Bug ID 540928: Memory leak due to unnecessary logging profile configuration updates.

Last Modified: Sep 13, 2023

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

Known Affected Versions:
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

Fixed In:
13.0.0, 12.1.4.1, 12.1.2 HF1

Opened: Aug 20, 2015

Severity: 3-Major

Related Article: K46545161

Symptoms

There is a memory leak in ASM control plane daemons after processing many calls in a long lived process

Impact

Memory consumption by ASM control plane daemons increases.

Conditions

A) Pool member state changes frequently. or B) Manual learning is enabled (versions 12.x)

Workaround

Restart ASM - which will cause a failover and a down time OR just kill asm_config_server by: ----------------------- pkill -f asm_config_server ----------------------- which will get restarted back by ASM process watchdog in ~15 seconds and should not cause failover nor downtime.

Fix Information

An async worker lifecycle was introduced so long lived processes will now dispatch a fixed number of calls to their workers before retiring them.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips