Issue : When user access "Boot Maintenance Manager Menu/Secure Boot
Configuration Menu" with PcdNullPointerDetectionPropertyMask|0x03 and
PcdHeapGuardPageType|0x7FFF protection policy set,
we get X64 Exception Type - 0E(#PF - Page-Fault)
Root cause : When user access "Boot Maintenance Manager Menu/Secure Boot
Configuration Menu", BIOS calls FindQuestionDefaultSetting function and
send EFI VarStore header pointer to AuthFindVariableData function.
When header pointer is NULL, it send NULL pointer to AuthFindVariableData
function and causes the page fault.
Fix : Database.c: In function FindQuestionDefaultSetting, added
NULL pointers check, so that when EFI VarStore header argument is passed
to AuthFindVariableData function, NULL pointer access will not happen.
Test: Cross verified while accessing the "Boot Maintenance Manager Menu/
Secure Boot Configuration Menu" page.
Signed-off-by: DeepakX Singh <deepakx.singh@intel.com>
c87ea47519