Comment 22 for bug 1926081

Andrew - It was suggested that there are a couple more patches relevant to this issue:

mm: fix oom_kill event handling
mem_cgroup: make sure moving_account, move_lock_task and stat_cpu in the same cacheline
mm: memcg: make sure memory.events is uptodate when waking pollers
mm: memcontrol: fix NR_WRITEBACK leak in memcg and system stats

Please test the kernel at https://kernel.ubuntu.com/~rtg/LP%231926081/4.15.0-144.148~LP1926081.2/amd64/ to make sure it still solves your issue.