Bug ID 452459: TMM crashes with PEM due to incorrect timer handling.

Last Modified: Sep 13, 2023

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

Known Affected Versions:
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

Fixed In:
11.6.0

Opened: Mar 14, 2014

Severity: 3-Major

Symptoms

Intermittent TMM crash when using PEM. The crash backtrace indicates the TMM was caught in an infinite loop servicing timer completion events.

Impact

Traffic disrupted while tmm restarts.

Conditions

Crash can (rarely) be triggered by a client disconnecting and immediately reconnecting a TCP connection to a PEM virtual.

Workaround

This issue has no workaround.

Fix Information

A bug in timer cleanup handling during TCP disconnect processing by the PEM module was fixed.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips