Using util-linux 2.24.1 on Arch Linux, running `findmnt` only shows
mounts at or under "/proc", and ignores all other mount points
(including "/"). This only happens in "tree" mode – if I run `findmnt
--raw` it lists all mounts correctly.

This happens with custom-built 3.14-rc3 kernel, but works fine with
Arch's stock 3.13.x (the same Arch initramfs for both). Building
`findmnt` from util-linux.git did not change anything.

> $ findmnt
> TARGET                       SOURCE      FSTYPE    OPTIONS
> /proc                        proc        proc      rw,nosuid,nodev,noexec,relatime
> └─/proc/sys/fs/binfmt_misc   systemd-1   autofs    rw,relatime,fd=21,pgrp=1,timeout=300,minprot
>   └─/proc/sys/fs/binfmt_misc binfmt_misc binfmt_mi rw,relatime

It seems there is a small difference in /proc/self/mountinfo with 3.14;
the entry for / looks like this:

> 19 0 8:3 / / rw,relatime - ext4 /dev/sda3 rw,data=ordered

...while in 3.13 it used to be:

> 19 1 8:3 / / rw,relatime - ext4 /dev/sda3 rw,data=ordered

-- 
Mantas Mikulėnas <grawity@gmail.com>