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[Serge Hallyn <1498162@xxxxxxxxxxxxxxxxxx>]

It's the setuid and setgid bits with user namespace.

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

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https://bugs.launchpad.net/bugs/1498162

Title:
  unable to make backup link of `./usr/sbin/uuidd' before installing new
  version: Operation not permitted

Status in linux package in Ubuntu:
  New
Status in util-linux package in Ubuntu:
  Confirmed

Bug description:
  Upon trying to do an apt-get upgrade I run into this error:

  
  sudo apt-get dist-upgrade 
  Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  Calculating upgrade... Done
  The following packages will be upgraded:
    uuid-runtime
  1 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
  2 not fully installed or removed.
  Need to get 0 B/12.3 kB of archives.
  After this operation, 0 B of additional disk space will be used.
  Do you want to continue? [Y/n] 
  (Reading database ... 27622 files and directories currently installed.)
  Preparing to unpack .../uuid-runtime_2.20.1-5.1ubuntu20.7_amd64.deb ...
  Unpacking uuid-runtime (2.20.1-5.1ubuntu20.7) over (2.20.1-5.1ubuntu20.6) ...
  dpkg: error processing archive /var/cache/apt/archives/uuid-runtime_2.20.1-5.1ubuntu20.7_amd64.deb (--unpack):
   unable to make backup link of `./usr/sbin/uuidd' before installing new version: Operation not permitted
  Processing triggers for man-db (2.6.7.1-1ubuntu1) ...
  Errors were encountered while processing:
   /var/cache/apt/archives/uuid-runtime_2.20.1-5.1ubuntu20.7_amd64.deb
  E: Sub-process /usr/bin/dpkg returned an error code (1)

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: util-linux 2.20.1-5.1ubuntu20.7
  ProcVersionSignature: Ubuntu 3.19.0-26.28~14.04.1-generic 3.19.8-ckt4
  Uname: Linux 3.19.0-26-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.13
  Architecture: amd64
  Date: Mon Sep 21 19:43:02 2015
  ProcEnviron:
   TERM=screen-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: util-linux
  UpgradeStatus: No upgrade log present (probably fresh install)

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