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[Jürg Häfliger <1747823@xxxxxxxxxxxxxxxxxx>]

** Tags added: kernel-daily-bug

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https://bugs.launchpad.net/bugs/1747823

Title:
  noresv-preserve-resv-page test in libhugetlbfs failed on Trusty arm64

Status in ubuntu-kernel-tests:
  Triaged
Status in linux package in Ubuntu:
  Triaged

Bug description:
  Steps:
  1. Deploy an ARM64 system with Trusty
  2. Install necessary packages
  3. git clone --depth=1 -b next https://github.com/libhugetlbfs/libhugetlbfs.git
  4. make BUILDTYPE=NATIVEONLY
  5. execute the run_test.py in tests directory

  Result:
  * The noresv-preserve-resv-page test case will fail

  Output with sudo ./run_test.py -v:
  noresv-preserve-resv-page (2M: 64):	Starting testcase "noresv-preserve-resv-page", pid 16071
  Reserve all hugepages 31935
  Write  to 0x2f97e00000 to steal reserved page
  FAIL	Steal reserved page

  Output with sudo ./run_test.py -V
  noresv-preserve-resv-page (2M: 64): libhugetlbfs [ms10-34-mcdivittB0-kernel:19589]: INFO: Found pagesize 2048 kB
  libhugetlbfs [ms10-34-mcdivittB0-kernel:19589]: INFO: Parsed kernel version: [3] . [13] . [0] 
  libhugetlbfs [ms10-34-mcdivittB0-kernel:19589]: INFO: Feature private_reservations is present in this kernel
  libhugetlbfs [ms10-34-mcdivittB0-kernel:19589]: INFO: Feature noreserve_safe is present in this kernel
  libhugetlbfs [ms10-34-mcdivittB0-kernel:19589]: INFO: Feature map_hugetlb is present in this kernel
  libhugetlbfs [ms10-34-mcdivittB0-kernel:19589]: INFO: Kernel has MAP_PRIVATE reservations.  Disabling heap prefaulting.
  libhugetlbfs [ms10-34-mcdivittB0-kernel:19589]: INFO: Kernel supports MAP_HUGETLB
  libhugetlbfs [ms10-34-mcdivittB0-kernel:19589]: INFO: HUGETLB_SHARE=0, sharing disabled
  libhugetlbfs [ms10-34-mcdivittB0-kernel:19589]: INFO: HUGETLB_NO_RESERVE=no, reservations enabled
  libhugetlbfs [ms10-34-mcdivittB0-kernel:19589]: INFO: No segments were appropriate for remapping
  FAIL    Steal reserved page


  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-141-generic 3.13.0-141.190
  ProcVersionSignature: User Name 3.13.0-141.190-generic 3.13.11-ckt39
  Uname: Linux 3.13.0-141-generic aarch64
  AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
  ApportVersion: 2.14.1-0ubuntu3.27
  Architecture: arm64
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
  CRDA: Error: [Errno 2] No such file or directory: 'iw'
  Date: Wed Feb  7 03:11:38 2018
  Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99
  PciMultimedia:

  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB:

  ProcKernelCmdLine: console=ttyS0,9600n8r ro
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-141-generic N/A
   linux-backports-modules-3.13.0-141-generic  N/A
   linux-firmware                              1.127.24
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)

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