tree: https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git queue-5.10 head: 25d69cebdec80e649877c85043f02daa53403c42 commit: 2cb8610b255a3205ce09aa77612a51394d908bae [46/73] rcu/nocb: Trigger self-IPI on late deferred wake up before user resume config: x86_64-randconfig-c022-20210318 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git/c... git remote add sashal-linux-stable https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git git fetch --no-tags sashal-linux-stable queue-5.10 git checkout 2cb8610b255a3205ce09aa77612a51394d908bae # save the attached .config to linux build tree make W=1 ARCH=x86_64 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 >>): 682 | IRQ_WORK_INIT(late_wakeup_func); | ^~~~~~~~~~~~~ | IRQ_WORK_VECTOR cc1: some warnings being treated as errors vim +682 kernel/rcu/tree.c 680 681 static DEFINE_PER_CPU(struct irq_work, late_wakeup_work) = 683 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org