kernel/bpf/arraymap.c:273:16: warning: cast from pointer to integer of different size

kernel/bpf/arraymap.c:273:16: warning: cast from pointer to integer of different size

[kernel test robot]

tree:   https://github.com/intel-lab-lkp/linux/commits/Leon-Hwang/bpf-Drop-duplicate-blank-lines-in-verifier/20260608-233454
head:   a7ef4d11654fb50cefd814ffd633716a81162cab
commit: 990c3b195b0558afe66bdad9d07d745e7cb588a9 bpf: Introduce global percpu data
date:   16 hours ago
config: i386-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20260609/202606090909.TMZDeRdW-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260609/202606090909.TMZDeRdW-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/202606090909.TMZDeRdW-lkp@intel.com/

All warnings (new ones prefixed by >>):

   kernel/bpf/arraymap.c: In function 'percpu_array_map_direct_value_addr':
>> kernel/bpf/arraymap.c:273:16: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
     273 |         *imm = (u64) array->pptrs[0];
         |                ^
   kernel/bpf/arraymap.c: In function 'percpu_array_map_direct_value_meta':
   kernel/bpf/arraymap.c:280:20: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
     280 |         u64 base = (u64) array->pptrs[0];
         |                    ^


vim +273 kernel/bpf/arraymap.c

   261	
   262	static int percpu_array_map_direct_value_addr(const struct bpf_map *map, u64 *imm, u32 off)
   263	{
   264		struct bpf_array *array = container_of(map, struct bpf_array, map);
   265	
   266		if (map->max_entries != 1)
   267			return -EOPNOTSUPP;
   268		if (off >= map->value_size)
   269			return -EINVAL;
   270		if (!bpf_jit_supports_percpu_insn())
   271			return -EOPNOTSUPP;
   272	
 > 273		*imm = (u64) array->pptrs[0];
   274		return 0;
   275	}
   276	

--
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https://github.com/intel/lkp-tests/wiki