Hi KP, I love your patch! Perhaps something to improve: [auto build test WARNING on bpf-next/master] url: https://github.com/0day-ci/linux/commits/KP-Singh/Implement-task_local_storage/20201028-010549 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master config: i386-randconfig-s002-20201031 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-68-g49c98aa3-dirty # https://github.com/0day-ci/linux/commit/238fab90058acf3437ecf912b49b4fc11249fdef git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review KP-Singh/Implement-task_local_storage/20201028-010549 git checkout 238fab90058acf3437ecf912b49b4fc11249fdef # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot "sparse warnings: (new ones prefixed by >>)" >> kernel/trace/bpf_trace.c:1032:29: sparse: sparse: symbol 'bpf_get_current_task_btf_proto' was not declared. Should it be static? Please review and possibly fold the followup patch. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org