linux-kernel - Re: [PATCH v15 0/5] rust: adds Bitmap API, ID pool and bindings

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Message-ID: <aLv5Xce6R4ofalnf@stanley.mountain>
Date: Sat, 6 Sep 2025 12:05:33 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
Cc: Yury Norov <yury.norov@...il.com>, Burak Emir <bqe@...gle.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 v15 0/5] rust: adds Bitmap API, ID pool and bindings

Here is the patch so people who want to build linux-next can just apply
it instead of needing to cut and paste and then %s/    // or whatever...
Hopefully, people aren't building kernels over the weekend and it's fixed
on Monday.  But just in case.

regards,
dan carpenter

diff --git a/rust/kernel/bitmap.rs b/rust/kernel/bitmap.rs
index 6e0824579781..2f00e91e9c35 100644
--- a/rust/kernel/bitmap.rs
+++ b/rust/kernel/bitmap.rs
@@ -551,18 +551,21 @@ fn bitmap_set_clear_find() -> Result<(), AllocError> {
         Ok(())
     }
 
-    #[cfg(not(CONFIG_RUST_BITMAP_HARDENED))]
     #[test]
     fn owned_bitmap_out_of_bounds() -> Result<(), AllocError> {
-        let mut b = BitmapVec::new(128, GFP_KERNEL)?;
+        #[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());

-        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(())
     }