Re: [PATCH 01/12] uprobes: split THPs before trying replace them

From: Andrew Morton
Date: Tue Jan 24 2017 - 16:29:06 EST

On Tue, 24 Jan 2017 19:28:13 +0300 "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx> wrote:

> For THPs page_check_address() always fails. It's better to split them
> first before trying to replace.

So what does this mean. uprobes simply fails to work when trying to
place a probe into a THP memory region? How come nobody noticed (and
reported) this when using the feature?