Bug ID 588959: TMM may crash or behave abnormally on a Standby BIG-IP unit

Last Modified: Apr 10, 2019

Bug Tracker

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

Known Affected Versions:
12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2

Fixed In:
13.0.0, 12.1.2

Opened: Apr 21, 2016
Severity: 2-Critical
Related AskF5 Article:
K34453301

Symptoms

TMM may crash or behave abnormally on a Standby BIG-IP unit. Memory utilization before the crash can appear to be unusually high.

Impact

The unit is not operational until TMM has finished writing the core file to disk and restarting. If the unit was Active for a different traffic-group, traffic for that traffic-group will be disrupted while tmm restarts.

Conditions

This is a rare issue, currently known to occur only in WOM or Multipath TCP (MPTCP) virtual servers configured with mirroring. Virtual servers that make use of the standard TCP profile are not affected.

Workaround

None.

Fix Information

TMM no longer crashes in the rare case of WOM or Multipath TCP (MPTCP) virtual servers configured with mirroring.

Behavior Change