linux-kernel - Re: [PATCH 1/3] rust: allocator: Prevent mis-aligned allocation

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Message-ID: <CANiq72=iUJ7WT7BFJH_U3AGg=7a5=zA2VOv=LOycR_XRph1Qdw@mail.gmail.com>
Date:   Mon, 31 Jul 2023 02:13:44 +0200
From:   Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To:     Boqun Feng <boqun.feng@...il.com>
Cc:     Björn Roy Baron <bjorn3_gh@...tonmail.com>,
        rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, Miguel Ojeda <ojeda@...nel.org>,
        Alex Gaynor <alex.gaynor@...il.com>,
        Wedson Almeida Filho <wedsonaf@...il.com>,
        Gary Guo <gary@...yguo.net>,
        Benno Lossin <benno.lossin@...ton.me>,
        Martin Rodriguez Reboredo <yakoyoku@...il.com>,
        Alice Ryhl <aliceryhl@...gle.com>,
        Dariusz Sosnowski <dsosnowski@...snowski.pl>,
        Geoffrey Thomas <geofft@...reload.com>,
        Fox Chen <foxhlchen@...il.com>,
        John Baublitz <john.m.baublitz@...il.com>,
        Christoph Lameter <cl@...ux.com>,
        Pekka Enberg <penberg@...nel.org>,
        David Rientjes <rientjes@...gle.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        Roman Gushchin <roman.gushchin@...ux.dev>,
        Hyeonggon Yoo <42.hyeyoo@...il.com>,
        Kees Cook <keescook@...omium.org>, stable@...r.kernel.org,
        Andreas Hindborg <nmi@...aspace.dk>
Subject: Re: [PATCH 1/3] rust: allocator: Prevent mis-aligned allocation

On Mon, Jul 31, 2023 at 12:54 AM Boqun Feng <boqun.feng@...il.com> wrote:
>
> Good to know, thanks!

Yeah, thanks Björn!

> Agreed. It's better. So reword as below:
>
> // Note: Although these are *safe* functions, but they are called by the
> // compiler with the parameters that obey the same `GlobalAlloc`
> // function safety requirements: size and align should form a valid
> // layout, and size is greater than 0.

+1, thanks!

Applied to `rust-fixes`, but please feel free to send `Reviewed-by`s.

Cheers,
Miguel