Add pointer check for NULL before dereference it.

Signed-off-by: ydong10
Reviewed-by: vanjeff

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12474 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 2 insertions, 1 deletions

diff --git a/IntelFrameworkModulePkg/Universal/BdsDxe/BootMaint/Variable.c b/IntelFrameworkModulePkg/Universal/BdsDxe/BootMaint/Variable.c
index 6e6c7266d0..c055537e37 100644
--- a/IntelFrameworkModulePkg/Universal/BdsDxe/BootMaint/Variable.c
+++ b/IntelFrameworkModulePkg/Universal/BdsDxe/BootMaint/Variable.c
@@ -673,6 +673,7 @@ Var_UpdateDriverOption (
                       &gEfiGlobalVariableGuid,

                       &DriverOrderListSize

                       );

+  ASSERT (DriverOrderList != NULL);

   NewDriverOrderList = AllocateZeroPool (DriverOrderListSize + sizeof (UINT16));

   ASSERT (NewDriverOrderList != NULL);

   CopyMem (NewDriverOrderList, DriverOrderList, DriverOrderListSize);

@@ -842,7 +843,7 @@ Var_UpdateBootOption (
                     &gEfiGlobalVariableGuid,

                     &BootOrderListSize

                     );

-

+  ASSERT (BootOrderList != NULL);

   NewBootOrderList = AllocateZeroPool (BootOrderListSize + sizeof (UINT16));

   ASSERT (NewBootOrderList != NULL);

   CopyMem (NewBootOrderList, BootOrderList, BootOrderListSize);