From 346197120d99029cf3d3200312ecb00858c7c627 Mon Sep 17 00:00:00 2001
From: Lao Nong <303248153@qq.com>
Date: Thu, 26 Sep 2019 21:36:06 -0400
Subject: [PATCH] Fix out of range access in GetRecycleMemoryInfo (#26873)

---
 src/vm/win32threadpool.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/vm/win32threadpool.h b/src/vm/win32threadpool.h
index 058eaf460150..d7479a9c1cb4 100644
--- a/src/vm/win32threadpool.h
+++ b/src/vm/win32threadpool.h
@@ -749,7 +749,9 @@ class ThreadpoolMgr
 #else // !FEATURE_PAL
             if (PAL_HasGetCurrentProcessorNumber())
             {
-                processorNumber = GetCurrentProcessorNumber();
+                // On linux, GetCurrentProcessorNumber which uses sched_getcpu() can return a value greater than the number
+                // of processors reported by sysconf(_SC_NPROCESSORS_ONLN) when using OpenVZ kernel.
+                processorNumber = GetCurrentProcessorNumber()%NumberOfProcessors;
             }
 #endif // !FEATURE_PAL
             return pRecycledListPerProcessor[processorNumber][memType];