tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2020.09.07a head: cccf684a1da846c3ff830d553bc4cf97bf779f48 commit: cccf684a1da846c3ff830d553bc4cf97bf779f48 [23/23] rcu-tasks: Mass of debug and fixes config: x86_64-randconfig-m001-20200911 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; smatch warnings: kernel/rcu/rcuscale.c:514 rcu_scale_cleanup() warn: inconsistent indenting kernel/rcu/tasks.h:1245 show_rcu_tasks_trace_gp_kthread() warn: inconsistent indenting # https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git/com... git remote add rcu https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git git fetch --no-tags rcu dev.2020.09.07a git checkout cccf684a1da846c3ff830d553bc4cf97bf779f48 vim +514 kernel/rcu/rcuscale.c 504 505 static void 506 rcu_scale_cleanup(void) 507 { 508 int i; 509 int j; 510 int ngps = 0; 511 u64 *wdp; 512 u64 *wdpp; 513 515 516 /* 517 * Would like warning at start, but everything is expedited 518 * during the mid-boot phase, so have to wait till the end. 519 */ 520 if (rcu_gp_is_expedited() && !rcu_gp_is_normal() && !gp_exp) 521 VERBOSE_SCALEOUT_ERRSTRING("All grace periods expedited, no normal ones to measure!"); 522 if (rcu_gp_is_normal() && gp_exp) 523 VERBOSE_SCALEOUT_ERRSTRING("All grace periods normal, no expedited ones to measure!"); 524 if (gp_exp && gp_async) 525 VERBOSE_SCALEOUT_ERRSTRING("No expedited async GPs, so went with async!"); 526 527 if (torture_cleanup_begin()) 528 return; 529 if (!cur_ops) { 530 torture_cleanup_end(); 531 return; 532 } 533 534 if (reader_tasks) { 535 for (i = 0; i < nrealreaders; i++) 536 torture_stop_kthread(rcu_scale_reader, 537 reader_tasks[i]); 538 kfree(reader_tasks); 539 } 540 541 if (writer_tasks) { 542 for (i = 0; i < nrealwriters; i++) { 543 torture_stop_kthread(rcu_scale_writer, 544 writer_tasks[i]); 545 if (!writer_n_durations) 546 continue; 547 j = writer_n_durations[i]; 548 pr_alert("%s%s writer %d gps: %d\n", 549 scale_type, SCALE_FLAG, i, j); 550 ngps += j; 551 } 552 pr_alert("%s%s start: %llu end: %llu duration: %llu gps: %d batches: %ld\n", 553 scale_type, SCALE_FLAG, 554 t_rcu_scale_writer_started, t_rcu_scale_writer_finished, 555 t_rcu_scale_writer_finished - 556 t_rcu_scale_writer_started, 557 ngps, 558 rcuscale_seq_diff(b_rcu_gp_test_finished, 559 b_rcu_gp_test_started)); 560 for (i = 0; i < nrealwriters; i++) { 561 if (!writer_durations) 562 break; 563 if (!writer_n_durations) 564 continue; 565 wdpp = writer_durations[i]; 566 if (!wdpp) 567 continue; 568 for (j = 0; j <= writer_n_durations[i]; j++) { 569 wdp = &wdpp[j]; 570 pr_alert("%s%s %4d writer-duration: %5d %llu\n", 571 scale_type, SCALE_FLAG, 572 i, j, *wdp); 573 if (j % 100 == 0) 574 schedule_timeout_uninterruptible(1); 575 } 576 kfree(writer_durations[i]); 577 } 578 kfree(writer_tasks); 579 kfree(writer_durations); 580 kfree(writer_n_durations); 581 } 582 583 /* Do torture-type-specific cleanup operations. */ 584 if (cur_ops->cleanup != NULL) 585 cur_ops->cleanup(); 586 587 torture_cleanup_end(); 588 } 589 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org