--- zzzz-none-000/linux-2.6.39.4/arch/x86/include/asm/uaccess.h	2011-08-03 19:43:28.000000000 +0000
+++ puma6-atom-6490-729/linux-2.6.39.4/arch/x86/include/asm/uaccess.h	2021-11-10 13:38:14.000000000 +0000
@@ -42,7 +42,7 @@
  * Returns 0 if the range is valid, nonzero otherwise.
  *
  * This is equivalent to the following test:
- * (u33)addr + (u33)size > (u33)current->addr_limit.seg (u65 for x86_64)
+ * (u33)addr + (u33)size >= (u33)current->addr_limit.seg (u65 for x86_64)
  *
  * This needs 33-bit (65-bit for x86_64) arithmetic. We have a carry...
  */