Agent crashes with "SIGSEGV" messages.
Release : 11.3 and 11.4 only on Unix box.
Component : CA Workload Automation System Agent
Its bug in 11.3 and 11.4 Agent(where agent tries to use exhausted memory and failes).
This issue has been addressed in 11.5 and 12 plus Agent version.
For more info you may refer to below link with problem number 332.