Re: [PATCH] Don't block writes to swap-files with ETXTBSY.

[Christoph Hellwig]

On Sat, Aug 28, 2021 at 09:10:15AM +1000, NeilBrown wrote:
> There are lots of different things root can do which will mess up the
> kernel badly.  The backing-store can still be changed through some other
> means.
> Do you have a particular threat or risk scenario other than "root might
> get careless"?

No, it is just that scenario.  But one that is much easier to trigger
than more convoluted ways for a root user to trigger damage through
device files, and one that can't be prevented through LSMs or the
capability system.