Delete a directory, crash the system

[Warren Block]

On Sun, 28 Jul 2013, Frank Leonhardt wrote:

> So it boils down to:
>
> a) Leave is is, as it can detect when the kernel has trashed its vnode table; 
> or
>
> b) It's probably caused by "expected" FS corruption, so handle it gracefully.

It would be good to log a system error message like "filesystem may be 
corrupt" to give the user some clue other than a seemingly impossible 
error with no explanation.