Re: [PATCH v2 3/5] kmemleak: account for tagged pointers when calculating pointer range

[Qian Cai]

On Wed, 2019-02-13 at 14:58 +0100, Andrey Konovalov wrote:
> kmemleak keeps two global variables, min_addr and max_addr, which store
> the range of valid (encountered by kmemleak) pointer values, which it
> later uses to speed up pointer lookup when scanning blocks.
> 
> With tagged pointers this range will get bigger than it needs to be.
> This patch makes kmemleak untag pointers before saving them to min_addr
> and max_addr and when performing a lookup.
> 
> Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>

Tested-by: Qian Cai <cai@xxxxxx>