[koverstreet-bcachefs:bcachefs-testing 460/692] fs/bcachefs/btree/journal_overlay.c:83:22: sparse: sparse: incompatible types in comparison expression (different address spaces):

[koverstreet-bcachefs:bcachefs-testing 460/692] fs/bcachefs/btree/journal_overlay.c:83:22: sparse: sparse: incompatible types in comparison expression (different address spaces):

[kernel test robot]

tree:   https://github.com/koverstreet/bcachefs bcachefs-testing
head:   a4abf4352bcdf7adc9cf5605c5035f6441ed7576
commit: e76ee9c357ee7790d44c9cbdb00466d23aca892c [460/692] bcachefs: btree_journal_iter.c -> btree/journal_overlay.c
config: powerpc-randconfig-r112-20251026 (https://download.01.org/0day-ci/archive/20251027/202510270318.AUpz7ThY-lkp@intel.com/config)
compiler: powerpc-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251027/202510270318.AUpz7ThY-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/202510270318.AUpz7ThY-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   fs/bcachefs/btree/journal_overlay.c: note: in included file (through fs/bcachefs/bcachefs.h):
   fs/bcachefs/bcachefs_format.h:1325:38: sparse: sparse: array of flexible structures
>> fs/bcachefs/btree/journal_overlay.c:83:22: sparse: sparse: incompatible types in comparison expression (different address spaces):
   fs/bcachefs/btree/journal_overlay.c:83:22: sparse:    struct journal_key_range_overwritten [noderef] __rcu *
   fs/bcachefs/btree/journal_overlay.c:83:22: sparse:    struct journal_key_range_overwritten *
>> fs/bcachefs/btree/journal_overlay.c:83:22: sparse: sparse: incompatible types in comparison expression (different address spaces):
   fs/bcachefs/btree/journal_overlay.c:83:22: sparse:    struct journal_key_range_overwritten [noderef] __rcu *
   fs/bcachefs/btree/journal_overlay.c:83:22: sparse:    struct journal_key_range_overwritten *
>> fs/bcachefs/btree/journal_overlay.c:83:22: sparse: sparse: incompatible types in comparison expression (different address spaces):
   fs/bcachefs/btree/journal_overlay.c:83:22: sparse:    struct journal_key_range_overwritten [noderef] __rcu *
   fs/bcachefs/btree/journal_overlay.c:83:22: sparse:    struct journal_key_range_overwritten *

vim +83 fs/bcachefs/btree/journal_overlay.c

597554cb9b31d8 fs/bcachefs/btree_journal_iter.c Kent Overstreet 2025-08-13  80  
597554cb9b31d8 fs/bcachefs/btree_journal_iter.c Kent Overstreet 2025-08-13  81  static inline struct journal_key_range_overwritten *overwrite_range(struct journal_keys *keys, u32 idx)
597554cb9b31d8 fs/bcachefs/btree_journal_iter.c Kent Overstreet 2025-08-13  82  {
597554cb9b31d8 fs/bcachefs/btree_journal_iter.c Kent Overstreet 2025-08-13 @83  	return idx ? rcu_dereference(keys->overwrites.data) + idx : NULL;
597554cb9b31d8 fs/bcachefs/btree_journal_iter.c Kent Overstreet 2025-08-13  84  }
597554cb9b31d8 fs/bcachefs/btree_journal_iter.c Kent Overstreet 2025-08-13  85  

:::::: The code at line 83 was first introduced by commit
:::::: 597554cb9b31d8d2073776de3dc9c34d3a7d36bf bcachefs: pointer compression for journal_key_range_overwritten

:::::: TO: Kent Overstreet <kent.overstreet@linux.dev>
:::::: CC: Kent Overstreet <kent.overstreet@linux.dev>

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