tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git sched/core head: e337f389dc4d3748ba4342bd2d1c2133346b8691 commit: 92318ca36a5876d444849ea850534488e843f077 [2/4] sched/hotplug: Ensure only per-cpu kthreads run during hotplug config: arm-randconfig-r002-20200914 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project b2c32c90bab09a6e2c1f370429db26017a182143) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi git checkout 92318ca36a5876d444849ea850534488e843f077 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm 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 >>): In file included from kernel//sched/core.c:13: kernel//sched/sched.h:1225:20: error: no member named 'balance_callback' in 'struct rq' SCHED_WARN_ON(rq->balance_callback); ~~ ^ kernel//sched/sched.h:82:37: note: expanded from macro 'SCHED_WARN_ON' # define SCHED_WARN_ON(x) WARN_ONCE(x, #x) ^ include/asm-generic/bug.h:157:27: note: expanded from macro 'WARN_ONCE' int __ret_warn_once = !!(condition); \ ^~~~~~~~~ if (unlikely(rq->balance_flags)) { ~~ ^ include/linux/compiler.h:48:41: note: expanded from macro 'unlikely' # define unlikely(x) (__branch_check__(x, 0, __builtin_constant_p(x))) ^ include/linux/compiler.h:33:34: note: expanded from macro '__branch_check__' ______r = __builtin_expect(!!(x), expect); \ ^ if (unlikely(rq->balance_flags)) { ~~ ^ include/linux/compiler.h:48:68: note: expanded from macro 'unlikely' # define unlikely(x) (__branch_check__(x, 0, __builtin_constant_p(x))) ^ include/linux/compiler.h:35:19: note: expanded from macro '__branch_check__' expect, is_constant); \ ^~~~~~~~~~~ kernel//sched/core.c:3590:13: error: no member named 'balance_flags' in 'struct rq' !(rq->balance_flags & BALANCE_PUSH) || ~~ ^ !(rq->balance_flags & BALANCE_PUSH) || ^ 5 errors generated. # https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/commit/?... git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git git fetch --no-tags peterz-queue sched/core git checkout 92318ca36a5876d444849ea850534488e843f077 vim +3584 kernel//sched/core.c 3575 3576 static inline void finish_lock_switch(struct rq *rq) 3577 { 3578 /* 3579 * If we are tracking spinlock dependencies then we have to 3580 * fix up the runqueue lock - which gets 'carried over' from 3581 * prev into current: 3582 */ 3583 spin_acquire(&rq->lock.dep_map, 0, 0, _THIS_IP_); 3585 /* 3586 * Run the balance_callbacks, except on hotplug 3587 * when we need to push the current task away. 3588 */ 3589 if (!IS_ENABLED(CONFIG_HOTPLUG_CPU) || 3591 !balance_push(rq)) 3592 __balance_callbacks(rq); 3593 } 3594 raw_spin_unlock_irq(&rq->lock); 3595 } 3596 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org