linux-kernel - [PATCH 6/6] x86, KASLR: Rename "random" to "random

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Date:	Mon, 18 Apr 2016 09:42:15 -0700
From:	Kees Cook <keescook@...omium.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Kees Cook <keescook@...omium.org>, Yinghai Lu <yinghai@...nel.org>,
	Baoquan He <bhe@...hat.com>, "H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andrey Ryabinin <aryabinin@...tuozzo.com>,
	Dmitry Vyukov <dvyukov@...gle.com>,
	"H.J. Lu" <hjl.tools@...il.com>,
	Josh Poimboeuf <jpoimboe@...hat.com>,
	Borislav Petkov <bp@...e.de>,
	Andy Lutomirski <luto@...nel.org>, linux-kernel@...r.kernel.org
Subject: [PATCH 6/6] x86, KASLR: Rename "random" to "random_addr"

The variable "random" is also the name of a libc function. It's better
coding style to avoid overloading such things, so rename it to the more
accurate "random_addr".

Suggested-by: Ingo Molnar <mingo@...nel.org>
Signed-off-by: Kees Cook <keescook@...omium.org>
---
 arch/x86/boot/compressed/kaslr.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c
index 9e03190d00ad..9c29e7885ef0 100644
--- a/arch/x86/boot/compressed/kaslr.c
+++ b/arch/x86/boot/compressed/kaslr.c
@@ -312,7 +312,7 @@ unsigned char *choose_random_location(unsigned char *input,
 				      unsigned long output_size)
 {
 	unsigned long choice = (unsigned long)output;
-	unsigned long random;
+	unsigned long random_addr;
 
 #ifdef CONFIG_HIBERNATION
 	if (!cmdline_find_option_bool("kaslr")) {
@@ -333,17 +333,17 @@ unsigned char *choose_random_location(unsigned char *input,
 		       (unsigned long)output, output_size);
 
 	/* Walk e820 and find a random address. */
-	random = find_random_addr(choice, output_size);
-	if (!random) {
+	random_addr = find_random_addr(choice, output_size);
+	if (!random_addr) {
 		debug_putstr("KASLR could not find suitable E820 region...\n");
 		goto out;
 	}
 
 	/* Always enforce the minimum. */
-	if (random < choice)
+	if (random_addr < choice)
 		goto out;
 
-	choice = random;
+	choice = random_addr;
 out:
 	return (unsigned char *)choice;
 }
-- 
2.6.3