[Lxc-users] Permission denied on lxc-console login

[Milan Zamazal]

I've found where the problem originates:

The "Permission denied" message is caused by the error code returned
from pam_open_session call in /bin/login.  When I commented out the
following line in /etc/pam.d/login, the problem disappeared:

  session    required   pam_limits.so

This is weird as I can't see any reason why this should fail.  So I
debugged the pam_limit module and found it returns failure because of
the following call:

    status = setpriority(PRIO_PROCESS, 0, pl->priority);

where pl->priority is 0.

I commented out the following line in the container configuration

  lxc.cap.drop = sys_nice

and now I can log in even with pam_limits enabled.

Considering the fact the problem appears somewhat irregularly as I've
described in my previous posts, I guess there must be a bug somewhere,
otherwise it makes no sense to me.

What do you think?