linux-kernel - Re: [PATCH 2/3] clk: Prevent a hanging pointer being abused

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Message-ID: <20140730122012.GB13965@amd.pavel.ucw.cz>
Date:	Wed, 30 Jul 2014 14:20:12 +0200
From:	Pavel Machek <pavel@...x.de>
To:	Charles Manning <cdhmanning@...il.com>
Cc:	linux-kernel@...r.kernel.org, s.trumtrar@...gutronix.de,
	dinguyen@...era.com, cslee@...era.com
Subject: Re: [PATCH 2/3] clk: Prevent a hanging pointer being abused

On Tue 2014-07-22 14:20:33, Charles Manning wrote:
> Clock init structs are normally created on the stack.
> 
> If the pointer is left intact after clk_register then there is
> opportunity for clk drivers to dereference the pointer.
> 
> This was causing a problem in socfpga/clk.c for instance.
> 
> Better to NULL out the pointer so it can't be abused.
> 
> Signed-off-by: Charles Manning <cdhmanning@...il.com>

Acked-by: Pavel Machek <pavel@...x.de>

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