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[NTOSKRNL]

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Do not use image base addresses above MmHighestUserAddress in MmMapViewOfSection, because it would first succeed when checking for conflicting memory areas, and thus not try to find a better address, but later fail in MmMapViewOfSegment, which cannot create a memory area in system space (only possible with MmKernelAddressSpace / PsIdleProcess).
See issue #5680 for more details.

svn path=/trunk/; revision=54096
This commit is contained in:
Timo Kreuzer 2011-10-12 19:26:45 +00:00
parent 2e7ccdc07c
commit a38e883762
1 changed files with 9 additions and 3 deletions
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6
reactos/ntoskrnl/mm/section.c
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@ -4626,6 +4626,12 @@ MmMapViewOfSection(IN PVOID SectionObject,
ImageSectionObject->ImageSize = (ULONG)ImageSize; ImageSectionObject->ImageSize = (ULONG)ImageSize;
/* Check for an illegal base address */
if ((ImageBase + ImageSize) > (ULONG_PTR)MmHighestUserAddress)
{
ImageBase = PAGE_ROUND_DOWN((ULONG_PTR)MmHighestUserAddress - ImageSize);
}
/* Check there is enough space to map the section at that point. */ /* Check there is enough space to map the section at that point. */
if (MmLocateMemoryAreaByRegion(AddressSpace, (PVOID)ImageBase, if (MmLocateMemoryAreaByRegion(AddressSpace, (PVOID)ImageBase,
PAGE_ROUND_UP(ImageSize)) != NULL) PAGE_ROUND_UP(ImageSize)) != NULL)