From 672583a091cdc4199e4c175e9f5585c6e0a65a35 Mon Sep 17 00:00:00 2001
From: Mingqiang Chi <mingqiang.chi@intel.com>
Date: Wed, 24 Oct 2018 13:30:48 +0800
Subject: [PATCH] hv: Check pcpu number in Hw platform detect

if the physical number > CONFIG_MAX_PCPU_NUM,
will return error and panic.

Tracked-On: #861
Signed-off-by: Mingqiang Chi <mingqiang.chi@intel.com>
Reviewed-by: Li, Fei1 <fei1.li@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
---
 hypervisor/arch/x86/cpu.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/hypervisor/arch/x86/cpu.c b/hypervisor/arch/x86/cpu.c
index ace52d3b7..6653823a3 100644
--- a/hypervisor/arch/x86/cpu.c
+++ b/hypervisor/arch/x86/cpu.c
@@ -259,6 +259,11 @@ static int hardware_detect_support(void)
 		return -ENODEV;
 	}
 
+	if (phys_cpu_num > CONFIG_MAX_PCPU_NUM) {
+		pr_fatal("%s, pcpu number(%d) is out of range\n", __func__, phys_cpu_num);
+		return -ENODEV;
+	}
+
 	ret = check_vmx_mmu_cap();
 	if (ret != 0) {
 		return ret;