Bug ID 1327961: EAM plugin crashes

Last Modified: May 29, 2024

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

Known Affected Versions:
16.1.3,,,,,, 16.1.4,,,, 17.1.0,,,, 17.1.1,,,

Opened: Aug 07, 2023

Severity: 3-Major


EAM process was restarting and kept coring. Suspecting this as key collision. The key is generated using ftok and isn't guaranteed to avoid collisions on a large box with 18 TMMs, which creates the opportunity for collisions (more shared memory in use).


Impacts functionality.


Errors come across when EAM plugin intialisation eam: shmget name:/var/run/tmm.mp.eam16, key:0xff14561e, size:7, total:789184 : Invalid argument


Fixed the problem by restarting the BIG-IP The fact that a reboot clears the condition also supports this - the underlying inode being used to generate key is changed due to the a new version of the key file being created.

Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips