Re: [RFC PATCH v2 3/3] mm/mempolicy: wire up syscall set_mempolicy_home_node

["Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>]

On 10/21/21 00:54, kernel test robot wrote:
> Hi "Aneesh,
> 
> [FYI, it's a private test report for your RFC patch.]
> [auto build test WARNING on arm64/for-next/core]
> [also build test WARNING on linus/master v5.15-rc6]
> [cannot apply to hnaz-mm/master tip/x86/asm next-20211020]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch]
> 
> url:    https://github.com/0day-ci/linux/commits/Aneesh-Kumar-K-V/mm-mempolicy-use-policy_node-helper-with-MPOL_PREFERRED_MANY/20211020-172721
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core
> config: arm64-randconfig-r033-20211019 (attached as .config)
> compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 9660563950aaed54020bfdf0be07e7096a9553e4)
> reproduce (this is a W=1 build):
>          wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>          chmod +x ~/bin/make.cross
>          # install arm64 cross compiling tool for clang build
>          # apt-get install binutils-aarch64-linux-gnu
>          # https://github.com/0day-ci/linux/commit/10f30e8157782f17ae682c2bbca95c226af3612a
>          git remote add linux-review https://github.com/0day-ci/linux
>          git fetch --no-tags linux-review Aneesh-Kumar-K-V/mm-mempolicy-use-policy_node-helper-with-MPOL_PREFERRED_MANY/20211020-172721
>          git checkout 10f30e8157782f17ae682c2bbca95c226af3612a
>          # save the attached .config to linux build tree
>          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm64
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
> 
> All warnings (new ones prefixed by >>):
> 
>             asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
>                                    ^
>     <scratch space>:60:1: note: expanded from here
>     __arm64_sys_process_madvise
>     ^
>     kernel/sys_ni.c:291:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
>     arch/arm64/include/asm/syscall_wrapper.h:76:13: note: expanded from macro 'COND_SYSCALL'
>             asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
>                        ^

Is this clang specific? I am not able to recreate this with gcc 10 cross 
compiling.

-aneesh