linux-kernel - Re: kmalloc() with size zero

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Date:	Fri, 23 Mar 2007 02:38:25 +0100 (MET)
From:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
To:	Stephane Eranian <eranian@....hp.com>
cc:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org, ak@...e.de
Subject: Re: kmalloc() with size zero


On Mar 22 2007 16:18, Stephane Eranian wrote:
>
>Hello,
>
>I ran into an issue with perfmon where I ended up calling
>kmalloc() with a size of zero. To my surprise, this did
>not return NULL but a valid data address.
>
>I am wondering if this is a property of kmalloc() or simply
>a bug. It is the case that the __kmalloc() code does not
>check for zero size.

I'd say "feature", glibc's malloc also returns an address on malloc(0).


Jan
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