diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c
index f1ea6f6..f66da02 100644
--- a/kernel/kallsyms.c
+++ b/kernel/kallsyms.c
@@ -214,8 +214,10 @@
 			symbol_end = (unsigned long)_etext;
 	}
 
-	*symbolsize = symbol_end - symbol_start;
-	*offset = addr - symbol_start;
+	if (symbolsize)
+		*symbolsize = symbol_end - symbol_start;
+	if (offset)
+		*offset = addr - symbol_start;
 
 	return low;
 }