Re: [GIT PULL] hash addresses printed with %p

[Linus Torvalds]

On Wed, Nov 29, 2017 at 1:08 PM, Tobin C. Harding <me@xxxxxxxx> wrote:
>
> If you haven't wasted enough time on this can you tell me what you mean
> by 'completely breaks %pK'?

The whole point of %pK is that it's a "safer" %p that doesn't leak
information if you set kptr_restrict.

With that patch-set, it now leaks _more_ information than %p when
kptr_restrict isn't set, so %pK went from "be more careful than %p" to
"be wildly less careful than %p".

Not because %pK itself changed, but because the semantics of %p did.
The baseline moved, and the "safe" version did not.

                 Linus