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[NTOS/MM] Properly handle page faults in regions marked with

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PAGE_NOACCESS or PAGE_GUARD

ROSTESTS-110
This commit is contained in:
Jérôme Gardou 2018-11-02 18:23:16 +01:00 committed by Jérôme Gardou
parent 47ac7a2b28
commit df25e4e791
1 changed files with 23 additions and 0 deletions
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23
ntoskrnl/mm/section.c
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@ -1410,6 +1410,29 @@ MmNotPresentFaultSectionView(PMMSUPPORT AddressSpace,
&MemoryArea->Data.SectionData.RegionListHead,
Address, NULL);
ASSERT(Region != NULL);
/* Check for a NOACCESS mapping */
if (Region->Protect & PAGE_NOACCESS)
{
return STATUS_ACCESS_VIOLATION;
}
if (Region->Protect & PAGE_GUARD)
{
/* Remove it */
Status = MmAlterRegion(AddressSpace, (PVOID)MA_GetStartingAddress(MemoryArea),
&MemoryArea->Data.SectionData.RegionListHead,
Address, PAGE_SIZE, Region->Type, Region->Protect & ~PAGE_GUARD,
MmAlterViewAttributes);
if (!NT_SUCCESS(Status))
{
DPRINT1("Removing PAGE_GUARD protection failed : 0x%08x.\n", Status);
}
return STATUS_GUARD_PAGE_VIOLATION;
}
/*
* Lock the segment
*/