On 07/09/2014 04:29 AM, Andrey Ryabinin wrote:
> Address sanitizer dedicates 1/8 of the low memory to the shadow memory and
> uses direct
> mapping with a scale and offset to translate a memory address to its
> corresponding
> shadow address.
>
> Here is function to translate address to corresponding shadow address:
>
> unsigned long kasan_mem_to_shadow(unsigned long addr)
> {
> return ((addr - PAGE_OFFSET) >> KASAN_SHADOW_SCALE_SHIFT)
> + kasan_shadow_start;
> }
How does this interact with vmalloc() addresses or those from a kmap()?
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