arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   2b7a25df823dc7d8f56f8ce7c2d2dac391cea9c2
commit: dd5712f3379cfe760267cdd28ff957d9ab4e51c7 alpha: fix user-space corruption during memory compaction
date:   4 weeks ago
config: alpha-randconfig-r111-20260219 (https://download.01.org/0day-ci/archive/20260219/202602192031.nhgvoxLf-lkp@xxxxxxxxx/config)
compiler: alpha-linux-gcc (GCC) 10.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260219/202602192031.nhgvoxLf-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/202602192031.nhgvoxLf-lkp@xxxxxxxxx/

sparse warnings: (new ones prefixed by >>)
   mm/mprotect.c: note: in included file (through include/linux/mm.h, include/linux/pagewalk.h):
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/mprotect.c: note: in included file (through include/linux/pgtable.h, include/linux/mm.h, include/linux/pagewalk.h):
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
   mm/mprotect.c: note: in included file (through include/linux/mm.h, include/linux/pagewalk.h):
   include/linux/pgtable.h:354:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:354:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:347:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:347:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
--
   mm/mremap.c: note: in included file (through include/linux/mm.h):
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/mremap.c: note: in included file (through include/linux/pgtable.h, include/linux/mm.h):
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
   mm/mremap.c:313:18: sparse: sparse: context imbalance in 'move_ptes' - unexpected unlock
--
   mm/rmap.c: note: in included file (through include/linux/ksm.h):
   include/linux/rmap.h:956:26: sparse: sparse: context imbalance in 'folio_referenced_one' - unexpected unlock
   mm/rmap.c: note: in included file (through include/linux/mm.h):
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/rmap.c: note: in included file (through include/linux/pgtable.h, include/linux/mm.h):
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
   mm/rmap.c: note: in included file (through include/linux/mm.h):
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/rmap.c: note: in included file (through include/linux/pgtable.h, include/linux/mm.h):
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
   mm/rmap.c: note: in included file (through include/linux/mm.h):
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/rmap.c: note: in included file (through include/linux/ksm.h):
   include/linux/rmap.h:956:26: sparse: sparse: context imbalance in 'try_to_unmap_one' - unexpected unlock
   mm/rmap.c: note: in included file (through include/linux/mm.h):
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/rmap.c: note: in included file (through include/linux/pgtable.h, include/linux/mm.h):
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
   mm/rmap.c: note: in included file (through include/linux/ksm.h):
   include/linux/rmap.h:956:26: sparse: sparse: context imbalance in 'try_to_migrate_one' - unexpected unlock
--
   mm/memory.c:876:38: sparse: sparse: cast to non-scalar
   mm/memory.c:876:38: sparse: sparse: cast from non-scalar
   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:361:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:361:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:354:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:354:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:347:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:347:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/memory.c:1331:9: sparse: sparse: context imbalance in 'copy_pte_range' - unexpected unlock
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/memory.c: note: in included file (through include/linux/pgtable.h, include/linux/mm.h, arch/alpha/include/asm/io.h, ...):
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
   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:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/memory.c: note: in included file (through include/linux/pgtable.h, include/linux/mm.h, arch/alpha/include/asm/io.h, ...):
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
   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:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/memory.c: note: in included file (through include/linux/pgtable.h, include/linux/mm.h, arch/alpha/include/asm/io.h, ...):
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
   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:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/memory.c:2220:16: sparse: sparse: context imbalance in '__get_locked_pte' - different lock contexts for basic block
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/memory.c:2326:9: sparse: sparse: context imbalance in 'insert_page' - unexpected unlock
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/memory.c:2611:9: sparse: sparse: context imbalance in 'insert_pfn' - unexpected unlock
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/memory.c:3193:17: sparse: sparse: context imbalance in 'apply_to_pte_range' - unexpected unlock
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/memory.c: note: in included file (through include/linux/pgtable.h, include/linux/mm.h, arch/alpha/include/asm/io.h, ...):
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
   mm/memory.c:3826:42: sparse: sparse: context imbalance in 'wp_page_copy' - 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:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/memory.c:3865:19: sparse: sparse: context imbalance in 'finish_mkwrite_fault' - different lock contexts for basic block
   mm/memory.c:3896:17: sparse: sparse: context imbalance in 'wp_pfn_shared' - unexpected unlock
   mm/memory.c:3922:17: sparse: sparse: context imbalance in 'wp_page_shared' - unexpected unlock
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/memory.c:4088:19: sparse: sparse: context imbalance in 'do_wp_page' - different lock contexts for basic block
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/memory.c:4350:9: sparse: sparse: context imbalance in 'remove_device_exclusive_entry' - different lock contexts for basic block
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/memory.c:4376:19: sparse: sparse: context imbalance in 'pte_marker_clear' - different lock contexts for basic block
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/memory.c:4621:12: sparse: sparse: context imbalance in 'do_swap_page' - unexpected unlock
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/memory.c:5280:9: sparse: sparse: context imbalance in 'do_anonymous_page' - different lock contexts for basic block
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/memory.c:5512:12: sparse: sparse: context imbalance in 'finish_fault' - different lock contexts for basic block
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/memory.c:5896:9: sparse: sparse: context imbalance in 'do_fault' - different lock contexts for basic block
   mm/memory.c: note: in included file (through include/linux/pgtable.h, include/linux/mm.h, arch/alpha/include/asm/io.h, ...):
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
   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:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/memory.c:6025:17: sparse: sparse: context imbalance in 'do_numa_page' - unexpected unlock
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/memory.c:6301:9: sparse: sparse: context imbalance in 'handle_pte_fault' - unexpected unlock
   include/linux/pgtable.h:347:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:347:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:361:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:361:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:354:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:354:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:347:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:347:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/memory.c:6743:5: sparse: sparse: context imbalance in 'follow_pfnmap_start' - different lock contexts for basic block
   mm/memory.c:6829:28: sparse: sparse: context imbalance in 'follow_pfnmap_end' - unexpected unlock
--
   mm/madvise.c: note: in included file (through include/linux/mm.h, include/linux/mman.h):
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/madvise.c: note: in included file (through include/linux/pgtable.h, include/linux/mm.h, include/linux/mman.h):
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
   mm/madvise.c:562:9: sparse: sparse: context imbalance in 'madvise_cold_or_pageout_pte_range' - different lock contexts for basic block
   mm/madvise.c: note: in included file (through include/linux/mm.h, include/linux/mman.h):
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/madvise.c: note: in included file (through include/linux/pgtable.h, include/linux/mm.h, include/linux/mman.h):
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
   mm/madvise.c:781:9: sparse: sparse: context imbalance in 'madvise_free_pte_range' - different lock contexts for basic block
   mm/madvise.c: note: in included file (through include/linux/mm.h, include/linux/mman.h):
   include/linux/pgtable.h:354:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:354:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:347:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:347:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:354:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:354:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:347:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:347:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
--
   mm/ksm.c: note: in included file (through include/linux/mm.h):
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/ksm.c:816:17: sparse: sparse: context imbalance in 'get_mergeable_page' - unexpected unlock
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/ksm.c: note: in included file (through include/linux/pgtable.h, include/linux/mm.h):
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
   mm/ksm.c: note: in included file:
   include/linux/rmap.h:956:26: sparse: sparse: context imbalance in 'write_protect_page' - unexpected unlock
   mm/ksm.c: note: in included file (through include/linux/mm.h):
   include/linux/pgtable.h:347:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:347:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/ksm.c: note: in included file (through include/linux/pgtable.h, include/linux/mm.h):
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
   mm/ksm.c:1461:42: sparse: sparse: context imbalance in 'replace_page' - different lock contexts for basic block
   mm/ksm.c: note: in included file (through include/linux/mm.h):
   include/linux/pgtable.h:347:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:347:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:347:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:347:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/ksm.c:2563:9: sparse: sparse: context imbalance in 'ksm_next_page_pmd_entry' - different lock contexts for basic block
--
   mm/vmalloc.c: note: in included file (through include/linux/mm.h):
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/vmalloc.c: note: in included file (through include/linux/pgtable.h, include/linux/mm.h):
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast to non-scalar
>> arch/alpha/include/asm/pgtable.h:278:21: sparse: sparse: cast from non-scalar
   mm/vmalloc.c: note: in included file (through include/linux/mm.h):
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast to non-scalar
   include/linux/pgtable.h:340:16: sparse: sparse: cast from non-scalar
   mm/vmalloc.c:1128:25: sparse: sparse: context imbalance in 'find_vmap_area_exceed_addr_lock' - wrong count at exit
   mm/vmalloc.c:4671:28: sparse: sparse: context imbalance in 'vread_iter' - unexpected unlock

vim +278 arch/alpha/include/asm/pgtable.h

   273	
   274	static inline pte_t ptep_get_and_clear(struct mm_struct *mm,
   275						unsigned long address,
   276						pte_t *ptep)
   277	{
 > 278		pte_t pte = READ_ONCE(*ptep);
   279	
   280		pte_clear(mm, address, ptep);
   281		return pte;
   282	}
   283	

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