src/java.base/share/native/libjli/java.c

*** 771,780 ****
--- 771,783 ----
  
      if (JLI_StrCCmp(str, "-Xss") == 0) {
          jlong tmp;
          if (parse_size(str + 4, &tmp)) {
              threadStackSize = tmp;
+             if (threadStackSize < 32 * KB) {
+               threadStackSize = 32 * KB;
+             }
          }
      }
  
      if (JLI_StrCCmp(str, "-Xmx") == 0) {
          jlong tmp;