From 5a499ac098ea3aa55d9367a25beb58ac6c0fe32a Mon Sep 17 00:00:00 2001
From: Liu Xiaodong <xiaodong.liu@intel.com>
Date: Tue, 12 Jan 2021 05:36:33 -0500
Subject: [PATCH] reactor: improve spdk_reactor_get

Size of g_reactors allocated is g_reactor_count, so
valid lcore should be less than g_reactor_count.

Change-Id: I9d5cde7856d6b400a7188631812b53a7e5701d0f
Signed-off-by: Liu Xiaodong <xiaodong.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/5870
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
---
 lib/event/reactor.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/event/reactor.c b/lib/event/reactor.c
index 67d6c2197..4aa2cd7c4 100644
--- a/lib/event/reactor.c
+++ b/lib/event/reactor.c
@@ -181,6 +181,10 @@ spdk_reactor_get(uint32_t lcore)
 		return NULL;
 	}
 
+	if (lcore >= g_reactor_count) {
+		return NULL;
+	}
+
 	reactor = &g_reactors[lcore];
 
 	if (reactor->flags.is_valid == false) {