Bug ID 1550737: Error "Access encountered error: ERR_ARG" was logged repeatedly after an upgrade

Last Modified: Jun 11, 2024

Affected Product(s):
BIG-IP APM(all modules)

Opened: Feb 23, 2024

Severity: 3-Major

Symptoms

Observed that this message appeared often in /var/log/apm. (approximately 150 times per second) err tmm3[9072]: 01490514:3: (null):Common:00000000: Access encountered error: ERR_ARG. File: ../modules/hudfilter/access/access_session.c, Function: access_session_ip_session_mapping_create_key, Line: 6701 err tmm3[9072]: 01490514:3: (null):Common:00000000: Access encountered error: ERR_ARG. File: ../modules/hudfilter/access/access_session.c, Function: access_session_lookup_session_by_ip, Line: 6900

Impact

Logs may display the appearance of many issues, even if there are no behavioral anomalies. The logs look alarming, but can be ignored if there is not an actual behavioral issue that needs to be analyzed.

Conditions

An internal software API call triggers the unexpected result.

Workaround

Disable db variable \"Tmm.Access.ExtendedLog\" # setdb Tmm.Access.ExtendedLog disable # getdb Tmm.Access.ExtendedLog disable When DB variable is set to disable, these logs are filtered.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips