Hi Hans, [FYI, it's a private test report for your RFC patch.] [auto build test ERROR on bpf-next/master] url: https://github.com/0day-ci/linux/commits/Hans-Montero/bpf-Implement-share... base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master config: x86_64-rhel-8.3-kselftests (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-348-gf0e6938b-dirty # https://github.com/0day-ci/linux/commit/5ed30f1d061672ab17ac25df07cbdf3a3... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Hans-Montero/bpf-Implement-shared-persistent-fast-er-sk_storoage-mode/20210824-055438 git checkout 5ed30f1d061672ab17ac25df07cbdf3a332558cc # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash -C tools/testing/selftests/bpf install 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 >>): if (!fast_storage || fast_storage != sock->sk->bpf_shared_local_storage) ~~~~~~~~ ^ 1 error generated. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org