[linux-next:master 13818/14024] mm/slub.c:5550:28: warning: passing argument 1 of '__do_kmalloc_node' makes pointer from integer without a cast

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   700f8f17ac2c84f94b7cf4420f306a23a5ddfd24
commit: ce190ed0166041cfab281967d46fe208f793a864 [13818/14024] mm/slab: introduce kmalloc_flags()
config: arm-randconfig-002-20260615 (https://download.01.org/0day-ci/archive/20260616/202606160125.fzducPRb-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260616/202606160125.fzducPRb-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/202606160125.fzducPRb-lkp@intel.com/

All warnings (new ones prefixed by >>):

   mm/slub.c: In function '__kmalloc_flags_noprof':
>> mm/slub.c:5550:28: warning: passing argument 1 of '__do_kmalloc_node' makes pointer from integer without a cast [-Wint-conversion]
      return __do_kmalloc_node(size, NULL, flags, node,
                               ^~~~
   mm/slub.c:5338:39: note: expected 'struct kmem_cache * (*)[14]' but argument is of type 'size_t' {aka 'unsigned int'}
    void *__do_kmalloc_node(kmem_buckets *b, gfp_t flags, int node,
                            ~~~~~~~~~~~~~~^
   In file included from include/uapi/linux/posix_types.h:5,
                    from include/uapi/linux/types.h:14,
                    from include/linux/types.h:5,
                    from include/linux/kasan-checks.h:5,
                    from include/asm-generic/rwonce.h:26,
                    from ./arch/arm/include/generated/asm/rwonce.h:1,
                    from include/linux/compiler.h:369,
                    from include/linux/export.h:5,
                    from include/linux/linkage.h:7,
                    from arch/arm/include/asm/bug.h:5,
                    from include/linux/bug.h:5,
                    from include/linux/mmdebug.h:5,
                    from include/linux/mm.h:7,
                    from mm/slub.c:15:
>> include/linux/stddef.h:8:14: warning: passing argument 2 of '__do_kmalloc_node' makes integer from pointer without a cast [-Wint-conversion]
    #define NULL ((void *)0)
                 ^~~~~~~~~~~
   mm/slub.c:5550:34: note: in expansion of macro 'NULL'
      return __do_kmalloc_node(size, NULL, flags, node,
                                     ^~~~
   mm/slub.c:5338:48: note: expected 'gfp_t' {aka 'unsigned int'} but argument is of type 'void *'
    void *__do_kmalloc_node(kmem_buckets *b, gfp_t flags, int node,
                                             ~~~~~~^~~~~
   mm/slub.c:5550:47: error: incompatible type for argument 4 of '__do_kmalloc_node'
      return __do_kmalloc_node(size, NULL, flags, node,
                                                  ^~~~
   mm/slub.c:5339:20: note: expected 'kmalloc_token_t' {aka 'struct <anonymous>'} but argument is of type 'int'
       kmalloc_token_t token, struct slab_alloc_context *ac)
       ~~~~~~~~~~~~~~~~^~~~~
   In file included from arch/arm/include/asm/pgtable-nommu.h:13,
                    from arch/arm/include/asm/pgtable.h:16,
                    from include/linux/pgtable.h:6,
                    from include/linux/mm.h:31,
                    from mm/slub.c:15:
   include/linux/slab.h:512:34: error: incompatible type for argument 5 of '__do_kmalloc_node'
    #define PASS_TOKEN_PARAM(_token) (_token)
                                     ^~~~~~~~
   mm/slub.c:5551:5: note: in expansion of macro 'PASS_TOKEN_PARAM'
        PASS_TOKEN_PARAM(token), &ac);
        ^~~~~~~~~~~~~~~~
   mm/slub.c:5339:54: note: expected 'struct slab_alloc_context *' but argument is of type 'kmalloc_token_t' {aka 'struct <anonymous>'}
       kmalloc_token_t token, struct slab_alloc_context *ac)
                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~
   mm/slub.c:5550:10: error: too many arguments to function '__do_kmalloc_node'
      return __do_kmalloc_node(size, NULL, flags, node,
             ^~~~~~~~~~~~~~~~~
   mm/slub.c:5338:7: note: declared here
    void *__do_kmalloc_node(kmem_buckets *b, gfp_t flags, int node,
          ^~~~~~~~~~~~~~~~~
   mm/slub.c:5556:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^


vim +/__do_kmalloc_node +5550 mm/slub.c

  5534	
  5535	/*
  5536	 * The only version of kmalloc_node() that takes alloc_flags and thus can
  5537	 * determine on its own whether to handle the allocation via kmalloc_nolock() or
  5538	 * normally
  5539	 */
  5540	void *__kmalloc_flags_noprof(DECL_TOKEN_PARAMS(size, token), gfp_t flags,
  5541				     unsigned int alloc_flags, int node)
  5542	{
  5543		struct slab_alloc_context ac = {
  5544			.caller_addr = _RET_IP_,
  5545			.orig_size = size,
  5546			.alloc_flags = alloc_flags,
  5547		};
  5548	
  5549		if (alloc_flags_allow_spinning(alloc_flags)) {
> 5550			return __do_kmalloc_node(size, NULL, flags, node,
  5551					PASS_TOKEN_PARAM(token), &ac);
  5552		} else {
  5553			return __kmalloc_nolock_noprof(PASS_TOKEN_PARAMS(size, token),
  5554						       flags, node, &ac);
  5555		}
  5556	}
  5557	

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