[rgushchin:bpf_memcg.8 33/35] kernel/bpf/syscall.c:569:45: sparse: sparse: incorrect type in argument 1 (different modifiers)

[rgushchin:bpf_memcg.8 33/35] kernel/bpf/syscall.c:569:45: sparse: sparse: incorrect type in argument 1 (different modifiers)

[kernel test robot]

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tree:   https://github.com/rgushchin/linux.git bpf_memcg.8
head:   3dc3c6707ccc33e02b04281ea17c43cc455f1c4e
commit: dfaf7b3e48cf6269c319e7b8630e9f2213e229e8 [33/35] bpf: eliminate rlimit-based memory accounting infra for bpf maps
config: c6x-randconfig-s032-20201125 (attached as .config)
compiler: c6x-elf-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.3-151-g540c2c4b-dirty
        # https://github.com/rgushchin/linux/commit/dfaf7b3e48cf6269c319e7b8630e9f2213e229e8
        git remote add rgushchin https://github.com/rgushchin/linux.git
        git fetch --no-tags rgushchin bpf_memcg.8
        git checkout dfaf7b3e48cf6269c319e7b8630e9f2213e229e8
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=c6x 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


"sparse warnings: (new ones prefixed by >>)"
>> kernel/bpf/syscall.c:569:45: sparse: sparse: incorrect type in argument 1 (different modifiers) @@     expected struct bpf_map *map @@     got struct bpf_map const *map @@
>> kernel/bpf/syscall.c:569:45: sparse:     expected struct bpf_map *map
>> kernel/bpf/syscall.c:569:45: sparse:     got struct bpf_map const *map

vim +569 kernel/bpf/syscall.c

   542	
   543	static void bpf_map_show_fdinfo(struct seq_file *m, struct file *filp)
   544	{
   545		const struct bpf_map *map = filp->private_data;
   546		const struct bpf_array *array;
   547		u32 type = 0, jited = 0;
   548	
   549		if (map->map_type == BPF_MAP_TYPE_PROG_ARRAY) {
   550			array = container_of(map, struct bpf_array, map);
   551			type  = array->aux->type;
   552			jited = array->aux->jited;
   553		}
   554	
   555		seq_printf(m,
   556			   "map_type:\t%u\n"
   557			   "key_size:\t%u\n"
   558			   "value_size:\t%u\n"
   559			   "max_entries:\t%u\n"
   560			   "map_flags:\t%#x\n"
   561			   "memlock:\t%lu\n"
   562			   "map_id:\t%u\n"
   563			   "frozen:\t%u\n",
   564			   map->map_type,
   565			   map->key_size,
   566			   map->value_size,
   567			   map->max_entries,
   568			   map->map_flags,
 > 569			   bpf_map_memory_footprint(map),
   570			   map->id,
   571			   READ_ONCE(map->frozen));
   572		if (type) {
   573			seq_printf(m, "owner_prog_type:\t%u\n", type);
   574			seq_printf(m, "owner_jited:\t%u\n", jited);
   575		}
   576	}
   577	#endif
   578	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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