linux-kernel - Re: [PATCH v3 00/14] staging: media: zoran: fusion in one module

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 3 Nov 2021 16:21:02 +0100
From:   Hans Verkuil <hverkuil@...all.nl>
To:     Corentin Labbe <clabbe@...libre.com>, mchehab@...nel.org,
        gregkh@...uxfoundation.org
Cc:     linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        linux-staging@...ts.linux.dev, mjpeg-users@...ts.sourceforge.net
Subject: Re: [PATCH v3 00/14] staging: media: zoran: fusion in one module

Hi Corentin,

On 26/10/2021 21:34, Corentin Labbe wrote:
> Hello
> 
> The main change of this serie is to fusion all zoran related modules in
> one.
> This fixes the load order problem when everything is built-in.

I've been testing this series, and while the module load/unload is now working,
I'm running into a lot of other v4l2 compliance issues.

I've fixed various issues in some follow-up patches available in my tree:

https://git.linuxtv.org/hverkuil/media_tree.git/log/?h=zoran

At least some of the worst offenders are now resolved. Note that the patch
dropping read/write support relies on this patch:

https://patchwork.linuxtv.org/project/linux-media/patch/4f89b139-13b7-eee6-9662-996626b778b0@xs4all.nl/

But there is one really major bug that makes me hesitant to merge this:

This works:

v4l2-ctl -v pixelformat=MJPG,width=768,height=576
v4l2-ctl --stream-mmap

This fails:

v4l2-ctl -v pixelformat=MJPG,width=768,height=288
v4l2-ctl --stream-mmap

It's an immediate lock up with nothing to indicate what is wrong.
As soon as the height is 288 or less, this happens.

Both with my DC30 and DC30D.

Do you see the same? Any idea what is going on? I would feel much happier
if this is fixed.

Note that the same problem is present without this patch series, so it's
been there for some time.

Regards,

	Hans

> 
> Regards
> 
> Changes since v2:
> - added the 4 latest patchs
> - removed DEBUGFS kconfig option
> - fixed Dan Carpenter's reported codec issues
> - fixed kernel test robot's reported issues on vb2_dma_contig_set_max_seg_size()
> 
> Changes since v1:
> - add missing debugfs cleaning
> - clean some remaining module_get/put functions which made impossible to
>   remove the zoran module
> - added the two latest patchs
> 
> Corentin Labbe (14):
>   staging: media: zoran: move module parameter checks to zoran_probe
>   staging: media: zoran: use module_pci_driver
>   staging: media: zoran: rename debug module parameter
>   staging: media: zoran: add debugfs
>   staging: media: zoran: videocode: remove procfs
>   staging: media: zoran: fusion all modules
>   staging: media: zoran: remove vidmem
>   staging: media: zoran: move videodev alloc
>   staging: media: zoran: move config select on primary kconfig
>   staging: media: zoran: introduce zoran_i2c_init
>   staging: media: zoran: fix usage of vb2_dma_contig_set_max_seg_size
>   staging: media: zoran: clean unused code
>   staging: media: zoran: fix counting buffer in reserve
>   staging: media: zoran: DC30 encoder is not adv7175
> 
>  drivers/staging/media/zoran/Kconfig        |  38 +-
>  drivers/staging/media/zoran/Makefile       |   8 +-
>  drivers/staging/media/zoran/videocodec.c   |  68 +---
>  drivers/staging/media/zoran/videocodec.h   |   4 +-
>  drivers/staging/media/zoran/zoran.h        |  18 +-
>  drivers/staging/media/zoran/zoran_card.c   | 400 +++++++++++++--------
>  drivers/staging/media/zoran/zoran_device.h |   2 -
>  drivers/staging/media/zoran/zoran_driver.c |   8 +-
>  drivers/staging/media/zoran/zr36016.c      |  25 +-
>  drivers/staging/media/zoran/zr36016.h      |   2 +
>  drivers/staging/media/zoran/zr36050.c      |  24 +-
>  drivers/staging/media/zoran/zr36050.h      |   2 +
>  drivers/staging/media/zoran/zr36060.c      |  23 +-
>  drivers/staging/media/zoran/zr36060.h      |   2 +
>  14 files changed, 317 insertions(+), 307 deletions(-)
>