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[0.4.9][NTOS] Fix a regression in the PE loader CORE-11717

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which caused images to be loaded up to MmHighestUserAddress,
thus overwriting the shared user page.

This is now fixed by using MM_HIGHEST_VAD_ADDRESS as the margin instead.
This commit allows again to load WIN32K.sys of Win2K3SP2
which regressed by SVN 67793 == git
3565260212

fix cherry picked from commit 0.4.14-dev-143-g
56da95671c
This commit is contained in:
Timo Kreuzer 2019-10-21 00:36:14 +02:00 committed by Joachim Henze
parent 995d69c8d7
commit ca8fbad361
1 changed files with 2 additions and 2 deletions
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4
ntoskrnl/mm/section.c
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@ -4556,11 +4556,11 @@ MmMapViewOfSection(IN PVOID SectionObject,
ImageSectionObject->ImageInformation.ImageFileSize = (ULONG)ImageSize;
/* Check for an illegal base address */
if (((ImageBase + ImageSize) > (ULONG_PTR)MmHighestUserAddress) ||
if (((ImageBase + ImageSize) > (ULONG_PTR)MM_HIGHEST_VAD_ADDRESS) ||
((ImageBase + ImageSize) < ImageSize))
{
ASSERT(*BaseAddress == NULL);
ImageBase = ALIGN_DOWN_BY((ULONG_PTR)MmHighestUserAddress - ImageSize,
ImageBase = ALIGN_DOWN_BY((ULONG_PTR)MM_HIGHEST_VAD_ADDRESS - ImageSize,
MM_VIRTMEM_GRANULARITY);
NotAtBase = TRUE;
}