linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Greg KH <gregkh@linuxfoundation.org>
To: Amit Pundir <amit.pundir@linaro.org>
Cc: Stable <stable@vger.kernel.org>, Wen Yang <wen.yang99@zte.com.cn>,
	"David S. Miller" <davem@davemloft.net>,
	Thomas Gleixner <tglx@linutronix.de>,
	Allison Randal <allison@lohutok.net>,
	Armijn Hemel <armijn@tjaldur.nl>,
	Julia Lawall <Julia.Lawall@lip6.fr>,
	linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
	Herbert Xu <herbert@gondor.apana.org.au>
Subject: Re: [PATCH for-4.14.y 3/3] crypto: crypto4xx - fix a potential double free in ppc4xx_trng_probe
Date: Wed, 31 Jul 2019 11:44:37 +0200	[thread overview]
Message-ID: <20190731094437.GF18269@kroah.com> (raw)
In-Reply-To: <1564517913-17164-3-git-send-email-amit.pundir@linaro.org>

On Wed, Jul 31, 2019 at 01:48:33AM +0530, Amit Pundir wrote:
> From: Wen Yang <wen.yang99@zte.com.cn>
> 
> commit 95566aa75cd6b3b404502c06f66956b5481194b3 upstream.
> 
> There is a possible double free issue in ppc4xx_trng_probe():
> 
> 85:	dev->trng_base = of_iomap(trng, 0);
> 86:	of_node_put(trng);          ---> released here
> 87:	if (!dev->trng_base)
> 88:		goto err_out;
> ...
> 110:	ierr_out:
> 111:		of_node_put(trng);  ---> double released here
> ...
> 
> This issue was detected by using the Coccinelle software.
> We fix it by removing the unnecessary of_node_put().
> 
> Fixes: 5343e674f32f ("crypto4xx: integrate ppc4xx-rng into crypto4xx")
> Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
> Cc: <stable@vger.kernel.org>
> Cc: "David S. Miller" <davem@davemloft.net>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: Allison Randal <allison@lohutok.net>
> Cc: Armijn Hemel <armijn@tjaldur.nl>
> Cc: Julia Lawall <Julia.Lawall@lip6.fr>
> Cc: linux-crypto@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
> Acked-by: Julia Lawall <julia.lawall@lip6.fr>
> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
> Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
> ---
> Cleanly apply on 4.9.y as well.

This is already in the 4.14.135 kernel release.  Are you sure we need it
there again?

thanks,

greg k-h

      reply	other threads:[~2019-07-31  9:44 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1564517913-17164-1-git-send-email-amit.pundir@linaro.org>
2019-07-30 20:18 ` Amit Pundir
2019-07-31  9:44   ` Greg KH [this message]

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=20190731094437.GF18269@kroah.com \
    --to=gregkh@linuxfoundation.org \
    --cc=Julia.Lawall@lip6.fr \
    --cc=allison@lohutok.net \
    --cc=amit.pundir@linaro.org \
    --cc=armijn@tjaldur.nl \
    --cc=davem@davemloft.net \
    --cc=herbert@gondor.apana.org.au \
    --cc=linux-crypto@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=stable@vger.kernel.org \
    --cc=tglx@linutronix.de \
    --cc=wen.yang99@zte.com.cn \
    --subject='Re: [PATCH for-4.14.y 3/3] crypto: crypto4xx - fix a potential double free in ppc4xx_trng_probe' \
    /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

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).