fs/f2fs/checkpoint.c:784:57: sparse: sparse: incorrect type in argument 1 (different address spaces)

fs/f2fs/checkpoint.c:784:57: sparse: sparse: incorrect type in argument 1 (different address spaces)

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   28924df2a08f440c73991b83028032c901de2ae4
commit: 9a9ee7408a1f8271bd1978baff2dd09457054ef4 f2fs: reduce memory footprint of ino management
date:   3 weeks ago
config: parisc-randconfig-r132-20260908 (https://download.01.org/0day-ci/archive/20260908/202609081243.Jo4beeqD-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 10.5.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260908/202609081243.Jo4beeqD-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
| Fixes: 9a9ee7408a1f ("f2fs: reduce memory footprint of ino management")
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202609081243.Jo4beeqD-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   fs/f2fs/checkpoint.c:782:14: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void **slot @@     got void [noderef] __rcu ** @@
   fs/f2fs/checkpoint.c:782:14: sparse:     expected void **slot
   fs/f2fs/checkpoint.c:782:14: sparse:     got void [noderef] __rcu **
>> fs/f2fs/checkpoint.c:784:57: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void [noderef] __rcu **slot @@     got void **slot @@
   fs/f2fs/checkpoint.c:784:57: sparse:     expected void [noderef] __rcu **slot
   fs/f2fs/checkpoint.c:784:57: sparse:     got void **slot
   fs/f2fs/checkpoint.c:789:64: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void [noderef] __rcu **slot @@     got void **slot @@
   fs/f2fs/checkpoint.c:789:64: sparse:     expected void [noderef] __rcu **slot
   fs/f2fs/checkpoint.c:789:64: sparse:     got void **slot
   fs/f2fs/checkpoint.c:810:14: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void **slot @@     got void [noderef] __rcu ** @@
   fs/f2fs/checkpoint.c:810:14: sparse:     expected void **slot
   fs/f2fs/checkpoint.c:810:14: sparse:     got void [noderef] __rcu **
   fs/f2fs/checkpoint.c:812:57: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void [noderef] __rcu **slot @@     got void **slot @@
   fs/f2fs/checkpoint.c:812:57: sparse:     expected void [noderef] __rcu **slot
   fs/f2fs/checkpoint.c:812:57: sparse:     got void **slot
   fs/f2fs/checkpoint.c:819:64: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void [noderef] __rcu **slot @@     got void **slot @@
   fs/f2fs/checkpoint.c:819:64: sparse:     expected void [noderef] __rcu **slot
   fs/f2fs/checkpoint.c:819:64: sparse:     got void **slot

vim +784 fs/f2fs/checkpoint.c

   768	
   769	static void __set_ino_bitmap(struct f2fs_sb_info *sbi, nid_t ino, int type)
   770	{
   771		struct inode_management *im = &sbi->im[type];
   772		unsigned long index = INO_SLOT_INDEX(ino);
   773		unsigned int ofs = INO_BIT_OFFSET(ino);
   774		void **slot, *entry;
   775		unsigned long bitmap = 0;
   776		int ret;
   777	
   778		ret = radix_tree_preload(GFP_NOFS | __GFP_NOFAIL);
   779		f2fs_bug_on(sbi, ret);
   780	
   781		spin_lock(&im->ino_lock);
   782		slot = radix_tree_lookup_slot(&im->ino_root, index);
   783		if (slot) {
 > 784			entry = radix_tree_deref_slot_protected(slot, &im->ino_lock);
   785			bitmap = xa_to_value(entry);
   786			if (!(bitmap & (1UL << ofs))) {
   787				bitmap |= (1UL << ofs);
   788				entry = xa_mk_value(bitmap);
   789				radix_tree_replace_slot(&im->ino_root, slot, entry);
   790			}
   791		} else {
   792			bitmap |= (1UL << ofs);
   793			entry = xa_mk_value(bitmap);
   794			if (unlikely(radix_tree_insert(&im->ino_root, index, entry)))
   795				f2fs_bug_on(sbi, 1);
   796		}
   797		spin_unlock(&im->ino_lock);
   798		radix_tree_preload_end();
   799	}
   800	

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