linux-kernel - [patch] ARM: fix module-bound check in setting page attributes

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Message-ID: <042801d066b3$0ca78a30$25f69e90$@alibaba-inc.com>
Date:	Wed, 25 Mar 2015 12:20:33 +0800
From:	"Hillf Danton" <hillf.zj@...baba-inc.com>
To:	"'Laura Abbott'" <lauraa@...eaurora.org>
Cc:	"'Russell King'" <rmk+kernel@....linux.org.uk>,
	"linux-kernel" <linux-kernel@...r.kernel.org>,
	<linux@....linux.org.uk>, "Hillf Danton" <hillf.zj@...baba-inc.com>
Subject: [patch] ARM: fix module-bound check in setting page attributes

It was introduced in commit f2ca09f381a59
(ARM: 8311/1: Don't use is_module_addr in setting page attributes)

We have no need to check start twice, but see if end is also in range.

Signed-off-by: Hillf Danton <hillf.zj@...baba-inc.com>
---

--- a/arch/arm/mm/pageattr.c	Wed Mar 25 11:55:13 2015
+++ b/arch/arm/mm/pageattr.c	Wed Mar 25 11:57:31 2015
@@ -52,7 +52,7 @@ static int change_memory_common(unsigned
 	if (start < MODULES_VADDR || start >= MODULES_END)
 		return -EINVAL;
 
-	if (end < MODULES_VADDR || start >= MODULES_END)
+	if (end < MODULES_VADDR || end >= MODULES_END)
 		return -EINVAL;
 
 	data.set_mask = set_mask;
--


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