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

@@ -771,10 +771,13 @@
 
     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;