From: Chen Gang <gang.chen@asianux.com>
Date: Wed, 3 Jul 2013 22:04:53 +0000 (-0700)
Subject: arch/frv/kernel/setup.c: use strncmp() instead of memcmp()
X-Git-Tag: accepted/tizen/common/20141203.182822~1935^2~263
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=98bd8d05ea5798ff3179ee33f0ca2789722ecc5a;p=platform%2Fkernel%2Flinux-arm64.git

arch/frv/kernel/setup.c: use strncmp() instead of memcmp()

'cmdline' is a NUL terminated string, when its length < 4, memcmp()
will cause memory access out of boundary.

So use strncmp() instead of memcmp().

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/arch/frv/kernel/setup.c b/arch/frv/kernel/setup.c
index f78f8cb..ae3a670 100644
--- a/arch/frv/kernel/setup.c
+++ b/arch/frv/kernel/setup.c
@@ -735,7 +735,7 @@ static void __init parse_cmdline_early(char *cmdline)
 		/* "mem=XXX[kKmM]" sets SDRAM size to <mem>, overriding the value we worked
 		 * out from the SDRAM controller mask register
 		 */
-		if (!memcmp(cmdline, "mem=", 4)) {
+		if (!strncmp(cmdline, "mem=", 4)) {
 			unsigned long long mem_size;
 
 			mem_size = memparse(cmdline + 4, &cmdline);