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@@ -3602,21 +3602,10 @@ EXPORT_SYMBOL(kmem_cache_alloc_notrace);
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*/
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int kmem_ptr_validate(struct kmem_cache *cachep, const void *ptr)
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{
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- unsigned long addr = (unsigned long)ptr;
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- unsigned long min_addr = PAGE_OFFSET;
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- unsigned long align_mask = BYTES_PER_WORD - 1;
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unsigned long size = cachep->buffer_size;
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struct page *page;
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- if (unlikely(addr < min_addr))
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- goto out;
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- if (unlikely(addr > (unsigned long)high_memory - size))
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- goto out;
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- if (unlikely(addr & align_mask))
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- goto out;
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- if (unlikely(!kern_addr_valid(addr)))
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- goto out;
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- if (unlikely(!kern_addr_valid(addr + size - 1)))
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+ if (unlikely(!kern_ptr_validate(ptr, size)))
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goto out;
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page = virt_to_page(ptr);
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if (unlikely(!PageSlab(page)))
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