Public bug reported:

I get these strange and worrying errors:

[  185.714463] ecryptfs_decrypt_page: Error attempting to read lower page; rc = 
[-4]
[  185.714482] ecryptfs_readpage: Error decrypting page; rc = [-4]
[  186.716177] ecryptfs_encrypt_page: Error attempting to write lower page; rc 
= [-4]
[  186.716199] ecryptfs_write_end: Error encrypting page (upper index 
[0x000000000000011e])

The system seems to freeze for a second and then continues.

smart says that the hard-drive is fine:

SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status:  (0x02) Offline data collection activity
                                        was completed without error.
                                        Auto Offline Data Collection: Disabled.
Self-test execution status:      (   0) The previous self-test routine completed
                                        without error or no self-test has ever 
                                        been run.
Total time to complete Offline 
data collection:                ( 5760) seconds.
Offline data collection
capabilities:                    (0x51) SMART execute Offline immediate.
                                        No Auto Offline data collection support.
                                        Suspend Offline collection upon new
                                        command.
                                        No Offline surface scan supported.
                                        Self-test supported.
                                        No Conveyance Self-test supported.
                                        Selective Self-test supported.
SMART capabilities:            (0x0003) Saves SMART data before entering
                                        power-saving mode.
                                        Supports SMART auto save timer.
Error logging capability:        (0x01) Error logging supported.
                                        General Purpose Logging supported.
Short self-test routine 
recommended polling time:        (   2) minutes.
Extended self-test routine
recommended polling time:        (  60) minutes.
SCT capabilities:              (0x703d) SCT Status supported.
                                        SCT Error Recovery Control supported.
                                        SCT Feature Control supported.
                                        SCT Data Table supported.

SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  
WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x002f   200   200   051    Pre-fail  Always       
-       0
  3 Spin_Up_Time            0x0027   164   139   021    Pre-fail  Always       
-       758
  4 Start_Stop_Count        0x0032   095   095   000    Old_age   Always       
-       5330
  5 Reallocated_Sector_Ct   0x0033   200   200   140    Pre-fail  Always       
-       0
  7 Seek_Error_Rate         0x002f   100   253   051    Pre-fail  Always       
-       0
  9 Power_On_Hours          0x0032   071   071   000    Old_age   Always       
-       21324
 10 Spin_Retry_Count        0x0033   100   100   051    Pre-fail  Always       
-       0
 11 Calibration_Retry_Count 0x0032   100   100   000    Old_age   Always       
-       0
 12 Power_Cycle_Count       0x0032   095   095   000    Old_age   Always       
-       5304
183 Runtime_Bad_Block       0x0032   091   091   000    Old_age   Always       
-       9
184 End-to-End_Error        0x0033   100   100   097    Pre-fail  Always       
-       0
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always       
-       0
188 Command_Timeout         0x0032   100   097   000    Old_age   Always       
-       43
190 Airflow_Temperature_Cel 0x0022   060   052   040    Old_age   Always       
-       40 (Min/Max 24/41)
191 G-Sense_Error_Rate      0x0032   001   001   000    Old_age   Always       
-       1000
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       
-       179
193 Load_Cycle_Count        0x0032   148   148   000    Old_age   Always       
-       157315
194 Temperature_Celsius     0x0022   103   095   000    Old_age   Always       
-       40
196 Reallocated_Event_Count 0x0032   200   200   000    Old_age   Always       
-       0
197 Current_Pending_Sector  0x0032   200   200   000    Old_age   Always       
-       0
198 Offline_Uncorrectable   0x0030   200   200   000    Old_age   Offline      
-       0
199 UDMA_CRC_Error_Count    0x0032   200   200   000    Old_age   Always       
-       0
200 Multi_Zone_Error_Rate   0x0009   200   200   051    Pre-fail  Offline      
-       0

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ecryptfs-utils 111-0ubuntu1.1
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: KDE
Date: Tue Jul 26 15:02:38 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2016-05-13 (73 days ago)
InstallationMedia: Kubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
SourcePackage: ecryptfs-utils
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: ecryptfs-utils (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug xenial

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https://bugs.launchpad.net/bugs/1606584

Title:
  ecryptfs_write_end: Error encrypting page (upper index
  [0x000000000000011e])

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