[kbuild-all] [kees:kspp/slub/static_key 10/11] xtensa-linux-ld: slub.c:undefined reference to `kmem_cache_debug_flags'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git kspp/slub/static_key head: 251bbce5b38a7a9e65ed438a95221be24605c591 commit: 36ea68a7c15469be06d1df0d5c7384abed9a2575 [10/11] mm: Expand CONFIG_SLAB_FREELIST_HARDENED to include SLAB and SLOB config: xtensa-defconfig (attached as .config) compiler: xtensa-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 git checkout 36ea68a7c15469be06d1df0d5c7384abed9a2575 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=xtensa If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org