Hi Salvatore, Thank you and Andrew for figuring this out and providing a solution. The bugfix is now in the linux-4.9.y branch:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/?h=linux-4.9.y&id=5e8b028abaf85502c53fb3af795f3c61d7cbcdc8 Regards, Axel