ensure elf payload args is backed by enough heap memory

Author: john-tornblom

document/en/ps5/exploit.js

@@ -1431,7 +1431,7 @@ async function userland() {
         let test_payload_store      = p.malloc(0x8);
         let pthread_handle_store    = p.malloc(0x8);
         let pthread_value_store     = p.malloc(0x8);
-        let args                    = p.malloc(0x8 * 3);
+        let args                    = p.malloc(0x8 * 6);
 
         // Pass master/victim pair to payload so it can do read/write
         p.write4(rwpair_mem.add32(0x00), master_sock);