On Wed, Apr 27, 2022 at 6:37 AM kernel test robot <lkp@intel.com> wrote:
>
> Hi Alexander,
>
> I love your patch! Yet something to improve:
>
> [auto build test ERROR on tip/x86/core]
> [also build test ERROR on tip/x86/mm linus/master v5.18-rc4 next-20220426]
> [cannot apply to hnaz-mm/master]
> [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/intel-lab-lkp/linux/commits/Alexander-Potapenko/Add-KernelMemorySanitizer-infrastructure/20220427-004851
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 203d8919a9eda5d1bc68ac3cd7637588334c9dc1
> config: s390-randconfig-r034-20220425 (https://download.01.org/0day-ci/archive/20220427/202204271215.wfSd4UMp-lkp@intel.com/config)
> compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 1cddcfdc3c683b393df1a5c9063252eb60e52818)
> 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 s390 cross compiling tool for clang build
>         # apt-get install binutils-s390x-linux-gnu
>         # https://github.com/intel-lab-lkp/linux/commit/c30e163fc48e694440a08d8445bf06254e933bf1
>         git remote add linux-review https://github.com/intel-lab-lkp/linux
>         git fetch --no-tags linux-review Alexander-Potapenko/Add-KernelMemorySanitizer-infrastructure/20220427-004851
>         git checkout c30e163fc48e694440a08d8445bf06254e933bf1
>         # save the config file
>         mkdir build_dir && cp config build_dir/.config
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
>
> All errors (new ones prefixed by >>):
>
> >> arch/s390/lib/uaccess.c:84:3: error: call to undeclared function 'instrument_copy_from_user'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
>                    instrument_copy_from_user(to, from, n);
>                    ^
>    arch/s390/lib/uaccess.c:84:3: note: did you mean 'instrument_copy_to_user'?
>    include/linux/instrumented.h:116:1: note: 'instrument_copy_to_user' declared here
>    instrument_copy_to_user(void __user *to, const void *from, unsigned long n)
>    ^
>    1 error generated.
Will replace this occurrence of instrument_copy_to_user() in v4.