and very quick to reproduce on 5.4 kernel
ubuntu@kreiken:~$ uname -a Linux kreiken 5.4.0-18-generic #22-Ubuntu SMP Sat Mar 7 18:09:45 UTC 2020 aarch64 aarch64 aarch64 GNU/Linux ubuntu@kreiken:~$ sudo stress-ng --aggressive --verify --timeout 330 --metrics-brief --tz --times --af-alg 0 stress-ng: info: [4144] dispatching hogs: 128 af-alg stress-ng: fail: [4161] stress-ng-af-alg: bind failed, errno=19 (No such device)
and very quick to reproduce on 5.4 kernel
ubuntu@kreiken:~$ uname -a
Linux kreiken 5.4.0-18-generic #22-Ubuntu SMP Sat Mar 7 18:09:45 UTC 2020 aarch64 aarch64 aarch64 GNU/Linux
ubuntu@kreiken:~$ sudo stress-ng --aggressive --verify --timeout 330 --metrics-brief --tz --times --af-alg 0
stress-ng: info: [4144] dispatching hogs: 128 af-alg
stress-ng: fail: [4161] stress-ng-af-alg: bind failed, errno=19 (No such device)