diff --git a/lldb/source/Host/linux/HostInfoLinux.cpp b/lldb/source/Host/linux/HostInfoLinux.cpp
--- a/lldb/source/Host/linux/HostInfoLinux.cpp
+++ b/lldb/source/Host/linux/HostInfoLinux.cpp
@@ -35,8 +35,8 @@
 
 void HostInfoLinux::Initialize(SharedLibraryDirectoryHelper *helper) {
   HostInfoPosix::Initialize(helper);
-
-  g_fields = new HostInfoLinuxFields();
+  if (!g_fields)
+    g_fields = new HostInfoLinuxFields();
 }
 
 llvm::VersionTuple HostInfoLinux::GetOSVersion() {
diff --git a/lldb/unittests/Host/HostInfoTest.cpp b/lldb/unittests/Host/HostInfoTest.cpp
--- a/lldb/unittests/Host/HostInfoTest.cpp
+++ b/lldb/unittests/Host/HostInfoTest.cpp
@@ -60,3 +60,16 @@
   EXPECT_TRUE(HostInfo::GetXcodeSDKPath(XcodeSDK("CeciNestPasUnOS.sdk")).empty());
 }
 #endif
+
+TEST(HostInfoTest2, InitTwice) {
+  llvm::VersionTuple Version;
+  {
+    SubsystemRAII<FileSystem, HostInfo> subsystems;
+    Version = HostInfo::GetOSVersion();
+  }
+
+  {
+    SubsystemRAII<FileSystem, HostInfo> subsystems;
+    EXPECT_EQ(Version, HostInfo::GetOSVersion());
+  }
+}