[Bug 1522650] Re: the user namespace in ubuntu 15.04 can not run correctly

[Paul White]

Thank you for taking the time to report this bug and helping to make
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changes in Ubuntu since that time you reported the bug and your problem
may have been fixed with some of the updates. It would help us a lot if
you could test it on a currently supported Ubuntu version.

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** Changed in: ubuntu
       Status: New => Incomplete

** Package changed: ubuntu => coreutils (Ubuntu)

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Title:
  the user namespace in ubuntu 15.04 can not run correctly

Status in coreutils package in Ubuntu:
  Incomplete

Bug description:
  Following this guide

  http://manpages.ubuntu.com/manpages/wily/man7/user_namespaces.7.html

  
  And run this program on ubuntu 15.04, it would have exception

  System information as following:

  
  Linux 3.19.0-30-generic
  ubuntu at testtmp:~$ id -u
  1000
  ubuntu at testtmp:~$ id -g
  1000
  ubuntu at testtmp:~$ ./userns_child_exec -p -m -U -M '0 1000 1' -G '0 1000 1' bash
  ERROR: write /proc/5629/gid_map: Operation not permitted
  About to exec bash
  ubuntu at testtmp:~$ root at testtmp:~#

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