Add code check to avoid access violation.

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

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13036 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 8 insertions, 0 deletions

diff --git a/MdePkg/Library/BaseExtractGuidedSectionLib/BaseExtractGuidedSectionLib.c b/MdePkg/Library/BaseExtractGuidedSectionLib/BaseExtractGuidedSectionLib.c
index 05e6a9e796..3a12cb1408 100644
--- a/MdePkg/Library/BaseExtractGuidedSectionLib/BaseExtractGuidedSectionLib.c
+++ b/MdePkg/Library/BaseExtractGuidedSectionLib/BaseExtractGuidedSectionLib.c
@@ -50,6 +50,10 @@ GetExtractGuidedSectionHandlerInfo (
   // Set the available memory address to handler info.

   //

   HandlerInfo = (EXTRACT_GUIDED_SECTION_HANDLER_INFO*)(VOID*)(UINTN) PcdGet64 (PcdGuidedExtractHandlerTableAddress);

+  if (HandlerInfo == NULL) {

+    *InfoPointer = NULL;

+    return EFI_OUT_OF_RESOURCES;

+  }

 

   //

   // First check whether the handler information structure is initialized.

@@ -129,6 +133,7 @@ ExtractGuidedSectionGetGuidList (
   //

   // Get GuidTable and Table Number

   //

+  ASSERT (HandlerInfo != NULL);

   *ExtractHandlerGuidTable = HandlerInfo->ExtractHandlerGuidTable;

   return HandlerInfo->NumberOfExtractHandler;

 }

@@ -187,6 +192,7 @@ ExtractGuidedSectionRegisterHandlers (
   //

   // Search the match registered GetInfo handler for the input guided section.

   //

+  ASSERT (HandlerInfo != NULL);

   for (Index = 0; Index < HandlerInfo->NumberOfExtractHandler; Index ++) {

     if (CompareGuid (HandlerInfo->ExtractHandlerGuidTable + Index, SectionGuid)) {

       //

@@ -288,6 +294,7 @@ ExtractGuidedSectionGetInfo (
   //

   // Search the match registered GetInfo handler for the input guided section.

   //

+  ASSERT (HandlerInfo != NULL);

   for (Index = 0; Index < HandlerInfo->NumberOfExtractHandler; Index ++) {

     if (CompareGuid (HandlerInfo->ExtractHandlerGuidTable + Index, SectionDefinitionGuid)) {

       //

@@ -381,6 +388,7 @@ ExtractGuidedSectionDecode (
   //

   // Search the match registered Extract handler for the input guided section.

   //

+  ASSERT (HandlerInfo != NULL);

   for (Index = 0; Index < HandlerInfo->NumberOfExtractHandler; Index ++) {

     if (CompareGuid (HandlerInfo->ExtractHandlerGuidTable + Index, SectionDefinitionGuid)) {

       //