From: Philipp Zabel <p.zabel@pengutronix.de>
To: Steve Longerbeam <slongerbeam@gmail.com>, linux-media@vger.kernel.org
Cc: "open list:STAGING SUBSYSTEM" <devel@driverdev.osuosl.org>,
Fabio Estevam <festevam@gmail.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
open list <linux-kernel@vger.kernel.org>,
NXP Linux Team <linux-imx@nxp.com>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Shawn Guo <shawnguo@kernel.org>,
"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH] media: staging/imx: Fix NULL deref in find_pipeline_entity()
Date: Thu, 27 Jun 2019 08:33:49 +0200 [thread overview]
Message-ID: <1561617229.4216.1.camel@pengutronix.de> (raw)
In-Reply-To: <20190626185225.11992-1-slongerbeam@gmail.com>
On Wed, 2019-06-26 at 11:52 -0700, Steve Longerbeam wrote:
> Fix a cut&paste error in find_pipeline_entity(). The start entity must be
> passed to media_entity_to_video_device() in find_pipeline_entity(), not
> pad->entity. The pad is only put to use later, after determining the start
> entity is not the entity being searched for.
>
> Fixes: 3ef46bc97ca2 ("media: staging/imx: Improve pipeline searching")
>
> Reported-by: Colin Ian King <colin.king@canonical.com>
> Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
> ---
> drivers/staging/media/imx/imx-media-utils.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/staging/media/imx/imx-media-utils.c b/drivers/staging/media/imx/imx-media-utils.c
> index b5b8a3b7730a..6fb88c22ee27 100644
> --- a/drivers/staging/media/imx/imx-media-utils.c
> +++ b/drivers/staging/media/imx/imx-media-utils.c
> @@ -842,7 +842,7 @@ find_pipeline_entity(struct media_entity *start, u32 grp_id,
> if (sd->grp_id & grp_id)
> return &sd->entity;
> } else if (buftype && is_media_entity_v4l2_video_device(start)) {
> - vfd = media_entity_to_video_device(pad->entity);
> + vfd = media_entity_to_video_device(start);
> if (buftype == vfd->queue->type)
> return &vfd->entity;
> }
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
regards
Philipp
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next prev parent reply other threads:[~2019-06-27 6:34 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-26 18:52 [PATCH] media: staging/imx: Fix NULL deref in find_pipeline_entity() Steve Longerbeam
2019-06-27 6:33 ` Philipp Zabel [this message]
2019-06-27 7:04 ` Dan Carpenter
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