v4.19.13 snapshot.
diff --git a/arch/ia64/include/asm/bug.h b/arch/ia64/include/asm/bug.h
new file mode 100644
index 0000000..66b37a5
--- /dev/null
+++ b/arch/ia64/include/asm/bug.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_IA64_BUG_H
+#define _ASM_IA64_BUG_H
+
+#ifdef CONFIG_BUG
+#define ia64_abort() __builtin_trap()
+#define BUG() do { \
+ printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); \
+ barrier_before_unreachable(); \
+ ia64_abort(); \
+} while (0)
+
+/* should this BUG be made generic? */
+#define HAVE_ARCH_BUG
+#endif
+
+#include <asm-generic/bug.h>
+
+#endif