diff --git a/sys/compat/linuxkpi/common/include/linux/math.h b/sys/compat/linuxkpi/common/include/linux/math.h
--- a/sys/compat/linuxkpi/common/include/linux/math.h
+++ b/sys/compat/linuxkpi/common/include/linux/math.h
@@ -4,6 +4,7 @@
  * Copyright (c) 2013, 2015  Mellanox Technologies, Ltd.
  * Copyright (c) 2016 Matt Macy <mmacy@FreeBSD.org>
  * Copyright (c) 2019 Johannes Lundberg <johalun@FreeBSD.org>
+ * Copyright (c) 2023 Serenity Cyber Security, LLC.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -54,6 +55,14 @@
 	__ret;						\
 })
 
+#if defined(LINUXKPI_VERSION) && LINUXKPI_VERSION >= 60600
+#define abs_diff(x, y) ({		\
+	__typeof(x) _x = (x);		\
+	__typeof(y) _y = (y);		\
+	_x > _y ? _x - _y : _y - _x;	\
+})
+#endif
+
 static inline uintmax_t
 mult_frac(uintmax_t x, uintmax_t multiplier, uintmax_t divisor)
 {