linux-kernel - Re: [PATCH] mm: ksize() should silently accept a NULL pointer

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Message-ID: <alpine.DEB.2.22.394.2006171621140.1574@www.lameter.com>
Date:   Wed, 17 Jun 2020 16:23:04 +0000 (UTC)
From:   Christopher Lameter <cl@...ux.com>
To:     William Kucharski <william.kucharski@...cle.com>
cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Pekka Enberg <penberg@...nel.org>,
        David Rientjes <rientjes@...gle.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] mm: ksize() should silently accept a NULL pointer

On Tue, 16 Jun 2020, William Kucharski wrote:

> Other mm routines such as kfree() and kzfree() silently do the right
> thing if passed a NULL pointer, so ksize() should do the same.

Ok so the size of an no object pointer is zero? Ignoring the freeing
of a nonexisting object makes sense. But determining it size?