linux-kernel - Re: [PATCH v2] powerpc/mpc5xxx: Avoid dereferencing potentially freed memory

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Message-ID: <1444890977.5970.4.camel@ellerman.id.au>
Date:	Thu, 15 Oct 2015 17:36:17 +1100
From:	Michael Ellerman <mpe@...erman.id.au>
To:	Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:	benh@...nel.crashing.org, paulus@...ba.org,
	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: Re: [PATCH v2] powerpc/mpc5xxx: Avoid dereferencing potentially
 freed memory

On Thu, 2015-10-15 at 07:56 +0200, Christophe JAILLET wrote:
> Use 'of_property_read_u32()' instead of 'of_get_property()'+pointer
> dereference in order to avoid access to potentially freed memory.
> 
> Use 'of_get_next_parent()' to simplify the while() loop and avoid the
> need of a temp variable.
> 
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> ---
> v2: Use of_property_read_u32 instead of of_get_property+pointer dereference
> *** Untested ***

Thanks.

Can someone with an mpc5xxx test this?

cheers


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