On 2021/7/5 22:10, kernel test robot wrote:

Hi Kefeng,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on next-20210701]

url:    https://github.com/0day-ci/linux/commits/Kefeng-Wang/arm64-support-page-mapping-percpu-first-chunk-allocator/20210705-190907
base:    fb0ca446157a86b75502c1636b0d81e642fe6bf1
config: i386-randconfig-a015-20210705 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
         # https://github.com/0day-ci/linux/commit/5f6b5a402ed3e390563ddbddf12973470fd4886d
         git remote add linux-review https://github.com/0day-ci/linux
         git fetch --no-tags linux-review Kefeng-Wang/arm64-support-page-mapping-percpu-first-chunk-allocator/20210705-190907
         git checkout 5f6b5a402ed3e390563ddbddf12973470fd4886d
         # save the attached .config to linux build tree
         make W=1 ARCH=i386

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

All errors (new ones prefixed by >>):

    mm/vmalloc.c: In function 'vm_area_register_early':

quoted

quoted

mm/vmalloc.c:2252:2: error: implicit declaration of function 'kasan_populate_early_vm_area_shadow' [-Werror=implicit-function-declaration]

should add  a stub function when KASAN is not enabled, thanks.

     2252 |  kasan_populate_early_vm_area_shadow(vm->addr, vm->size);
          |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    cc1: some warnings being treated as errors


vim +/kasan_populate_early_vm_area_shadow +2252 mm/vmalloc.c

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