Bug #9249 NDBD crashes when mapping SHM segment w/o correct permission

ndb/include/mgmapi/ndbd_exit_codes.h:
  Bug #9249  	NDBD crashes when mapping SHM segment w/o correct permission
  - added new exit code for connection setup failure
ndb/include/transporter/TransporterCallback.hpp:
  Bug #9249  	NDBD crashes when mapping SHM segment w/o correct permission
  - corrected transporter callback error codes to have consistant usage of 0x8000 flag for flagging call to do disconnect
ndb/src/common/transporter/SHM_Transporter.cpp:
  Bug #9249  	NDBD crashes when mapping SHM segment w/o correct permission
  - added error info to errors
ndb/src/common/transporter/SHM_Transporter.unix.cpp:
  Bug #9249  	NDBD crashes when mapping SHM segment w/o correct permission
  - added more error info to errors
ndb/src/common/transporter/Transporter.hpp:
  Bug #9249  	NDBD crashes when mapping SHM segment w/o correct permission
  - added more info to report error
ndb/src/kernel/blocks/qmgr/QmgrMain.cpp:
  Bug #9249  	NDBD crashes when mapping SHM segment w/o correct permission
  - added error reporting on connect failure
ndb/src/kernel/error/ndbd_exit_codes.c:
  Bug #9249  	NDBD crashes when mapping SHM segment w/o correct permission
  - new exit code
ndb/src/kernel/vm/FastScheduler.cpp:
  Bug #9249  	NDBD crashes when mapping SHM segment w/o correct permission
  - corrected stack overflow issues
ndb/src/kernel/vm/TransporterCallback.cpp:
  Bug #9249  	NDBD crashes when mapping SHM segment w/o correct permission
  - added error info
  - corrected stak overflow issues
ndb/src/kernel/vm/VMSignal.hpp:
  Bug #9249  	NDBD crashes when mapping SHM segment w/o correct permission
  - added struct to allocate smaller Signal
ndb/src/mgmsrv/ConfigInfo.cpp:
  Bug #9249  	NDBD crashes when mapping SHM segment w/o correct permission
  - enable usage of SHM default section
ndb/src/ndbapi/TransporterFacade.cpp:
  Bug #9249  	NDBD crashes when mapping SHM segment w/o correct permission
  - minor syntax changes

ndb/include/mgmapi/ndbd_exit_codes.h

@@ -100,6 +100,7 @@ typedef ndbd_exit_classification_enum ndbd_exit_classification;
 #define NDBD_EXIT_SIGNAL_LOST                 6051
 #define NDBD_EXIT_SIGNAL_LOST_SEND_BUFFER_FULL 6052
 #define NDBD_EXIT_ILLEGAL_SIGNAL              6053
+#define NDBD_EXIT_CONNECTION_SETUP_FAILED     6054
 
 /* NDBCNTR 6100-> */
 #define NDBD_EXIT_RESTART_TIMEOUT             6100

ndb/include/transporter/TransporterCallback.hpp

@@ -82,6 +82,8 @@ void
 reportDisconnect(void * callbackObj,
 		 NodeId nodeId, Uint32 errNo); 
 
+#define TE_DO_DISCONNECT 0x8000
+
 enum TransporterError { 
   TE_NO_ERROR = 0,
   /** 
@@ -111,7 +113,7 @@ enum TransporterError {
    * 
    * Recommended behavior: setPerformState(PerformDisconnect) 
    */ 
-  TE_INVALID_MESSAGE_LENGTH = 0x8003, 
+  TE_INVALID_MESSAGE_LENGTH = 0x3 | TE_DO_DISCONNECT, 
    
   /** 
    * TE_INVALID_CHECKSUM 
@@ -120,7 +122,7 @@ enum TransporterError {
    * 
    * Recommended behavior: setPerformState(PerformDisonnect) 
    */ 
-  TE_INVALID_CHECKSUM = 0x8004, 
+  TE_INVALID_CHECKSUM = 0x4 | TE_DO_DISCONNECT, 
  
   /** 
    * TE_COULD_NOT_CREATE_SOCKET 
@@ -129,7 +131,7 @@ enum TransporterError {
    * 
    * Recommended behavior: setPerformState(PerformDisonnect) 
    */ 
-  TE_COULD_NOT_CREATE_SOCKET = 0x8005, 
+  TE_COULD_NOT_CREATE_SOCKET = 0x5, 
  
   /** 
    * TE_COULD_NOT_BIND_SOCKET 
@@ -138,7 +140,7 @@ enum TransporterError {
    * 
    * Recommended behavior: setPerformState(PerformDisonnect) 
    */ 
-  TE_COULD_NOT_BIND_SOCKET = 0x8006, 
+  TE_COULD_NOT_BIND_SOCKET = 0x6, 
  
   /** 
    * TE_LISTEN_FAILED 
@@ -147,7 +149,7 @@ enum TransporterError {
    * 
    * Recommended behavior: setPerformState(PerformDisonnect) 
    */ 
-  TE_LISTEN_FAILED = 0x8007, 
+  TE_LISTEN_FAILED = 0x7, 
  
   /** 
    * TE_ACCEPT_RETURN_ERROR 
@@ -158,7 +160,7 @@ enum TransporterError {
    * Recommended behavior: Ignore  
    *   (or possible do setPerformState(PerformDisconnect) 
    */ 
-  TE_ACCEPT_RETURN_ERROR = 0x8008 
+  TE_ACCEPT_RETURN_ERROR = 0x8 
  
   /** 
    * TE_SHM_DISCONNECT  
@@ -167,7 +169,7 @@ enum TransporterError {
    * 
    * Recommended behavior: setPerformState(PerformDisonnect) 
    */ 
-  ,TE_SHM_DISCONNECT = 0x800b 
+  ,TE_SHM_DISCONNECT = 0xb | TE_DO_DISCONNECT
  
   /** 
    * TE_SHM_IPC_STAT 
@@ -178,7 +180,12 @@ enum TransporterError {
    * 
    * Recommended behavior: setPerformState(PerformDisonnect) 
    */ 
-  ,TE_SHM_IPC_STAT = 0x800c 
+  ,TE_SHM_IPC_STAT = 0xc | TE_DO_DISCONNECT
+
+  /**
+   * Permanent error
+   */
+  ,TE_SHM_IPC_PERMANENT = 0x21 
  
   /** 
    * TE_SHM_UNABLE_TO_CREATE_SEGMENT 
@@ -188,7 +195,7 @@ enum TransporterError {
    * 
    * Recommended behavior: setPerformState(PerformDisonnect) 
    */ 
-  ,TE_SHM_UNABLE_TO_CREATE_SEGMENT = 0x800d 
+  ,TE_SHM_UNABLE_TO_CREATE_SEGMENT = 0xd 
  
   /** 
    * TE_SHM_UNABLE_TO_ATTACH_SEGMENT 
@@ -198,7 +205,7 @@ enum TransporterError {
    * 
    * Recommended behavior: setPerformState(PerformDisonnect) 
    */ 
-  ,TE_SHM_UNABLE_TO_ATTACH_SEGMENT = 0x800e 
+  ,TE_SHM_UNABLE_TO_ATTACH_SEGMENT = 0xe 
  
   /** 
    * TE_SHM_UNABLE_TO_REMOVE_SEGMENT 
@@ -208,12 +215,12 @@ enum TransporterError {
    * Recommended behavior: Ignore (not much to do) 
    *                       Print warning to logfile 
    */ 
-  ,TE_SHM_UNABLE_TO_REMOVE_SEGMENT = 0x800f 
+  ,TE_SHM_UNABLE_TO_REMOVE_SEGMENT = 0xf 
  
-  ,TE_TOO_SMALL_SIGID = 0x0010 
-  ,TE_TOO_LARGE_SIGID = 0x0011 
-  ,TE_WAIT_STACK_FULL = 0x8012 
-  ,TE_RECEIVE_BUFFER_FULL = 0x8013 
+  ,TE_TOO_SMALL_SIGID = 0x10 
+  ,TE_TOO_LARGE_SIGID = 0x11 
+  ,TE_WAIT_STACK_FULL = 0x12 | TE_DO_DISCONNECT
+  ,TE_RECEIVE_BUFFER_FULL = 0x13 | TE_DO_DISCONNECT
  
   /** 
    * TE_SIGNAL_LOST_SEND_BUFFER_FULL 
@@ -222,7 +229,7 @@ enum TransporterError {
    *   a signal is dropped!! very bad very bad 
    * 
    */ 
-  ,TE_SIGNAL_LOST_SEND_BUFFER_FULL = 0x8014 
+  ,TE_SIGNAL_LOST_SEND_BUFFER_FULL = 0x14 | TE_DO_DISCONNECT
  
   /** 
    * TE_SIGNAL_LOST 
@@ -231,14 +238,14 @@ enum TransporterError {
    *   a signal is dropped!! very bad very bad 
    * 
    */ 
-  ,TE_SIGNAL_LOST = 0x8015 
+  ,TE_SIGNAL_LOST = 0x15 
  
   /** 
    * TE_SEND_BUFFER_FULL 
    *  
    *   The send buffer was full, but sleeping for a while solved it 
    */ 
-  ,TE_SEND_BUFFER_FULL = 0x0016 
+  ,TE_SEND_BUFFER_FULL = 0x16 
  
   /** 
    * TE_SCI_UNABLE_TO_CLOSE_CHANNEL 
@@ -246,7 +253,7 @@ enum TransporterError {
    *  Unable to close the sci channel and the resources allocated by  
    *  the sisci api. 
    */ 
-  ,TE_SCI_UNABLE_TO_CLOSE_CHANNEL = 0x8016 
+  ,TE_SCI_UNABLE_TO_CLOSE_CHANNEL = 0x22 
  
   /** 
    * TE_SCI_LINK_ERROR 
@@ -255,7 +262,7 @@ enum TransporterError {
    *  No point in continuing. Must check the connections. 
    * Recommended behavior: setPerformState(PerformDisonnect) 
    */ 
-  ,TE_SCI_LINK_ERROR = 0x8017 
+  ,TE_SCI_LINK_ERROR = 0x0017 
  
   /** 
    * TE_SCI_UNABLE_TO_START_SEQUENCE 
@@ -264,14 +271,14 @@ enum TransporterError {
    *  are exumed or no sequence has been created. 
    *  Recommended behavior: setPerformState(PerformDisonnect) 
    */ 
-  ,TE_SCI_UNABLE_TO_START_SEQUENCE = 0x8018 
+  ,TE_SCI_UNABLE_TO_START_SEQUENCE = 0x18 | TE_DO_DISCONNECT
    
   /** 
    * TE_SCI_UNABLE_TO_REMOVE_SEQUENCE 
    *  
    *  Could not remove a sequence 
    */ 
-  ,TE_SCI_UNABLE_TO_REMOVE_SEQUENCE = 0x8019 
+  ,TE_SCI_UNABLE_TO_REMOVE_SEQUENCE = 0x19 | TE_DO_DISCONNECT
  
   /** 
    * TE_SCI_UNABLE_TO_CREATE_SEQUENCE 
@@ -280,7 +287,7 @@ enum TransporterError {
    *  exempted. Must reboot. 
    *  Recommended behavior: setPerformState(PerformDisonnect) 
    */ 
-  ,TE_SCI_UNABLE_TO_CREATE_SEQUENCE = 0x801a 
+  ,TE_SCI_UNABLE_TO_CREATE_SEQUENCE = 0x1a | TE_DO_DISCONNECT
  
   /** 
    * TE_SCI_UNRECOVERABLE_DATA_TFX_ERROR 
@@ -288,7 +295,7 @@ enum TransporterError {
    *  Tried to send data on redundant link but failed. 
    *  Recommended behavior: setPerformState(PerformDisonnect) 
    */ 
-  ,TE_SCI_UNRECOVERABLE_DATA_TFX_ERROR = 0x801b 
+  ,TE_SCI_UNRECOVERABLE_DATA_TFX_ERROR = 0x1b | TE_DO_DISCONNECT
  
   /** 
    * TE_SCI_CANNOT_INIT_LOCALSEGMENT 
@@ -297,7 +304,7 @@ enum TransporterError {
    *  gone wrong (no system resources). Must reboot. 
    *  Recommended behavior: setPerformState(PerformDisonnect) 
    */ 
-  ,TE_SCI_CANNOT_INIT_LOCALSEGMENT = 0x801c 
+  ,TE_SCI_CANNOT_INIT_LOCALSEGMENT = 0x1c | TE_DO_DISCONNECT
  
   /** 
    * TE_SCI_CANNOT_MAP_REMOTESEGMENT 
@@ -306,7 +313,7 @@ enum TransporterError {
    *  Must reboot system. 
    *  Recommended behavior: setPerformState(PerformDisonnect) 
    */ 
-  ,TE_SCI_CANNOT_MAP_REMOTESEGMENT = 0x801d 
+  ,TE_SCI_CANNOT_MAP_REMOTESEGMENT = 0x1d | TE_DO_DISCONNECT
  
    /** 
    * TE_SCI_UNABLE_TO_UNMAP_SEGMENT 
@@ -314,7 +321,7 @@ enum TransporterError {
    *  Cannot free the resources used by this segment (step 1). 
    *  Recommended behavior: setPerformState(PerformDisonnect) 
    */ 
-  ,TE_SCI_UNABLE_TO_UNMAP_SEGMENT = 0x801e 
+  ,TE_SCI_UNABLE_TO_UNMAP_SEGMENT = 0x1e | TE_DO_DISCONNECT
  
    /** 
    * TE_SCI_UNABLE_TO_REMOVE_SEGMENT 
@@ -324,7 +331,7 @@ enum TransporterError {
    *  to map more segment 
    *  Recommended behavior: setPerformState(PerformDisonnect) 
    */ 
-  ,TE_SCI_UNABLE_TO_REMOVE_SEGMENT = 0x801f 
+  ,TE_SCI_UNABLE_TO_REMOVE_SEGMENT = 0x1f  | TE_DO_DISCONNECT
  
    /** 
    * TE_SCI_UNABLE_TO_DISCONNECT_SEGMENT 
@@ -332,15 +339,18 @@ enum TransporterError {
    *  Cannot disconnect from a remote segment. 
    *  Recommended behavior: setPerformState(PerformDisonnect) 
    */ 
-  ,TE_SCI_UNABLE_TO_DISCONNECT_SEGMENT = 0x8020 
+  ,TE_SCI_UNABLE_TO_DISCONNECT_SEGMENT = 0x20 | TE_DO_DISCONNECT
  
+  /* Used 0x21 */
+  /* Used 0x22 */
 }; 
  
 /** 
  * Report error 
  */ 
 void 
-reportError(void * callbackObj, NodeId nodeId, TransporterError errorCode); 
+reportError(void * callbackObj, NodeId nodeId, TransporterError errorCode,
+	    const char *info = 0);
 
 void
 transporter_recv_from(void* callbackObj, NodeId node);

ndb/src/common/transporter/SHM_Transporter.cpp

@@ -47,6 +47,9 @@ SHM_Transporter::SHM_Transporter(TransporterRegistry &t_reg,
   shmKey(_shmKey),
   shmSize(_shmSize)
 {
+#ifndef NDB_WIN32
+  shmId= 0;
+#endif
   _shmSegCreated = false;
   _attached = false;
 
@@ -202,7 +205,8 @@ SHM_Transporter::connect_server_impl(NDB_SOCKET_TYPE sockfd)
   // Create
   if(!_shmSegCreated){
     if (!ndb_shm_create()) {
-      report_error(TE_SHM_UNABLE_TO_CREATE_SEGMENT);
+      make_error_info(buf, sizeof(buf));
+      report_error(TE_SHM_UNABLE_TO_CREATE_SEGMENT, buf);
       NDB_CLOSE_SOCKET(sockfd);
       DBUG_RETURN(false);
     }
@@ -212,7 +216,8 @@ SHM_Transporter::connect_server_impl(NDB_SOCKET_TYPE sockfd)
   // Attach
   if(!_attached){
     if (!ndb_shm_attach()) {
-      report_error(TE_SHM_UNABLE_TO_ATTACH_SEGMENT);
+      make_error_info(buf, sizeof(buf));
+      report_error(TE_SHM_UNABLE_TO_ATTACH_SEGMENT, buf);
       NDB_CLOSE_SOCKET(sockfd);
       DBUG_RETURN(false);
     }
@@ -224,7 +229,8 @@ SHM_Transporter::connect_server_impl(NDB_SOCKET_TYPE sockfd)
 		   m_transporter_registry.m_shm_own_pid);
   
   // Wait for ok from client
-  if (s_input.gets(buf, 256) == 0) 
+  DBUG_PRINT("info", ("Wait for ok from client"));
+  if (s_input.gets(buf, sizeof(buf)) == 0) 
   {
     NDB_CLOSE_SOCKET(sockfd);
     DBUG_RETURN(false);
@@ -262,10 +268,8 @@ SHM_Transporter::connect_client_impl(NDB_SOCKET_TYPE sockfd)
   SocketOutputStream s_output(sockfd);
   char buf[256];
 
-#if 1
-#endif
-
   // Wait for server to create and attach
+  DBUG_PRINT("info", ("Wait for server to create and attach"));
   if (s_input.gets(buf, 256) == 0) {
     NDB_CLOSE_SOCKET(sockfd);
     DBUG_PRINT("error", ("Server id %d did not attach",
@@ -293,7 +297,8 @@ SHM_Transporter::connect_client_impl(NDB_SOCKET_TYPE sockfd)
   // Attach
   if(!_attached){
     if (!ndb_shm_attach()) {
-      report_error(TE_SHM_UNABLE_TO_ATTACH_SEGMENT);
+      make_error_info(buf, sizeof(buf));
+      report_error(TE_SHM_UNABLE_TO_ATTACH_SEGMENT, buf);
       NDB_CLOSE_SOCKET(sockfd);
       DBUG_PRINT("error", ("Failed attach of shm seg to node %d",
                   remoteNodeId));
@@ -310,6 +315,7 @@ SHM_Transporter::connect_client_impl(NDB_SOCKET_TYPE sockfd)
   
   if (r) {
     // Wait for ok from server
+    DBUG_PRINT("info", ("Wait for ok from server"));
     if (s_input.gets(buf, 256) == 0) {
       NDB_CLOSE_SOCKET(sockfd);
       DBUG_PRINT("error", ("No ok from server node %d",
@@ -330,8 +336,6 @@ bool
 SHM_Transporter::connect_common(NDB_SOCKET_TYPE sockfd)
 {
   if (!checkConnected()) {
-    DBUG_PRINT("error", ("Already connected to node %d",
-                remoteNodeId));
     return false;
   }
   

ndb/src/common/transporter/SHM_Transporter.hpp

@@ -170,6 +170,8 @@ private:
   bool hasDataToRead() const {
     return reader->empty() == false;
   }
+
+  void make_error_info(char info[], int sz);
 };
 
 #endif

ndb/src/common/transporter/SHM_Transporter.unix.cpp

@@ -26,6 +26,12 @@
 #include <sys/ipc.h>
 #include <sys/shm.h>
 
+void SHM_Transporter::make_error_info(char info[], int sz)
+{
+  snprintf(info,sz,"Shm key=%d sz=%d id=%d",
+	   shmKey, shmSize, shmId);
+}
+
 bool
 SHM_Transporter::ndb_shm_create()
 {
@@ -64,12 +70,30 @@ SHM_Transporter::checkConnected(){
   struct shmid_ds info;
   const int res = shmctl(shmId, IPC_STAT, &info);
   if(res == -1){
-    report_error(TE_SHM_IPC_STAT);
+    char buf[128];
+    int r= snprintf(buf, sizeof(buf),
+		    "shmctl(%d, IPC_STAT) errno: %d(%s). ", shmId,
+		    errno, strerror(errno));
+    make_error_info(buf+r, sizeof(buf)-r);
+    DBUG_PRINT("error",(buf));
+    switch (errno)
+    {
+    case EACCES:
+      report_error(TE_SHM_IPC_PERMANENT, buf);
+      break;
+    default:
+      report_error(TE_SHM_IPC_STAT, buf);
+      break;
+    }
     return false;
   }
  
   if(info.shm_nattch != 2){
+    char buf[128];
+    make_error_info(buf, sizeof(buf));
     report_error(TE_SHM_DISCONNECT);
+    DBUG_PRINT("error", ("Already connected to node %d",
+                remoteNodeId));
     return false;
   }
   return true;
@@ -91,6 +115,8 @@ SHM_Transporter::disconnectImpl(){
   if(isServer && _shmSegCreated){
     const int res = shmctl(shmId, IPC_RMID, 0);
     if(res == -1){
+      char buf[64];
+      make_error_info(buf, sizeof(buf));
       report_error(TE_SHM_UNABLE_TO_REMOVE_SEGMENT);
       return;
     }

ndb/src/common/transporter/SHM_Transporter.win32.cpp

@@ -26,6 +26,12 @@
 #include <windows.h>
 
 
+void SHM_Transporter::make_error_info(char info[], int sz)
+{
+  snprintf(info,sz,"Shm key=%d sz=%d",
+	   shmKey, shmSize);
+}
+
 bool
 SHM_Transporter::connectServer(Uint32 timeOutMillis){
   if(!_shmSegCreated)

ndb/src/common/transporter/Transporter.hpp

@@ -161,7 +161,8 @@ protected:
   TransporterRegistry &m_transporter_registry;
   void *get_callback_obj() { return m_transporter_registry.callbackObj; };
   void report_disconnect(int err){m_transporter_registry.report_disconnect(remoteNodeId,err);};
-  void report_error(enum TransporterError err){reportError(get_callback_obj(),remoteNodeId,err);};
+  void report_error(enum TransporterError err, const char *info = 0)
+    { reportError(get_callback_obj(), remoteNodeId, err, info); };
 };
 
 inline

ndb/src/common/transporter/TransporterRegistry.cpp

@@ -1508,8 +1508,8 @@ TransporterRegistry::startReceiving()
     {
       DBUG_PRINT("error",("Install failed"));
       g_eventLogger.error("Failed to install signal handler for"
-			  " SHM transporter errno: %d (%s)", errno, 
-			  strerror(errno));
+			  " SHM transporter, signum %d, errno: %d (%s)",
+			  g_ndb_shm_signum, errno, strerror(errno));
     }
   }
 #endif // NDB_SHM_TRANSPORTER

ndb/src/kernel/blocks/qmgr/QmgrMain.cpp

@@ -1823,11 +1823,14 @@ void Qmgr::execNDB_FAILCONF(Signal* signal)
 /*******************************/
 /* DISCONNECT_REP             */
 /*******************************/
+const char *lookupConnectionError(Uint32 err);
+
 void Qmgr::execDISCONNECT_REP(Signal* signal) 
 {
   jamEntry();
   const DisconnectRep * const rep = (DisconnectRep *)&signal->theData[0];
   const Uint32 nodeId = rep->nodeId;
+  const Uint32 err = rep->err;
   c_connectedNodes.clear(nodeId);
 
   NodeRecPtr nodePtr;
@@ -1838,10 +1841,17 @@ void Qmgr::execDISCONNECT_REP(Signal* signal)
     jam();
     break;
   case ZINIT:
+    ndbrequire(false);
   case ZSTARTING:
+    progError(__LINE__, NDBD_EXIT_CONNECTION_SETUP_FAILED,
+	      lookupConnectionError(err));
+    ndbrequire(false);
   case ZPREPARE_FAIL:
+    ndbrequire(false);
   case ZFAIL_CLOSING:
+    ndbrequire(false);
   case ZAPI_ACTIVE:
+    ndbrequire(false);
   case ZAPI_INACTIVE:
     ndbrequire(false);
   }

ndb/src/kernel/error/ndbd_exit_codes.c

@@ -95,6 +95,7 @@ static const ErrStruct errArray[] =
    {NDBD_EXIT_SIGNAL_LOST,    XIE, "Signal lost (unknown reason)"},
    {NDBD_EXIT_ILLEGAL_SIGNAL, XIE,
     "Illegal signal (version mismatch a possibility)"},
+   {NDBD_EXIT_CONNECTION_SETUP_FAILED, XCE, "Connection setup failed"},
 
    /* Ndbcntr */
    {NDBD_EXIT_RESTART_TIMEOUT, XCE,

ndb/src/kernel/vm/FastScheduler.cpp

@@ -394,7 +394,8 @@ void print_restart(FILE * output, Signal* signal, Uint32 aLevel);
 
 void FastScheduler::dumpSignalMemory(FILE * output)
 {
-  Signal signal;
+  SignalT<25> signalT;
+  Signal &signal= *(Signal*)&signalT;
   Uint32 ReadPtr[5];
   Uint32 tJob;
   Uint32 tLastJob;
@@ -483,17 +484,17 @@ print_restart(FILE * output, Signal* signal, Uint32 aLevel)
  */
 void 
 FastScheduler::reportDoJobStatistics(Uint32 tMeanLoopCount) {
-  Signal signal; 
-  memset(&signal.header, 0, sizeof(signal.header));
-
-  signal.theData[0] = NDB_LE_JobStatistic;
-  signal.theData[1] = tMeanLoopCount;
+  SignalT<2> signalT;
+  Signal &signal= *(Signal*)&signalT;
 
-  memset(&signal.header, 0, sizeof(SignalHeader));
+  memset(&signal.header, 0, sizeof(signal.header));
   signal.header.theLength = 2;
   signal.header.theSendersSignalId = 0;
   signal.header.theSendersBlockRef = numberToRef(0, 0);  
 
+  signal.theData[0] = NDB_LE_JobStatistic;
+  signal.theData[1] = tMeanLoopCount;
+  
   execute(&signal, JBA, CMVMI, GSN_EVENT_REP);
 }
 

ndb/src/kernel/vm/TransporterCallback.cpp

@@ -39,6 +39,26 @@
  */
 SectionSegmentPool g_sectionSegmentPool;
 
+struct ConnectionError
+{
+  enum TransporterError err;
+  const char *text;
+};
+
+static const ConnectionError connectionError[] =
+{
+  { TE_NO_ERROR, "No error"},
+  { TE_SHM_UNABLE_TO_CREATE_SEGMENT, "Unable to create shared memory segment"},
+  { (enum TransporterError) -1, "No connection error message available (please report a bug)"}
+};
+
+const char *lookupConnectionError(Uint32 err)
+{
+  int i= 0;
+  while ((Uint32)connectionError[i].err != err && (Uint32)connectionError[i].err != -1);
+  return connectionError[i].text;
+}
+
 bool
 import(Ptr<SectionSegment> & first, const Uint32 * src, Uint32 len){
   /**
@@ -306,30 +326,54 @@ checkJobBuffer() {
 }
 
 void
-reportError(void * callbackObj, NodeId nodeId, TransporterError errorCode){
+reportError(void * callbackObj, NodeId nodeId,
+	    TransporterError errorCode, const char *info)
+{
 #ifdef DEBUG_TRANSPORTER
-  char buf[255];
-  sprintf(buf, "reportError (%d, 0x%x)", nodeId, errorCode);
-  ndbout << buf << endl;
+  ndbout_c("reportError (%d, 0x%x) %s", nodeId, errorCode, info ? info : "")
 #endif
 
-  if(errorCode == TE_SIGNAL_LOST_SEND_BUFFER_FULL){
+  DBUG_ENTER("reportError");
+  DBUG_PRINT("info",("nodeId %d  errorCode: 0x%x  info: %s",
+		     nodeId, errorCode, info));
+
+  switch (errorCode)
+  {
+  case TE_SIGNAL_LOST_SEND_BUFFER_FULL:
+  {
+    char msg[64];
+    snprintf(msg, sizeof(msg), "Remote note id %d.%s%s", nodeId,
+	     info ? " " : "", info ? info : "");
     ErrorReporter::handleError(NDBD_EXIT_SIGNAL_LOST_SEND_BUFFER_FULL,
-			       "", __FILE__,
-			       NST_ErrorHandler);
+			       msg, __FILE__, NST_ErrorHandler);
   }
-
-  if(errorCode == TE_SIGNAL_LOST){
+  case TE_SIGNAL_LOST:
+  {
+    char msg[64];
+    snprintf(msg, sizeof(msg), "Remote node id %d,%s%s", nodeId,
+	     info ? " " : "", info ? info : "");
     ErrorReporter::handleError(NDBD_EXIT_SIGNAL_LOST,
-			       "", __FILE__,
-			       NST_ErrorHandler);
+			       msg, __FILE__, NST_ErrorHandler);
+  }
+  case TE_SHM_IPC_PERMANENT:
+  {
+    char msg[128];
+    snprintf(msg, sizeof(msg),
+	     "Remote node id %d.%s%s",
+	     nodeId, info ? " " : "", info ? info : "");
+    ErrorReporter::handleError(NDBD_EXIT_CONNECTION_SETUP_FAILED,
+			       msg, __FILE__, NST_ErrorHandler);
+  }
+  default:
+    break;
   }
  
-  if(errorCode & 0x8000){
+  if(errorCode &  & TE_DO_DISCONNECT){
     reportDisconnect(callbackObj, nodeId, errorCode);
   }
   
-  Signal signal;
+  SignalT<3> signalT;
+  Signal &signal= *(Signal*)&signalT;
   memset(&signal.header, 0, sizeof(signal.header));
 
 
@@ -345,6 +389,8 @@ reportError(void * callbackObj, NodeId nodeId, TransporterError errorCode){
   signal.header.theSendersSignalId = 0;
   signal.header.theSendersBlockRef = numberToRef(0, globalData.ownId);
   globalScheduler.execute(&signal, JBA, CMVMI, GSN_EVENT_REP);
+
+  DBUG_VOID_RETURN;
 }
 
 /**
@@ -354,7 +400,8 @@ void
 reportSendLen(void * callbackObj, 
 	      NodeId nodeId, Uint32 count, Uint64 bytes){
 
-  Signal signal;
+  SignalT<3> signalT;
+  Signal &signal= *(Signal*)&signalT;
   memset(&signal.header, 0, sizeof(signal.header));
 
   signal.header.theLength = 3;
@@ -373,7 +420,8 @@ void
 reportReceiveLen(void * callbackObj, 
 		 NodeId nodeId, Uint32 count, Uint64 bytes){
 
-  Signal signal;
+  SignalT<3> signalT;
+  Signal &signal= *(Signal*)&signalT;
   memset(&signal.header, 0, sizeof(signal.header));
 
   signal.header.theLength = 3;  
@@ -392,7 +440,8 @@ reportReceiveLen(void * callbackObj,
 void
 reportConnect(void * callbackObj, NodeId nodeId){
 
-  Signal signal;
+  SignalT<1> signalT;
+  Signal &signal= *(Signal*)&signalT;
   memset(&signal.header, 0, sizeof(signal.header));
 
   signal.header.theLength = 1; 
@@ -409,7 +458,10 @@ reportConnect(void * callbackObj, NodeId nodeId){
 void
 reportDisconnect(void * callbackObj, NodeId nodeId, Uint32 errNo){
 
-  Signal signal;
+  DBUG_ENTER("reportDisconnect");
+
+  SignalT<sizeof(DisconnectRep)/4> signalT;
+  Signal &signal= *(Signal*)&signalT;
   memset(&signal.header, 0, sizeof(signal.header));
 
   signal.header.theLength = DisconnectRep::SignalLength; 
@@ -422,6 +474,8 @@ reportDisconnect(void * callbackObj, NodeId nodeId, Uint32 errNo){
   rep->err = errNo;
 
   globalScheduler.execute(&signal, JBA, CMVMI, GSN_DISCONNECT_REP);
+
+  DBUG_VOID_RETURN;
 }
 
 void

ndb/src/kernel/vm/VMSignal.hpp

@@ -42,6 +42,16 @@ struct NodeReceiverGroup {
   NodeBitmask m_nodes;
 };
 
+template <unsigned T> struct SignalT
+{
+  SignalHeader header;
+  SegmentedSectionPtr m_sectionPtr[3]; 
+  union {
+    Uint32 theData[T];
+    Uint64 dummyAlign;
+  };
+};
+
 /**
  * class used for passing argumentes to blocks
  */

ndb/src/mgmsrv/ConfigInfo.cpp

@@ -150,7 +150,6 @@ ConfigInfo::m_SectionRules[] = {
   { "TCP",  fixPortNumber, 0 }, // has to come after fixHostName
   { "SHM",  fixPortNumber, 0 }, // has to come after fixHostName
   { "SCI",  fixPortNumber, 0 }, // has to come after fixHostName
-  { "SHM",  fixShmKey, 0 },
 
   /**
    * fixExtConnection must be after fixNodeId
@@ -164,6 +163,8 @@ ConfigInfo::m_SectionRules[] = {
   { "*",    fixDepricated, 0 },
   { "*",    applyDefaultValues, "system" },
 
+  { "SHM",  fixShmKey, 0 }, // has to come after apply default values
+
   { DB_TOKEN,   checkLocalhostHostnameMix, 0 },
   { API_TOKEN,  checkLocalhostHostnameMix, 0 },
   { MGM_TOKEN,  checkLocalhostHostnameMix, 0 },
@@ -1798,7 +1799,7 @@ const ConfigInfo::ParamInfo ConfigInfo::m_ParamInfo[] = {
     ConfigInfo::CI_USED,
     false,
     ConfigInfo::CI_INT,
-    "0",
+    UNDEFINED,
     "0",
     STR_VALUE(MAX_INT_RNIL) },
   

ndb/src/ndbapi/TransporterFacade.cpp

@@ -63,13 +63,16 @@ TransporterFacade* TransporterFacade::theFacadeInstance = NULL;
  *****************************************************************************/
 
 void
-reportError(void * callbackObj, NodeId nodeId, TransporterError errorCode){
+reportError(void * callbackObj, NodeId nodeId,
+	    TransporterError errorCode, const char *info)
+{
 #ifdef REPORT_TRANSPORTER
-  ndbout_c("REPORT_TRANSP: reportError (nodeId=%d, errorCode=%d)", 
-	   (int)nodeId, (int)errorCode);
+  ndbout_c("REPORT_TRANSP: reportError (nodeId=%d, errorCode=%d) %s", 
+	   (int)nodeId, (int)errorCode, info ? info : "");
 #endif
-  if(errorCode & 0x8000) {
-    ndbout_c("reportError (%d, %d)\n", (int)nodeId, (int)errorCode);
+  if(errorCode & TE_DO_DISCONNECT) {
+    ndbout_c("reportError (%d, %d) %s", (int)nodeId, (int)errorCode,
+	     info ? info : "");
     ((TransporterFacade*)(callbackObj))->doDisconnect(nodeId);
   }
 }