tree: https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-5.6.y-rt-rebase head: be0ee11d10b24b74d194786bbfc30c754157fbe8 commit: fbcff84f67429630c8be64ac4dac81eed649d6df [198/256] irqwork: push most work into softirq context config: x86_64-randconfig-s1-20200403 (attached as .config) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 reproduce: git checkout fbcff84f67429630c8be64ac4dac81eed649d6df # save the attached .config to linux build tree make ARCH=x86_64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): static DEFINE_PER_CPU(struct irq_work, nohz_full_kick_work) = { ^ vim +246 kernel/time/tick-sched.c 76c24fb054b52b3 Frederic Weisbecker 2013-04-18 245 76c24fb054b52b3 Frederic Weisbecker 2013-04-18 @246 static DEFINE_PER_CPU(struct irq_work, nohz_full_kick_work) = { d027d45d8a17a41 Frederic Weisbecker 2015-06-07 247 .func = nohz_full_kick_func, fbcff84f6742963 Sebastian Andrzej Siewior 2015-06-23 248 .flags = IRQ_WORK_HARD_IRQ, 76c24fb054b52b3 Frederic Weisbecker 2013-04-18 249 }; 76c24fb054b52b3 Frederic Weisbecker 2013-04-18 250 :::::: The code at line 246 was first introduced by commit :::::: 76c24fb054b52b34af4dcde589cbb9e2b98fc74c nohz: New APIs to re-evaluate the tick on full dynticks CPUs :::::: TO: Frederic Weisbecker <fweisbec(a)gmail.com&gt; :::::: CC: Frederic Weisbecker <fweisbec(a)gmail.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org