Re: [PATCH 1/1] ipu3-imgu: Fix NULL pointer dereference in active selection access

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Hi Maximilian,

On Wed, Sep 07, 2022 at 03:44:44PM +0200, Maximilian Luz wrote:
> Hi,
> 
> On Thu, 25 Aug 2022 22:03:51 +0300, Sakari Ailus  wrote:
> > What the IMGU driver did was that it first acquired the pointers to active
> > and try V4L2 subdev state, and only then figured out which one to use.
> > 
> > The problem with that approach and a later patch (see Fixes: tag) is that
> > as sd_state argument to v4l2_subdev_get_try_crop() et al is NULL, there is
> > now an attempt to dereference that.
> > 
> > Fix this.
> 
> Thank you for this fix, this however only addresses
> imgu_subdev_get_selection(), but the issue is also present in
> imgu_subdev_set_selection(). I assume that a similar fix is needed for that.
> I've added a diff for that below. Feel free to squash that into your patch or
> let me know if I should submit this separately.

I've already sent a PR that includes it. Could you send this one as a
patch, please?

-- 
Sakari Ailus



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