From 58972f5cf7e1163e474f961afe34e200fd5dac11 Mon Sep 17 00:00:00 2001
From: Ruiyu Ni <ruiyu.ni@intel.com>
Date: Wed, 13 Jul 2016 15:44:23 +0800
Subject: [PATCH] ShellPkg/DrvCfg: Handle memory allocation failure

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
---
 .../UefiShellDriver1CommandsLib/DrvCfg.c        | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/ShellPkg/Library/UefiShellDriver1CommandsLib/DrvCfg.c b/ShellPkg/Library/UefiShellDriver1CommandsLib/DrvCfg.c
index 609d076da0..0d12f01199 100644
--- a/ShellPkg/Library/UefiShellDriver1CommandsLib/DrvCfg.c
+++ b/ShellPkg/Library/UefiShellDriver1CommandsLib/DrvCfg.c
@@ -2,7 +2,7 @@
   Main file for DrvCfg shell Driver1 function.
 
   (C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
-  Copyright (c) 2010 - 2015, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2010 - 2016, Intel Corporation. All rights reserved.<BR>
   This program and the accompanying materials
   are licensed and made available under the terms and conditions of the BSD License
   which accompanies this distribution.  The full text of the license may be found at
@@ -57,8 +57,11 @@ FindHiiHandleViaDevPath(
   Status = HiiDb->ListPackageLists(HiiDb, EFI_HII_PACKAGE_DEVICE_PATH, NULL, &HandleBufferSize, HandleBuffer);
   if (Status == EFI_BUFFER_TOO_SMALL) {
     HandleBuffer = AllocateZeroPool(HandleBufferSize);
-    ASSERT (HandleBuffer != NULL);
-    Status = HiiDb->ListPackageLists(HiiDb, EFI_HII_PACKAGE_DEVICE_PATH, NULL, &HandleBufferSize, HandleBuffer);
+    if (HandleBuffer == NULL) {
+      Status = EFI_OUT_OF_RESOURCES;
+    } else {
+      Status = HiiDb->ListPackageLists (HiiDb, EFI_HII_PACKAGE_DEVICE_PATH, NULL, &HandleBufferSize, HandleBuffer);
+    }
   }
   if (EFI_ERROR(Status)) {
     SHELL_FREE_NON_NULL(HandleBuffer);
@@ -75,8 +78,12 @@ FindHiiHandleViaDevPath(
     Status = HiiDb->ExportPackageLists(HiiDb, HandleBuffer[LoopVariable], &MainBufferSize, MainBuffer);
     if (Status == EFI_BUFFER_TOO_SMALL) {
       MainBuffer = AllocateZeroPool(MainBufferSize);
-      ASSERT (MainBuffer != NULL);
-      Status = HiiDb->ExportPackageLists(HiiDb, HandleBuffer[LoopVariable], &MainBufferSize, MainBuffer);
+      if (MainBuffer != NULL) {
+        Status = HiiDb->ExportPackageLists (HiiDb, HandleBuffer[LoopVariable], &MainBufferSize, MainBuffer);
+      }
+    }
+    if (EFI_ERROR (Status)) {
+      continue;
     }
     //
     // Enumerate through the block of returned memory.