On 06/09/2016 12:40 PM, Stéphane Graber wrote:
Sounds like your host /proc is over-mounted which triggers a protection
mechanism in the kernel that prevents an unprivileged user from mounting
it.

Look in your host's /proc/mounts for any mountpoint under /proc, try
unmounting them one by one until you find the one that's triggering the
protection.

Thanks Stéphane,

Here's what's there:

grep proc /proc/mounts:

proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0

systemd-1 /proc/sys/fs/binfmt_misc autofs rw,relatime,fd=36,pgrp=1,timeout=0,minproto=5,maxproto=5,direct 0 0

xenfs /proc/xen xenfs rw,relatime 0 0

I don't think I can safely remove any of those.  Any other ideas?
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