https://bugs.freedesktop.org/show_bug.cgi?id=96343
--- Comment #2 from Andy Furniss adf.lists@gmail.com --- (In reply to Nicolai Hähnle from comment #1)
Thank you for testing and reporting :)
Please try https://patchwork.freedesktop.org/patch/91150/ - it fixes a related resource leak, hopefully there's nothing else.
That fixes it, thanks.