linux-kernel - Re: [PATCH] rust: delete `ForeignOwnable::borrow

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <CANiq72=cT_f90GJkaRq_rBKYMnruSf87UVKSX0TBbNWETYya_g@mail.gmail.com>
Date:   Wed, 2 Aug 2023 19:37:21 +0200
From:   Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To:     Alice Ryhl <aliceryhl@...gle.com>
Cc:     rust-for-linux@...r.kernel.org, Miguel Ojeda <ojeda@...nel.org>,
        Wedson Almeida Filho <wedsonaf@...il.com>,
        Alex Gaynor <alex.gaynor@...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>,
        linux-kernel@...r.kernel.org, patches@...ts.linux.dev
Subject: Re: [PATCH] rust: delete `ForeignOwnable::borrow_mut`

On Thu, Jul 6, 2023 at 11:46 AM Alice Ryhl <aliceryhl@...gle.com> wrote:
>
> We discovered that the current design of `borrow_mut` is problematic.
> This patch removes it until a better solution can be found.
>
> Specifically, the current design gives you access to a `&mut T`, which
> lets you change where the `ForeignOwnable` points (e.g., with
> `core::mem::swap`). No upcoming user of this API intended to make that
> possible, making all of them unsound.
>
> Signed-off-by: Alice Ryhl <aliceryhl@...gle.com>

Applied to `rust-fixes`, thanks! I added a `Fixes` tag.

Cheers,
Miguel