[systemd-bugs] [Bug 76412] New: [systemd-nspawn] out of memory and su system errors

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=76412

          Priority: medium
            Bug ID: 76412
          Assignee: systemd-bugs at lists.freedesktop.org
           Summary: [systemd-nspawn] out of memory and su system errors
        QA Contact: systemd-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: ullysses.a.eoff at intel.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: general
           Product: systemd

Created attachment 96119
  --> https://bugs.freedesktop.org/attachment.cgi?id=96119&action=edit
strace for first issue

I updated to systemd 211 (which should have the fix for bug 75733, if I'm not
mistaken) from rawhide on my base Fedora 20 x86_64 OS, then rebooted.  I am now
having a few new issues when trying to run commands as a user in a 32-bit
(i686) container on an x86_64 host OS.  These issues do not happen if the
container is a 64-bit (x86_64) container.

#### Issue 1 ####

Running systemd-nspawn with -u <user> option to execute a command when <user>
is part of the "wheel" group in the container.

$ uname -r
  3.13.6-200.fc20.x86_64
$ su -
$ mkdir /srv/mycontainer-i686
$ mkdir -p /srv/mycontainer-i686/etc/yum/vars
$ echo i386 > /srv/mycontainer-i686/etc/yum/vars/basearch
$ echo i686 > /srv/mycontainer-i686/etc/yum/vars/arch
$ yum -y --releasever=20 --nogpg --installroot=/srv/mycontainer-i686
--disablerepo='*' --enablerepo=fedora install systemd passwd yum fedora-release
vim-minimal sudo
$ systemd-nspawn -D /srv/mycontainer-i686 adduser jail
$ systemd-nspawn -D /srv/mycontainer-i686 passwd -d jail
$ systemd-nspawn -u jail -D /srv/mycontainer-i686 whoami
  Spawning container mycontainer-i686 on /srv/mycontainer-i686. Press ^] three
times within 1s to abort execution.
  jail
$ systemd-nspawn -D /srv/mycontainer-i686 usermod -a -G wheel jail
$ systemd-nspawn -u jail -D /srv/mycontainer-i686 whoami
  Spawning container mycontainer-i686 on /srv/mycontainer-i686. Press ^] three
times within 1s to abort execution.
  Out of memory.

  Container mycontainer-i686 failed with error code 1.

#### Issue 2 ####

Running systemd-nspawn as root to execute an "su <user> -c <command>" command.

$ uname -r
  3.13.6-200.fc20.x86_64
$ su -
$ mkdir /srv/mycontainer-i686
$ mkdir -p /srv/mycontainer-i686/etc/yum/vars
$ echo i386 > /srv/mycontainer-i686/etc/yum/vars/basearch
$ echo i686 > /srv/mycontainer-i686/etc/yum/vars/arch
$ yum -y --releasever=20 --nogpg --installroot=/srv/mycontainer-i686
--disablerepo='*' --enablerepo=fedora install systemd passwd yum fedora-release
vim-minimal sudo
$ systemd-nspawn -D /srv/mycontainer-i686 adduser jail
$ systemd-nspawn -D /srv/mycontainer-i686 passwd -d jail
$ systemd-nspawn -D /srv/mycontainer-i686 su jail -c whoami
  Spawning container mycontainer-i686 on /srv/mycontainer-i686. Press ^] three
times within 1s to abort execution.
  su: System error

  Container mycontainer-i686 failed with error code 1.


I've attached straces for both of the issues if that helps.

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