tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 3b85b9b39960c08f29fa91b8d984d055dde6017e commit: fc54a4f15988e228cf88f888483e985c5f35031e [12780/13853] um: prevent user code in modules config: um-allmodconfig (https://download.01.org/0day-ci/archive/20230425/202304250419.YtCLtUhG-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-8) 11.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=fc54a4f15988e228cf88f888483e985c5f35031e git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout fc54a4f15988e228cf88f888483e985c5f35031e # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=um olddefconfig make W=1 O=build_dir ARCH=um SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202304250419.YtCLtUhG-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> arch/um/drivers/harddog_user.c:6:10: fatal error: stdio.h: No such file or directory 6 | #include <stdio.h> | ^~~~~~~~~ compilation terminated. vim +6 arch/um/drivers/harddog_user.c ^1da177e4c3f41 Linus Torvalds 2005-04-16 @6 #include <stdio.h> ^1da177e4c3f41 Linus Torvalds 2005-04-16 7 #include <unistd.h> ^1da177e4c3f41 Linus Torvalds 2005-04-16 8 #include <errno.h> 37185b33240870 Al Viro 2012-10-08 9 #include <os.h> ^1da177e4c3f41 Linus Torvalds 2005-04-16 10 :::::: The code at line 6 was first introduced by commit :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 :::::: TO: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests