Re: [PATCH] drm: Check for lessee in DROP_MASTER ioctl

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Daniel Vetter <daniel@xxxxxxxx> writes:

> On Thu, Jan 18, 2018 at 05:51:59PM -0800, Keith Packard wrote:
>> Don't let a lessee control what the current DRM master is set to;
>> that's the job of the "real" master. Otherwise, the lessee would
>> disable all access to master operations for the owner and all lessees
>> under it.
>> 
>> This matches the same check made in the SET_MASTER ioctl.
>> 
>> Signed-off-by: Keith Packard <keithp@xxxxxxxxxx>
>
> Similar check for setmaster already exists, so looks all good. Do we have
> an igt for all this? Iirc there was one floating around, but no idea
> what's the status. Might also be good to resubmit them so i915 CI can run
> the tests (now that the code has landed).

I've got IGT tests for leasing which have been posted to dri-devel but I
don't think they've been reviewed. Looks like they could use some more
test cases; I didn't catch this one until I was playing with my 'xlease'
hack, which runs the X server on a leased FD.

> On the patch itself, minus lack of testcases:
>
> Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>

Thanks!

-- 
-keith

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