[PATCH v3 0/7] User namespace mount updates

[Al Viro]

On Tue, Nov 17, 2015 at 11:25:51AM -0600, Seth Forshee wrote:

> Shortly after that I plan to follow with support for ext4. I've been
> fuzzing ext4 for a while now and it has held up well, and I'm currently
> working on hand-crafted attacks. Ted has commented privately (to others,
> not to me personally) that he will fix bugs for such attacks, though I
> haven't seen any public comments to that effect.

_Static_ attacks, or change-image-under-mounted-fs attacks?