Hi Suren, FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant. tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 1c6f93977947dbba1fc4d250c4eb8a7d4cfdecf1 commit: 1e72a0774792199f0a39d6f2c1dc1cfa32fcffcd [13019/13166] mm: disable CONFIG_PER_VMA_LOCK by default until its fixed config: arm64-randconfig-r023-20230703 (https://download.01.org/0day-ci/archive/20230704/202307041730.YLC0ZwhK-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a) reproduce: (https://download.01.org/0day-ci/archive/20230704/202307041730.YLC0ZwhK-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202307041730.YLC0ZwhK-lkp@xxxxxxxxx/ Note: the linux-next/master HEAD 1c6f93977947dbba1fc4d250c4eb8a7d4cfdecf1 builds fine. It may have been fixed somewhere. All errors (new ones prefixed by >>): >> arch/arm64/mm/fault.c:624:2: error: use of undeclared identifier 'vma' 624 | vma = lock_mm_and_find_vma(mm, addr, regs); | ^ arch/arm64/mm/fault.c:625:16: error: use of undeclared identifier 'vma'; did you mean 'vmap'? 625 | if (unlikely(!vma)) { | ^~~ | vmap include/linux/compiler.h:77:42: note: expanded from macro 'unlikely' 77 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ include/linux/vmalloc.h:164:14: note: 'vmap' declared here 164 | extern void *vmap(struct page **pages, unsigned int count, | ^ arch/arm64/mm/fault.c:625:16: warning: address of function 'vmap' will always evaluate to 'true' [-Wpointer-bool-conversion] 625 | if (unlikely(!vma)) { | ~^~~ include/linux/compiler.h:77:42: note: expanded from macro 'unlikely' 77 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ arch/arm64/mm/fault.c:625:16: note: prefix with the address-of operator to silence this warning 625 | if (unlikely(!vma)) { | ^ | & include/linux/compiler.h:77:42: note: expanded from macro 'unlikely' 77 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ arch/arm64/mm/fault.c:630:30: error: use of undeclared identifier 'vma'; did you mean 'vmap'? 630 | fault = __do_page_fault(mm, vma, addr, mm_flags, vm_flags, regs); | ^~~ | vmap include/linux/vmalloc.h:164:14: note: 'vmap' declared here 164 | extern void *vmap(struct page **pages, unsigned int count, | ^ 1 warning and 3 errors generated. vim +/vma +624 arch/arm64/mm/fault.c ae870a68b5d13d Linus Torvalds 2023-06-15 622 1d18c47c735e8a Catalin Marinas 2012-03-05 623 retry: ae870a68b5d13d Linus Torvalds 2023-06-15 @624 vma = lock_mm_and_find_vma(mm, addr, regs); ae870a68b5d13d Linus Torvalds 2023-06-15 625 if (unlikely(!vma)) { ae870a68b5d13d Linus Torvalds 2023-06-15 626 fault = VM_FAULT_BADMAP; ae870a68b5d13d Linus Torvalds 2023-06-15 627 goto done; 1d18c47c735e8a Catalin Marinas 2012-03-05 628 } 1d18c47c735e8a Catalin Marinas 2012-03-05 629 ae870a68b5d13d Linus Torvalds 2023-06-15 630 fault = __do_page_fault(mm, vma, addr, mm_flags, vm_flags, regs); 1d18c47c735e8a Catalin Marinas 2012-03-05 631 b502f038f2ffc9 Peter Xu 2020-04-01 632 /* Quick path to respond to signals */ b502f038f2ffc9 Peter Xu 2020-04-01 633 if (fault_signal_pending(fault, regs)) { 289d07a2dc6c6b Mark Rutland 2017-07-11 634 if (!user_mode(regs)) 289d07a2dc6c6b Mark Rutland 2017-07-11 635 goto no_context; 1d18c47c735e8a Catalin Marinas 2012-03-05 636 return 0; 289d07a2dc6c6b Mark Rutland 2017-07-11 637 } 1d18c47c735e8a Catalin Marinas 2012-03-05 638 d92725256b4f22 Peter Xu 2022-05-30 639 /* The fault is fully completed (including releasing mmap lock) */ d92725256b4f22 Peter Xu 2022-05-30 640 if (fault & VM_FAULT_COMPLETED) d92725256b4f22 Peter Xu 2022-05-30 641 return 0; d92725256b4f22 Peter Xu 2022-05-30 642 b502f038f2ffc9 Peter Xu 2020-04-01 643 if (fault & VM_FAULT_RETRY) { 569ba74a7ba69f Mark Salyzyn 2015-09-21 644 mm_flags |= FAULT_FLAG_TRIED; 1d18c47c735e8a Catalin Marinas 2012-03-05 645 goto retry; 1d18c47c735e8a Catalin Marinas 2012-03-05 646 } d8ed45c5dcd455 Michel Lespinasse 2020-06-08 647 mmap_read_unlock(mm); 1d18c47c735e8a Catalin Marinas 2012-03-05 648 cd7f176aea5f59 Suren Baghdasaryan 2023-02-27 649 done: 1d18c47c735e8a Catalin Marinas 2012-03-05 650 /* 0e3a9026396cd7 Punit Agrawal 2017-06-08 651 * Handle the "normal" (no error) case first. 1d18c47c735e8a Catalin Marinas 2012-03-05 652 */ 1d18c47c735e8a Catalin Marinas 2012-03-05 653 if (likely(!(fault & (VM_FAULT_ERROR | VM_FAULT_BADMAP | 6a1bb025d28e10 Peter Xu 2020-08-11 654 VM_FAULT_BADACCESS)))) 1d18c47c735e8a Catalin Marinas 2012-03-05 655 return 0; 1d18c47c735e8a Catalin Marinas 2012-03-05 656 871341023c771a Johannes Weiner 2013-09-12 657 /* 871341023c771a Johannes Weiner 2013-09-12 658 * If we are in kernel mode at this point, we have no context to 871341023c771a Johannes Weiner 2013-09-12 659 * handle this fault with. 871341023c771a Johannes Weiner 2013-09-12 660 */ 871341023c771a Johannes Weiner 2013-09-12 661 if (!user_mode(regs)) 871341023c771a Johannes Weiner 2013-09-12 662 goto no_context; 871341023c771a Johannes Weiner 2013-09-12 663 1d18c47c735e8a Catalin Marinas 2012-03-05 664 if (fault & VM_FAULT_OOM) { 1d18c47c735e8a Catalin Marinas 2012-03-05 665 /* 1d18c47c735e8a Catalin Marinas 2012-03-05 666 * We ran out of memory, call the OOM killer, and return to 1d18c47c735e8a Catalin Marinas 2012-03-05 667 * userspace (which will retry the fault, or kill us if we got 1d18c47c735e8a Catalin Marinas 2012-03-05 668 * oom-killed). 1d18c47c735e8a Catalin Marinas 2012-03-05 669 */ 1d18c47c735e8a Catalin Marinas 2012-03-05 670 pagefault_out_of_memory(); 1d18c47c735e8a Catalin Marinas 2012-03-05 671 return 0; 1d18c47c735e8a Catalin Marinas 2012-03-05 672 } 1d18c47c735e8a Catalin Marinas 2012-03-05 673 2d2837fab5fada Eric W. Biederman 2018-09-22 674 inf = esr_to_fault_info(esr); 559d8d91a89cc2 Eric W. Biederman 2018-09-22 675 set_thread_esr(addr, esr); 1d18c47c735e8a Catalin Marinas 2012-03-05 676 if (fault & VM_FAULT_SIGBUS) { 1d18c47c735e8a Catalin Marinas 2012-03-05 677 /* 1d18c47c735e8a Catalin Marinas 2012-03-05 678 * We had some memory, but were unable to successfully fix up 1d18c47c735e8a Catalin Marinas 2012-03-05 679 * this page fault. 1d18c47c735e8a Catalin Marinas 2012-03-05 680 */ dceec3ff780767 Peter Collingbourne 2020-11-20 681 arm64_force_sig_fault(SIGBUS, BUS_ADRERR, far, inf->name); 9ea3a9743cac4f Eric W. Biederman 2018-09-22 682 } else if (fault & (VM_FAULT_HWPOISON_LARGE | VM_FAULT_HWPOISON)) { 9ea3a9743cac4f Eric W. Biederman 2018-09-22 683 unsigned int lsb; 9ea3a9743cac4f Eric W. Biederman 2018-09-22 684 9ea3a9743cac4f Eric W. Biederman 2018-09-22 685 lsb = PAGE_SHIFT; 9ea3a9743cac4f Eric W. Biederman 2018-09-22 686 if (fault & VM_FAULT_HWPOISON_LARGE) 9ea3a9743cac4f Eric W. Biederman 2018-09-22 687 lsb = hstate_index_to_shift(VM_FAULT_GET_HINDEX(fault)); 92ff0674f5d801 Will Deacon 2018-02-20 688 dceec3ff780767 Peter Collingbourne 2020-11-20 689 arm64_force_sig_mceerr(BUS_MCEERR_AR, far, lsb, inf->name); 1d18c47c735e8a Catalin Marinas 2012-03-05 690 } else { 1d18c47c735e8a Catalin Marinas 2012-03-05 691 /* 1d18c47c735e8a Catalin Marinas 2012-03-05 692 * Something tried to access memory that isn't in our memory 1d18c47c735e8a Catalin Marinas 2012-03-05 693 * map. 1d18c47c735e8a Catalin Marinas 2012-03-05 694 */ feca355b3d8eba Eric W. Biederman 2018-09-22 695 arm64_force_sig_fault(SIGSEGV, feca355b3d8eba Eric W. Biederman 2018-09-22 696 fault == VM_FAULT_BADACCESS ? SEGV_ACCERR : SEGV_MAPERR, dceec3ff780767 Peter Collingbourne 2020-11-20 697 far, inf->name); 1d18c47c735e8a Catalin Marinas 2012-03-05 698 } 1d18c47c735e8a Catalin Marinas 2012-03-05 699 1d18c47c735e8a Catalin Marinas 2012-03-05 700 return 0; 1d18c47c735e8a Catalin Marinas 2012-03-05 701 1d18c47c735e8a Catalin Marinas 2012-03-05 702 no_context: 67ce16ec15ce9d Kristina Martsenko 2017-06-09 703 __do_kernel_fault(addr, esr, regs); 1d18c47c735e8a Catalin Marinas 2012-03-05 704 return 0; 1d18c47c735e8a Catalin Marinas 2012-03-05 705 } 1d18c47c735e8a Catalin Marinas 2012-03-05 706 :::::: The code at line 624 was first introduced by commit :::::: ae870a68b5d13d67cf4f18d47bb01ee3fee40acb arm64/mm: Convert to using lock_mm_and_find_vma() :::::: TO: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
