Bug ID 967769: During reset of high-speed interfaces, TMMs may mistakenly continue hardware watchdog checks

Last Modified: Sep 27, 2021

Bug Tracker

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

Known Affected Versions:
15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 16.1.0

Opened: Nov 26, 2020
Severity: 2-Critical

Symptoms

Tmm crashes and restarts. The following panic message is found in /var/log/tmm: notice panic: ../dev/hsb/if_hsb.c:6129: Assertion "HSB lockup, see ltm and tmm log files" failed.

Impact

Traffic disrupted while tmm restarts.

Conditions

-- Running on a platform that incorporates 'HiGig MAC' network interfaces. -- Some error or glitch is detected on the high-speed bus (HSB). -- Software commands a reset of the HSB and interface hardware.

Workaround

None

Fix Information

None

Behavior Change