linux-kernel - Re: [PATCH 1/3] rust: add userspace pointers

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Message-ID: <CALNs47u-wVfgkK8cB_qe2JRfrxP9wM8J8e0RJwDcGbNVh_uBNg@mail.gmail.com>
Date: Sat, 10 Feb 2024 01:06:07 -0600
From: Trevor Gross <tmgross@...ch.edu>
To: Alice Ryhl <aliceryhl@...gle.com>
Cc: Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
	Wedson Almeida Filho <wedsonaf@...il.com>, Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 
	Björn Roy Baron <bjorn3_gh@...tonmail.com>, 
	Benno Lossin <benno.lossin@...ton.me>, Andreas Hindborg <a.hindborg@...sung.com>, 
	Kees Cook <keescook@...omium.org>, Al Viro <viro@...iv.linux.org.uk>, 
	Andrew Morton <akpm@...ux-foundation.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
	Arve Hjønnevåg <arve@...roid.com>, 
	Todd Kjos <tkjos@...roid.com>, Martijn Coenen <maco@...roid.com>, 
	Joel Fernandes <joel@...lfernandes.org>, Carlos Llamas <cmllamas@...gle.com>, 
	Suren Baghdasaryan <surenb@...gle.com>, Arnd Bergmann <arnd@...db.de>, linux-mm@...ck.org, 
	linux-kernel@...r.kernel.org, rust-for-linux@...r.kernel.org, 
	Christian Brauner <brauner@...nel.org>
Subject: Re: [PATCH 1/3] rust: add userspace pointers

On Thu, Feb 8, 2024 at 6:53 AM Alice Ryhl <aliceryhl@...gle.com> wrote:
> Leaking pointer addresses in logs is frowned upon in the kernel, so I
> don't think we should include that.

Sounds like the very correct decision from what Greg and Kees said. If
we add an impl in the future (to be able to `#[derive(Debug)]` on
anything containing this type) it could just print
`0x****************`.