linux-kernel - [esmil:visionfive 2/50] arch/riscv/include/asm/string.h:25:31: error: redefinition of '_

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Date:   Wed, 6 Jul 2022 09:03:51 +0800
From:   kernel test robot <lkp@...el.com>
To:     Matteo Croce <mcroce@...rosoft.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Emil Renner Berthing <emil.renner.berthing@...onical.com>
Subject: [esmil:visionfive 2/50] arch/riscv/include/asm/string.h:25:31:
 error: redefinition of '__memcpy'

tree:   https://github.com/esmil/linux visionfive
head:   943858df470556d0b7f3b31fcc10931603f0f3cc
commit: 6a48862f530a593cadaab50ae4006b3a70a112e6 [2/50] riscv: optimized memcpy
config: riscv-allyesconfig (https://download.01.org/0day-ci/archive/20220706/202207060838.WP0TpRCc-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 11.3.0
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/6a48862f530a593cadaab50ae4006b3a70a112e6
        git remote add esmil https://github.com/esmil/linux
        git fetch --no-tags esmil visionfive
        git checkout 6a48862f530a593cadaab50ae4006b3a70a112e6
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   In file included from include/linux/string.h:20,
                    from include/linux/bitmap.h:11,
                    from include/linux/cpumask.h:12,
                    from include/linux/mm_types_task.h:14,
                    from include/linux/mm_types.h:5,
                    from include/linux/buildid.h:5,
                    from include/linux/module.h:14,
                    from arch/riscv/lib/string.c:11:
>> arch/riscv/include/asm/string.h:25:31: error: redefinition of '__memcpy'
      25 | #define memcpy(dst, src, len) __memcpy(dst, src, len)
         |                               ^~~~~~~~
   arch/riscv/lib/string.c:90:7: note: in expansion of macro 'memcpy'
      90 | void *memcpy(void *dest, const void *src, size_t count) __weak __alias(__memcpy);
         |       ^~~~~~
   arch/riscv/lib/string.c:31:7: note: previous definition of '__memcpy' with type 'void *(void *, const void *, size_t)' {aka 'void *(void *, const void *, long unsigned int)'}
      31 | void *__memcpy(void *dest, const void *src, size_t count)
         |       ^~~~~~~~


vim +/__memcpy +25 arch/riscv/include/asm/string.h

6a48862f530a59 Matteo Croce 2021-09-29  19  
04091d6c0535f6 Nylon Chen   2020-11-30  20  #define __HAVE_ARCH_MEMMOVE
04091d6c0535f6 Nylon Chen   2020-11-30  21  extern asmlinkage void *memmove(void *, const void *, size_t);
04091d6c0535f6 Nylon Chen   2020-11-30  22  extern asmlinkage void *__memmove(void *, const void *, size_t);
8ad8b72721d0f0 Nick Hu      2020-01-06  23  /* For those files which don't want to check by kasan. */
8ad8b72721d0f0 Nick Hu      2020-01-06  24  #if defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__)
8ad8b72721d0f0 Nick Hu      2020-01-06 @25  #define memcpy(dst, src, len) __memcpy(dst, src, len)
8ad8b72721d0f0 Nick Hu      2020-01-06  26  #define memset(s, c, n) __memset(s, c, n)
04091d6c0535f6 Nylon Chen   2020-11-30  27  #define memmove(dst, src, len) __memmove(dst, src, len)
9530141455c968 Kefeng Wang  2021-02-25  28  

:::::: The code at line 25 was first introduced by commit
:::::: 8ad8b72721d0f07fa02dbe71f901743f9c71c8e6 riscv: Add KASAN support

:::::: TO: Nick Hu <nickhu@...estech.com>
:::::: CC: Palmer Dabbelt <palmerdabbelt@...gle.com>

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp