Bug ID 1209409: Address lists with thousands of addresses can cause MCPD to become unresponsive and use 100% CPU

Last Modified: Jan 20, 2023

Bug Tracker

Affected Product:  See more info
BIG-IP AFM(all modules)

Known Affected Versions:
14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 14.1.2.7, 14.1.2.8, 14.1.3, 14.1.3.1, 14.1.4, 14.1.4.1, 14.1.4.2, 14.1.4.3, 14.1.4.4, 14.1.4.5, 14.1.4.6, 14.1.5, 14.1.5.1, 14.1.5.2, 14.1.5.3, 15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 15.1.5, 15.1.5.1, 15.1.6, 15.1.6.1, 15.1.7, 15.1.8, 15.1.8.1, 16.1.0, 16.1.1, 16.1.2, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3, 17.0.0, 17.0.0.1, 17.0.0.2

Opened: Dec 13, 2022
Severity: 3-Major

Symptoms

If there are thousands of addresses in an address list, validation of the addresses can take extended time. While MCPD is validating the addresses it will use nearly 100% of the CPU. Also, during this time, other daemon might timeout their connection with MCPD and/or restart.

Impact

- Longer load /sys configuration time including on upgrade. - Longer configuration sync time, where full configuration sync is more prone to cause this issue. - Modifications using the webUI consume longer time and might timeout. Depending on how long MCPD spends validating the addresses, other daemons, including TMM, might timeout their connection to MCPD and/or restart.

Conditions

- Thousands of addresses in an address list.

Workaround

None

Fix Information

None

Behavior Change