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* [PATCH] media: rkisp1: rsz: crash fix when setting src format
@ 2020-12-09 16:15 ` Dafna Hirschfeld
  0 siblings, 0 replies; 8+ messages in thread
From: Dafna Hirschfeld @ 2020-12-09 16:15 UTC (permalink / raw)
  To: linux-media
  Cc: laurent.pinchart, dafna.hirschfeld, helen.koike, ezequiel,
	hverkuil, kernel, dafna3, sakari.ailus, linux-rockchip, mchehab,
	tfiga

When setting the source media bus code in the resizer,
we first check that the current media bus code in the
source is yuv encoded format. This is done by
retrieving the data from the formats list of the isp
entity. This cause a crash when the media bus code on the
source is YUYV8_1_5X8 which is not supported by the isp
entity. Instead we should test the sink format of the resizer
which is guaranteed to be supported by the isp entity.

Fixes: 251b6eebb6c49 ("media: staging: rkisp1: rsz: Add support to more YUV encoded mbus codes on src pad")
Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
---
 drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
index 813670ed9577..79deed8adcea 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
@@ -520,14 +520,15 @@ static void rkisp1_rsz_set_src_fmt(struct rkisp1_resizer *rsz,
 				   struct v4l2_mbus_framefmt *format,
 				   unsigned int which)
 {
-	const struct rkisp1_isp_mbus_info *mbus_info;
-	struct v4l2_mbus_framefmt *src_fmt;
+	const struct rkisp1_isp_mbus_info *sink_mbus_info;
+	struct v4l2_mbus_framefmt *src_fmt, *sink_fmt;
 
+	sink_fmt = rkisp1_rsz_get_pad_fmt(rsz, cfg, RKISP1_RSZ_PAD_SINK, which);
 	src_fmt = rkisp1_rsz_get_pad_fmt(rsz, cfg, RKISP1_RSZ_PAD_SRC, which);
-	mbus_info = rkisp1_isp_mbus_info_get(src_fmt->code);
+	sink_mbus_info = rkisp1_isp_mbus_info_get(sink_fmt->code);
 
 	/* for YUV formats, userspace can change the mbus code on the src pad if it is supported */
-	if (mbus_info->pixel_enc == V4L2_PIXEL_ENC_YUV &&
+	if (sink_mbus_info->pixel_enc == V4L2_PIXEL_ENC_YUV &&
 	    rkisp1_rsz_get_yuv_mbus_info(format->code))
 		src_fmt->code = format->code;
 
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 8+ messages in thread
* [PATCH] media: rkisp1: rsz: crash fix when setting src format
@ 2020-12-09 16:15 ` Dafna Hirschfeld
  0 siblings, 0 replies; 8+ messages in thread
From: Dafna Hirschfeld @ 2020-12-09 16:15 UTC (permalink / raw)
  To: linux-media
  Cc: mchehab, dafna.hirschfeld, dafna3, tfiga, hverkuil,
	linux-rockchip, helen.koike, laurent.pinchart, sakari.ailus,
	kernel, ezequiel

When setting the source media bus code in the resizer,
we first check that the current media bus code in the
source is yuv encoded format. This is done by
retrieving the data from the formats list of the isp
entity. This cause a crash when the media bus code on the
source is YUYV8_1_5X8 which is not supported by the isp
entity. Instead we should test the sink format of the resizer
which is guaranteed to be supported by the isp entity.

Fixes: 251b6eebb6c49 ("media: staging: rkisp1: rsz: Add support to more YUV encoded mbus codes on src pad")
Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
---
 drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
index 813670ed9577..79deed8adcea 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
@@ -520,14 +520,15 @@ static void rkisp1_rsz_set_src_fmt(struct rkisp1_resizer *rsz,
 				   struct v4l2_mbus_framefmt *format,
 				   unsigned int which)
 {
-	const struct rkisp1_isp_mbus_info *mbus_info;
-	struct v4l2_mbus_framefmt *src_fmt;
+	const struct rkisp1_isp_mbus_info *sink_mbus_info;
+	struct v4l2_mbus_framefmt *src_fmt, *sink_fmt;
 
+	sink_fmt = rkisp1_rsz_get_pad_fmt(rsz, cfg, RKISP1_RSZ_PAD_SINK, which);
 	src_fmt = rkisp1_rsz_get_pad_fmt(rsz, cfg, RKISP1_RSZ_PAD_SRC, which);
-	mbus_info = rkisp1_isp_mbus_info_get(src_fmt->code);
+	sink_mbus_info = rkisp1_isp_mbus_info_get(sink_fmt->code);
 
 	/* for YUV formats, userspace can change the mbus code on the src pad if it is supported */
-	if (mbus_info->pixel_enc == V4L2_PIXEL_ENC_YUV &&
+	if (sink_mbus_info->pixel_enc == V4L2_PIXEL_ENC_YUV &&
 	    rkisp1_rsz_get_yuv_mbus_info(format->code))
 		src_fmt->code = format->code;
 
-- 
2.17.1


_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip

^ permalink raw reply related	[flat|nested] 8+ messages in thread
* Re: [PATCH] media: rkisp1: rsz: crash fix when setting src format
  2020-12-09 16:15 ` Dafna Hirschfeld
@ 2020-12-09 16:53   ` Helen Koike
  -1 siblings, 0 replies; 8+ messages in thread
From: Helen Koike @ 2020-12-09 16:53 UTC (permalink / raw)
  To: Dafna Hirschfeld, linux-media
  Cc: laurent.pinchart, ezequiel, hverkuil, kernel, dafna3,
	sakari.ailus, linux-rockchip, mchehab, tfiga



On 12/9/20 1:15 PM, Dafna Hirschfeld wrote:
> When setting the source media bus code in the resizer,
> we first check that the current media bus code in the
> source is yuv encoded format. This is done by
> retrieving the data from the formats list of the isp
> entity. This cause a crash when the media bus code on the
> source is YUYV8_1_5X8 which is not supported by the isp
> entity. Instead we should test the sink format of the resizer
> which is guaranteed to be supported by the isp entity.
> 
> Fixes: 251b6eebb6c49 ("media: staging: rkisp1: rsz: Add support to more YUV encoded mbus codes on src pad")
> Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>

Acked-by: Helen Koike <helen.koike@collabora.com>

Thanks
Helen

> ---
>  drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c | 9 +++++----
>  1 file changed, 5 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
> index 813670ed9577..79deed8adcea 100644
> --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
> +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
> @@ -520,14 +520,15 @@ static void rkisp1_rsz_set_src_fmt(struct rkisp1_resizer *rsz,
>  				   struct v4l2_mbus_framefmt *format,
>  				   unsigned int which)
>  {
> -	const struct rkisp1_isp_mbus_info *mbus_info;
> -	struct v4l2_mbus_framefmt *src_fmt;
> +	const struct rkisp1_isp_mbus_info *sink_mbus_info;
> +	struct v4l2_mbus_framefmt *src_fmt, *sink_fmt;
>  
> +	sink_fmt = rkisp1_rsz_get_pad_fmt(rsz, cfg, RKISP1_RSZ_PAD_SINK, which);
>  	src_fmt = rkisp1_rsz_get_pad_fmt(rsz, cfg, RKISP1_RSZ_PAD_SRC, which);
> -	mbus_info = rkisp1_isp_mbus_info_get(src_fmt->code);
> +	sink_mbus_info = rkisp1_isp_mbus_info_get(sink_fmt->code);
>  
>  	/* for YUV formats, userspace can change the mbus code on the src pad if it is supported */
> -	if (mbus_info->pixel_enc == V4L2_PIXEL_ENC_YUV &&
> +	if (sink_mbus_info->pixel_enc == V4L2_PIXEL_ENC_YUV &&
>  	    rkisp1_rsz_get_yuv_mbus_info(format->code))
>  		src_fmt->code = format->code;
>  
> 

^ permalink raw reply	[flat|nested] 8+ messages in thread
* Re: [PATCH] media: rkisp1: rsz: crash fix when setting src format
@ 2020-12-09 16:53   ` Helen Koike
  0 siblings, 0 replies; 8+ messages in thread
From: Helen Koike @ 2020-12-09 16:53 UTC (permalink / raw)
  To: Dafna Hirschfeld, linux-media
  Cc: mchehab, dafna3, tfiga, hverkuil, linux-rockchip,
	laurent.pinchart, sakari.ailus, kernel, ezequiel



On 12/9/20 1:15 PM, Dafna Hirschfeld wrote:
> When setting the source media bus code in the resizer,
> we first check that the current media bus code in the
> source is yuv encoded format. This is done by
> retrieving the data from the formats list of the isp
> entity. This cause a crash when the media bus code on the
> source is YUYV8_1_5X8 which is not supported by the isp
> entity. Instead we should test the sink format of the resizer
> which is guaranteed to be supported by the isp entity.
> 
> Fixes: 251b6eebb6c49 ("media: staging: rkisp1: rsz: Add support to more YUV encoded mbus codes on src pad")
> Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>

Acked-by: Helen Koike <helen.koike@collabora.com>

Thanks
Helen

> ---
>  drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c | 9 +++++----
>  1 file changed, 5 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
> index 813670ed9577..79deed8adcea 100644
> --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
> +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
> @@ -520,14 +520,15 @@ static void rkisp1_rsz_set_src_fmt(struct rkisp1_resizer *rsz,
>  				   struct v4l2_mbus_framefmt *format,
>  				   unsigned int which)
>  {
> -	const struct rkisp1_isp_mbus_info *mbus_info;
> -	struct v4l2_mbus_framefmt *src_fmt;
> +	const struct rkisp1_isp_mbus_info *sink_mbus_info;
> +	struct v4l2_mbus_framefmt *src_fmt, *sink_fmt;
>  
> +	sink_fmt = rkisp1_rsz_get_pad_fmt(rsz, cfg, RKISP1_RSZ_PAD_SINK, which);
>  	src_fmt = rkisp1_rsz_get_pad_fmt(rsz, cfg, RKISP1_RSZ_PAD_SRC, which);
> -	mbus_info = rkisp1_isp_mbus_info_get(src_fmt->code);
> +	sink_mbus_info = rkisp1_isp_mbus_info_get(sink_fmt->code);
>  
>  	/* for YUV formats, userspace can change the mbus code on the src pad if it is supported */
> -	if (mbus_info->pixel_enc == V4L2_PIXEL_ENC_YUV &&
> +	if (sink_mbus_info->pixel_enc == V4L2_PIXEL_ENC_YUV &&
>  	    rkisp1_rsz_get_yuv_mbus_info(format->code))
>  		src_fmt->code = format->code;
>  
> 

_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip

^ permalink raw reply	[flat|nested] 8+ messages in thread
* Re: [PATCH] media: rkisp1: rsz: crash fix when setting src format
  2020-12-09 16:15 ` Dafna Hirschfeld
@ 2020-12-09 19:13   ` Sebastian Fricke
  -1 siblings, 0 replies; 8+ messages in thread
From: Sebastian Fricke @ 2020-12-09 19:13 UTC (permalink / raw)
  To: Dafna Hirschfeld
  Cc: linux-media, laurent.pinchart, helen.koike, ezequiel, hverkuil,
	kernel, dafna3, sakari.ailus, linux-rockchip, mchehab, tfiga

Hey Dafna,

Thanks for the patch, I quickly tested it and did some proofreading.

I was able to recreate the crash with following commands:

"media-ctl" "-d" "platform:rkisp1" "--set-v4l2" '"rkisp1_resizer_mainpath":1 [fmt:YUYV8_1_5X8/900x800]'
"media-ctl" "-d" "platform:rkisp1" "--set-v4l2" '"rkisp1_resizer_mainpath":1 [fmt:YUYV8_2X8/900x800]'

# This causes the crash:
"Unable to handle kernel NULL pointer dereference at virtual address 0000000000000004"

This patch fixed the problem.

On 09.12.2020 17:15, Dafna Hirschfeld wrote:
>When setting the source media bus code in the resizer,
>we first check that the current media bus code in the
>source is yuv encoded format. This is done by

s/is/is a/

>retrieving the data from the formats list of the isp
>entity. This cause a crash when the media bus code on the

s/cause/causes/

>source is YUYV8_1_5X8 which is not supported by the isp
>entity. Instead we should test the sink format of the resizer
>which is guaranteed to be supported by the isp entity.
>
>Fixes: 251b6eebb6c49 ("media: staging: rkisp1: rsz: Add support to more YUV encoded mbus codes on src pad")
>Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Tested-by: Sebastian Fricke <sebastian.fricke.linux@gmail.com>

>---
> drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c | 9 +++++----
> 1 file changed, 5 insertions(+), 4 deletions(-)
>
>diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
>index 813670ed9577..79deed8adcea 100644
>--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
>+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
>@@ -520,14 +520,15 @@ static void rkisp1_rsz_set_src_fmt(struct rkisp1_resizer *rsz,
> 				   struct v4l2_mbus_framefmt *format,
> 				   unsigned int which)
> {
>-	const struct rkisp1_isp_mbus_info *mbus_info;
>-	struct v4l2_mbus_framefmt *src_fmt;
>+	const struct rkisp1_isp_mbus_info *sink_mbus_info;
>+	struct v4l2_mbus_framefmt *src_fmt, *sink_fmt;
>
>+	sink_fmt = rkisp1_rsz_get_pad_fmt(rsz, cfg, RKISP1_RSZ_PAD_SINK, which);
> 	src_fmt = rkisp1_rsz_get_pad_fmt(rsz, cfg, RKISP1_RSZ_PAD_SRC, which);
>-	mbus_info = rkisp1_isp_mbus_info_get(src_fmt->code);
>+	sink_mbus_info = rkisp1_isp_mbus_info_get(sink_fmt->code);
>
> 	/* for YUV formats, userspace can change the mbus code on the src pad if it is supported */
>-	if (mbus_info->pixel_enc == V4L2_PIXEL_ENC_YUV &&
>+	if (sink_mbus_info->pixel_enc == V4L2_PIXEL_ENC_YUV &&
> 	    rkisp1_rsz_get_yuv_mbus_info(format->code))
> 		src_fmt->code = format->code;
>
>-- 
>2.17.1
>

^ permalink raw reply	[flat|nested] 8+ messages in thread
* Re: [PATCH] media: rkisp1: rsz: crash fix when setting src format
@ 2020-12-09 19:13   ` Sebastian Fricke
  0 siblings, 0 replies; 8+ messages in thread
From: Sebastian Fricke @ 2020-12-09 19:13 UTC (permalink / raw)
  To: Dafna Hirschfeld
  Cc: mchehab, dafna3, tfiga, hverkuil, linux-rockchip, helen.koike,
	laurent.pinchart, sakari.ailus, kernel, ezequiel, linux-media

Hey Dafna,

Thanks for the patch, I quickly tested it and did some proofreading.

I was able to recreate the crash with following commands:

"media-ctl" "-d" "platform:rkisp1" "--set-v4l2" '"rkisp1_resizer_mainpath":1 [fmt:YUYV8_1_5X8/900x800]'
"media-ctl" "-d" "platform:rkisp1" "--set-v4l2" '"rkisp1_resizer_mainpath":1 [fmt:YUYV8_2X8/900x800]'

# This causes the crash:
"Unable to handle kernel NULL pointer dereference at virtual address 0000000000000004"

This patch fixed the problem.

On 09.12.2020 17:15, Dafna Hirschfeld wrote:
>When setting the source media bus code in the resizer,
>we first check that the current media bus code in the
>source is yuv encoded format. This is done by

s/is/is a/

>retrieving the data from the formats list of the isp
>entity. This cause a crash when the media bus code on the

s/cause/causes/

>source is YUYV8_1_5X8 which is not supported by the isp
>entity. Instead we should test the sink format of the resizer
>which is guaranteed to be supported by the isp entity.
>
>Fixes: 251b6eebb6c49 ("media: staging: rkisp1: rsz: Add support to more YUV encoded mbus codes on src pad")
>Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Tested-by: Sebastian Fricke <sebastian.fricke.linux@gmail.com>

>---
> drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c | 9 +++++----
> 1 file changed, 5 insertions(+), 4 deletions(-)
>
>diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
>index 813670ed9577..79deed8adcea 100644
>--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
>+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
>@@ -520,14 +520,15 @@ static void rkisp1_rsz_set_src_fmt(struct rkisp1_resizer *rsz,
> 				   struct v4l2_mbus_framefmt *format,
> 				   unsigned int which)
> {
>-	const struct rkisp1_isp_mbus_info *mbus_info;
>-	struct v4l2_mbus_framefmt *src_fmt;
>+	const struct rkisp1_isp_mbus_info *sink_mbus_info;
>+	struct v4l2_mbus_framefmt *src_fmt, *sink_fmt;
>
>+	sink_fmt = rkisp1_rsz_get_pad_fmt(rsz, cfg, RKISP1_RSZ_PAD_SINK, which);
> 	src_fmt = rkisp1_rsz_get_pad_fmt(rsz, cfg, RKISP1_RSZ_PAD_SRC, which);
>-	mbus_info = rkisp1_isp_mbus_info_get(src_fmt->code);
>+	sink_mbus_info = rkisp1_isp_mbus_info_get(sink_fmt->code);
>
> 	/* for YUV formats, userspace can change the mbus code on the src pad if it is supported */
>-	if (mbus_info->pixel_enc == V4L2_PIXEL_ENC_YUV &&
>+	if (sink_mbus_info->pixel_enc == V4L2_PIXEL_ENC_YUV &&
> 	    rkisp1_rsz_get_yuv_mbus_info(format->code))
> 		src_fmt->code = format->code;
>
>-- 
>2.17.1
>

_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip

^ permalink raw reply	[flat|nested] 8+ messages in thread
* Re: [PATCH] media: rkisp1: rsz: crash fix when setting src format
  2020-12-09 16:15 ` Dafna Hirschfeld
@ 2021-02-10  6:09   ` Tomasz Figa
  -1 siblings, 0 replies; 8+ messages in thread
From: Tomasz Figa @ 2021-02-10  6:09 UTC (permalink / raw)
  To: Dafna Hirschfeld, Mauro Carvalho Chehab
  Cc: Linux Media Mailing List, Laurent Pinchart, Helen Koike,
	Ezequiel Garcia, Hans Verkuil, Collabora Kernel ML,
	Dafna Hirschfeld, Sakari Ailus, open list:ARM/Rockchip SoC...

On Thu, Dec 10, 2020 at 1:15 AM Dafna Hirschfeld
<dafna.hirschfeld@collabora.com> wrote:
>
> When setting the source media bus code in the resizer,
> we first check that the current media bus code in the
> source is yuv encoded format. This is done by
> retrieving the data from the formats list of the isp
> entity. This cause a crash when the media bus code on the
> source is YUYV8_1_5X8 which is not supported by the isp
> entity. Instead we should test the sink format of the resizer
> which is guaranteed to be supported by the isp entity.
>
> Fixes: 251b6eebb6c49 ("media: staging: rkisp1: rsz: Add support to more YUV encoded mbus codes on src pad")
> Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
> ---
>  drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c | 9 +++++----
>  1 file changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
> index 813670ed9577..79deed8adcea 100644
> --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
> +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
> @@ -520,14 +520,15 @@ static void rkisp1_rsz_set_src_fmt(struct rkisp1_resizer *rsz,
>                                    struct v4l2_mbus_framefmt *format,
>                                    unsigned int which)
>  {
> -       const struct rkisp1_isp_mbus_info *mbus_info;
> -       struct v4l2_mbus_framefmt *src_fmt;
> +       const struct rkisp1_isp_mbus_info *sink_mbus_info;
> +       struct v4l2_mbus_framefmt *src_fmt, *sink_fmt;
>
> +       sink_fmt = rkisp1_rsz_get_pad_fmt(rsz, cfg, RKISP1_RSZ_PAD_SINK, which);
>         src_fmt = rkisp1_rsz_get_pad_fmt(rsz, cfg, RKISP1_RSZ_PAD_SRC, which);
> -       mbus_info = rkisp1_isp_mbus_info_get(src_fmt->code);
> +       sink_mbus_info = rkisp1_isp_mbus_info_get(sink_fmt->code);
>
>         /* for YUV formats, userspace can change the mbus code on the src pad if it is supported */
> -       if (mbus_info->pixel_enc == V4L2_PIXEL_ENC_YUV &&
> +       if (sink_mbus_info->pixel_enc == V4L2_PIXEL_ENC_YUV &&
>             rkisp1_rsz_get_yuv_mbus_info(format->code))
>                 src_fmt->code = format->code;
>
> --
> 2.17.1
>

Gentle ping on this patch. I think it should also go to stable, as it
fixes a crash.

Best regards,
Tomasz

^ permalink raw reply	[flat|nested] 8+ messages in thread
* Re: [PATCH] media: rkisp1: rsz: crash fix when setting src format
@ 2021-02-10  6:09   ` Tomasz Figa
  0 siblings, 0 replies; 8+ messages in thread
From: Tomasz Figa @ 2021-02-10  6:09 UTC (permalink / raw)
  To: Dafna Hirschfeld, Mauro Carvalho Chehab
  Cc: Dafna Hirschfeld, Hans Verkuil, open list:ARM/Rockchip SoC...,
	Helen Koike, Laurent Pinchart, Sakari Ailus, Collabora Kernel ML,
	Ezequiel Garcia, Linux Media Mailing List

On Thu, Dec 10, 2020 at 1:15 AM Dafna Hirschfeld
<dafna.hirschfeld@collabora.com> wrote:
>
> When setting the source media bus code in the resizer,
> we first check that the current media bus code in the
> source is yuv encoded format. This is done by
> retrieving the data from the formats list of the isp
> entity. This cause a crash when the media bus code on the
> source is YUYV8_1_5X8 which is not supported by the isp
> entity. Instead we should test the sink format of the resizer
> which is guaranteed to be supported by the isp entity.
>
> Fixes: 251b6eebb6c49 ("media: staging: rkisp1: rsz: Add support to more YUV encoded mbus codes on src pad")
> Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
> ---
>  drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c | 9 +++++----
>  1 file changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
> index 813670ed9577..79deed8adcea 100644
> --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
> +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
> @@ -520,14 +520,15 @@ static void rkisp1_rsz_set_src_fmt(struct rkisp1_resizer *rsz,
>                                    struct v4l2_mbus_framefmt *format,
>                                    unsigned int which)
>  {
> -       const struct rkisp1_isp_mbus_info *mbus_info;
> -       struct v4l2_mbus_framefmt *src_fmt;
> +       const struct rkisp1_isp_mbus_info *sink_mbus_info;
> +       struct v4l2_mbus_framefmt *src_fmt, *sink_fmt;
>
> +       sink_fmt = rkisp1_rsz_get_pad_fmt(rsz, cfg, RKISP1_RSZ_PAD_SINK, which);
>         src_fmt = rkisp1_rsz_get_pad_fmt(rsz, cfg, RKISP1_RSZ_PAD_SRC, which);
> -       mbus_info = rkisp1_isp_mbus_info_get(src_fmt->code);
> +       sink_mbus_info = rkisp1_isp_mbus_info_get(sink_fmt->code);
>
>         /* for YUV formats, userspace can change the mbus code on the src pad if it is supported */
> -       if (mbus_info->pixel_enc == V4L2_PIXEL_ENC_YUV &&
> +       if (sink_mbus_info->pixel_enc == V4L2_PIXEL_ENC_YUV &&
>             rkisp1_rsz_get_yuv_mbus_info(format->code))
>                 src_fmt->code = format->code;
>
> --
> 2.17.1
>

Gentle ping on this patch. I think it should also go to stable, as it
fixes a crash.

Best regards,
Tomasz

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^ permalink raw reply	[flat|nested] 8+ messages in thread
end of thread, other threads:[~2021-02-10  6:22 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-12-09 16:15 [PATCH] media: rkisp1: rsz: crash fix when setting src format Dafna Hirschfeld
2020-12-09 16:15 ` Dafna Hirschfeld
2020-12-09 16:53 ` Helen Koike
2020-12-09 16:53   ` Helen Koike
2020-12-09 19:13 ` Sebastian Fricke
2020-12-09 19:13   ` Sebastian Fricke
2021-02-10  6:09 ` Tomasz Figa
2021-02-10  6:09   ` Tomasz Figa

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