From 3b3b1a29eb89ba93f91213cbebb332a2ac31fa8b Mon Sep 17 00:00:00 2001
From: Kees Cook <keescook@chromium.org>
Date: Tue, 8 May 2018 12:55:26 -0700
Subject: mm: Use overflow helpers in kvmalloc()

Instead of open-coded multiplication and bounds checking, use the new
overflow helper. Additionally prepare for vmalloc() users to add
array_size()-family helpers in the future.

Signed-off-by: Kees Cook <keescook@chromium.org>
---
 include/linux/vmalloc.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'include/linux/vmalloc.h')

diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 1e5d8c392f15..398e9c95cd61 100644
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -8,6 +8,7 @@
 #include <linux/llist.h>
 #include <asm/page.h>		/* pgprot_t */
 #include <linux/rbtree.h>
+#include <linux/overflow.h>
 
 struct vm_area_struct;		/* vma defining user mapping in mm_types.h */
 struct notifier_block;		/* in notifier.h */
-- 
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