kernel-packages team mailing list archive

[Seth Forshee <seth.forshee+lp@xxxxxxxxxxxxx>]

I figured out what's happening. lxc sets up /dev/kmsg as a symlink to
/dev/console, init fopens kmsg, and suddenly it owns the console. Not
sure whether the fix is to handle kmsg differently or special-case it in
upstart to be opened with O_NOCTTY. I'll leave it to Serge and James to
figure that out, and in the meantime I'll attend to the kernel patch.

** Changed in: linux (Ubuntu Trusty)
     Assignee: (unassigned) => Seth Forshee (sforshee)

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https://bugs.launchpad.net/bugs/1263738

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

Status in Upstart:
  New
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.

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