** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

** Also affects: linux (Ubuntu Artful)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu Artful)
       Status: New => Confirmed

** Changed in: linux (Ubuntu Artful)
   Importance: Undecided => Medium

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  ecryptfs complains about "Error encrypting page" on 4.13 Artful

Status in linux package in Ubuntu:
Status in linux source package in Artful:

Bug description:
  This issue was spotted on my computer for work (CID 201408-15386),
  installed with disk encrypted

  The following error message could be found in syslog

  ecryptfs_encrypt_page: Error attempting to write lower page; rc = [-4]
  ecryptfs_writepage: Error encrypting page (upper index [0x0000000000000000])

  Found this issue because the system is crashing frequently today, but
  I think this is not the cause of the crash, as the error can be found
  on last Thursday and Friday but the system is stable.

  Check through my archived syslog, this issue was first spotted on Jan.
  30 19:00, 4.13.0-32 was install earlier that day in the morning.

  For older log before Jan.30 (Jan.25 / 26) with 4.13.0-31, there is no
  such error message in the syslog.

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: linux-image-4.13.0-32-generic 4.13.0-32.35
  ProcVersionSignature: Ubuntu 4.13.0-32.35-generic 4.13.13
  Uname: Linux 4.13.0-32-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3.7
  Architecture: amd64
   /dev/snd/controlC1:  sam        1530 F.... pulseaudio
   /dev/snd/controlC0:  sam        1530 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Tue Feb  6 19:54:10 2018
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=3a922472-e01e-42fa-a61d-7d7f645e3672
  InstallationDate: Installed on 2017-07-12 (209 days ago)
  InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Release amd64 (20170412)
  MachineType: Dell Inc. Latitude 7250
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-32-generic.efi.signed 
root=/dev/mapper/ubuntu--gnome--vg-root ro quiet splash vt.handoff=7
   linux-restricted-modules-4.13.0-32-generic N/A
   linux-backports-modules-4.13.0-32-generic  N/A
   linux-firmware                             1.169.3
  SourcePackage: linux
  UpgradeStatus: Upgraded to artful on 2018-01-24 (13 days ago)
  dmi.bios.date: 12/26/2016
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A15
  dmi.board.name: 0N248W
  dmi.board.vendor: Dell Inc.
  dmi.board.version: X02
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.product.name: Latitude 7250
  dmi.sys.vendor: Dell Inc.

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