linux-kernel - Re: [PATCH] mm: kmemleak: Ignore kmemleak scanning on CMA regions

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Message-Id: <20211127160718.54e82aa93c977a367404a9e3@linux-foundation.org>
Date:   Sat, 27 Nov 2021 16:07:18 -0800
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Calvin Zhang <calvinzhang.cool@...il.com>
Cc:     Christoph Hellwig <hch@....de>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Robin Murphy <robin.murphy@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Catalin Marinas <catalin.marinas@....com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, iommu@...ts.linux-foundation.org
Subject: Re: [PATCH] mm: kmemleak: Ignore kmemleak scanning on CMA regions

On Fri, 26 Nov 2021 10:47:11 +0800 Calvin Zhang <calvinzhang.cool@...il.com> wrote:

> Just like this:
> commit 620951e27457 ("mm/cma: make kmemleak ignore CMA regions").
> 
> Add kmemleak_ignore_phys() for CMA created from of reserved node.

Could we please have a full, standalone changelog for this patch?

The 620951e27457 changelog says "Without this, the kernel crashes...". 
Does your patch also fix a crash?  If so under what circumstances and
should we backport this fix into -stable kernels?

Etcetera.