Re: [PATCH 1/2] mm/zsmalloc.c: check encoded object value overflow for PAE

[Sergey Senozhatsky]

On (10/24/18 22:27), Rafael David Tinoco wrote:
>  static unsigned long location_to_obj(struct page *page, unsigned int obj_idx)
>  {
> -	unsigned long obj;
> +	unsigned long obj, pfn;
> +
> +	pfn = page_to_pfn(page);
> +
> +	if (unlikely(OBJ_OVERFLOW(pfn)))
> +		BUG();

The trend these days is to have less BUG/BUG_ON-s in the kernel.

	-ss