linux-kernel - [PATCH v6 03/14] arm64/numa: add nid check for memory block

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Message-ID: <1470908028-8596-4-git-send-email-thunder.leizhen@huawei.com>
Date:	Thu, 11 Aug 2016 17:33:37 +0800
From:	Zhen Lei <thunder.leizhen@...wei.com>
To:	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Rob Herring <robh+dt@...nel.org>,
	"Frank Rowand" <frowand.list@...il.com>,
	devicetree <devicetree@...r.kernel.org>
CC:	Zefan Li <lizefan@...wei.com>, Xinwei Hu <huxinwei@...wei.com>,
	"Tianhong Ding" <dingtianhong@...wei.com>,
	Hanjun Guo <guohanjun@...wei.com>,
	Zhen Lei <thunder.leizhen@...wei.com>
Subject: [PATCH v6 03/14] arm64/numa: add nid check for memory block

Use the same tactic to cpu and numa-distance nodes.

Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
---
 drivers/of/of_numa.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/of/of_numa.c b/drivers/of/of_numa.c
index 7b3fbdc..afaeb9c 100644
--- a/drivers/of/of_numa.c
+++ b/drivers/of/of_numa.c
@@ -75,6 +75,11 @@ static int __init of_numa_parse_memory_nodes(void)
 			 */
 			continue;

+		if (nid >= MAX_NUMNODES) {
+			pr_warn("NUMA: Node id %u exceeds maximum value\n", nid);
+			return -EINVAL;
+		}
+
 		for (i = 0; !r && !of_address_to_resource(np, i, &rsrc); i++)
 			r = numa_add_memblk(nid, rsrc.start, rsrc.end + 1);

--
2.5.0