[2471239436] Upstream Reporter: Raman Gupta
Upstream issue status: Open
Upstream description:

1. 1. 1. Describe the bug

I'm experimenting with Fedora CoreOS in a VM. I'm finding my VM just randomly reboots, even while I'm in the middle of working on it.

Inspecting the logs via `journalctl` I see this:

```
Aug 16 09:02:46 myhost zincati[4777]: [ERROR zincati::update_agent] failed to check for interactive sessions: failed to deserialize output of `loginctl`
Aug 16 09:02:46 myhost zincati[4777]: [WARN zincati::update_agent] assuming no active sessions and proceeding anyway
Aug 16 09:02:46 myhost zincati[4777]: [INFO zincati::update_agent::actor] staged deployment '40.20240728.3.0' available, proceeding to finalize it
Aug 16 09:02:46 myhost rpm-ostree[1716434]: Loaded sysroot
Aug 16 09:02:46 myhost rpm-ostree[1716434]: Locked sysroot
Aug 16 09:02:46 myhost rpm-ostree[1716434]: Initiated txn FinalizeDeployment for client(dbus:1.5829 unit:zincati.service uid:981): /org/projectatomic/rpmostree1/fedora_coreos
Aug 16 09:02:46 myhost rpm-ostree[1716434]: Process [pid: 1718634 uid: 981 unit: zincati.service] connected to transaction progress
Aug 16 09:02:46 myhost rpm-ostree[1716434]: Finalized deployment; rebooting into 2098f40910d5d7c0171a8f7173d81cb070f4047e1e81d9d5228d5d62e24fe722
Aug 16 09:02:46 myhost rpm-ostree[1716434]: Txn FinalizeDeployment on /org/projectatomic/rpmostree1/fedora_coreos successful
Aug 16 09:02:46 myhost rpm-ostree[1716434]: Unlocked sysroot
Aug 16 09:02:46 myhost rpm-ostree[1716434]: Initiating reboot requested from transaction
Aug 16 09:02:46 myhost systemd-logind[1165]: The system will reboot now!
Aug 16 09:02:46 myhost systemd-logind[1165]: System is rebooting.
Aug 16 09:02:46 myhost rpm-ostree[1716434]: Process [pid: 1718634 uid: 981 unit: zincati.service] disconnected from transaction progress
Aug 16 09:02:46 myhost rpm-ostree[1716434]: In idle state; will auto-exit in 60 seconds
Aug 16 09:02:46 myhost zincati[4777]: [INFO zincati::update_agent::actor] update finalized: 40.20240728.3.0
Aug 16 09:02:46 myhost zincati[4777]: [INFO zincati::update_agent::actor] update applied, waiting for reboot: 40.20240728.3.0
```

From these logs it seems like zincati is checking if there are any active sessions, failing to do so ("failed to check for interactive sessions: failed to deserialize output of `loginctl`"), and then proceeding to assume there are none and rebooting anyway ("assuming no active sessions and proceeding anyway").

This is annoying to say the least.

1. 1. 1. Reproduction steps

1. Install Fedora CoreOS
2. Wait

1. 1. 1. Expected behavior

System should not reboot automatically while it is being used!

1. 1. 1. Actual behavior

System rebooted automatically while being used.

1. 1. 1. System details

QEMU

```
NAME="Fedora Linux"
VERSION="40.20240728.3.0 (CoreOS)"
ID=fedora
VERSION_ID=40
VERSION_CODENAME=""
PLATFORM_ID="platform:f40"
PRETTY_NAME="Fedora CoreOS 40.20240728.3.0"
ANSI_COLOR="0;38;2;60;110;180"
LOGO=fedora-logo-icon
CPE_NAME="cpe:/o:fedoraproject:fedora:40"
HOME_URL="https://getfedora.org/coreos/"
DOCUMENTATION_URL="https://docs.fedoraproject.org/en-US/fedora-coreos/"
SUPPORT_URL="https://github.com/coreos/fedora-coreos-tracker/"
BUG_REPORT_URL="https://github.com/coreos/fedora-coreos-tracker/"
REDHAT_BUGZILLA_PRODUCT="Fedora"
REDHAT_BUGZILLA_PRODUCT_VERSION=40
REDHAT_SUPPORT_PRODUCT="Fedora"
REDHAT_SUPPORT_PRODUCT_VERSION=40
SUPPORT_END=2025-05-13
VARIANT="CoreOS"
VARIANT_ID=coreos
OSTREE_VERSION='40.20240728.3.0'
```

1. 1. 1. Butane or Ignition config

```yaml
variant: fcos
version: 1.4.0
passwd:
users:

• name: core
  ssh_authorized_keys:
• ssh-ed25519 xxx
  ```

1. 1. 1. Additional information

The output of `loginctl` is:

```
$ loginctl
SESSION UID USER SEAT TTY STATE IDLE SINCE
2 1000 core - - active no -

1 sessions listed.
```