tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 5d562c48a21eeb029a8fd3f18e1b31fd83660474 commit: 62f33fa228003a419a9484eed5133447a280387c [5267/13282] selftests/vm: use memfd for hugetlb-madvise test compiler: gcc-11 (Debian 11.3.0-8) 11.3.0 reproduce: # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=62f33fa228003a419a9484eed5133447a280387c 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 62f33fa228003a419a9484eed5133447a280387c 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 All warnings (new ones prefixed by >>): >> hugetlb-madvise.c:20: warning: "__USE_GNU" redefined 20 | #define __USE_GNU | In file included from /usr/include/x86_64-linux-gnu/bits/libc-header-start.h:33, from /usr/include/stdlib.h:26, from hugetlb-madvise.c:16: /usr/include/features.h:407: note: this is the location of the previous definition 407 | # define __USE_GNU 1 | -- 0-DAY CI Kernel Test Service https://01.org/lkp