Bug ID 597955: APM can generates false error log messages

Last Modified: Feb 14, 2024

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

Known Affected Versions:
11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2, 12.1.0, 12.1.1, 12.1.2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4, 12.1.4.1, 12.1.5, 12.1.5.1, 12.1.5.2, 12.1.5.3, 12.1.6, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4, 13.1.1.5, 13.1.3, 13.1.3.1, 13.1.3.2, 13.1.3.3, 13.1.3.4, 13.1.3.5, 13.1.3.6, 13.1.4, 13.1.4.1, 13.1.5, 13.1.5.1, 14.0.0, 14.0.0.1, 14.0.0.2, 14.0.0.3, 14.0.0.4, 14.0.0.5, 14.0.1, 14.0.1.1, 14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 14.1.2.7, 14.1.2.8, 14.1.3, 14.1.3.1, 14.1.4, 14.1.4.1, 14.1.4.2, 14.1.4.3, 14.1.4.4, 14.1.4.5, 14.1.4.6, 14.1.5, 14.1.5.1, 14.1.5.2, 14.1.5.3, 14.1.5.4, 14.1.5.6, 15.0.0, 15.0.1, 15.0.1.1, 15.0.1.2, 15.0.1.3, 15.0.1.4

Fixed In:
15.1.0

Opened: Jun 08, 2016

Severity: 3-Major

Symptoms

Internally detected issues can trigger a series of error log messages. The logs look alarming, but can be considered diagnostic in the case there is an actual behavioral issue that needs to be analyzed. The system reports the following messages in /var/log/apm: -- err tmm1[11197]: 01490514:3: 00000000: Access encountered error: ERR_VAL. File: ../modules/hudfilter/access/access.c, Function: access_slowpath_security_check, Line: 6648 -- err tmm8[18022]: 01490514:3: 00000000: Access encountered error: ERR_ARG. File: ../modules/hudfilter/access/access.c, Function: access_sanitize_uri, Line: 16406 -- err tmm8[18022]: 01490514:3: 00000000: Access encountered error: ERR_ARG. File: ../modules/hudfilter/access/access.c, Function: access_check_uri_type, Line: 11219 -- err tmm8[18022]: 01490514:3: 00000000: Access encountered error: ERR_ARG. File: ../modules/hudfilter/access/access.c, Function: access_process_state_client_classify_req, Line: 3308 -- err tmm8[18022]: 01490514:3: 00000000: Access encountered error: ERR_ARG. File: ../modules/hudfilter/access/access.c, Function: hud_access_handler, Line: 2311

Impact

Logs might give the appearance of many issues, even if there are no behavioral anomalies.

Conditions

An internal software API call triggers an unexpected result.

Workaround

None

Fix Information

Change the following SystemDB variable to disable to suppress these logs: tmsh modify /sys db tmm.access.extendedlog value disable

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips