[systemd-bugs] [Bug 66923] New: generator: usage of systemctl is causing deadlock which prevents starting systemd

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=66923

          Priority: medium
            Bug ID: 66923
          Assignee: systemd-bugs at lists.freedesktop.org
           Summary: generator: usage of systemctl is causing deadlock
                    which prevents starting systemd
        QA Contact: systemd-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: umut at tezduyar.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: general
           Product: systemd

If systemctl is used in a generator, it causes a deadlock which eventually
resolves when the bus connection request times out. But meanwhile, it prevents
systemd from starting up.

A generator like following will cause deadlock.

#!/bin/sh -e

. /etc/conf.d/iptables

if [ $IPTABLES_ENABLED = yes ]; then
    systemctl --runtime --no-reload enable ip-filter.service
else
    systemctl --runtime --no-reload disable ip-filter.service
fi

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