--- zzzz-none-000/linux-3.10.107/arch/x86/um/asm/checksum.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/x86/um/asm/checksum.h	2021-02-04 17:41:59.000000000 +0000
@@ -3,6 +3,7 @@
 
 #include <linux/string.h>
 #include <linux/in6.h>
+#include <linux/uaccess.h>
 
 /*
  * computes the checksum of a memory block at buff, length len,