Quartus crash with "Internal Error: Sub-system: THR"

Hi, I actually solved the problem yesterday.

My compile system uses Lustre filesystem. The filesystem setup was a bit broken, and it was returning ENOSYS for fcntl(..., F_SETLK, ...) call.

After fixing the filesystem, compilation works perfectly.

Here is the script I used to debug:

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
 
int main() {
  int fd = open("a.txt", O_RDWR);
  if (fd == -1) {
    printf("open error (errno=%d)\n", errno);
    exit(1);
  }
 
  struct flock lock;
  lock.l_type = F_WRLCK;
  lock.l_whence = SEEK_SET;
  lock.l_start = 0;
  lock.l_len = 1;
  int ret = fcntl(fd, F_SETLK, &lock);
  if (ret == -1) {
    printf("fcntl error (errno=%d)\n", errno);
    exit(1);
  }
 
  printf("no error\n");
 
  return 0;
}

If someone get "fcntl error (errno=38)", that's the problem.