tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 136057256686de39cc3a07c2e39ef6bc43003ff6 commit: b756a3b5e7ead8f6f4b03cea8ac22478ce04c8a8 mm: device exclusive memory access date: 5 months ago config: alpha-randconfig-s031-20211122 (https://download.01.org/0day-ci/archive/20211124/202111240450.3z7aF31U-lkp@xxxxxxxxx/config.gz) compiler: alpha-linux-gcc (GCC) 11.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b756a3b5e7ead8f6f4b03cea8ac22478ce04c8a8 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout b756a3b5e7ead8f6f4b03cea8ac22478ce04c8a8 # save the config file to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=alpha SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> mm/memory.c:709:25: sparse: sparse: cast to non-scalar >> mm/memory.c:709:25: sparse: sparse: cast from non-scalar mm/memory.c:1023:17: sparse: sparse: context imbalance in 'copy_pte_range' - different lock contexts for basic block mm/memory.c:1736:16: sparse: sparse: context imbalance in '__get_locked_pte' - different lock contexts for basic block mm/memory.c:1785:9: sparse: sparse: context imbalance in 'insert_page' - different lock contexts for basic block mm/memory.c:2287:17: sparse: sparse: context imbalance in 'remap_pte_range' - different lock contexts for basic block mm/memory.c:2543:17: sparse: sparse: context imbalance in 'apply_to_pte_range' - unexpected unlock mm/memory.c:2831:17: sparse: sparse: context imbalance in 'wp_page_copy' - unexpected unlock mm/memory.c:3180:17: sparse: sparse: context imbalance in 'wp_pfn_shared' - unexpected unlock mm/memory.c:3243:19: sparse: sparse: context imbalance in 'do_wp_page' - different lock contexts for basic block mm/memory.c: note: in included file (through include/linux/mm.h, arch/alpha/include/asm/io.h, include/linux/io.h, include/linux/irq.h, ...): include/linux/pgtable.h:275:16: sparse: sparse: cast to non-scalar include/linux/pgtable.h:275:16: sparse: sparse: cast from non-scalar mm/memory.c:4874:5: sparse: sparse: context imbalance in 'follow_invalidate_pte' - different lock contexts for basic block mm/memory.c:4995:9: sparse: sparse: context imbalance in 'follow_pfn' - unexpected unlock vim +709 mm/memory.c 701 702 static void restore_exclusive_pte(struct vm_area_struct *vma, 703 struct page *page, unsigned long address, 704 pte_t *ptep) 705 { 706 pte_t pte; 707 swp_entry_t entry; 708 > 709 pte = pte_mkold(mk_pte(page, READ_ONCE(vma->vm_page_prot))); 710 if (pte_swp_soft_dirty(*ptep)) 711 pte = pte_mksoft_dirty(pte); 712 713 entry = pte_to_swp_entry(*ptep); 714 if (pte_swp_uffd_wp(*ptep)) 715 pte = pte_mkuffd_wp(pte); 716 else if (is_writable_device_exclusive_entry(entry)) 717 pte = maybe_mkwrite(pte_mkdirty(pte), vma); 718 719 set_pte_at(vma->vm_mm, address, ptep, pte); 720 721 /* 722 * No need to take a page reference as one was already 723 * created when the swap entry was made. 724 */ 725 if (PageAnon(page)) 726 page_add_anon_rmap(page, vma, address, false); 727 else 728 /* 729 * Currently device exclusive access only supports anonymous 730 * memory so the entry shouldn't point to a filebacked page. 731 */ 732 WARN_ON_ONCE(!PageAnon(page)); 733 734 if (vma->vm_flags & VM_LOCKED) 735 mlock_vma_page(page); 736 737 /* 738 * No need to invalidate - it was non-present before. However 739 * secondary CPUs may have mappings that need invalidating. 740 */ 741 update_mmu_cache(vma, address, ptep); 742 } 743 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
