From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Sat, 22 Jul 2017 07:33:02 +0000 (+0300)
Subject: tile: array underflow in setup_maxnodemem()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=637f23abca87d26e091e0d6647ec878d97d2c6cd;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

tile: array underflow in setup_maxnodemem()

My static checker correctly complains that we should have a lower bound
on "node" to prevent an array underflow.

Fixes: 867e359b97c9 ("arch/tile: core support for Tilera 32-bit chips.")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com>
---

diff --git a/arch/tile/kernel/setup.c b/arch/tile/kernel/setup.c
index 443a70bccc1c..b1474e7d9afb 100644
--- a/arch/tile/kernel/setup.c
+++ b/arch/tile/kernel/setup.c
@@ -140,7 +140,7 @@ static int __init setup_maxnodemem(char *str)
 {
 	char *endp;
 	unsigned long long maxnodemem;
-	long node;
+	unsigned long node;
 
 	node = str ? simple_strtoul(str, &endp, 0) : INT_MAX;
 	if (node >= MAX_NUMNODES || *endp != ':')