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Message-ID: <202506191023.smOZ1Mpy-lkp@intel.com>
Date: Thu, 19 Jun 2025 11:15:37 +0800
From: kernel test robot <lkp@...el.com>
To: Oliver Mangold <oliver.mangold@...me>, 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>,
Benno Lossin <lossin@...nel.org>,
Asahi Lina <lina+kernel@...hilina.net>
Cc: oe-kbuild-all@...ts.linux.dev, rust-for-linux@...r.kernel.org,
linux-kernel@...r.kernel.org, Oliver Mangold <oliver.mangold@...me>
Subject: Re: [PATCH v11 2/4] rust: Split `AlwaysRefCounted` into two traits
Hi Oliver,
kernel test robot noticed the following build errors:
[auto build test ERROR on e04c78d86a9699d136910cfc0bdcf01087e3267e]
url: https://github.com/intel-lab-lkp/linux/commits/Oliver-Mangold/rust-types-Add-Ownable-Owned-types/20250618-203524
base: e04c78d86a9699d136910cfc0bdcf01087e3267e
patch link: https://lore.kernel.org/r/20250618-unique-ref-v11-2-49eadcdc0aa6%40pm.me
patch subject: [PATCH v11 2/4] rust: Split `AlwaysRefCounted` into two traits
config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20250619/202506191023.smOZ1Mpy-lkp@intel.com/config)
compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
rustc: rustc 1.78.0 (9b00956e5 2024-04-29)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250619/202506191023.smOZ1Mpy-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/202506191023.smOZ1Mpy-lkp@intel.com/
All errors (new ones prefixed by >>):
PATH=/opt/cross/clang-18/bin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
INFO PATH=/opt/cross/rustc-1.78.0-bindgen-0.65.1/cargo/bin:/opt/cross/clang-18/bin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
/usr/bin/timeout -k 100 12h /usr/bin/make KCFLAGS= -Wno-error=return-type -Wreturn-type -funsigned-char -Wundef W=1 --keep-going LLVM=1 -j32 -C source O=/kbuild/obj/consumer/x86_64-rhel-9.4-rust ARCH=x86_64 SHELL=/bin/bash rustfmtcheck
make: Entering directory '/kbuild/src/consumer'
make[1]: Entering directory '/kbuild/obj/consumer/x86_64-rhel-9.4-rust'
>> Diff in rust/kernel/mm/mmput_async.rs at line 48:
}
}
-
// SAFETY: We do not implement `Ownable`, thus it is okay to can obtain an `ARef<MmWithUserAsync>`
// from a `&MmWithUserAsync`.
unsafe impl AlwaysRefCounted for MmWithUserAsync {}
>> Diff in rust/kernel/mm/mmput_async.rs at line 48:
}
}
-
// SAFETY: We do not implement `Ownable`, thus it is okay to can obtain an `ARef<MmWithUserAsync>`
// from a `&MmWithUserAsync`.
unsafe impl AlwaysRefCounted for MmWithUserAsync {}
>> Diff in rust/kernel/mm/mmput_async.rs at line 48:
}
}
-
// SAFETY: We do not implement `Ownable`, thus it is okay to can obtain an `ARef<MmWithUserAsync>`
// from a `&MmWithUserAsync`.
unsafe impl AlwaysRefCounted for MmWithUserAsync {}
make[2]: *** [Makefile:1825: rustfmt] Error 123
make[2]: Target 'rustfmtcheck' not remade because of errors.
make[1]: Leaving directory '/kbuild/obj/consumer/x86_64-rhel-9.4-rust'
make[1]: *** [Makefile:248: __sub-make] Error 2
make[1]: Target 'rustfmtcheck' not remade because of errors.
make: *** [Makefile:248: __sub-make] Error 2
make: Target 'rustfmtcheck' not remade because of errors.
make: Leaving directory '/kbuild/src/consumer'
--
>> error[E0277]: the trait bound `auxiliary::Device: types::RefCounted` is not satisfied
--> rust/kernel/device.rs:329:56
|
329 | impl ::core::convert::From<&$device<$src>> for $crate::types::ARef<$device> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `types::RefCounted` is not implemented for `auxiliary::Device`
|
::: rust/kernel/auxiliary.rs:250:1
|
250 | kernel::impl_device_context_into_aref!(Device);
| ---------------------------------------------- in this macro invocation
|
= help: the following other types implement trait `types::RefCounted`:
block::mq::request::Request<T>
cred::Credential
device::Device
fs::file::File
fs::file::LocalFile
mm::mmput_async::MmWithUserAsync
mm::Mm
mm::MmWithUser
and 4 others
note: required by a bound in `types::ARef`
--> rust/kernel/types.rs:478:20
|
478 | pub struct ARef<T: RefCounted> {
| ^^^^^^^^^^ required by this bound in `ARef`
= note: this error originates in the macro `::kernel::__impl_device_context_into_aref` which comes from the expansion of the macro `kernel::impl_device_context_into_aref` (in Nightly builds, run with -Z macro-backtrace for more info)
--
>> error[E0277]: the trait bound `auxiliary::Device: types::RefCounted` is not satisfied
--> rust/kernel/auxiliary.rs:253:48
|
253 | unsafe impl crate::types::AlwaysRefCounted for Device {
| ^^^^^^ the trait `types::RefCounted` is not implemented for `auxiliary::Device`
|
= help: the following other types implement trait `types::RefCounted`:
block::mq::request::Request<T>
cred::Credential
device::Device
fs::file::File
fs::file::LocalFile
mm::mmput_async::MmWithUserAsync
mm::Mm
mm::MmWithUser
and 4 others
note: required by a bound in `types::AlwaysRefCounted`
--> rust/kernel/types.rs:466:36
|
466 | pub unsafe trait AlwaysRefCounted: RefCounted {}
| ^^^^^^^^^^ required by this bound in `AlwaysRefCounted`
--
>> error[E0277]: the trait bound `auxiliary::Device: types::RefCounted` is not satisfied
--> rust/kernel/device.rs:330:45
|
330 | fn from(dev: &$device<$src>) -> Self {
| ^^^^ the trait `types::RefCounted` is not implemented for `auxiliary::Device`
|
::: rust/kernel/auxiliary.rs:250:1
|
250 | kernel::impl_device_context_into_aref!(Device);
| ---------------------------------------------- in this macro invocation
|
= help: the following other types implement trait `types::RefCounted`:
block::mq::request::Request<T>
cred::Credential
device::Device
fs::file::File
fs::file::LocalFile
mm::mmput_async::MmWithUserAsync
mm::Mm
mm::MmWithUser
and 4 others
note: required by a bound in `types::ARef`
--> rust/kernel/types.rs:478:20
|
478 | pub struct ARef<T: RefCounted> {
| ^^^^^^^^^^ required by this bound in `ARef`
= note: this error originates in the macro `::kernel::__impl_device_context_into_aref` which comes from the expansion of the macro `kernel::impl_device_context_into_aref` (in Nightly builds, run with -Z macro-backtrace for more info)
--
>> error[E0277]: the trait bound `auxiliary::Device: types::RefCounted` is not satisfied
--> rust/kernel/device.rs:331:17
|
331 | (&**dev).into()
| ^^^^^^^^^^^^^^^ the trait `types::RefCounted` is not implemented for `auxiliary::Device`
|
::: rust/kernel/auxiliary.rs:250:1
|
250 | kernel::impl_device_context_into_aref!(Device);
| ---------------------------------------------- in this macro invocation
|
= help: the following other types implement trait `types::RefCounted`:
block::mq::request::Request<T>
cred::Credential
device::Device
fs::file::File
fs::file::LocalFile
mm::mmput_async::MmWithUserAsync
mm::Mm
mm::MmWithUser
and 4 others
note: required by a bound in `types::ARef`
--> rust/kernel/types.rs:478:20
|
478 | pub struct ARef<T: RefCounted> {
| ^^^^^^^^^^ required by this bound in `ARef`
= note: this error originates in the macro `::kernel::__impl_device_context_into_aref` which comes from the expansion of the macro `kernel::impl_device_context_into_aref` (in Nightly builds, run with -Z macro-backtrace for more info)
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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