linux-kernel - [PATCH v3 3/5] arm64/numa: add nid check for memory block

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Message-ID: <1464834491-12024-4-git-send-email-thunder.leizhen@huawei.com>
Date:	Thu, 2 Jun 2016 10:28:09 +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>,
	Ganapatrao Kulkarni <gkulkarni@...iumnetworks.com>,
	Robert Richter <rrichter@...ium.com>,
	"David Daney" <david.daney@...ium.com>,
	Rob Herring <robh+dt@...nel.org>,
	"Frank Rowand" <frowand.list@...il.com>,
	Grant Likely <grant.likely@...aro.org>,
	devicetree <devicetree@...r.kernel.org>,
	linux-kernel <linux-kernel@...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 v3 3/5] 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>
---
 arch/arm64/mm/numa.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/mm/numa.c b/arch/arm64/mm/numa.c
index c7fe3ec..2601660 100644
--- a/arch/arm64/mm/numa.c
+++ b/arch/arm64/mm/numa.c
@@ -141,6 +141,11 @@ int __init numa_add_memblk(int nid, u64 start, u64 end)
 {
 	int ret;

+	if (nid >= MAX_NUMNODES) {
+		pr_warn("NUMA: Node id %u exceeds maximum value\n", nid);
+		return -EINVAL;
+	}
+
 	ret = memblock_set_node(start, (end - start), &memblock.memory, nid);
 	if (ret < 0) {
 		pr_err("NUMA: memblock [0x%llx - 0x%llx] failed to add on node %d\n",
--
2.5.0