Bug ID 554609: Kernel panics during boot when RAM spans multiple NUMA nodes.

Last Modified: May 14, 2019

Bug Tracker

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

Known Affected Versions:
11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 12.0.0, 12.0.0 HF1, 12.0.0 HF2

Fixed In:
12.1.0, 12.0.0 HF3, 11.6.1

Opened: Oct 27, 2015
Severity: 2-Critical
Related AskF5 Article:


BIG-IP Virtual Edition (VE) crashes in the kernel during early boot.


Kernel panic during boot.


This occurs when the following conditions are met: * VE is running on Hyper-V. * VE RAM is configured in a such a way that it spans multiple NUMA nodes.


No workaround.

Fix Information

The kernel now properly aligns memory on multiple NUMA nodes, so there is no kernel panic during boot.

Behavior Change