Bug ID 2138129: Fluent-bit ARM64 image hits unsupported page size issues on ARM64 AKS cluster

Last Modified: Jul 15, 2026

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

Known Affected Versions:
2.1.0, 2.1.1

Opened: Oct 22, 2025

Severity: 3-Major

Symptoms

When configuring a Linux kernel with the page size for 64K page size: CONFIG_ARM64_64K_PAGES=y, Fluentbit fails to start with an error "Unsupported system page size".

Impact

Fluentbit fails to start with an error "Unsupported system page size".

Conditions

When configuring a Linux kernel with the page size for 64K page size: CONFIG_ARM64_64K_PAGES=y

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips