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[NTOS:MM] Properly handle the 1-offset of paging files

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This commit is contained in:
Jérôme Gardou 2020-12-07 10:22:28 +01:00
parent a46ee7dafe
commit 857dd4ae36
1 changed files with 4 additions and 1 deletions
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5
ntoskrnl/mm/pagefile.c
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@ -189,7 +189,7 @@ NTSTATUS
NTAPI NTAPI
MmReadFromSwapPage(SWAPENTRY SwapEntry, PFN_NUMBER Page) MmReadFromSwapPage(SWAPENTRY SwapEntry, PFN_NUMBER Page)
{ {
return MiReadPageFile(Page, FILE_FROM_ENTRY(SwapEntry), OFFSET_FROM_ENTRY(SwapEntry) - 1); return MiReadPageFile(Page, FILE_FROM_ENTRY(SwapEntry), OFFSET_FROM_ENTRY(SwapEntry));
} }
NTSTATUS NTSTATUS
@ -215,6 +215,9 @@ MiReadPageFile(
return(STATUS_UNSUCCESSFUL); return(STATUS_UNSUCCESSFUL);
} }
/* Normalize offset. */
PageFileOffset--;
ASSERT(PageFileIndex < MAX_PAGING_FILES); ASSERT(PageFileIndex < MAX_PAGING_FILES);
PagingFile = MmPagingFile[PageFileIndex]; PagingFile = MmPagingFile[PageFileIndex];