sudo apt-get upgrade
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back:
  linux-generic linux-headers-generic linux-image-generic
The following packages will be upgraded:
  firefox firefox-locale-en firefox-locale-ru flashplugin-installer
  grub-common grub-pc grub-pc-bin grub2 grub2-common libavcodec-extra
  libavcodec-ffmpeg-extra56 libavformat-ffmpeg56 libavresample-ffmpeg2
  libavutil-ffmpeg54 libldb1 libnss3 libnss3-nssdb libpng12-0 libpng12-0:i386
  libpostproc-ffmpeg53 libsmbclient libswresample-ffmpeg1 libswscale-ffmpeg3
  libwbclient0 linux-libc-dev python-ldb python-samba samba samba-common
  samba-common-bin samba-dsdb-modules samba-libs samba-vfs-modules
33 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.
Need to get 0 B/63,9 MB of archives.
After this operation, 26,6 kB disk space will be freed.
Do you want to continue? [Y/n] y
Extracting templates from packages: 100%
Preconfiguring packages ...
dpkg: unrecoverable fatal error, aborting:
 unable to open files list file for package 'libopencv-video2.4v5:amd64': Stale file handle
E: Sub-process /usr/bin/dpkg returned an error code (2)