Bug ID 1965697: TMM may crash on SR-IOV deployments with Intel 710 series cards

Last Modified: Jul 15, 2026

Affected Product(s):
BIG_IP_NEXT(BNK) BNK(all modules)

Fixed In:
2.1.0

Opened: Jun 04, 2025

Severity: 3-Major

Symptoms

DPDK driver starts the service thread, and the thread may use wrong segment in TMM memory in some rare conditions. This will lead to double memory free and TMM will restart with the a core file.

Impact

Traffic disruption during f5-fsm-tmm pod restart.

Conditions

- SR-IOV deployment with Intel X710/XXV710/XL710 cards - DPDK driver is used for this card

Workaround

None

Fix Information

TMM correctly handles the memory allocations for DPDK service thread.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips