tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: a0f7a942ef42e73c8748687d469ed61f380bf0cf commit: ae0cd4d46ced733c522f2cc6da2d380d69123fc4 [1514/1514] mm: parallelize clear_gigantic_page config: x86_64-randconfig-121-20250325 (https://download.01.org/0day-ci/archive/20250325/202503252231.BsBQmABZ-lkp@i...) compiler: gcc-11 (Debian 11.3.0-12) 11.3.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250325/202503252231.BsBQmABZ-lkp@i...) 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@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202503252231.BsBQmABZ-lkp@intel.com/ sparse warnings: (new ones prefixed by >>)

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mm/memory.c:4489:43: sparse: sparse: Using plain integer as NULL pointer mm/memory.c:4560:22: sparse: sparse: cast removes address space '__user' of expression mm/memory.c:833:17: sparse: sparse: context imbalance in 'copy_pte_range' - different lock contexts for basic block mm/memory.c:1436:16: sparse: sparse: context imbalance in '__get_locked_pte' - different lock contexts for basic block mm/memory.c:1478:9: sparse: sparse: context imbalance in 'insert_page' - different lock contexts for basic block mm/memory.c:1579:9: sparse: sparse: context imbalance in 'insert_pfn' - different lock contexts for basic block mm/memory.c:1746:17: sparse: sparse: context imbalance in 'remap_pte_range' - different lock contexts for basic block mm/memory.c:1975:17: sparse: sparse: context imbalance in 'apply_to_pte_range' - unexpected unlock mm/memory.c:2422:17: sparse: sparse: context imbalance in 'wp_pfn_shared' - unexpected unlock mm/memory.c:2484:19: sparse: sparse: context imbalance in 'do_wp_page' - different lock contexts for basic block mm/memory.c:3055:19: sparse: sparse: context imbalance in 'pte_alloc_one_map' - different lock contexts for basic block mm/memory.c:3295:17: sparse: sparse: context imbalance in 'finish_fault' - unexpected unlock mm/memory.c:3409:9: sparse: sparse: context imbalance in 'do_fault_around' - unexpected unlock mm/memory.c:4062:12: sparse: sparse: context imbalance in '__follow_pte_pmd' - different lock contexts for basic block mm/memory.c:4146:16: sparse: sparse: context imbalance in 'follow_pte_pmd' - different lock contexts for basic block mm/memory.c:4206:9: sparse: sparse: context imbalance in 'follow_phys' - unexpected unlock In file included from mm/memory.c:72: mm/memory.c: In function 'clear_huge_page': include/linux/ktask.h:123:35: warning: cast between incompatible function types from 'int (*)(long unsigned int, long unsigned int, struct cgp_args *)' to 'int (*)(void *, void *, void *)' [-Wcast-function-type] 123 | .kc_thread_func = (ktask_thread_func)(thread_func), 22- | ^ include/linux/ktask.h:139:17: note: in expansion of macro 'KTASK_CTL_INITIALIZER' 139 | KTASK_CTL_INITIALIZER(thread_func, func_arg, min_chunk_size) 25- | ^~~~~~~~~~~~~~~~~~~~~ mm/memory.c:4491:17: note: in expansion of macro 'DEFINE_KTASK_CTL' 4491 | DEFINE_KTASK_CTL(ctl, clear_gigantic_page_chunk, &args, | ^~~~~~~~~~~~~~~~

vim +4489 mm/memory.c 4480 4481 void clear_huge_page(struct page *page, 4482 unsigned long addr_hint, unsigned int pages_per_huge_page) 4483 { 4484 unsigned long addr = addr_hint & 4485 ~(((unsigned long)pages_per_huge_page << PAGE_SHIFT) - 1); 4486 4487 if (unlikely(pages_per_huge_page > MAX_ORDER_NR_PAGES)) { 4488 struct cgp_args args = {page, addr};

4489 struct ktask_node node = {0, pages_per_huge_page, 4490 page_to_nid(page)}; 4491 DEFINE_KTASK_CTL(ctl, clear_gigantic_page_chunk, &args, 4492 KTASK_MEM_CHUNK); 4493 4494 ktask_run_numa(&node, 1, &ctl); 4495 return; 4496 } 4497 4498 process_huge_page(addr_hint, pages_per_huge_page, clear_subpage, page); 4499 } 4500

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