Last Modified: Sep 13, 2023
Affected Product(s):
BIG-IP All
Known Affected Versions:
11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.1 HF10, 11.5.1 HF11, 11.5.2 HF1, 11.5.3 HF1, 11.5.3 HF2, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4
Fixed In:
11.6.1 HF2
Opened: Oct 21, 2016 Severity: 2-Critical
Problems with bigd, snmpd and other daemons. System becomes inaccessible via ssh and GUI. Hung tasks recorded in kern logs, typically snmpd, bigd, chmand, big3d hung. Caused by Centos kernel bug in netlink code where mutex is left locked on error path.
SNMP traffic fails with hung tasks. Reboot required.
Seen when a system is handling heavy SNMP traffic and memory is low.
Apparently reducing SNMP load helps avoid/postpone the problem.
None