Comment 14 for bug 1495442

We are also running into this bug on a couple of machines as well, which is causing a DOS on our machine since it blocks all IO and requires a reboot.
We are running 3.19.0-28-generic also had the tx hang bug so we can't use the 3.16 kernel.

I am not sure what triggers it, since it happens randomly and unpredictably. These are production machines so I can't do much debugging on it but want to confirm something seems to break.