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Re: [RFC] [PATCH 6/6] Kprobes: Remove breakpoints from the copied pages

Hugh Dickins <hugh@veritas.com> writes:

> [...]
> > This patch removes the breakpoints if the pages read from the page
> > cache contains breakpoints. If the pages containing the breakpoints
> > is copied from the page cache, the copied image would also contain
> > breakpoints in them. [...]
>
> With that said... it looks to me like one of the scariest and
> most inappropriate sets I can remember.  Getting the kernel to
> connive in presenting an incoherent view of its pagecache:
> I don't think we'd ever want that.
> [...]

That's a fair point.  Could someone (Prasanna?)  explain the
implications of an alternate scheme that relied on COW and/or forcing
probed pages into memory?

- FChE
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