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When you test it and it is still an issue, kindly upload the updated logs by running only once: apport-collect 1522650 and any other logs that are relevant for this particular issue. ** Changed in: ubuntu Status: New => Incomplete ** Package changed: ubuntu => coreutils (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to coreutils in Ubuntu. https://bugs.launchpad.net/bugs/1522650 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@testtmp:~$ id -u 1000 ubuntu@testtmp:~$ id -g 1000 ubuntu@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@testtmp:~$ root@testtmp:~# To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/coreutils/+bug/1522650/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp