Bug ID 488581: The TMM process may restart and produce a core file when using the SSL::disable clientside iRule command within a HTTP_REQUEST event

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.5.1 HF1, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.1 HF10, 11.5.1 HF11, 11.5.2 HF1, 11.5.3 HF1, 11.5.3 HF2, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 12.0.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.1.0, 12.0.0 HF1, 11.6.0 HF6

Opened: Nov 04, 2014

Severity: 3-Major

Related Article: K17539

Symptoms

The Traffic Management Microkernel (TMM) process may restart and produce a core file when using the SSL::disable client-side iRule command within an HTTP_REQUEST event. Symptoms As a result of this issue, you may encounter one or more of the following symptoms: The BIG-IP system fails over to another host in the device group. The BIG-IP system generates a TMM core file to the /shared/core directory. The BIG-IP system temporarily fails to process traffic.

Impact

Traffic disrupted while tmm restarts.

Conditions

This issue occurs when the following conditions are met: You have configured a virtual server that uses an iRule. The iRule contains the SSL::disable client-side iRule command within an HTTP_REQUEST event. The virtual server processes traffic that triggers the HTTP_REQUEST event while processing encrypted traffic.

Workaround

Do not put 'SSL::disable clientside' inside HTTP_REQUEST.

Fix Information

The Traffic Management Microkernel (TMM) process no longer restarts and produces a core file when using the SSL::disable client-side iRule command within an HTTP_REQUEST event.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips