linux-kernel - Re: [PATCH v5 2/6] rust: bitmap: add BitmapVec::new

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Message-ID: <202511140146.shdRx5TZ-lkp@intel.com>
Date: Fri, 14 Nov 2025 01:41:09 +0800
From: kernel test robot <lkp@...el.com>
To: Alice Ryhl <aliceryhl@...gle.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Yury Norov <yury.norov@...il.com>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	Arve Hjønnevåg <arve@...roid.com>,
	Todd Kjos <tkjos@...roid.com>, Martijn Coenen <maco@...roid.com>,
	Joel Fernandes <joelagnelf@...dia.com>,
	Christian Brauner <brauner@...nel.org>,
	Carlos Llamas <cmllamas@...gle.com>,
	Suren Baghdasaryan <surenb@...gle.com>, Burak Emir <bqe@...gle.com>,
	Miguel Ojeda <ojeda@...nel.org>, Boqun Feng <boqun.feng@...il.com>,
	Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <lossin@...nel.org>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Trevor Gross <tmgross@...ch.edu>,
	Danilo Krummrich <dakr@...nel.org>, rust-for-linux@...r.kernel.org,
	linux-kernel@...r.kernel.org, Alice Ryhl <aliceryhl@...gle.com>
Subject: Re: [PATCH v5 2/6] rust: bitmap: add BitmapVec::new_inline()

Hi Alice,

kernel test robot noticed the following build errors:

[auto build test ERROR on 211ddde0823f1442e4ad052a2f30f050145ccada]

url:    https://github.com/intel-lab-lkp/linux/commits/Alice-Ryhl/rust-bitmap-add-MAX_LEN-and-MAX_INLINE_LEN-constants/20251112-205752
base:   211ddde0823f1442e4ad052a2f30f050145ccada
patch link:    https://lore.kernel.org/r/20251112-binder-bitmap-v5-2-8b9d7c7eca82%40google.com
patch subject: [PATCH v5 2/6] rust: bitmap: add BitmapVec::new_inline()
config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20251114/202511140146.shdRx5TZ-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
rustc: rustc 1.88.0 (6b00bc388 2025-06-23)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251114/202511140146.shdRx5TZ-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202511140146.shdRx5TZ-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from kernel/sched/rq-offsets.c:5:
   kernel/sched/sched.h:3743:18: warning: variable 'cpumask' set but not used [-Wunused-but-set-variable]
   3743 |         struct cpumask *cpumask;
   |                         ^
   1 warning generated.
>> error[E0599]: no associated item named `NO_ALLOC_MAX_LEN` found for struct `bitmap::BitmapVec` in the current scope
   --> rust/kernel/bitmap.rs:239:31
   |
   154 | pub struct BitmapVec {
   | -------------------- associated item `NO_ALLOC_MAX_LEN` not found for this struct
   ...
   239 |             nbits: BitmapVec::NO_ALLOC_MAX_LEN,
   |                               ^^^^^^^^^^^^^^^^ associated item not found in `BitmapVec`

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki