Last Modified: Feb 07, 2024
Affected Product(s):
BIG-IP DNS, LTM
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, 15.1.4.1, 15.1.5, 15.1.5.1, 15.1.6, 16.1.0, 16.1.1, 16.1.2, 16.1.2.1
Fixed In:
17.0.0, 16.1.2.2, 15.1.6.1
Opened: Feb 04, 2020 Severity: 2-Critical
When running the debug version of TMM, if a particular DNS lookup takes more than 30 seconds, TMM may assert with a message in the /var/log/tmm file similar to the following example: notice panic: ../modules/hudfilter/3dns/cache_resolver.c:2343: Assertion "standalone refcnt must be one" failed.
TMM crashes and, in redundant configurations, the unit fails over.
-- Using the debug TMM -- Using the RESOLV::lookup iRule command -- The DNS server targeted by the aforementioned command is running slowly or malfunctioning
Do not use the debug TMM.
The debug assert was removed and replaced by a debug log.