Bug ID 1019285: Systemd hangs and is unresponsive

Last Modified: May 29, 2024

Affected Product(s):
BIG-IP TMOS(all modules)

Known Affected Versions:
14.1.0,,,,,, 14.1.2,,,,,,,,, 14.1.3,, 14.1.4,,,,,,, 14.1.5,,,,,, 15.1.0,,,,,, 15.1.1, 15.1.2,, 15.1.3,, 15.1.4,, 15.1.5,, 15.1.6,, 15.1.7, 15.1.8,,, 15.1.9,, 15.1.10,,,, 16.0.0,, 16.0.1,,

Opened: May 18, 2021

Severity: 3-Major


When memory is exhausted on the system and systemd tries to fork to start or stop a service, systemd fails and enters "freeze" mode.


Systemd does not provide service anymore.


Following log messages can be seen in the daemon.log log file: err systemd[1]: Failed to fork: Cannot allocate memory crit systemd[1]: Assertion 'pid >= 1' failed at src/core/unit.c:1997, function unit_watch_pid(). Aborting. emerg systemd[1]: Caught <ABRT>, cannot fork for core dump: Cannot allocate memory emerg systemd[1]: Freezing execution.


Reboot the system to restore the systemd services.

Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips