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[Launchpad Bug Tracker <1553353@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package util-linux - 2.27.1-6ubuntu3

---------------
util-linux (2.27.1-6ubuntu3) xenial; urgency=medium

  * Add debian/patches/script-use-empty-slave.patch taken from
    upstream git (LP: #1553353, Closes: #820843)

 -- Simon Deziel <simon.deziel@xxxxxxxxx>  Wed, 13 Apr 2016 15:01:21
+0000

** Changed in: util-linux (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1553353

Title:
  tail'ing a file in a script session hangs

Status in util-linux package in Ubuntu:
  Fix Released
Status in util-linux source package in Xenial:
  Fix Released
Status in util-linux package in Debian:
  New

Bug description:
  Steps to reproduce:

  1) Start script session (same issue when script is saving to /dev/null)
  script # or: script /dev/null
  2) Tail a file
  tailf /var/log/syslog
  3) Press "Enter" 2 times
  4) Notice the script process taking 100% CPU

  This regression was introduced upstream by this commit:
  https://git.kernel.org/cgit/utils/util-linux/util-
  linux.git/commit/?id=54c6611d6f7b73609a5331f4d0bcf63c4af6429e

  $ lsb_release -rd
  Description:	Ubuntu Xenial Xerus (development branch)
  Release:	16.04

  $ apt-cache policy util-linux bsdutils coreutils
  util-linux:
    Installed: 2.27.1-4ubuntu1
    Candidate: 2.27.1-4ubuntu1
    Version table:
   *** 2.27.1-4ubuntu1 500
          500 http://archive.ubuntu.com/ubuntu xenial-proposed/main amd64 Packages
          100 /var/lib/dpkg/status
       2.27.1-3ubuntu1 500
          500 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages
  bsdutils:
    Installed: 1:2.27.1-4ubuntu1
    Candidate: 1:2.27.1-4ubuntu1
    Version table:
   *** 1:2.27.1-4ubuntu1 500
          500 http://archive.ubuntu.com/ubuntu xenial-proposed/main amd64 Packages
          100 /var/lib/dpkg/status
       1:2.27.1-3ubuntu1 500
          500 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages
  coreutils:
    Installed: 8.25-2ubuntu2
    Candidate: 8.25-2ubuntu2
    Version table:
   *** 8.25-2ubuntu2 500
          500 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages
          100 /var/lib/dpkg/status

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: util-linux 2.27.1-4ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-10.25-generic 4.4.3
  Uname: Linux 4.4.0-10-generic x86_64
  NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Fri Mar  4 15:14:15 2016
  SourcePackage: util-linux
  UpgradeStatus: No upgrade log present (probably fresh install)

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