Bug ID 530138: Crit tmm error messages due to race condition that occurs during RebootHost on 10000, 10050, 10055, 10200F, 10350N, 12050, and 12250 platforms.

Last Modified: Jun 10, 2021

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, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3,,,,,,,, 12.1.4,, 12.1.5,,,, 12.1.6, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,,,,, 13.1.4,

Opened: Jun 26, 2015
Severity: 3-Major


When the IOMMU is enabled, the system may report crit tmm error messages due to a race condition that might occurs during start-up. Error messages appear in /var/log/ltm, similar to the following: crit tmm[14967]: 01010025:2: Device error: hsb interface 0 coalesce timed out. crit tmm[14967]: 01010025:2: Device error: hsb interface pde 0 access failed. crit tmm[14967]: 01230017:2: Unable to attach to PCI device 03:00.01 for Interface 0.1. ... crit tmm[14967]: 01010260:2: Hardware Error(Co-Processor): n3-crypto1 request queue stuck.


System remains INOPERATIVE and reports crit tmm error messages. Note: Although IOMMU is disabled by default, you can enable it using the BIOS utility, and newer platforms might enable it by default.


This may occur on startup as a result of a race condition between chmand and tmm with IOMMU enabled.


To recover from the INOPERATIVE state, disable IOMMU with the following command and restart the BIG-IP system: tmsh modify sys db kernel.iommu valued isable

Fix Information


Behavior Change