X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=mm%2Fusercopy.c;h=b34996a3860b0bad6676f26eeb38a7469cc63de4;hb=931337c856399c09149ec51d72c40ec37d9024eb;hp=c56b97b7c49ccf579784d65cccd7908310d64c38;hpb=1a88e2aad5d0633e5c316af1d50c27aa0b22155d;p=firefly-linux-kernel-4.4.55.git

diff --git a/mm/usercopy.c b/mm/usercopy.c
index c56b97b7c49c..b34996a3860b 100644
--- a/mm/usercopy.c
+++ b/mm/usercopy.c
@@ -15,6 +15,7 @@
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
 #include <linux/mm.h>
+#include <linux/sched.h>
 #include <linux/slab.h>
 #include <asm/sections.h>
 
@@ -124,7 +125,7 @@ static inline const char *check_kernel_text_object(const void *ptr,
 static inline const char *check_bogus_address(const void *ptr, unsigned long n)
 {
 	/* Reject if object wraps past end of memory. */
-	if (ptr + n < ptr)
+	if ((unsigned long)ptr + n < (unsigned long)ptr)
 		return "<wrapped address>";
 
 	/* Reject if NULL or ZERO-allocation. */