Last Modified: Sep 13, 2023
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
12.1.4, 12.1.4.1
Fixed In:
13.0.0, 12.1.5
Opened: Sep 18, 2016 Severity: 3-Major
Csyncd memory use increases over time. It may fail due to large size (>2 to 3 GB), possibly leading to this ltm log: err csyncd[8258]: 013b0004:3: Fatal error: fork failed. Memory pressure may develop, leading to an increased use of swap, and the system may become sluggish and show other low-memory symptoms. If memory pressure is severe, the Linux oom killer will likely terminate csyncd. On systems with more free memory, csyncd will terminate with a core file when it is approaching 4GB in size. In both cases csyncd automatically restarts.
Low free memory may lead to system instability. If memory pressure is severe, the Linux oom killer will likely terminate csyncd. On systems with more free memory, csyncd will terminate with a core file when it is above ~2.2 GB in size. In both cases csyncd automatically restarts.
Multi-bladed vCMP guest or VIPRION.
Restart csycnd on all blades to free the memory it has in use: clsh bigstart restart csyncd This is typically not service-affecting.
Memory leak identified and fixed.