[akpm-mm:mm-new 414/422] include/linux/hugetlb_inline.h:16:16: sparse: sparse: dereference of noderef expression

[akpm-mm:mm-new 414/422] include/linux/hugetlb_inline.h:16:16: sparse: sparse: dereference of noderef expression

[kernel test robot]

Hi Lorenzo,

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/akpm/mm.git mm-new
head:   74daaa378c853e693bf1822327648b98c7d491ec
commit: b9a7362d7bfd71c7db3c40aa82816ed3209c3967 [414/422] mm: update hugetlbfs to use VMA flags on mmap_prepare
config: x86_64-randconfig-122-20260121 (https://download.01.org/0day-ci/archive/20260121/202601212341.LQmq1CzY-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260121/202601212341.LQmq1CzY-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202601212341.LQmq1CzY-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   mm/hugetlb.c:658:12: sparse: sparse: context imbalance in 'allocate_file_region_entries' - wrong count at exit
   mm/hugetlb.c:729:13: sparse: sparse: context imbalance in 'region_add' - wrong count at exit
   mm/hugetlb.c:796:13: sparse: sparse: context imbalance in 'region_chg' - wrong count at exit
   mm/hugetlb.c:1196:9: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c:1196:9: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c: note: in included file (through include/linux/pagemap.h):
>> include/linux/hugetlb_inline.h:16:16: sparse: sparse: dereference of noderef expression
>> include/linux/hugetlb_inline.h:16:16: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c: note: in included file:
   include/linux/mm.h:1047:16: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c: note: in included file (through include/linux/pagemap.h):
>> include/linux/hugetlb_inline.h:16:16: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c: note: in included file:
   include/linux/mm.h:1047:16: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c:1197:9: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1047:16: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1047:16: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:36: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:53: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:36: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:53: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c:1204:9: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c:1204:9: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c: note: in included file (through include/linux/pagemap.h):
>> include/linux/hugetlb_inline.h:16:16: sparse: sparse: dereference of noderef expression
>> include/linux/hugetlb_inline.h:16:16: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c: note: in included file:
   include/linux/mm.h:1047:16: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c: note: in included file (through include/linux/pagemap.h):
>> include/linux/hugetlb_inline.h:16:16: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c: note: in included file:
   include/linux/mm.h:1047:16: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c:1205:9: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1047:16: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1047:16: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:36: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:53: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:36: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:53: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c:1219:9: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c:1219:9: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c: note: in included file (through include/linux/pagemap.h):
>> include/linux/hugetlb_inline.h:16:16: sparse: sparse: dereference of noderef expression
>> include/linux/hugetlb_inline.h:16:16: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c: note: in included file:
   include/linux/mm.h:1047:16: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c: note: in included file (through include/linux/pagemap.h):
>> include/linux/hugetlb_inline.h:16:16: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c: note: in included file:
   include/linux/mm.h:1047:16: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c:5098:20: sparse: sparse: context imbalance in 'move_huge_pte' - different lock contexts for basic block
   include/linux/mm.h:1772:22: sparse: sparse: context imbalance in 'hugetlb_wp' - unexpected unlock
   mm/hugetlb.c:6588:13: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c:6588:13: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1047:16: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c:6588:13: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1047:16: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c:6597:22: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1047:16: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1047:16: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:36: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:53: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:36: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:53: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c:6631:22: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1047:16: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1047:16: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:36: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:53: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:36: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:53: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c:6668:22: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1047:16: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1047:16: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:36: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:53: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:36: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:53: sparse: sparse: dereference of noderef expression
   mm/hugetlb.c:6732:22: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1047:16: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1047:16: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:36: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:53: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:36: sparse: sparse: dereference of noderef expression
   include/linux/mm.h:1181:53: sparse: sparse: dereference of noderef expression

vim +16 include/linux/hugetlb_inline.h

    13	
    14	static inline bool is_vma_hugetlb_flags(vma_flags_t flags)
    15	{
  > 16		return vma_flags_test(flags, VMA_HUGETLB_BIT);
    17	}
    18	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki