Bug ID 508053: TMM crashes with Assertion 'flow not in use' log message

Last Modified: Apr 10, 2019

Bug Tracker

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

Known Affected Versions:
11.6.0, 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, 11.6.1, 11.6.1 HF1, 11.6.1 HF2, 11.6.2, 11.6.2 HF1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4

Fixed In:
12.0.0

Opened: Feb 19, 2015
Severity: 2-Critical
Related AskF5 Article:
K52630023

Symptoms

TMM crashes with an assertion 'flow not in use' log message. This issue is more prominent when traffic selector narrowing occurs during IPsec/IKE negotiations.

Impact

TMM does not removes a flow properly. TMM crashes. The tmm log contains a message similar to the following: notice panic: ../base/flow_table.c:598: Assertion 'flow not in use' failed. Traffic disrupted while tmm restarts.

Conditions

During traffic selector narrowing, the narrowed selector policies are added and deleted multiple times for the same parent ipsec policy. During this process, improper release of flows by TMM causes this issue.

Workaround

There is no workaround at this time.

Fix Information

TMM now releases the flow properly and TMM does not crash.

Behavior Change