Comment 3 for bug 1533043

For what it's worth, Dockerized containers running common open-source applications (Cassandra, Mongo, Flynn) have stumbled hard on this - and of course, it's not just on Ubuntu, but all Linux kernels with 296291cdd: https://bugzilla.kernel.org/show_bug.cgi?id=109971 -

Akihiro has been a champion in tracking down the cause, reproduction of the problem, a patch, and pushing for a fix in all the right places. Give this guy a high five or a beer if you know him in person, he's helping a lot of people out with his efforts.