linux-kernel - Re: [PATCH v2] rust: macros: fix soundness issue in `module!` macro

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Message-ID: <CANiq72m4P8NNr7M0Bv6bFpLonPu=WZC_x-k1KdtzqUd=vtLObA@mail.gmail.com>
Date: Tue, 16 Apr 2024 21:36:30 +0200
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: Boqun Feng <boqun.feng@...il.com>
Cc: Benno Lossin <benno.lossin@...ton.me>, Miguel Ojeda <ojeda@...nel.org>, 
	Alex Gaynor <alex.gaynor@...il.com>, Wedson Almeida Filho <wedsonaf@...il.com>, Gary Guo <gary@...yguo.net>, 
	Björn Roy Baron <bjorn3_gh@...tonmail.com>, 
	Andreas Hindborg <a.hindborg@...sung.com>, Alice Ryhl <aliceryhl@...gle.com>, 
	Martin Rodriguez Reboredo <yakoyoku@...il.com>, Asahi Lina <lina@...hilina.net>, 
	Sumera Priyadarsini <sylphrenadin@...il.com>, Neal Gompa <neal@...pa.dev>, 
	Thomas Bertschinger <tahbertschinger@...il.com>, Andrea Righi <andrea.righi@...onical.com>, 
	Matthew Bakhtiari <dev@...k.me>, Adam Bratschi-Kaye <ark.email@...il.com>, stable@...r.kernel.org, 
	Masahiro Yamada <masahiroy@...nel.org>, Wedson Almeida Filho <wedsonaf@...gle.com>, Finn Behrens <me@...enk.dev>, 
	rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] rust: macros: fix soundness issue in `module!` macro

On Tue, Apr 16, 2024 at 7:07 PM Boqun Feng <boqun.feng@...il.com> wrote:
>
> As reported by Dirk Behme:
>
>         https://rust-for-linux.zulipchat.com/#narrow/stream/291565-Help/topic/How.20to.20use.20THIS_MODULE.20with.20.22.20rust.3A.20macros.3A.20fix.20soundness.20.2E.22/near/433512583
>
> The following is needed to allow modules using `THIS_MODULE` as a static
> variable. That being said, maybe we can merge this patch as it is, since
> it doesn't break mainline, and the following change can be done in a
> separate patch.

Fixed in `rust-fixes` now.

    [ Moved `THIS_MODULE` out of the private-in-private modules since it
      should remain public, as Dirk Behme noticed [1]. Capitalized comments,
      avoided newline in non-list SAFETY comments and reworded to add
      Reported-by and newline. ]
    Link: https://rust-for-linux.zulipchat.com/#narrow/stream/291565-Help/topic/x/near/433512583
[1]

Cheers,
Miguel