src/hotspot/os/linux/os_linux.cpp

*** 5718,5728 ****
  // Unlike system(), this function can be called from signal handler. It
  // doesn't block SIGINT et al.
  int os::fork_and_exec(char* cmd) {
    const char * argv[4] = {"sh", "-c", cmd, NULL};
  
!   pid_t pid = fork();
  
    if (pid < 0) {
      // fork failed
      return -1;
  
--- 5718,5734 ----
  // Unlike system(), this function can be called from signal handler. It
  // doesn't block SIGINT et al.
  int os::fork_and_exec(char* cmd) {
    const char * argv[4] = {"sh", "-c", cmd, NULL};
  
!   pid_t pid ;
! 
!   if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
!     pid = vfork();
!   } else {
!     pid = fork();
!   }
  
    if (pid < 0) {
      // fork failed
      return -1;