tree:   git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   1c9e4561f3b2afffcda007eae9d0ddd25525f50e
commit: 6e162b4c49f7fad5a82d57c8fa4afc4c7103e1f8 [2111/2346] mem-hotplug: let memblock skip the hotpluggable memory regions in __next_mem_range()
config: i386-randconfig-ib1-08262029 (attached as .config)

All warnings:

   mm/nobootmem.c: In function 'free_low_memory_core_early':
>> mm/nobootmem.c:122:2: warning: large integer implicitly truncated to unsigned type [-Woverflow]
     memblock_clear_hotplug(0, ULLONG_MAX);
     ^

vim +122 mm/nobootmem.c

   106					      PFN_DOWN(end), max_low_pfn);
   107	
   108		if (start_pfn > end_pfn)
   109			return 0;
   110	
   111		__free_pages_memory(start_pfn, end_pfn);
   112	
   113		return end_pfn - start_pfn;
   114	}
   115	
   116	static unsigned long __init free_low_memory_core_early(void)
   117	{
   118		unsigned long count = 0;
   119		phys_addr_t start, end;
   120		u64 i;
   121	
 > 122		memblock_clear_hotplug(0, ULLONG_MAX);
   123	
   124		for_each_free_mem_range(i, NUMA_NO_NODE, &start, &end, NULL)
   125			count += __free_memory_core(start, end);
   126	
   127	#ifdef CONFIG_ARCH_DISCARD_MEMBLOCK
   128		{
   129			phys_addr_t size;
   130	

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