valgrind.supp

{
   zmq_send
   Memcheck:Param
   socketcall.sendto(msg)
   fun:send
   fun:_ZN3zmq9mailbox_t4sendERKNS_9command_tE
   ...
}

{
   v8 Initialize Leaking
   Memcheck:Leak
   fun:_Znam
   fun:_ZN2v88internal22ExternalReferenceTable13PopulateTableEv
   fun:_ZN2v88internal24ExternalReferenceDecoderC1Ev
   fun:_ZN2v88internal12Deserializer11DeserializeEv
   fun:_ZN2v88internal2V810InitializeEPNS0_12DeserializerE
   fun:_ZN2v88internal8Snapshot11DeserializeEPKhi
   fun:_ZN2v88internal8Snapshot10InitializeEPKc
   fun:_ZN2v82V810InitializeEv
   fun:_ZN2v87Context3NewEPNS_22ExtensionConfigurationENS_6HandleINS_14ObjectTemplateEEENS3_INS_5ValueEEE
   ...
}

{
   v8 Debugger Initialize Leaking
   Memcheck:Leak
   fun:_Znam
   fun:_ZN2v88internal19CommandMessageQueueC1Ei
   fun:_ZN2v88internal26LockingCommandMessageQueueC1EPNS0_6LoggerEi
   fun:_ZN2v88internal8DebuggerC1EPNS0_7IsolateE
   fun:_ZN2v88internal7Isolate18InitializeDebuggerEv
   fun:_ZN2v88internal7Isolate4InitEPNS0_12DeserializerE
   fun:_ZN2v88internal8Snapshot11DeserializeEPKhi
   fun:_ZN2v88internal8Snapshot10InitializeEPKc
   ...
}

{
   Node exception throw leak one block
   Memcheck:Leak
   fun:_Znwm
   fun:_ZNSs4_Rep9_S_createEmmRKSaIcE
   fun:_ZNSs9_M_mutateEmmm
   fun:_ZNSs15_M_replace_safeEmmPKcm
   fun:_ZN2ML20trace_exception_nodeEPvPKSt9type_info
   fun:__cxa_throw
   ...
}

{
   tcmalloc trips valgrind
   Memcheck:Param
   msync(start)
   fun:__msync_nocancel
   obj:/usr/lib/libunwind.so.7.0.0
   fun:_ULx86_64_step
   ...
}