor: QEMU
  dmi.chassis.version: pc-i440fx-xenial
  dmi.modalias: dmi:bvnSeaBIOS:bvrUbuntu-1.8.2-1ubuntu1:bd04/01/2014:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-xenial:cvnQEMU:ct1:cvrpc-i440fx-xenial:
  dmi.product.name: Standard PC (i440FX + PIIX, 1996)
  dmi.product.version: pc-i440fx-xenial
  dmi.sys.vendor: QEMU

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