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Date:   Fri, 15 Feb 2019 14:07:49 +0000
From:   Catalin Marinas <catalin.marinas@arm.com>
To:     Andrey Konovalov <andreyknvl@google.com>
Cc:     Andrey Ryabinin <aryabinin@virtuozzo.com>,
        Alexander Potapenko <glider@google.com>,
        Dmitry Vyukov <dvyukov@google.com>,
        Christoph Lameter <cl@linux.com>,
        Pekka Enberg <penberg@kernel.org>,
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        Joonsoo Kim <iamjoonsoo.kim@lge.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        kasan-dev@googlegroups.com, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org, Qian Cai <cai@lca.pw>,
        Vincenzo Frascino <vincenzo.frascino@arm.com>,
        Kostya Serebryany <kcc@google.com>,
        Evgeniy Stepanov <eugenis@google.com>
Subject: Re: [PATCH v2 3/5] kmemleak: account for tagged pointers when
 calculating pointer range
Message-ID: <20190215140748.GE100037@arrakis.emea.arm.com>
References: <cover.1550066133.git.andreyknvl@google.com>
 <16e887d442986ab87fe87a755815ad92fa431a5f.1550066133.git.andreyknvl@google.com>
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On Wed, Feb 13, 2019 at 02:58:28PM +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@google.com>

I reviewed the old series. This patch also looks fine:

Acked-by: Catalin Marinas <catalin.marinas@arm.com>