** Description changed:

  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, I can't tell how
- this was triggered or if this has happened before.
- 
- Found this issue because the system is crashing frequently today, so I
- dig into the syslog for clues.
+ 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
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /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
  RelatedPackageVersions:
   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.modalias: 
dmi:bvnDellInc.:bvrA15:bd12/26/2016:svnDellInc.:pnLatitude7250:pvr:rvnDellInc.:rn0N248W:rvrX02:cvnDellInc.:ct9:cvr:
  dmi.product.name: Latitude 7250
  dmi.sys.vendor: Dell Inc.

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https://bugs.launchpad.net/bugs/1747661

Title:
  ecryptfs complains about "Error encrypting page" on 4.13 Artful

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