Comment 2 for bug 1503902

After some Internet research it seems this issue is already fixed in mainline kernel:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9cf94eab8b309e8bcc78b41dd1561c75b537dd0b

I will try to cherry-pick to latest ubuntu kernel and report back the results.