Bug ID 572375: Race condition in the terminate handler of the icrd_child process causes the process to become unresponsive, and generates a core file

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.6.0, 11.6.1, 11.6.2, 11.6.3,,,,, 11.6.4, 11.6.5,,,

Opened: Feb 08, 2016

Severity: 3-Major

Related Article: K36870345


* In the /var/log/icrd log file, you may observe an error message similar to the following example: notice icrd: 5823,14414, RestServer, INFO,Connection idle too long fd:11. * The BIG-IP system may generate an icrd_child core file in the /var/core directory.


icrd_child experiences an intermittent segfault error and has to be restarted.


You use the iControl REST application programming interface (API) to obtain data from or modify the configuration of your BIG-IP system.


No workaround.

Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips