Zabbix proxy crashed after hitting the vmcachesize limit.

Here's the VMware configuration on the proxy:

StartVMwareCollectors=2
VMwareCacheSize=8M
VMwareFrequency=60
VMwarePerfFrequency=60
VMwareTimeout=10

Here's the log entry during the crash:

9538:20150901:085838.108 End of zbx_vmware_service_get_perf_entity() entity:0x7fbe2c1a0f78
9538:20150901:085838.110 __mem_malloc: skipped 0 asked 512 skip_min 4294967295 skip_max 0
9538:20150901:085838.110 file:vmware.c,line:79 zbx_mem_malloc(): out of memory (requested 512 bytes)
9538:20150901:085838.110 file:vmware.c,line:79 zbx_mem_malloc(): please increase VMwareCacheSize configuration parameter
9161:20150901:085838.131 One child process died (PID:9538,exitcode/signal:1). Exiting ...
9537:20150901:085838.546 Got signal [signal:15(SIGTERM),sender_pid:9161,sender_uid:496,reason:0]. Exiting ...