I don't see runc calling its poststop hooks when it is stopping a container.

sh-4.4# podman stop alice_gold2
448c048639989b307e7ceb089f7396d9807e170386d340e00fd1d12f30ced165

This calls runc kill 448c048639989b307e7ceb089f7396d9807e170386d340e00fd1d12f30ced165 TERMINATE

sh-4.4# journalctl -b | grep oci-register | grep 448
May 04 15:41:47 localhost.localdomain oci-register-machine[24860]: 2018/05/04 15:41:47 Register machine: prestart 448c048639989b307e7ceb089f7396d9807e170386d340e00fd1d12f30ced165 24854

Journal only shows that oci-register-machine was called in prestart

runc list | grep ^448
448c048639989b307e7ceb089f7396d9807e170386d340e00fd1d12f30ced165 0 stopped /var/lib/containers/storage/overlay-containers/448c048639989b307e7ceb089f7396d9807e170386d340e00fd1d12f30ced165/userdata 2018-05-04T19:41:47.127501532Z root

runc shows that the container was stopped

Here is the poststop section of the spec file.

"poststop": [
{
"path": "/usr/libexec/oci/hooks.d/oci-register-machine",
"args": [
"/usr/libexec/oci/hooks.d/oci-register-machine"
],
"env": [
"stage=poststop"
]
},
{
"path": "/usr/libexec/oci/hooks.d/oci-systemd-hook",
"args": [
"/usr/libexec/oci/hooks.d/oci-systemd-hook"
],
"env": [
"stage=poststop"
]
}
]

Any ideas?

Reproduce the container stop with podman stop and inspect journalctl output for the container ID, then compare it with runc list and the poststop section of the OCI spec. Done means determining whether the listed poststop hooks run after runc kill TERMINATE and documenting or fixing the missing hook invocation.