see resp. file

ndb/src/kernel/blocks/cmvmi/Cmvmi.cpp:
  adder error insert for error during shutdown
ndb/src/kernel/error/ErrorHandlingMacros.hpp:
  seeror set method for signal handler
ndb/src/kernel/main.cpp:
  adder error insert for error during shutdown
ndb/src/kernel/vm/Emulator.cpp:
  adder error insert for error during shutdown
  + check for error handler invoked by signal handler
ndb/src/kernel/vm/Emulator.hpp:
  enum so signal that Shatdown is invoked by signal handler

ndb/src/kernel/blocks/cmvmi/Cmvmi.cpp

@@ -46,6 +46,7 @@
 
 // Used here only to print event reports on stdout/console.
 EventLogger g_eventLogger;
+extern int simulate_error_during_shutdown;
 
 Cmvmi::Cmvmi(const Configuration & conf) :
   SimulatedBlock(CMVMI, conf)
@@ -148,6 +149,16 @@ void Cmvmi::execNDB_TAMPER(Signal* signal)
   if(ERROR_INSERTED(9997)){
     ndbrequire(false);
   }
+
+  if(ERROR_INSERTED(9996)){
+    simulate_error_during_shutdown= SIGSEGV;
+    ndbrequire(false);
+  }
+
+  if(ERROR_INSERTED(9995)){
+    simulate_error_during_shutdown= SIGSEGV;
+    kill(getpid(), SIGABRT);
+  }
 }//execNDB_TAMPER()
 
 void Cmvmi::execSET_LOGLEVELORD(Signal* signal) 

ndb/src/kernel/error/ErrorHandlingMacros.hpp

@@ -22,6 +22,8 @@
 
 extern const char programName[];
 
+#define ERROR_SET_SIGNAL(messageCategory, messageID, problemData, objectRef) \
+        ErrorReporter::handleError(messageCategory, messageID, problemData, objectRef, NST_ErrorHandlerSignal)
 #define ERROR_SET(messageCategory, messageID, problemData, objectRef) \
         ErrorReporter::handleError(messageCategory, messageID, problemData, objectRef)
         // Description:

ndb/src/kernel/main.cpp

@@ -335,7 +335,13 @@ handler_error(int signum){
   static long thread_id= 0;
 
   if (thread_id != 0 && thread_id == my_thread_id())
-    ; // Shutdown thread received signal
+  {
+    // Shutdown thread received signal
+    signal(signum, SIG_DFL);
+    kill(getpid(), signum);
+    while(true)
+      NdbSleep_MilliSleep(10);
+  }
   if(theShutdownMutex && NdbMutex_Trylock(theShutdownMutex) != 0)
     while(true)
       NdbSleep_MilliSleep(10);
@@ -344,5 +350,5 @@ handler_error(int signum){
   // restart the system
   char errorData[40];
   snprintf(errorData, 40, "Signal %d received", signum);
-  ERROR_SET(fatal, 0, errorData, __FILE__);
+  ERROR_SET_SIGNAL(fatal, 0, errorData, __FILE__);
 }

ndb/src/kernel/vm/Emulator.cpp

@@ -61,6 +61,7 @@ Uint32 theEmulatedJamBlockNumber = 0;
 
 EmulatorData globalEmulatorData;
 NdbMutex * theShutdownMutex = 0;
+int simulate_error_during_shutdown= 0;
 
 EmulatorData::EmulatorData(){
   theConfiguration = 0;
@@ -117,7 +118,8 @@ NdbShutdown(NdbShutdownType type,
     }
   }
   
-  if(NdbMutex_Trylock(theShutdownMutex) == 0){
+  if((type == NST_ErrorHandlerSignal) || // Signal handler has already locked mutex
+     (NdbMutex_Trylock(theShutdownMutex) == 0)){
     globalData.theRestartFlag = perform_stop;
 
     bool restart = false;
@@ -145,6 +147,9 @@ NdbShutdown(NdbShutdownType type,
     case NST_ErrorHandler:
       ndbout << "Error handler " << shutting << " system" << endl;
       break;
+    case NST_ErrorHandlerSignal:
+      ndbout << "Error handler signal " << shutting << " system" << endl;
+      break;
     case NST_Restart:
       ndbout << "Restarting system" << endl;
       break;
@@ -175,6 +180,12 @@ NdbShutdown(NdbShutdownType type,
 #endif
     }
     
+    if (simulate_error_during_shutdown) {
+      kill(getpid(), simulate_error_during_shutdown);
+      while(true)
+	NdbSleep_MilliSleep(10);
+    }
+
     globalEmulatorData.theWatchDog->doStop();
     
 #ifdef VM_TRACE

ndb/src/kernel/vm/Emulator.hpp

@@ -79,6 +79,7 @@ enum NdbShutdownType {
   NST_Normal,
   NST_Watchdog,
   NST_ErrorHandler,
+  NST_ErrorHandlerSignal,
   NST_Restart,
   NST_ErrorInsert
 };