[PATCH] drm: Check for lessee in DROP_MASTER ioctl

[Daniel Vetter]

On Tue, Jan 30, 2018 at 11:55:01AM -0800, Keith Packard wrote:
> Daniel Vetter <daniel at ffwll.ch> 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 at keithp.com>
> >
> > 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.

Can you pls resubmit (preferrably with the new nasty tests added) to
igt-dev at lists.freedesktop.org (we have a new m-l for igt stuff)?

> > On the patch itself, minus lack of testcases:
> >
> > Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> 
> Thanks!

Realized I should better apply this, and done :-)
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch