Comment 118 for bug 1124250

Just as an info. In a fedora 21 the default value for kernel.keys.maxkeys
seems to have been increased to 1000000, with no entry in sysctl.conf; also
the "maxbytes" has a very large default value.

Manually lowering that quota still exposes the problem. I have no idea if
the keys count against the root_maxkeys quota on purpose or not.

[I changed the fedora release for this bug report to 21]