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Add pointer check for NULL before dereference it.

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Signed-off-by: ydong10
Reviewed-by: rsun3, lgao4

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12472 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
ydong10
2011-09-29 06:33:23 +00:00
parent 57ad9d43b1
commit 04eb20aa85
7 changed files with 28 additions and 5 deletions
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7
MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariable.c
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@ -1177,6 +1177,7 @@ EmuGetVariable (
VARIABLE_POINTER_TRACK Variable;
UINTN VarDataSize;
EFI_STATUS Status;
UINT8 *VariableDataPtr;
if (VariableName == NULL || VendorGuid == NULL || DataSize == NULL) {
return EFI_INVALID_PARAMETER;
@ -1201,8 +1202,10 @@ EmuGetVariable (
Status = EFI_INVALID_PARAMETER;
goto Done;
}
CopyMem (Data, GetVariableDataPtr (Variable.CurrPtr), VarDataSize);
VariableDataPtr = GetVariableDataPtr (Variable.CurrPtr);
ASSERT (VariableDataPtr != NULL);
CopyMem (Data, VariableDataPtr, VarDataSize);
if (Attributes != NULL) {
*Attributes = Variable.CurrPtr->Attributes;
}