Christopher, I have tested and confirm that cherry pick of commit 8a08403bcb39f5d0e733bcf59a8a74f16b538f6e from the upstream kernel to Ubuntu-4.8.0-37.39 tag fixes the issue.
Christopher, I have tested and confirm that cherry pick of commit 8a08403bcb39f5d 0e733bcf59a8a74 f16b538f6e from the upstream kernel to Ubuntu-4.8.0-37.39 tag fixes the issue.