So I tried to repro this on the latest upstream v4.1-fc5 kernel from http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.1-rc5-unstable/.
It looks like the issue's been fixed there.
So I tried to repro this on the latest upstream v4.1-fc5 kernel from http:// kernel. ubuntu. com/~kernel- ppa/mainline/ v4.1-rc5- unstable/.
It looks like the issue's been fixed there.