tree: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git io_uring-worker head: 57ea9801528571943b503bbe9b70a9504793d90e commit: 276f31457f375639fd79c9eaf975593e750cd7f2 [10/17] io-wq: fork worker threads from original task config: x86_64-randconfig-s022-20210216 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-215-g0fb77bb6-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/com... git remote add block https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git git fetch --no-tags block io_uring-worker git checkout 276f31457f375639fd79c9eaf975593e750cd7f2 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' 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 >>): fs/io-wq.c: In function 'task_thread': 499 | set_cpus_allowed_common(current, cpumask_of_node(wqe->node), 0); | ^~~~~~~~~~~~~~~~~~~~~~~ | set_cpus_allowed_ptr cc1: some warnings being treated as errors vim +499 fs/io-wq.c 485 486 static int task_thread(void *data, int index) 487 { 488 struct io_worker *worker = data; 489 struct io_wqe *wqe = worker->wqe; 490 struct io_wqe_acct *acct = &wqe->acct[index]; 491 struct io_wq *wq = wqe->wq; 492 unsigned long flags; 493 494 current->flags &= ~PF_KTHREAD; 495 current->pf_io_worker = worker; 496 worker->task = current; 497 498 raw_spin_lock_irqsave(&current->pi_lock, flags); 500 current->flags |= PF_NO_SETAFFINITY; 501 raw_spin_unlock_irqrestore(&current->pi_lock, flags); 502 503 raw_spin_lock_irq(&wqe->lock); 504 hlist_nulls_add_head_rcu(&worker->nulls_node, &wqe->free_list); 505 list_add_tail_rcu(&worker->all_list, &wqe->all_list); 506 worker->flags |= IO_WORKER_F_FREE; 507 if (index == IO_WQ_ACCT_BOUND) 508 worker->flags |= IO_WORKER_F_BOUND; 509 if (!acct->nr_workers && (worker->flags & IO_WORKER_F_BOUND)) 510 worker->flags |= IO_WORKER_F_FIXED; 511 acct->nr_workers++; 512 raw_spin_unlock_irq(&wqe->lock); 513 514 if (index == IO_WQ_ACCT_UNBOUND) 515 atomic_inc(&wq->user->processes); 516 517 io_wqe_worker(data); 518 do_exit(0); 519 } 520 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org