Comment 14 for bug 1585434

Same issue when powering off my computer:

Linux acer-veriton 4.10.0-28-generic #32-Ubuntu SMP Fri Jun 30 05:32:18 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

Aug 2 11:30:23 acer-veriton systemd[1]: Stopping LSB: VirtualBox Linux kernel module...
Aug 2 11:30:23 acer-veriton kernel: [10362.177603] ecryptfs_decrypt_page: Error attempting to read lower page; rc = [-4]
Aug 2 11:30:23 acer-veriton kernel: [10362.177606] ecryptfs_readpage: Error decrypting page; rc = [-4]
Aug 2 11:30:23 acer-veriton kernel: [10362.178488] ecryptfs_encrypt_page: Error attempting to write lower page; rc = [-4]
Aug 2 11:30:23 acer-veriton kernel: [10362.178491] ecryptfs_write_end: Error encrypting page (upper index [0x0000000000000012])
Aug 2 11:30:23 acer-veriton systemd[1]: Stopping crash report submission daemon...
Aug 2 11:30:23 acer-veriton kernel: [10362.212362] ecryptfs_decrypt_page: Error attempting to read lower page; rc = [-4]
Aug 2 11:30:23 acer-veriton kernel: [10362.212365] ecryptfs_write_begin: Error decrypting page at index [0]; rc = [-4]
Aug 2 11:30:23 acer-veriton rsyslogd: [origin software="rsyslogd" swVersion="8.16.0" x-pid="1063" x-info="http://www.rsyslog.com"] exiting on signal 15.