Comment 19 for bug 1263738

Serge: I've got a patch that fixes the problem. I've uploaded a test build along with the patch to:

http://people.canonical.com/~sforshee/lp1263738/linux-3.13.0-3.18~lp1263738v201401152110/

I still want to verify that it's impossible to steal a tty from a process in a parent namespace, but if that checks out and the patch looks good to you I'll send it upstream.

I do think however that upstart should also be issuing TIOCNOTTY after opening /dev/console. It seems fairly clear from the code that the intention is to not own the console device.