Build regressions were detected on multiple architectures (arm, arm64, riscv) with the Linux next-20250818 tag when building with Rust-enabled configurations (rust-gcc and rust-clang) from selftests/rust/config.

Duplicate definition of ARCH_KMALLOC_MINALIGN in Rust bindings is causing build failures across affected toolchains.

First seen on next-20250818 Good: next-20250815 Bad: next-20250818 and next-20250819

Regression Analysis: - New regression? yes - Reproducibility? yes

* arm, build - rustclang-lkftconfig-kselftest - rustgcc-lkftconfig-kselftest

* arm64, build - rustclang-lkftconfig-kselftest - rustgcc-lkftconfig-kselftest

* riscv, build - rustclang-nightly-lkftconfig-kselftest

Boot regression: next-20250818 arm arm64 riscv rust `ARCH_KMALLOC_MINALIGN` is defined multiple times

Reported-by: Linux Kernel Functional Testing lkft@linaro.org

## Build log error[E0428]: the name `ARCH_KMALLOC_MINALIGN` is defined multiple times --> /home/tuxbuild/.cache/tuxmake/builds/1/build/rust/bindings/bindings_generated.rs:125708:1 | 5305 | pub const ARCH_KMALLOC_MINALIGN: u32 = 8; | ----------------------------------------- previous definition of the value `ARCH_KMALLOC_MINALIGN` here ... 125708 | pub const ARCH_KMALLOC_MINALIGN: usize = 8; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `ARCH_KMALLOC_MINALIGN` redefined here | = note: `ARCH_KMALLOC_MINALIGN` must be defined only once in the value namespace of this module

error: aborting due to 1 previous error

Please refer the full build log information in the below links.

## Source * Kernel version: 6.17.0-rc2 * Git tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git * Git describe: next-20250818 * Git commit: 3ac864c2d9bb8608ee236e89bf561811613abfce * Architectures: arm arm64 riscv * Toolchains: rust-gcc-13, rust-clang-20 * Kconfigs: defconfig+rust

## Build * Build log: https://qa-reports.linaro.org/api/testruns/29578517/log_file/ * Build details 1: https://regressions.linaro.org/lkft/linux-next-master/next-20250818/build/ru... * Build details 2: https://regressions.linaro.org/lkft/linux-next-master/next-20250818/build/ru... * Build details 3: https://regressions.linaro.org/lkft/linux-next-master/next-20250818/build/ru... * Build plan: https://tuxapi.tuxsuite.com/v1/groups/linaro/projects/lkft/builds/31RcUoS2Aq... * Build link: https://storage.tuxsuite.com/public/linaro/lkft/builds/31RcUoS2AqZLljDCs480M... * Kernel config: https://storage.tuxsuite.com/public/linaro/lkft/builds/31RcUoS2AqZLljDCs480M...

-- Linaro LKFT https://lkft.linaro.org