Bug ID 689437: icrd_child cores due to infinite recursion caused by incorrect group name handling

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.4.1, 11.5.0, 11.5.1, 11.5.2, 11.5.3, 11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2, 12.1.0, 12.1.1, 12.1.2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1

Fixed In:
14.0.0, 13.1.1.2, 12.1.4, 11.6.4, 11.5.9

Opened: Oct 19, 2017

Severity: 2-Critical

Related Article: K49554067

Symptoms

Every time the virtual server stats are requested via REST, icrd_child consumes high CPU, grows rapidly toward the 4 GB max process size (32-bit process), and might eventually core.

Impact

icrd_child consumes high CPU, grows rapidly, and might eventually core.

Conditions

Virtual server stats are requested via iControl REST with a special string that includes the dotted group names.

Workaround

Clear the virtual server stats via reset-stats and icrd_child no longer cores.

Fix Information

icrd_child parsing logic update is needed to not enter recursion.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips