--- old/src/hotspot/os/linux/os_linux.cpp	2018-09-19 16:59:33.062989864 +0530
+++ new/src/hotspot/os/linux/os_linux.cpp	2018-09-19 16:59:32.942989864 +0530
@@ -5720,7 +5720,13 @@
 int os::fork_and_exec(char* cmd) {
   const char * argv[4] = {"sh", "-c", cmd, NULL};
 
-  pid_t pid = fork();
+  pid_t pid ;
+
+  if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
+    pid = vfork();
+  } else {
+    pid = fork();
+  }
 
   if (pid < 0) {
     // fork failed