tree: https://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git um-orc-unwind head: 2706859f698a7e6042cfa59b1dd81040db1eeae0 commit: 2706859f698a7e6042cfa59b1dd81040db1eeae0 [1/1] try ARCH=um ORC unwinder config: um-x86_64_defconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): git checkout 2706859f698a7e6042cfa59b1dd81040db1eeae0 # save the attached .config to linux build tree make W=1 ARCH=um SUBARCH=x86_64 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 >>): 10 | #include <asm/insn.h> | ^~~~~~~~~~~~ compilation terminated. make[5]: *** [tools/build/Makefile.build:97: tools/objtool/arch/um/decode.o] Error 1 make[4]: *** [tools/build/Makefile.build:139: arch/um] Error 2 make[4]: *** Waiting for unfinished jobs.... make[3]: *** [Makefile:68: tools/objtool/objtool-in.o] Error 2 make[2]: *** [Makefile:68: objtool] Error 2 make[1]: *** [Makefile:1873: tools/objtool] Error 2 arch/x86/um/user-offsets.c:18:6: warning: no previous prototype for 'foo' [-Wmissing-prototypes] 18 | void foo(void) | ^~~ cc1: warning: arch/um/include/uapi: No such file or directory [-Wmissing-include-dirs] cc1: warning: arch/um/include/uapi: No such file or directory [-Wmissing-include-dirs] cc1: warning: arch/um/include/uapi: No such file or directory [-Wmissing-include-dirs] cc1: warning: arch/um/include/uapi: No such file or directory [-Wmissing-include-dirs] In file included from arch/um/kernel/asm-offsets.c:1: arch/x86/um/shared/sysdep/kernel-offsets.h:9:6: warning: no previous prototype for 'foo' [-Wmissing-prototypes] 9 | void foo(void) | ^~~ cc1: warning: arch/um/include/uapi: No such file or directory [-Wmissing-include-dirs] make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:185: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org