Re: 9pfs double kfree

From: Al Viro
Date: Mon Mar 06 2006 - 02:27:10 EST


On Sun, Mar 05, 2006 at 11:07:11PM -0800, David S. Miller wrote:
> From: Dave Jones <davej@xxxxxxxxxx>
> Date: Mon, 6 Mar 2006 02:04:58 -0500
>
> > (I wish we had a kfree variant that NULL'd the target when it was free'd)
>
> Excellent idea.

ITYM "poison the pointer variable". Otherwise that sort of crap will go
unnoticed.
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