Last Modified: Jul 12, 2023
BIG-IP LTM, PEM
Known Affected Versions:
13.1.0, 126.96.36.199, 188.8.131.52, 184.108.40.206, 220.127.116.11, 18.104.22.168
Opened: Jan 15, 2018 Severity: 2-Critical
Certain log messages for internal virtual server (IVS) at 'informational' log level, cause TMM to crash when they are logged. The messages are logged at the end of an HTTP transaction to or from an IVS.
TMM crashes and restarts, causing loss of connections.
Information level logging enabled: - sys db log.ivs.level informational or - log-config filter level set to info A transaction that passes HTTP to/from an internal virtual server.
Avoid setting log.ivs.level to 'informational' or higher level and/ log-config filter level to 'info' or higher. By default the level is 'error' which does not trigger the bug.
Informational messages for internal virtual server (IVS) are logged as expected and TMM does not crash.