linux-kernel - Re: [PATCH v2 1/1] mm: kfence: apply kmemleak_ignore

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Message-ID: <YrzGlSUtnXuiuUEK@arm.com>
Date:   Wed, 29 Jun 2022 22:39:33 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     yee.lee@...iatek.com
Cc:     linux-kernel@...r.kernel.org,
        Alexander Potapenko <glider@...gle.com>,
        Marco Elver <elver@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        "open list:KFENCE" <kasan-dev@...glegroups.com>,
        "open list:MEMORY MANAGEMENT" <linux-mm@...ck.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>
Subject: Re: [PATCH v2 1/1] mm: kfence: apply kmemleak_ignore_phys on early
 allocated pool

On Tue, Jun 28, 2022 at 07:37:11PM +0800, yee.lee@...iatek.com wrote:
> From: Yee Lee <yee.lee@...iatek.com>
> 
> This patch solves two issues.
> 
> (1) The pool allocated by memblock needs to unregister from
> kmemleak scanning. Apply kmemleak_ignore_phys to replace the
> original kmemleak_free as its address now is stored in the phys tree.
> 
> (2) The pool late allocated by page-alloc doesn't need to unregister.
> Move out the freeing operation from its call path.
> 
> Suggested-by: Catalin Marinas <catalin.marinas@....com>
> Suggested-by: Marco Elver <elver@...gle.com>
> Signed-off-by: Yee Lee <yee.lee@...iatek.com>

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