[kbuild-all] Error: failed to link '/no_alu32/linked_vars1.o': Unknown error -2 (-2)

Hi Andrii, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 0c18f29aae7ce3dadd26d8ee3505d07cc982df75 commit: 14f1aae17ee13d08315873d4b68d573e91df892f selftests/bpf: Add global variables linking selftest date: 9 weeks ago config: x86_64-rhel-8.3-kselftests (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/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 14f1aae17ee13d08315873d4b68d573e91df892f # save the attached .config to linux build tree make W=1 ARCH=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 >>): libbpf: failed to find BTF info for global/extern symbol 'input_rodata_weak' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org