Re: [PATCH nf-next,v1 2/3] netfilter: nft_set_rbtree: translate rbtree to array for binary search

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

Hi Pablo,

kernel test robot noticed the following build warnings:

[auto build test WARNING on netfilter-nf/main]
[also build test WARNING on linus/master v6.19-rc5 next-20260115]
[cannot apply to nf-next/master]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Pablo-Neira-Ayuso/netfilter-nf_tables-add-abort_skip_removal-flag-for-set-types/20260115-204555
base:   https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf.git main
patch link:    https://lore.kernel.org/r/20260115124322.90712-3-pablo%40netfilter.org
patch subject: [PATCH nf-next,v1 2/3] netfilter: nft_set_rbtree: translate rbtree to array for binary search
config: sh-randconfig-r121-20260116 (https://download.01.org/0day-ci/archive/20260116/202601161133.QwCjx0vn-lkp@intel.com/config)
compiler: sh4-linux-gcc (GCC) 15.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260116/202601161133.QwCjx0vn-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/202601161133.QwCjx0vn-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> net/netfilter/nft_set_rbtree.c:823:38: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct nft_array *array @@     got struct nft_array [noderef] __rcu *array @@
   net/netfilter/nft_set_rbtree.c:823:38: sparse:     expected struct nft_array *array
   net/netfilter/nft_set_rbtree.c:823:38: sparse:     got struct nft_array [noderef] __rcu *array
   net/netfilter/nft_set_rbtree.c: note: in included file (through include/linux/mm_types.h, include/linux/mmzone.h, include/linux/gfp.h, ...):
   include/linux/rbtree.h:102:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
   include/linux/rbtree.h:102:9: sparse:    struct rb_node [noderef] __rcu *
   include/linux/rbtree.h:102:9: sparse:    struct rb_node *

vim +823 net/netfilter/nft_set_rbtree.c

   808	
   809	static void nft_rbtree_destroy(const struct nft_ctx *ctx,
   810				       const struct nft_set *set)
   811	{
   812		struct nft_rbtree *priv = nft_set_priv(set);
   813		struct nft_rbtree_elem *rbe;
   814		struct rb_node *node;
   815	
   816		while ((node = priv->root.rb_node) != NULL) {
   817			rb_erase(node, &priv->root);
   818			rbe = rb_entry(node, struct nft_rbtree_elem, node);
   819			nf_tables_set_elem_destroy(ctx, set, &rbe->priv);
   820		}
   821	
   822		if (priv->array)
 > 823			__nft_array_free(priv->array);
   824		if (priv->array_next)
   825			__nft_array_free(priv->array_next);
   826	}
   827	

-- 
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