Bug ID 694740: BIG-IP reboot during a TMM core results in an incomplete core dump

Last Modified: Nov 07, 2022

Bug Tracker

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

Known Affected Versions:
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, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3

Fixed In:
14.0.0, 13.1.0.4, 12.1.3.6

Opened: Nov 15, 2017
Severity: 2-Critical

Symptoms

If an HSB lockup occurs on i10600 and i10800 platforms, then HSB panics and generates a core file for post-analysis. HSB also triggers a nic_failsafe reboot. On this platform, the reboot occurs before the core file is fully written, resulting in a truncated core.

Impact

The reboot happens before the core dump completes, resulting in an incomplete core dump which is not useful for analyzing why the HSB lockup occurred. Traffic disrupted while tmm restarts.

Conditions

An HSB lockup occurs, triggering a core dump and a nic_failsafe reboot.

Workaround

No workaround; does not hinder device operation, but does prevent post-crash analysis.

Fix Information

Reboot is delayed until TMM core file is completed.

Behavior Change