[esmil:visionfive 4/54] mm/kasan/shadow.c:42:7: warning: no previous prototype for 'memset'

[kernel test robot]

tree:   https://github.com/esmil/linux visionfive
head:   68fe13e37af4c8331cdd40841353c9725cb65925
commit: 20157c7f08403f9a7cbaef427717ce571387416c [4/54] riscv: optimized memset
config: riscv-randconfig-c003-20220422 (https://download.01.org/0day-ci/archive/20220423/202204230354.4aerM2gz-lkp@xxxxxxxxx/config)
compiler: riscv64-linux-gcc (GCC) 11.2.0
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
        # https://github.com/esmil/linux/commit/20157c7f08403f9a7cbaef427717ce571387416c
        git remote add esmil https://github.com/esmil/linux
        git fetch --no-tags esmil visionfive
        git checkout 20157c7f08403f9a7cbaef427717ce571387416c
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash mm/kasan/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> mm/kasan/shadow.c:42:7: warning: no previous prototype for 'memset' [-Wmissing-prototypes]
      42 | void *memset(void *addr, int c, size_t len)
         |       ^~~~~~
   mm/kasan/shadow.c:63:7: warning: no previous prototype for 'memcpy' [-Wmissing-prototypes]
      63 | void *memcpy(void *dest, const void *src, size_t len)
         |       ^~~~~~


vim +/memset +42 mm/kasan/shadow.c

bb359dbcb70085 Andrey Konovalov 2020-12-22  40  
bb359dbcb70085 Andrey Konovalov 2020-12-22  41  #undef memset
bb359dbcb70085 Andrey Konovalov 2020-12-22 @42  void *memset(void *addr, int c, size_t len)
bb359dbcb70085 Andrey Konovalov 2020-12-22  43  {
f00748bfa0246c Andrey Konovalov 2021-02-24  44  	if (!kasan_check_range((unsigned long)addr, len, true, _RET_IP_))
bb359dbcb70085 Andrey Konovalov 2020-12-22  45  		return NULL;
bb359dbcb70085 Andrey Konovalov 2020-12-22  46  
bb359dbcb70085 Andrey Konovalov 2020-12-22  47  	return __memset(addr, c, len);
bb359dbcb70085 Andrey Konovalov 2020-12-22  48  }
bb359dbcb70085 Andrey Konovalov 2020-12-22  49  

:::::: The code at line 42 was first introduced by commit
:::::: bb359dbcb70085a63e8bdbf14837a900750f0cf7 kasan: split out shadow.c from common.c

:::::: TO: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>

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