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Message-ID: <CANiq72msV_jLFDtA4LUk01W6WF_hJEivdeKyR14xmA6ocYx3RQ@mail.gmail.com>
Date: Mon, 8 Sep 2025 11:33:24 +0200
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: Burak Emir <bqe@...gle.com>, Kaibo Ma <ent3rm4n@...il.com>
Cc: Yury Norov <yury.norov@...il.com>, Kees Cook <kees@...nel.org>,
Rasmus Villemoes <linux@...musvillemoes.dk>, Viresh Kumar <viresh.kumar@...aro.org>,
Miguel Ojeda <ojeda@...nel.org>, 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>, Andreas Hindborg <a.hindborg@...nel.org>,
Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>,
"Gustavo A . R . Silva" <gustavoars@...nel.org>, Carlos LLama <cmllamas@...gle.com>,
Pekka Ristola <pekkarr@...tonmail.com>, rust-for-linux@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH v16 3/5] rust: add bitmap API.
On Mon, Sep 8, 2025 at 9:22 AM Burak Emir <bqe@...gle.com> wrote:
>
> + #[test]
> + fn owned_bitmap_out_of_bounds() -> Result<(), AllocError> {
> + // TODO: Kunit #[test]s do not support `cfg` yet,
> + // so we add it here in the body.
> + #[cfg(not(CONFIG_RUST_BITMAP_HARDENED))]
> + {
> + let mut b = BitmapVec::new(128, GFP_KERNEL)?;
> + b.set_bit(2048);
> + b.set_bit_atomic(2048);
> + b.clear_bit(2048);
> + b.clear_bit_atomic(2048);
> + assert_eq!(None, b.next_bit(2048));
> + assert_eq!(None, b.next_zero_bit(2048));
> + assert_eq!(None, b.last_bit());
> + }
> + Ok(())
> + }
For context, Kaibo Ma already posted a patch to solve that limitation,
so we should be able to clean this up e.g. next cycle:
https://lore.kernel.org/rust-for-linux/20250907201558.104566-2-ent3rm4n@gmail.com/
Cheers,
Miguel
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