Re: [PATCH v2 23/23] mm/sl[au]b: check if large object is valid in __ksize()

[Christoph Lameter]

On Thu, 14 Apr 2022, Hyeonggon Yoo wrote:

> If address of large object is not beginning of folio or size of
> the folio is too small, it must be invalid. Return zero in such cases.

This looks like a slab usage error on the part of the caller that would
benefit from a kernel log entry. A warning or an error?