Bug ID 562292: Nesting periodic after with parking command could crash tmm

Last Modified: Oct 17, 2023

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

Known Affected Versions:
11.0.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.5.1 HF1, 11.6.1 HF1, 11.5.1 HF2, 11.6.1 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, 11.6.2 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, 11.1.0, 11.2.0, 11.2.1, 11.3.0, 11.4.0, 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, 11.5.9, 11.5.10, 11.6.0

Fixed In:
12.1.0, 11.6.1

Opened: Dec 09, 2015

Severity: 3-Major

Related Article: K49427459

Symptoms

If an iRule contains a periodic after command, and within this there is another periodic after command whose contents park, it can lead to tmm crashes.

Impact

Traffic disrupted while tmm restarts.

Conditions

A periodic after command is used, and within this there is another periodic after command whose contents park.

Workaround

Do not nest after commands with parking command.

Fix Information

TMM no longer crashes with iRules that contain a periodic after command, which itself contains a periodic after command whose contents park. These iRules now complete as expected.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips