tree: https://git.kernel.org/pub/scm/linux/kernel/git/colyli/linux-bcache.git nvdimm-meta head: eff89ef1681f077540f75b3561bb532573c44458 commit: a6537a7045a9cf64f5bbb3c77b863fb200e0d958 [1/16] bcache: add initial data structures for nvm pages config: i386-randconfig-a002-20210411 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/colyli/linux-bcache.git/c... git remote add bcache https://git.kernel.org/pub/scm/linux/kernel/git/colyli/linux-bcache.git git fetch --no-tags bcache nvdimm-meta git checkout a6537a7045a9cf64f5bbb3c77b863fb200e0d958 # save the attached .config to linux build tree make W=1 ARCH=i386 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 >>): In file included from <command-line>:32: 110 | #error "Non-64bit platform is not supported" | ^~~~~ --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org