kernel-packages team mailing list archive

[Serge Hallyn <1263738@xxxxxxxxxxxxxxxxxx>]

Quoting Seth Forshee (seth.forshee+lp@xxxxxxxxxxxxx):
> stderr actually is mapped to a pty. The problem seems to be that getty
> can't set /dev/console as its controlling terminal because it's already
> the controlling tty for init, which is in a different process group.
> Thus getty ends up with no controlling tty, this is inherited by bash,
> and thus bash cannot set up job control.

Interesting.

Note that what you describe should also be the case if using a regular
container

	sudo lxc-create -t ubuntu-cloud -n u1
	sudo lxc-start -n u1

Is the process group of init somehow ending up different in the user
namespace case?  Or else why would this only be a problem in the
user namespace case?

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1263738

Title:
  login console 0 in user namespace container is not configured right

Status in “linux” package in Ubuntu:
  Confirmed
Status in “lxc” package in Ubuntu:
  Triaged
Status in “linux” source package in Trusty:
  Confirmed
Status in “lxc” source package in Trusty:
  Triaged

Bug description:
  When you create a container in a private user namespace, when you start the
  container without the '-d' flag, that console is not properly set up.  Logging in
  gives you

  -bash: no job control in this shell

  and hitting ctrl-c reboots the container.

  Consoles from 'lxc-console -n $container' behave correctly.

  This may be a kernel issue, as discussed here:

  http://lists.linuxcontainers.org/pipermail/lxc-
  devel/2013-October/005843.html

  so also marking this as affecting the kernel.

  This can be worked around, but really needs to be fixed before trusty
  is frozen.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1263738/+subscriptions