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Message-ID: <202509062218.Mo9Wsmcd-lkp@intel.com>
Date: Sat, 6 Sep 2025 22:23:15 +0800
From: kernel test robot <lkp@...el.com>
To: Benno Lossin <lossin@...nel.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>,
Andreas Hindborg <a.hindborg@...nel.org>,
Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>,
Danilo Krummrich <dakr@...nel.org>, Fiona Behrens <me@...enk.dev>,
Alban Kurti <kurti@...icto.ai>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] rust: pin-init: add references to previously initialized
fields
Hi Benno,
kernel test robot noticed the following build errors:
[auto build test ERROR on 8f5ae30d69d7543eee0d70083daf4de8fe15d585]
url: https://github.com/intel-lab-lkp/linux/commits/Benno-Lossin/rust-pin-init-add-references-to-previously-initialized-fields/20250905-220242
base: 8f5ae30d69d7543eee0d70083daf4de8fe15d585
patch link: https://lore.kernel.org/r/20250905140047.3325945-1-lossin%40kernel.org
patch subject: [PATCH] rust: pin-init: add references to previously initialized fields
config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20250906/202509062218.Mo9Wsmcd-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/20250906/202509062218.Mo9Wsmcd-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/202509062218.Mo9Wsmcd-lkp@intel.com/
All errors (new ones prefixed by >>):
>> error[E0308]: mismatched types
--> rust/kernel/devres.rs:154:66
|
154 | bindings::devm_add_action(dev.as_raw(), Some(callback), inner.cast())
| ---- ^^^^^^^^ expected fn pointer, found `&mut unsafe extern "C" fn(*mut c_void)`
| |
| arguments to this enum variant are incorrect
|
= note: expected fn pointer `unsafe extern "C" fn(_)`
found mutable reference `&mut unsafe extern "C" fn(_)`
help: the type constructed contains `&mut unsafe extern "C" fn(*mut ffi::c_void)` due to the type of the argument passed
--> rust/kernel/devres.rs:154:61
|
154 | bindings::devm_add_action(dev.as_raw(), Some(callback), inner.cast())
| ^^^^^--------^
| |
| this argument influences the type of `Some`
note: tuple variant defined here
--> /opt/cross/rustc-1.88.0-bindgen-0.72.0/rustup/toolchains/1.88.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/option.rs:597:5
|
597 | Some(#[stable(feature = "rust1", since = "1.0.0")] T),
| ^^^^
help: consider dereferencing the borrow
|
154 | bindings::devm_add_action(dev.as_raw(), Some(*callback), inner.cast())
| +
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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