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diff --git a/src/tests/userprog/bad-write2.c b/src/tests/userprog/bad-write2.c
new file mode 100644
index 0000000..753da1e
--- /dev/null
+++ b/src/tests/userprog/bad-write2.c
@@ -0,0 +1,12 @@
+/* This program attempts to write to kernel memory. 
+   This should terminate the process with a -1 exit code. */
+
+#include "tests/lib.h"
+#include "tests/main.h"
+
+void
+test_main (void) 
+{
+  *(int *)0xC0000000 = 42;
+  fail ("should have exited with -1");
+}