[CRIU] strangeness on pts after migration

[Tycho Andersen]

Hi guys,

If I do a migration where I'm ssh'd into a container, there is some
strangeness afterwards:

ubuntu at foo:~$ ls
Fatal Python error: Failed to open /dev/urandom
Aborted (core dumped)
ubuntu at foo:~$ ls /dev/urandom
Fatal Python error: Failed to open /dev/urandom
Aborted (core dumped)
ubuntu at foo:~$ 
Password: 
ubuntu at foo:~$ 


ubuntu at foo:~$ 
ubuntu at foo:~$ 
ubuntu at foo:~$ 
ubuntu at foo:~$ 
ubuntu at foo:~$ 
ubuntu at foo:~$ 
ubuntu at foo:~$ 
ubuntu at foo:~$ ls 
Login incorrect
foo login: /dev
Password:                                                                                           
ubuntu at foo:~$ 
ubuntu at foo:~$ 
ubuntu at foo:~$ 
ubuntu at foo:~$ 
ubuntu at foo:~$ 
Login incorrect
foo login: ubunt
Password: 
Fatal Python error: Failed to open /dev/urandom
Aborted (core dumped)
ubuntu at foo:~$ 
buntu
Fatal Python error: Failed to open /dev/urandom
Aborted (core dumped)

it looks like for whatever reason, something has spawned a login on my pts
device:

ubuntu at foo:~$ ps auxf
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root         1  0.0  0.1  45560  3740 ?        Ss   15:00   0:00 /sbin/init
root       329  0.0  0.1   5724  3676 ?        S<Ls 15:00   0:00 /sbin/iscsid
root       351  0.0  0.1  67464  2816 ?        Ss   15:00   0:00 /bin/login --
ubuntu     376  0.0  0.0  45104  1936 ?        Ss   15:00   0:00 /lib/systemd/systemd --user
ubuntu     377  0.0  0.0  60816  1536 ?        S    15:00   0:00  \_ (sd-pam)
root        82  0.0  0.0  28548  1124 ?        Ss   15:00   0:00 /lib/systemd/systemd-logind
root        85  0.0  0.0  27728   288 ?        Ss   15:00   0:00 /usr/sbin/cron -f
daemon      86  0.0  0.0  26044   220 ?        Ss   15:00   0:00 /usr/sbin/atd -f
syslog      89  0.0  0.0 262692   668 ?        Ssl  15:00   0:00 /usr/sbin/rsyslogd -n
root        91  0.0  0.0 274488   744 ?        Ssl  15:00   0:00 /usr/lib/accountsservice/accounts-daemon
message+    92  0.0  0.0  42900   488 ?        Ss   15:00   0:00 /usr/bin/dbus-daemon --system --address=s
root       107  0.0  0.0 277180   724 ?        Ssl  15:00   0:00 /usr/lib/policykit-1/polkitd --no-debug
root       237  0.0  0.0  16120   872 ?        Ss   15:00   0:00 /sbin/dhclient -1 -v -pf /run/dhclient.et
root       321  0.0  0.0  65612   740 ?        Ss   15:00   0:00 /usr/sbin/sshd -D
root       374  0.0  0.0  95460   956 ?        Ss   15:00   0:00  \_ sshd: ubuntu [priv]
ubuntu     413  0.0  0.0  95460   972 ?        S    15:00   0:00      \_ sshd: ubuntu at pts/0
ubuntu     414  0.0  0.1  21312  3508 pts/0    Ss   15:00   0:00          \_ -bash
ubuntu     136  0.0  0.1  36084  2472 pts/0    R+   15:01   0:00              \_ ps auxf
root       328  0.0  0.0   5224   144 ?        Ss   15:00   0:00 /sbin/iscsid
root        49  0.0  0.0  35276  1728 ?        Ss   15:00   0:00 /lib/systemd/systemd-journald


after a while, I get:

ubuntu at foo:~$ 
Login incorrect
Maximum number of tries exceeded (5)
ubuntu at foo:~$ ls -alh /dev
total 9.5K
drwxr-xr-x  8 root root    460 Jul  1 14:57 .
drwxr-xr-x 23 root root     23 Jul  1 15:00 ..
crw--w----  1 root tty  136, 0 Jul  1 15:00 console
lrwxrwxrwx  1 root root     11 Jul  1 14:57 core -> /proc/kcore
lrwxrwxrwx  1 root root     13 Jul  1 14:57 fd -> /proc/self/fd
crw-rw-rw-  1 root root   1, 7 Jul  1 14:57 full
drwxr-xr-x  2 root root      0 Jul  1 15:00 hugepages
lrwxrwxrwx  1 root root     25 Jul  1 14:57 initctl -> /run/systemd/initctl/fifo
lrwxrwxrwx  1 root root     28 Jul  1 14:57 log -> /run/systemd/journal/dev-log
drwxr-xr-x  2 root root   4.0K Jun 29 17:38 lxd
drwx--x--x  2 root root   4.0K Jul  1 15:00 .lxd-mounts
drwxrwxrwt  2 root root     40 Jul  1 15:00 mqueue
crw-rw-rw-  1 root root   1, 3 Jul  1 14:57 null
lrwxrwxrwx  1 root root     13 Jul  1 14:57 ptmx -> /dev/pts/ptmx
drwxr-xr-x  2 root root      0 Jul  1 15:00 pts
crw-rw-rw-  1 root root   1, 8 Jul  1 14:57 random
drwxrwxrwt  2 root root     40 Jul  1 14:57 shm
lrwxrwxrwx  1 root root     15 Jul  1 14:57 stderr -> /proc/self/fd/2
lrwxrwxrwx  1 root root     15 Jul  1 14:57 stdin -> /proc/self/fd/0
lrwxrwxrwx  1 root root     15 Jul  1 14:57 stdout -> /proc/self/fd/1
crw-rw-rw-  1 root root   5, 0 Jul  1 14:57 tty
crw-rw-rw-  1 root root   1, 9 Jul  1 14:57 urandom
crw-rw-rw-  1 root root   1, 5 Jul  1 14:57 zero

Any ideas what might cause this? Or how to debug? It seems like the devices are
all there, but something is clearly screwy.

Tycho