Fix out of range access in GetRecycleMemoryInfo (#26873)

dotnet · Oct 3, 2019 · 3461971 · 3461971
1 parent db48b17
commit 3461971
Showing 1 changed file with 3 additions and 1 deletion.
diff --git 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];