All of lore.kernel.org
 help / color / mirror / Atom feed
From: Michael Ellerman <mpe@ellerman.id.au>
To: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Cc: benh@kernel.crashing.org, paulus@samba.org,
	linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
	kernel-janitors@vger.kernel.org
Subject: Re: [PATCH v2] powerpc/mpc5xxx: Avoid dereferencing potentially freed memory
Date: Thu, 15 Oct 2015 17:36:17 +1100	[thread overview]
Message-ID: <1444890977.5970.4.camel@ellerman.id.au> (raw)
In-Reply-To: <1444888580-12966-1-git-send-email-christophe.jaillet@wanadoo.fr>

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@wanadoo.fr>
> ---
> v2: Use of_property_read_u32 instead of of_get_property+pointer dereference
> *** Untested ***

Thanks.

Can someone with an mpc5xxx test this?

cheers



WARNING: multiple messages have this Message-ID (diff)
From: Michael Ellerman <mpe@ellerman.id.au>
To: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Cc: benh@kernel.crashing.org, paulus@samba.org,
	linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
	kernel-janitors@vger.kernel.org
Subject: Re: [PATCH v2] powerpc/mpc5xxx: Avoid dereferencing potentially freed memory
Date: Thu, 15 Oct 2015 06:36:17 +0000	[thread overview]
Message-ID: <1444890977.5970.4.camel@ellerman.id.au> (raw)
In-Reply-To: <1444888580-12966-1-git-send-email-christophe.jaillet@wanadoo.fr>

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@wanadoo.fr>
> ---
> v2: Use of_property_read_u32 instead of of_get_property+pointer dereference
> *** Untested ***

Thanks.

Can someone with an mpc5xxx test this?

cheers



  reply	other threads:[~2015-10-15  6:36 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-11 20:27 [PATCH] powerpc/mpc5xxx: Use of_get_next_parent to simplify code Christophe JAILLET
2015-10-11 20:27 ` Christophe JAILLET
2015-10-11 20:44 ` Julia Lawall
2015-10-11 20:44   ` Julia Lawall
2015-10-12  5:05   ` Christophe JAILLET
2015-10-12  5:05     ` Christophe JAILLET
2015-10-14  4:00 ` Michael Ellerman
2015-10-14  4:00   ` Michael Ellerman
2015-10-15  5:56   ` [PATCH v2] powerpc/mpc5xxx: Avoid dereferencing potentially freed memory Christophe JAILLET
2015-10-15  5:56     ` Christophe JAILLET
2015-10-15  6:36     ` Michael Ellerman [this message]
2015-10-15  6:36       ` Michael Ellerman
2015-10-15  6:36       ` Michael Ellerman
2015-10-16  6:20       ` Christophe JAILLET
2015-10-16  6:20         ` Christophe JAILLET
2015-10-16  7:15         ` Gabriel Paubert
2015-10-16  7:15           ` Gabriel Paubert
2015-10-16  9:49         ` Michael Ellerman
2015-10-16  9:49           ` Michael Ellerman
2015-10-16  9:49           ` Michael Ellerman
2015-10-16 20:05           ` Christophe JAILLET
2015-10-16 20:05             ` Christophe JAILLET
2015-10-19  4:38             ` Michael Ellerman
2015-10-19  4:38               ` Michael Ellerman
2015-10-19  4:38               ` Michael Ellerman
2015-10-15 11:11 ` powerpc/mpc5xxx: Use of_get_next_parent to simplify code Michael Ellerman
2015-10-15 11:11   ` Michael Ellerman

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1444890977.5970.4.camel@ellerman.id.au \
    --to=mpe@ellerman.id.au \
    --cc=benh@kernel.crashing.org \
    --cc=christophe.jaillet@wanadoo.fr \
    --cc=kernel-janitors@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linuxppc-dev@lists.ozlabs.org \
    --cc=paulus@samba.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.