Comment 3 for bug 1999731

It may be worth using stress-ng from https://launchpad.net/~colin-king/+archive/ubuntu/stress-ng or building it from source using:

git clone https://github.com/ColinIanKing/stress-ng
cd stress-ng
git checkout V0.15.00
make clean
make

and then running:

./stress-ng --lockofd 0 -t 300 --vmstat 1

..and see if that causes the issue.

Then checkout V0.14.06, make clean; make and see if this causes the issue.