[ammarfaizi2-block:dhowells/linux-fs/netfs-maple 33/40] ERROR: modpost: "mas_walk" [fs/netfs/netfs.ko] undefined!

[kernel test robot]

tree:   https://github.com/ammarfaizi2/linux-block dhowells/linux-fs/netfs-maple
head:   674eea41fc70a740ff83ec590f9833f805852464
commit: 073b0ba90614945b31bccfede6e00102b7eb460e [33/40] netfs: Implement buffered writes through netfs_file_write_iter()
config: x86_64-randconfig-c001 (https://download.01.org/0day-ci/archive/20220405/202204051321.rd4HYoy6-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.2.0-19) 11.2.0
reproduce (this is a W=1 build):
        # https://github.com/ammarfaizi2/linux-block/commit/073b0ba90614945b31bccfede6e00102b7eb460e
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block dhowells/linux-fs/netfs-maple
        git checkout 073b0ba90614945b31bccfede6e00102b7eb460e
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

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

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "mas_walk" [fs/netfs/netfs.ko] undefined!
>> ERROR: modpost: "mas_destroy" [fs/netfs/netfs.ko] undefined!
>> ERROR: modpost: "mas_expected_entries" [fs/netfs/netfs.ko] undefined!
>> ERROR: modpost: "mas_store" [fs/netfs/netfs.ko] undefined!

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