[tip:x86/boot] x86/KASLR: Rename "random" to "random_addr"

[tip-bot for Kees Cook]

Commit-ID:  9016875df408fc5db6a94a3c5f5f5503c916cf81
Gitweb:     http://git.kernel.org/tip/9016875df408fc5db6a94a3c5f5f5503c916cf81
Author:     Kees Cook <keescook@xxxxxxxxxxxx>
AuthorDate: Mon, 18 Apr 2016 09:42:15 -0700
Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Tue, 19 Apr 2016 10:30:51 +0200

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@xxxxxxxxxx>
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Baoquan He <bhe@xxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxx>
Cc: Brian Gerst <brgerst@xxxxxxxxx>
Cc: Denys Vlasenko <dvlasenk@xxxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Cc: H.J. Lu <hjl.tools@xxxxxxxxx>
Cc: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Yinghai Lu <yinghai@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1460997735-24785-7-git-send-email-keescook@xxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 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 9e03190..9c29e78 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;
 }