Re: mm: BUG in unmap_page_range

[Sasha Levin]

On 08/27/2014 11:26 AM, Mel Gorman wrote:
> diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
> index 281870f..ffea570 100644
> --- a/include/asm-generic/pgtable.h
> +++ b/include/asm-generic/pgtable.h
> @@ -723,6 +723,9 @@ static inline pte_t pte_mknuma(pte_t pte)
>  
>  	VM_BUG_ON(!(val & _PAGE_PRESENT));
>  
> +	/* debugging only, specific to x86 */
> +	VM_BUG_ON(val & _PAGE_PROTNONE);
> +
>  	val &= ~_PAGE_PRESENT;
>  	val |= _PAGE_NUMA;

Triggered again, the first VM_BUG_ON got hit, the second one never did.


Thanks,
Sasha
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