[akpm-mm:mm-new 102/124] lib/maple_tree.c:3364:38: sparse: sparse: incorrect type in argument 1 (different address spaces)

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-new
head:   3b688128ee79df55807d8b3e60e9d0ed62db009d
commit: 8b56f4dfdf0a4aa460fde0212eb270c943288bfa [102/124] maple_tree-add-cp_is_new_root-helper-fix
config: csky-randconfig-r122-20260204 (https://download.01.org/0day-ci/archive/20260204/202602041809.nfXcWI84-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 15.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260204/202602041809.nfXcWI84-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/202602041809.nfXcWI84-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> lib/maple_tree.c:3364:38: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void [noderef] __rcu **slot @@     got void [noderef] __rcu * @@
   lib/maple_tree.c:3364:38: sparse:     expected void [noderef] __rcu **slot
   lib/maple_tree.c:3364:38: sparse:     got void [noderef] __rcu *

vim +3364 lib/maple_tree.c

  3339	
  3340	static inline bool cp_is_new_root(struct maple_copy *cp, struct ma_state *mas)
  3341	{
  3342		if (cp->min || cp->max != ULONG_MAX)
  3343			return false;
  3344	
  3345		if (cp->d_count != 1) {
  3346			enum maple_type mt = maple_arange_64;
  3347	
  3348			if (!mt_is_alloc(mas->tree))
  3349				mt = maple_range_64;
  3350	
  3351			cp->data = cp->d_count;
  3352			cp->s_count = 0;
  3353			dst_setup(cp, mas, mt);
  3354			init_cp_src(cp);
  3355			node_copy(mas, cp->src[0].node, 0, cp->data, cp->max, maple_copy,
  3356				  cp->dst[0].node, 0, mt);
  3357			node_finalise(cp->dst[0].node, mt, cp->end + 1);
  3358			/*
  3359			 * Warning, see cp_leaf_init() comment and rcu_assign_pointer()
  3360			 * documentation.  Since this is a new root, there are no
  3361			 * read-side operations that can view it until it is insert into
  3362			 * the tree after an rcu_assign_pointer() call.
  3363			 */
> 3364			ma_init_slot(cp->slot[0], cp->dst[0].node, mt);
  3365			cp->height++;
  3366		}
  3367		WARN_ON_ONCE(cp->dst[0].node != mte_to_node(
  3368					mt_slot_locked(mas->tree, cp->slot, 0)));
  3369		cp->dst[0].node->parent = ma_parent_ptr(mas_tree_parent(mas));
  3370		mas->min = 0;
  3371		mas->max = ULONG_MAX;
  3372		mas->depth = 0;
  3373		mas->node = mas_root_locked(mas);
  3374		return true;
  3375	}
  3376	

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