diff --git a/CTestConfig.cmake b/CTestConfig.cmake
index dae4b567bc..be9c516a6a 100644
--- a/CTestConfig.cmake
+++ b/CTestConfig.cmake
@@ -14,16 +14,4 @@ set(MEMORYCHECK_SUPPRESSIONS_FILE ${CMAKE_SOURCE_DIR}/scripts/dashboard/nightly/
 
 # Ignore tests that are currently failing, remove tests here as they are fixed
 list(APPEND CTEST_CUSTOM_MEMCHECK_IGNORE 
-Engine.BP.BPWriteReadAsStreamTestADIOS2.ReaderWriterDefineVariable.BP5.Serial
-Remote.BPWriteReadADIOS2stdio.GetRemote
-Remote.BPWriteMemorySelectionRead.GetRemote
-Remote.BPWriteMemorySelectionRead.FileRemote
-remoteServerCleanup
-Engine.SST.SstWriteFails.InvalidBeginStep.Serial
-Staging.1x1.Local2.CommMin.BP5.SST
-Staging.1x1Struct.CommMin.BP5.SST
-Staging.WriteMemorySelectionRead.1x1.CommMin.BP5.SST
-Staging.1x1.Local2.CommMin.BP.SST
-Staging.WriteMemorySelectionRead.1x1.CommMin.BP.SST
-Staging.1x1Struct.BP5
 )
diff --git a/scripts/ci/cmake/adios-asan.supp b/scripts/ci/cmake/adios-asan.supp
index d36b448f8d..9f9184380e 100644
--- a/scripts/ci/cmake/adios-asan.supp
+++ b/scripts/ci/cmake/adios-asan.supp
@@ -1,2 +1,4 @@
 leak:ps_make_timer_name_
-leak:ibv_get_device_list
\ No newline at end of file
+leak:ibv_get_device_list
+leak:add_transport_to_cm
+leak:INT_CMadd_delayed_task
diff --git a/source/adios2/toolkit/format/bp5/BP5Deserializer.cpp b/source/adios2/toolkit/format/bp5/BP5Deserializer.cpp
index 9df8d55239..0e7574a17c 100644
--- a/source/adios2/toolkit/format/bp5/BP5Deserializer.cpp
+++ b/source/adios2/toolkit/format/bp5/BP5Deserializer.cpp
@@ -1996,6 +1996,8 @@ BP5Deserializer::~BP5Deserializer()
         free(VarRec.second->VarName);
         if (VarRec.second->Operator)
             free(VarRec.second->Operator);
+        if (VarRec.second->Def)
+            delete VarRec.second->Def;
         delete VarRec.second;
     }
     if (m_FreeableMBA)
diff --git a/source/adios2/toolkit/format/bp5/BP5Serializer.cpp b/source/adios2/toolkit/format/bp5/BP5Serializer.cpp
index 2ff1e5e802..2f618089dc 100644
--- a/source/adios2/toolkit/format/bp5/BP5Serializer.cpp
+++ b/source/adios2/toolkit/format/bp5/BP5Serializer.cpp
@@ -37,14 +37,16 @@ namespace format
 BP5Serializer::BP5Serializer() { Init(); }
 BP5Serializer::~BP5Serializer()
 {
-    if (!Info.RecMap.empty())
+    if (CurDataBuffer)
+        delete CurDataBuffer;
+    if (!Info.RecNameMap.empty())
     {
-        for (auto &rec : Info.RecMap)
+        for (auto &rec : Info.RecNameMap)
         {
             if (rec.second.OperatorType)
                 free(rec.second.OperatorType);
         }
-        Info.RecMap.clear();
+        Info.RecNameMap.clear();
     }
     if (Info.MetaFieldCount)
         free_FMfield_list(Info.MetaFields);
@@ -82,12 +84,13 @@ void BP5Serializer::Init()
     ((BP5MetadataInfoStruct *)MetadataBuf)->BitField = (std::size_t *)malloc(sizeof(size_t));
     ((BP5MetadataInfoStruct *)MetadataBuf)->DataBlockSize = 0;
 }
-BP5Serializer::BP5WriterRec BP5Serializer::LookupWriterRec(void *Key) const
+BP5Serializer::BP5WriterRec BP5Serializer::LookupWriterRec(void *Variable) const
 {
-    auto it = Info.RecMap.find(Key);
-    if (it != Info.RecMap.end())
+    core::VariableBase *VB = static_cast<core::VariableBase *>(Variable);
+    auto it2 = Info.RecNameMap.find(VB->m_Name);
+    if (it2 != Info.RecNameMap.end())
     {
-        return const_cast<BP5WriterRec>(&(it->second));
+        return const_cast<BP5WriterRec>(&(it2->second));
     }
     return NULL;
 }
@@ -467,6 +470,8 @@ void BP5Serializer::AddDoubleArrayField(FMFieldList *FieldP, int *CountP, const
 void BP5Serializer::ValidateWriterRec(BP5Serializer::BP5WriterRec Rec, void *Variable)
 {
     core::VariableBase *VB = static_cast<core::VariableBase *>(Variable);
+
+    Rec->Key = Variable; // reset this, because Variable might have been destroyed and recreated
     if ((VB->m_Operations.size() == 0) && Rec->OperatorType)
     {
         // removed operator case
@@ -505,7 +510,7 @@ BP5Serializer::BP5WriterRec BP5Serializer::CreateWriterRec(void *Variable, const
 #ifdef ADIOS2_HAVE_DERIVED_VARIABLE
     core::VariableDerived *VD = dynamic_cast<core::VariableDerived *>(VB);
 #endif
-    auto obj = Info.RecMap.insert(std::make_pair(Variable, _BP5WriterRec()));
+    auto obj = Info.RecNameMap.insert(std::make_pair(VB->m_Name, _BP5WriterRec()));
     BP5WriterRec Rec = &obj.first->second;
     if (Type == DataType::String)
         ElemSize = sizeof(char *);
@@ -550,6 +555,8 @@ BP5Serializer::BP5WriterRec BP5Serializer::CreateWriterRec(void *Variable, const
         struct_list[0].struct_size = (int)SD->StructSize();
 
         FMFormat Format = register_data_format(Info.LocalFMContext, &struct_list[0]);
+        free_FMfield_list(List);
+        free((void *)struct_list[0].format_name);
 
         int IDLength;
         char *ServerID = get_server_ID_FMformat(Format, &IDLength);
@@ -636,6 +643,8 @@ BP5Serializer::BP5WriterRec BP5Serializer::CreateWriterRec(void *Variable, const
         // Changing the formats renders these invalid
         Info.MetaFormat = NULL;
     }
+    if (TextStructID)
+        free((void *)TextStructID);
     Info.RecCount++;
     return Rec;
 }
@@ -1250,7 +1259,7 @@ BufferV *BP5Serializer::ReinitStepData(BufferV *DataBuffer, bool forceCopyDeferr
 
 void BP5Serializer::CollectFinalShapeValues()
 {
-    for (auto it : Info.RecMap)
+    for (auto it : Info.RecNameMap)
     {
         BP5WriterRec Rec = &it.second;
         if (Rec->Shape == ShapeID::GlobalArray)
diff --git a/source/adios2/toolkit/format/bp5/BP5Serializer.h b/source/adios2/toolkit/format/bp5/BP5Serializer.h
index d07aa727fa..bd5830cfc1 100644
--- a/source/adios2/toolkit/format/bp5/BP5Serializer.h
+++ b/source/adios2/toolkit/format/bp5/BP5Serializer.h
@@ -167,7 +167,7 @@ class BP5Serializer : virtual public BP5Base
         FMFormat AttributeFormat = NULL;
         void *AttributeData = NULL;
         int AttributeSize = 0;
-        std::unordered_map<void *, _BP5WriterRec> RecMap;
+        std::unordered_map<std::string, _BP5WriterRec> RecNameMap;
     };
 
     FMFormat GenericAttributeFormat = NULL;
diff --git a/source/adios2/toolkit/remote/Remote.cpp b/source/adios2/toolkit/remote/Remote.cpp
index 3a397b05a9..29c0da3184 100644
--- a/source/adios2/toolkit/remote/Remote.cpp
+++ b/source/adios2/toolkit/remote/Remote.cpp
@@ -15,6 +15,12 @@ namespace adios2
 Remote::Remote() {}
 
 #ifdef ADIOS2_HAVE_SST
+Remote::~Remote()
+{
+    if (m_conn)
+        CMConnection_close(m_conn);
+}
+
 void OpenResponseHandler(CManager cm, CMConnection conn, void *vevent, void *client_data,
                          attr_list attrs)
 {
@@ -86,9 +92,10 @@ void Remote::Open(const std::string hostname, const int32_t port, const std::str
     atom_t CM_IP_HOSTNAME = -1;
     CM_IP_HOSTNAME = attr_atom_from_string("IP_HOST");
     CM_IP_PORT = attr_atom_from_string("IP_PORT");
-    add_attr(contact_list, CM_IP_HOSTNAME, Attr_String, (attr_value)hostname.c_str());
+    add_attr(contact_list, CM_IP_HOSTNAME, Attr_String, (attr_value)strdup(hostname.c_str()));
     add_attr(contact_list, CM_IP_PORT, Attr_Int4, (attr_value)port);
     m_conn = CMinitiate_conn(ev_state.cm, contact_list);
+    free_attr_list(contact_list);
     if (!m_conn)
         return;
 
@@ -124,9 +131,10 @@ void Remote::OpenSimpleFile(const std::string hostname, const int32_t port,
     atom_t CM_IP_HOSTNAME = -1;
     CM_IP_HOSTNAME = attr_atom_from_string("IP_HOST");
     CM_IP_PORT = attr_atom_from_string("IP_PORT");
-    add_attr(contact_list, CM_IP_HOSTNAME, Attr_String, (attr_value)hostname.c_str());
+    add_attr(contact_list, CM_IP_HOSTNAME, Attr_String, (attr_value)strdup(hostname.c_str()));
     add_attr(contact_list, CM_IP_PORT, Attr_Int4, (attr_value)port);
     m_conn = CMinitiate_conn(ev_state.cm, contact_list);
+    free_attr_list(contact_list);
     if (!m_conn)
         return;
 
@@ -193,5 +201,6 @@ Remote::GetHandle Remote::Read(size_t Start, size_t Size, void *Dest)
 {
     return static_cast<GetHandle>(0);
 };
+Remote::~Remote() {}
 #endif
 } // end namespace adios2
diff --git a/source/adios2/toolkit/remote/Remote.h b/source/adios2/toolkit/remote/Remote.h
index 4e4f24f579..9e432516fa 100644
--- a/source/adios2/toolkit/remote/Remote.h
+++ b/source/adios2/toolkit/remote/Remote.h
@@ -32,6 +32,7 @@ class Remote
      * @param comm passed to m_Comm
      */
     Remote();
+    ~Remote();
 
     explicit operator bool() const { return m_Active; }
 
@@ -55,7 +56,7 @@ class Remote
 #ifdef ADIOS2_HAVE_SST
     void InitCMData();
     RemoteCommon::Remote_evpath_state ev_state;
-    CMConnection m_conn;
+    CMConnection m_conn = NULL;
     std::mutex m_CMInitMutex;
 #endif
     bool m_Active = false;
diff --git a/source/adios2/toolkit/remote/remote_common.h b/source/adios2/toolkit/remote/remote_common.h
index fc75b4a1f0..0d78bd290a 100644
--- a/source/adios2/toolkit/remote/remote_common.h
+++ b/source/adios2/toolkit/remote/remote_common.h
@@ -95,6 +95,7 @@ typedef struct _CloseFileMsg
 typedef struct _KillServerMsg
 {
     int KillResponseCondition;
+    size_t unused; // small messages call stack addressing issues?
 } *KillServerMsg;
 
 typedef struct _KillResponseMsg
diff --git a/source/adios2/toolkit/sst/cp/cp_reader.c b/source/adios2/toolkit/sst/cp/cp_reader.c
index ed58f0da42..13a504f07b 100644
--- a/source/adios2/toolkit/sst/cp/cp_reader.c
+++ b/source/adios2/toolkit/sst/cp/cp_reader.c
@@ -1221,6 +1221,7 @@ static void waitForMetadataWithTimeout(SstStream Stream, float timeout_secs)
         if (timercmp(&now, &end, >))
         {
             CP_verbose(Stream, PerRankVerbose, "Returning from wait after timing out\n");
+            free(TimeoutTask);
             return;
         }
         /* wait until we get the timestep metadata or something else changes */