linux-kernel - kmalloc() with size zero

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Message-ID: <20070323001824.GA26540@frankl.hpl.hp.com>
Date:	Thu, 22 Mar 2007 16:18:24 -0800
From:	Stephane Eranian <eranian@....hp.com>
To:	linux-kernel@...r.kernel.org
Cc:	akpm@...ux-foundation.org, ak@...e.de
Subject: kmalloc() with size zero

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.

Thanks,

-- 

-Stephane
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