[csky-linux:riscv_compat_v12 20/20] riscv64-linux-ld: arch/riscv/kernel/compat_syscall_table.o:undefined reference to `compat_sys_fadvise64_64'

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/c-sky/csky-linux riscv_compat_v12
head:   55a9982536831dca39b4334923e5446e870cdfaf
commit: 55a9982536831dca39b4334923e5446e870cdfaf [20/20] riscv: compat: Add COMPAT Kbuild skeletal support
config: riscv-randconfig-c004-20220405 (https://download.01.org/0day-ci/archive/20220406/202204060829.hZRXlFGY-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 11.2.0
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/c-sky/csky-linux/commit/55a9982536831dca39b4334923e5446e870cdfaf
        git remote add csky-linux https://github.com/c-sky/csky-linux
        git fetch --no-tags csky-linux riscv_compat_v12
        git checkout 55a9982536831dca39b4334923e5446e870cdfaf
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=riscv SHELL=/bin/bash

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 >>):

>> riscv64-linux-ld: arch/riscv/kernel/compat_syscall_table.o:(.rodata+0x6f8): undefined reference to `compat_sys_fadvise64_64'
   pahole: .tmp_vmlinux.btf: No such file or directory
   .btf.vmlinux.bin.o: file not recognized: file format not recognized

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