ls doesn't work well with ecryptfs on top of codafs

[Gumowe Masło]

I set up a private ecryptfs directory, then moved .Private to codafs volume. I can mount it and access files on it. However it seems, that it's impossible to get directory listing in any form. Doing ls in Private gives:
/bin/ls: cannot open directory .: Input/output error

strace shows that failing syscall is:
openat(AT_FDCWD, ".", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = -1 EIO

syslog shows:
kernel: Error opening lower file for lowe_dentry [0xffff8800058a1540] and lower_mnt [0xffff880033530920]; rc = [-5]
kernel: ecryptfs_open: Error attempting to initialize the lower file for the dentry with name [/]; rc = [-5]

[Gumowe Masło (gumowemaslo)]

tested on Linux kernel 3.7.5