Bug ID 472202: Potential false positive report of DMA RX lockup failure

Last Modified: Nov 07, 2022

Bug Tracker

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

Known Affected Versions:
11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 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, 11.5.10, 11.5.2

Fixed In:
11.6.0, 11.5.3, 11.5.2 HF1

Opened: Jul 17, 2014
Severity: 2-Critical
Related Article:


Due to mixed traffic in the same ring, heartbeat message might not be received in time and therefore system report DMA RX lockup after a period of time.


TMM restart and report HSB DMA RX lockup


Mixed traffic stressing into DMA ring 0 and have impacts to heartbeat healthy messages.



Fix Information

The false positive report of RX HSB DMA lockup had been eliminated as long as the ring is moving.

Behavior Change