[zen-kernel-zen-kernel:5.10/fixes 2/9] ERROR: modpost: "init_ipc_ns" undefined!

[zen-kernel-zen-kernel:5.10/fixes 2/9] ERROR: modpost: "init_ipc_ns" undefined!

[kernel test robot]

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tree:   https://github.com/zen-kernel/zen-kernel 5.10/fixes
head:   adc6822493b72123c39f285ca4e79cab8021b1f6
commit: a628884e152edd7dd987eb989ddc107a2e8af713 [2/9] android: Enable building ashmem and binder as modules
config: mips-allmodconfig (attached as .config)
compiler: mips-linux-gcc (GCC) 9.3.0
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/zen-kernel/zen-kernel/commit/a628884e152edd7dd987eb989ddc107a2e8af713
        git remote add zen-kernel-zen-kernel https://github.com/zen-kernel/zen-kernel
        git fetch --no-tags zen-kernel-zen-kernel 5.10/fixes
        git checkout a628884e152edd7dd987eb989ddc107a2e8af713
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips 

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

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

>> ERROR: modpost: "init_ipc_ns" [drivers/android/binder_linux.ko] undefined!
>> ERROR: modpost: "put_ipc_ns" [drivers/android/binder_linux.ko] undefined!

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

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