[lxc-users] unprivileged container with systemd?

[Serge Hallyn]

Quoting Dirk Geschke (dirk at lug-erding.de):
> Hi Serge,
> 
> > now I started lxcfs within gdb:
> > 
> > (gdb) where
> > #0  0x00007ffff706b610 in __recvmsg_nocancel ()
> >     at ../sysdeps/unix/syscall-template.S:82
> > #1  0x0000000000403cdd in recv_creds (sock=8, cred=0x7fffffffe5b0, 
> >     v=0x7fffffffe5af "1\377\377\377\377\377\377\377\377\377\377\377\377\001")
> >     at lxcfs.c:799
> 
> hmm, maybe this is the reason? There is a Zombie in the process 
> list:
> 
> root     27218  0.0  0.0      0     0 pts/1    Z    20:51   0:00 [lxcfs]
> <defunct>
> 
> So probably lxcfs forks off a second copy of itself and communicates
> via a socketpair with each other. But if the one fails, it won't
> answer?
> 
> This one is a child of the first one:
> 
> $ ps -lp 27218
> F S   UID   PID  PPID  C PRI  NI ADDR SZ WCHAN  TTY          TIME CMD
> 5 Z     0 27218 26992  0  80   0 -     0 ?      pts/1    00:00:00 lxcf <defunct>
> 
> Maybe it is an lxcfs problem at all?

How have you been installing lxcfs?  Is it possible that you have
an old copy sitting around?