Hi Tony, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on net-next/master] url: https://github.com/0day-ci/linux/commits/Tony-Lu/net-smc-Spread-workload-... base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 8aaaf2f3af2ae212428f4db1af34214225f5cec3 config: x86_64-randconfig-a015 (https://download.01.org/0day-ci/archive/20220114/202201141735.QH2hx4ss-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/5c1f27f3fde941bdde57fcae8606932f2... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Tony-Lu/net-smc-Spread-workload-over-multiple-cores/20220114-134957 git checkout 5c1f27f3fde941bdde57fcae8606932f245b6759 # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): The function smc_sysctl_exit() references the variable __initdata smc_sysctl_ops. This is often because smc_sysctl_exit lacks a __initdata annotation or the annotation of smc_sysctl_ops is wrong. -- 73 | int __init smc_sysctl_init(void) | ^~~~~~~~~~~~~~~ 78 | void smc_sysctl_exit(void) | ^~~~~~~~~~~~~~~ --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org