Hi SeongJae, FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: f1fcbaa18b28dec10281551dfe6ed3a3ed80e3d6 commit: a101482421a318369eef2d0e03f2fcb40a47abad tools/Makefile: do missed s/vm/mm/ date: 4 weeks ago compiler: gcc-11 (Debian 11.3.0-12) 11.3.0 reproduce: # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a101482421a318369eef2d0e03f2fcb40a47abad git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout a101482421a318369eef2d0e03f2fcb40a47abad make O=/tmp/kselftest headers make O=/tmp/kselftest -C tools/testing/selftests If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot | Link: https://lore.kernel.org/oe-kbuild-all/202305170015.lJFRWgK0-lkp@intel.com/ All errors (new ones prefixed by >>): make[3]: warning: jobserver unavailable: using -j1. Add '+' to parent make rule. >> /usr/bin/ld: cannot find ../lib/api/libapi.a: No such file or directory >> collect2: error: ld returned 1 exit status make[2]: *** [Makefile:22: page_owner_sort] Error 1 make[2]: *** Waiting for unfinished jobs.... >> /usr/bin/ld: cannot find ../lib/api/libapi.a: No such file or directory >> collect2: error: ld returned 1 exit status make[2]: *** [Makefile:22: page-types] Error 1 >> /usr/bin/ld: cannot find ../lib/api/libapi.a: No such file or directory >> collect2: error: ld returned 1 exit status make[2]: *** [Makefile:22: slabinfo] Error 1 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests