diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 8c21aaa..3c5e4c2 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -117,6 +117,8 @@
 	__attribute__ ((format (printf, 3, 4)));
 extern int vscnprintf(char *buf, size_t size, const char *fmt, va_list args)
 	__attribute__ ((format (printf, 3, 0)));
+extern char *kasprintf(gfp_t gfp, const char *fmt, ...)
+	__attribute__ ((format (printf, 2, 3)));
 
 extern int sscanf(const char *, const char *, ...)
 	__attribute__ ((format (scanf, 2, 3)));