[openeuler:OLK-5.10 2441/2441] mm/kasan/common.c:471:16: error: void value not ignored as it ought to be

[openeuler:OLK-5.10 2441/2441] mm/kasan/common.c:471:16: error: void value not ignored as it ought to be

[kernel test robot]

tree:   https://gitee.com/openeuler/kernel.git OLK-5.10
head:   a2b4d661a5ca59dd7cf972c1cce8b98422102ab7
commit: d5ddd7080c7442f22d6b92d6fed0dacc606013d1 [2441/2441] kasan: sanitize objects when metadata doesn't fit
config: arm64-randconfig-003-20241118 (https://download.01.org/0day-ci/archive/20241201/202412011647.JJxaTRfd-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241201/202412011647.JJxaTRfd-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/202412011647.JJxaTRfd-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from mm/kasan/common.c:40:
   mm/kasan/kasan.h: In function 'quarantine_put':
   mm/kasan/kasan.h:198:84: warning: 'return' with a value, in function returning void [-Wreturn-mismatch]
     198 | static inline void quarantine_put(struct kmem_cache *cache, void *object) { return false; }
         |                                                                                    ^~~~~
   mm/kasan/kasan.h:198:20: note: declared here
     198 | static inline void quarantine_put(struct kmem_cache *cache, void *object) { return false; }
         |                    ^~~~~~~~~~~~~~
   mm/kasan/common.c: In function '__kasan_slab_free':
>> mm/kasan/common.c:471:16: error: void value not ignored as it ought to be
     471 |         return quarantine_put(cache, object);
         |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   mm/kasan/common.c:472:1: warning: control reaches end of non-void function [-Wreturn-type]
     472 | }
         | ^


vim +471 mm/kasan/common.c

   431	
   432	static bool __kasan_slab_free(struct kmem_cache *cache, void *object,
   433				      unsigned long ip, bool quarantine)
   434	{
   435		s8 shadow_byte;
   436		u8 tag;
   437		void *tagged_object;
   438		unsigned long rounded_up_size;
   439	
   440		tag = get_tag(object);
   441		tagged_object = object;
   442		object = reset_tag(object);
   443	
   444		if (is_kfence_address(object))
   445			return false;
   446	
   447		if (unlikely(nearest_obj(cache, virt_to_head_page(object), object) !=
   448		    object)) {
   449			kasan_report_invalid_free(tagged_object, ip);
   450			return true;
   451		}
   452	
   453		/* RCU slabs could be legally used after free within the RCU period */
   454		if (unlikely(cache->flags & SLAB_TYPESAFE_BY_RCU))
   455			return false;
   456	
   457		shadow_byte = READ_ONCE(*(s8 *)kasan_mem_to_shadow(object));
   458		if (shadow_invalid(tag, shadow_byte)) {
   459			kasan_report_invalid_free(tagged_object, ip);
   460			return true;
   461		}
   462	
   463		rounded_up_size = round_up(cache->object_size, KASAN_SHADOW_SCALE_SIZE);
   464		kasan_poison_shadow(object, rounded_up_size, KASAN_KMALLOC_FREE);
   465	
   466		if ((IS_ENABLED(CONFIG_KASAN_GENERIC) && !quarantine))
   467			return false;
   468	
   469		kasan_set_free_info(cache, object, tag);
   470	
 > 471		return quarantine_put(cache, object);
   472	}
   473	

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