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diff --git a/kitten/include/arch-x86_64/bug.h b/kitten/include/arch-x86_64/bug.h
new file mode 100644
index 0000000..dca9ae5
--- /dev/null
+++ b/kitten/include/arch-x86_64/bug.h
@@ -0,0 +1,30 @@
+#ifndef __ARCH_BUG_H
+#define __ARCH_BUG_H
+
+#include <lwk/stringify.h>
+
+/*
+ * Tell the user there is some problem.  The exception handler decodes 
+ * this frame.
+ */
+struct bug_frame {
+	unsigned char ud2[2];
+	unsigned char push;
+	signed int filename;
+	unsigned char ret;
+	unsigned short line;
+} __attribute__((packed));
+
+#define HAVE_ARCH_BUG
+/* We turn the bug frame into valid instructions to not confuse
+   the disassembler. Thanks to Jan Beulich & Suresh Siddha
+   for nice instruction selection.
+   The magic numbers generate mov $64bitimm,%eax ; ret $offset. */
+#define BUG() 								\
+	asm volatile(							\
+	"ud2 ; pushq $%c1 ; ret $%c0" :: 				\
+		     "i"(__LINE__), "i" (__FILE__))
+void out_of_line_bug(void);
+
+#include <arch-generic/bug.h>
+#endif