tree:   https://android.googlesource.com/kernel/goldfish android-3.18
head:   db3f9e7a07d7927ef7582d9da6e9f1035ac67eb8
commit: b60661ebd19de261e23db7265badd8ba19aa3714 [215/443] mm/page_alloc.c: calculate 'available' memory in a separate function
config: parisc-randconfig-r023-20210622 (attached as .config)
compiler: hppa64-linux-gcc (GCC) 5.5.0
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
        git remote add android-goldfish https://android.googlesource.com/kernel/goldfish
        git fetch --no-tags android-goldfish android-3.18
        git checkout b60661ebd19de261e23db7265badd8ba19aa3714
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-5.5.0 make.cross ARCH=parisc 

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 >>):

>> WARNING: mm/built-in.o(.data+0x470): Section mismatch in reference from the variable .L305 to the function .init.text:__alloc_bootmem_node_nopanic()
   The variable .L305 references
   the function __init __alloc_bootmem_node_nopanic()
   If the reference is valid then annotate the
   variable with or __refdata (see linux/init.h) or name the variable:
   

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org