tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   f88cd3fb9df228e5ce4e13ec3dbad671ddb2146e
commit: baec970aa5ba11099ad7a91773350c91fb2113f0 mips: Add N64 machine type
date:   4 months ago
config: mips-randconfig-p001-20210604 (attached as .config)
compiler: mips64-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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=baec970aa5ba11099ad7a91773350c91fb2113f0
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout baec970aa5ba11099ad7a91773350c91fb2113f0
        # 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 >>):

   mips64-linux-ld: arch/mips/boot/compressed/decompress.o: in function `LZ4_decompress_safe_withSmallPrefix':
   decompress.c:(.text+0xd0): undefined reference to `ftrace_likely_update'
>> mips64-linux-ld: decompress.c:(.text+0x140): undefined reference to `ftrace_likely_update'
   mips64-linux-ld: decompress.c:(.text+0x1bc): undefined reference to `ftrace_likely_update'
   mips64-linux-ld: decompress.c:(.text+0x2b8): undefined reference to `ftrace_likely_update'
   mips64-linux-ld: decompress.c:(.text+0x314): undefined reference to `ftrace_likely_update'
   mips64-linux-ld: arch/mips/boot/compressed/decompress.o:decompress.c:(.text+0x338): more undefined references to `ftrace_likely_update' follow

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