linux-kernel - error[E0432]: unresolved import `core::sync::atomic::AtomicU64`

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Message-ID: <202506080840.LF35utzo-lkp@intel.com>
Date: Sun, 8 Jun 2025 08:21:25 +0800
From: kernel test robot <lkp@...el.com>
To: FUJITA Tomonori <fujita.tomonori@...il.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
	Miguel Ojeda <ojeda@...nel.org>, Danilo Krummrich <dakr@...nel.org>
Subject: error[E0432]: unresolved import `core::sync::atomic::AtomicU64`

Hi FUJITA,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   8630c59e99363c4b655788fd01134aef9bcd9264
commit: 584e61452f75bfeac2cdd83730b4059526ec60c7 rust: helpers: Remove volatile qualifier from io helpers
date:   8 weeks ago
config: um-randconfig-r062-20250608 (https://download.01.org/0day-ci/archive/20250608/202506080840.LF35utzo-lkp@intel.com/config)
compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project f819f46284f2a79790038e1f6649172789734ae8)
rustc: rustc 1.78.0 (9b00956e5 2024-04-29)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250608/202506080840.LF35utzo-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/202506080840.LF35utzo-lkp@intel.com/

All errors (new ones prefixed by >>):

   ***
   *** Rust bindings generator 'bindgen' < 0.69.5 together with libclang >= 19.1
   *** may not work due to a bug (https://github.com/rust-lang/rust-bindgen/pull/2824),
   *** unless patched (like Debian's).
   ***   Your bindgen version:  0.65.1
   ***   Your libclang version: 21.0.0
   ***
   ***
   *** Please see Documentation/rust/quick-start.rst for details
   *** on how to set up the Rust support.
   ***
>> error[E0432]: unresolved import `core::sync::atomic::AtomicU64`
   --> rust/kernel/block/mq/operations.rs:15:33
   |
   15 | use core::{marker::PhantomData, sync::atomic::AtomicU64, sync::atomic::Ordering};
   |                                 ^^^^^^^^^^^^^^---------
   |                                 |             |
   |                                 |             help: a similar name exists in the module: `AtomicU32`
   |                                 no `AtomicU64` in `sync::atomic`
--
>> error[E0432]: unresolved import `core::sync::atomic::AtomicU64`
   --> rust/kernel/block/mq/request.rs:16:20
   |
   16 |     sync::atomic::{AtomicU64, Ordering},
   |                    ^^^^^^^^^
   |                    |
   |                    no `AtomicU64` in `sync::atomic`
   |                    help: a similar name exists in the module: `AtomicU32`

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