tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 5d02ef4b57f6e7d4dcba14d40cf05373a146a605 commit: 8165da98aa7b69bd9f374a75467c06e5e232d15b [4752/5235] kcsan: test: Add test cases for memory barrier instrumentation config: s390-randconfig-r023-20211206 (https://download.01.org/0day-ci/archive/20211207/202112070117.78ld7W01-lkp@xxxxxxxxx/config) compiler: s390-linux-gcc (GCC) 11.2.0 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 # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=8165da98aa7b69bd9f374a75467c06e5e232d15b git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 8165da98aa7b69bd9f374a75467c06e5e232d15b # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=s390 SHELL=/bin/bash kernel/kcsan/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): kernel/kcsan/kcsan_test.c: In function 'test_barrier_nothreads': >> kernel/kcsan/kcsan_test.c:592:35: error: implicit declaration of function 'clear_bit_unlock_is_negative_byte' [-Werror=implicit-function-declaration] 592 | KCSAN_EXPECT_READ_BARRIER(clear_bit_unlock_is_negative_byte(0, &test_var), true); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ kernel/kcsan/kcsan_test.c:537:17: note: in definition of macro '__KCSAN_EXPECT_BARRIER' 537 | barrier; \ | ^~~~~~~ kernel/kcsan/kcsan_test.c:592:9: note: in expansion of macro 'KCSAN_EXPECT_READ_BARRIER' 592 | KCSAN_EXPECT_READ_BARRIER(clear_bit_unlock_is_negative_byte(0, &test_var), true); | ^~~~~~~~~~~~~~~~~~~~~~~~~ kernel/kcsan/kcsan_test.c: In function 'test_atomic_builtins': kernel/kcsan/kcsan_test.c:1233:17: warning: 'atomic_thread_fence' is not supported with '-fsanitize=thread' [-Wtsan] 1233 | __atomic_thread_fence(__ATOMIC_SEQ_CST); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/clear_bit_unlock_is_negative_byte +592 kernel/kcsan/kcsan_test.c 545 546 /* Force creating a valid entry in reorder_access first. */ 547 test_var = 0; 548 while (test_var++ < 1000000 && reorder_access->size != sizeof(test_var)) 549 __kcsan_check_read(&test_var, sizeof(test_var)); 550 KUNIT_ASSERT_EQ(test, reorder_access->size, sizeof(test_var)); 551 552 kcsan_nestable_atomic_begin(); /* No watchpoints in called functions. */ 553 554 KCSAN_EXPECT_READ_BARRIER(mb(), true); 555 KCSAN_EXPECT_READ_BARRIER(wmb(), false); 556 KCSAN_EXPECT_READ_BARRIER(rmb(), true); 557 KCSAN_EXPECT_READ_BARRIER(smp_mb(), true); 558 KCSAN_EXPECT_READ_BARRIER(smp_wmb(), false); 559 KCSAN_EXPECT_READ_BARRIER(smp_rmb(), true); 560 KCSAN_EXPECT_READ_BARRIER(dma_wmb(), false); 561 KCSAN_EXPECT_READ_BARRIER(dma_rmb(), true); 562 KCSAN_EXPECT_READ_BARRIER(smp_mb__before_atomic(), true); 563 KCSAN_EXPECT_READ_BARRIER(smp_mb__after_atomic(), true); 564 KCSAN_EXPECT_READ_BARRIER(smp_mb__after_spinlock(), true); 565 KCSAN_EXPECT_READ_BARRIER(smp_store_mb(test_var, 0), true); 566 KCSAN_EXPECT_READ_BARRIER(smp_load_acquire(&test_var), false); 567 KCSAN_EXPECT_READ_BARRIER(smp_store_release(&test_var, 0), true); 568 KCSAN_EXPECT_READ_BARRIER(xchg(&test_var, 0), true); 569 KCSAN_EXPECT_READ_BARRIER(xchg_release(&test_var, 0), true); 570 KCSAN_EXPECT_READ_BARRIER(xchg_relaxed(&test_var, 0), false); 571 KCSAN_EXPECT_READ_BARRIER(cmpxchg(&test_var, 0, 0), true); 572 KCSAN_EXPECT_READ_BARRIER(cmpxchg_release(&test_var, 0, 0), true); 573 KCSAN_EXPECT_READ_BARRIER(cmpxchg_relaxed(&test_var, 0, 0), false); 574 KCSAN_EXPECT_READ_BARRIER(atomic_read(&dummy), false); 575 KCSAN_EXPECT_READ_BARRIER(atomic_read_acquire(&dummy), false); 576 KCSAN_EXPECT_READ_BARRIER(atomic_set(&dummy, 0), false); 577 KCSAN_EXPECT_READ_BARRIER(atomic_set_release(&dummy, 0), true); 578 KCSAN_EXPECT_READ_BARRIER(atomic_add(1, &dummy), false); 579 KCSAN_EXPECT_READ_BARRIER(atomic_add_return(1, &dummy), true); 580 KCSAN_EXPECT_READ_BARRIER(atomic_add_return_acquire(1, &dummy), false); 581 KCSAN_EXPECT_READ_BARRIER(atomic_add_return_release(1, &dummy), true); 582 KCSAN_EXPECT_READ_BARRIER(atomic_add_return_relaxed(1, &dummy), false); 583 KCSAN_EXPECT_READ_BARRIER(atomic_fetch_add(1, &dummy), true); 584 KCSAN_EXPECT_READ_BARRIER(atomic_fetch_add_acquire(1, &dummy), false); 585 KCSAN_EXPECT_READ_BARRIER(atomic_fetch_add_release(1, &dummy), true); 586 KCSAN_EXPECT_READ_BARRIER(atomic_fetch_add_relaxed(1, &dummy), false); 587 KCSAN_EXPECT_READ_BARRIER(test_and_set_bit(0, &test_var), true); 588 KCSAN_EXPECT_READ_BARRIER(test_and_clear_bit(0, &test_var), true); 589 KCSAN_EXPECT_READ_BARRIER(test_and_change_bit(0, &test_var), true); 590 KCSAN_EXPECT_READ_BARRIER(clear_bit_unlock(0, &test_var), true); 591 KCSAN_EXPECT_READ_BARRIER(__clear_bit_unlock(0, &test_var), true); > 592 KCSAN_EXPECT_READ_BARRIER(clear_bit_unlock_is_negative_byte(0, &test_var), true); 593 KCSAN_EXPECT_READ_BARRIER(arch_spin_lock(&arch_spinlock), false); 594 KCSAN_EXPECT_READ_BARRIER(arch_spin_unlock(&arch_spinlock), true); 595 KCSAN_EXPECT_READ_BARRIER(spin_lock(&spinlock), false); 596 KCSAN_EXPECT_READ_BARRIER(spin_unlock(&spinlock), true); 597 KCSAN_EXPECT_READ_BARRIER(mutex_lock(&mutex), false); 598 KCSAN_EXPECT_READ_BARRIER(mutex_unlock(&mutex), true); 599 600 KCSAN_EXPECT_WRITE_BARRIER(mb(), true); 601 KCSAN_EXPECT_WRITE_BARRIER(wmb(), true); 602 KCSAN_EXPECT_WRITE_BARRIER(rmb(), false); 603 KCSAN_EXPECT_WRITE_BARRIER(smp_mb(), true); 604 KCSAN_EXPECT_WRITE_BARRIER(smp_wmb(), true); 605 KCSAN_EXPECT_WRITE_BARRIER(smp_rmb(), false); 606 KCSAN_EXPECT_WRITE_BARRIER(dma_wmb(), true); 607 KCSAN_EXPECT_WRITE_BARRIER(dma_rmb(), false); 608 KCSAN_EXPECT_WRITE_BARRIER(smp_mb__before_atomic(), true); 609 KCSAN_EXPECT_WRITE_BARRIER(smp_mb__after_atomic(), true); 610 KCSAN_EXPECT_WRITE_BARRIER(smp_mb__after_spinlock(), true); 611 KCSAN_EXPECT_WRITE_BARRIER(smp_store_mb(test_var, 0), true); 612 KCSAN_EXPECT_WRITE_BARRIER(smp_load_acquire(&test_var), false); 613 KCSAN_EXPECT_WRITE_BARRIER(smp_store_release(&test_var, 0), true); 614 KCSAN_EXPECT_WRITE_BARRIER(xchg(&test_var, 0), true); 615 KCSAN_EXPECT_WRITE_BARRIER(xchg_release(&test_var, 0), true); 616 KCSAN_EXPECT_WRITE_BARRIER(xchg_relaxed(&test_var, 0), false); 617 KCSAN_EXPECT_WRITE_BARRIER(cmpxchg(&test_var, 0, 0), true); 618 KCSAN_EXPECT_WRITE_BARRIER(cmpxchg_release(&test_var, 0, 0), true); 619 KCSAN_EXPECT_WRITE_BARRIER(cmpxchg_relaxed(&test_var, 0, 0), false); 620 KCSAN_EXPECT_WRITE_BARRIER(atomic_read(&dummy), false); 621 KCSAN_EXPECT_WRITE_BARRIER(atomic_read_acquire(&dummy), false); 622 KCSAN_EXPECT_WRITE_BARRIER(atomic_set(&dummy, 0), false); 623 KCSAN_EXPECT_WRITE_BARRIER(atomic_set_release(&dummy, 0), true); 624 KCSAN_EXPECT_WRITE_BARRIER(atomic_add(1, &dummy), false); 625 KCSAN_EXPECT_WRITE_BARRIER(atomic_add_return(1, &dummy), true); 626 KCSAN_EXPECT_WRITE_BARRIER(atomic_add_return_acquire(1, &dummy), false); 627 KCSAN_EXPECT_WRITE_BARRIER(atomic_add_return_release(1, &dummy), true); 628 KCSAN_EXPECT_WRITE_BARRIER(atomic_add_return_relaxed(1, &dummy), false); 629 KCSAN_EXPECT_WRITE_BARRIER(atomic_fetch_add(1, &dummy), true); 630 KCSAN_EXPECT_WRITE_BARRIER(atomic_fetch_add_acquire(1, &dummy), false); 631 KCSAN_EXPECT_WRITE_BARRIER(atomic_fetch_add_release(1, &dummy), true); 632 KCSAN_EXPECT_WRITE_BARRIER(atomic_fetch_add_relaxed(1, &dummy), false); 633 KCSAN_EXPECT_WRITE_BARRIER(test_and_set_bit(0, &test_var), true); 634 KCSAN_EXPECT_WRITE_BARRIER(test_and_clear_bit(0, &test_var), true); 635 KCSAN_EXPECT_WRITE_BARRIER(test_and_change_bit(0, &test_var), true); 636 KCSAN_EXPECT_WRITE_BARRIER(clear_bit_unlock(0, &test_var), true); 637 KCSAN_EXPECT_WRITE_BARRIER(__clear_bit_unlock(0, &test_var), true); 638 KCSAN_EXPECT_WRITE_BARRIER(clear_bit_unlock_is_negative_byte(0, &test_var), true); 639 KCSAN_EXPECT_WRITE_BARRIER(arch_spin_lock(&arch_spinlock), false); 640 KCSAN_EXPECT_WRITE_BARRIER(arch_spin_unlock(&arch_spinlock), true); 641 KCSAN_EXPECT_WRITE_BARRIER(spin_lock(&spinlock), false); 642 KCSAN_EXPECT_WRITE_BARRIER(spin_unlock(&spinlock), true); 643 KCSAN_EXPECT_WRITE_BARRIER(mutex_lock(&mutex), false); 644 KCSAN_EXPECT_WRITE_BARRIER(mutex_unlock(&mutex), true); 645 646 KCSAN_EXPECT_RW_BARRIER(mb(), true); 647 KCSAN_EXPECT_RW_BARRIER(wmb(), true); 648 KCSAN_EXPECT_RW_BARRIER(rmb(), true); 649 KCSAN_EXPECT_RW_BARRIER(smp_mb(), true); 650 KCSAN_EXPECT_RW_BARRIER(smp_wmb(), true); 651 KCSAN_EXPECT_RW_BARRIER(smp_rmb(), true); 652 KCSAN_EXPECT_RW_BARRIER(dma_wmb(), true); 653 KCSAN_EXPECT_RW_BARRIER(dma_rmb(), true); 654 KCSAN_EXPECT_RW_BARRIER(smp_mb__before_atomic(), true); 655 KCSAN_EXPECT_RW_BARRIER(smp_mb__after_atomic(), true); 656 KCSAN_EXPECT_RW_BARRIER(smp_mb__after_spinlock(), true); 657 KCSAN_EXPECT_RW_BARRIER(smp_store_mb(test_var, 0), true); 658 KCSAN_EXPECT_RW_BARRIER(smp_load_acquire(&test_var), false); 659 KCSAN_EXPECT_RW_BARRIER(smp_store_release(&test_var, 0), true); 660 KCSAN_EXPECT_RW_BARRIER(xchg(&test_var, 0), true); 661 KCSAN_EXPECT_RW_BARRIER(xchg_release(&test_var, 0), true); 662 KCSAN_EXPECT_RW_BARRIER(xchg_relaxed(&test_var, 0), false); 663 KCSAN_EXPECT_RW_BARRIER(cmpxchg(&test_var, 0, 0), true); 664 KCSAN_EXPECT_RW_BARRIER(cmpxchg_release(&test_var, 0, 0), true); 665 KCSAN_EXPECT_RW_BARRIER(cmpxchg_relaxed(&test_var, 0, 0), false); 666 KCSAN_EXPECT_RW_BARRIER(atomic_read(&dummy), false); 667 KCSAN_EXPECT_RW_BARRIER(atomic_read_acquire(&dummy), false); 668 KCSAN_EXPECT_RW_BARRIER(atomic_set(&dummy, 0), false); 669 KCSAN_EXPECT_RW_BARRIER(atomic_set_release(&dummy, 0), true); 670 KCSAN_EXPECT_RW_BARRIER(atomic_add(1, &dummy), false); 671 KCSAN_EXPECT_RW_BARRIER(atomic_add_return(1, &dummy), true); 672 KCSAN_EXPECT_RW_BARRIER(atomic_add_return_acquire(1, &dummy), false); 673 KCSAN_EXPECT_RW_BARRIER(atomic_add_return_release(1, &dummy), true); 674 KCSAN_EXPECT_RW_BARRIER(atomic_add_return_relaxed(1, &dummy), false); 675 KCSAN_EXPECT_RW_BARRIER(atomic_fetch_add(1, &dummy), true); 676 KCSAN_EXPECT_RW_BARRIER(atomic_fetch_add_acquire(1, &dummy), false); 677 KCSAN_EXPECT_RW_BARRIER(atomic_fetch_add_release(1, &dummy), true); 678 KCSAN_EXPECT_RW_BARRIER(atomic_fetch_add_relaxed(1, &dummy), false); 679 KCSAN_EXPECT_RW_BARRIER(test_and_set_bit(0, &test_var), true); 680 KCSAN_EXPECT_RW_BARRIER(test_and_clear_bit(0, &test_var), true); 681 KCSAN_EXPECT_RW_BARRIER(test_and_change_bit(0, &test_var), true); 682 KCSAN_EXPECT_RW_BARRIER(clear_bit_unlock(0, &test_var), true); 683 KCSAN_EXPECT_RW_BARRIER(__clear_bit_unlock(0, &test_var), true); 684 KCSAN_EXPECT_RW_BARRIER(clear_bit_unlock_is_negative_byte(0, &test_var), true); 685 KCSAN_EXPECT_RW_BARRIER(arch_spin_lock(&arch_spinlock), false); 686 KCSAN_EXPECT_RW_BARRIER(arch_spin_unlock(&arch_spinlock), true); 687 KCSAN_EXPECT_RW_BARRIER(spin_lock(&spinlock), false); 688 KCSAN_EXPECT_RW_BARRIER(spin_unlock(&spinlock), true); 689 KCSAN_EXPECT_RW_BARRIER(mutex_lock(&mutex), false); 690 KCSAN_EXPECT_RW_BARRIER(mutex_unlock(&mutex), true); 691 692 kcsan_nestable_atomic_end(); 693 } 694 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
