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[NTOSKRNL]

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Don't call MmBuildMdlForNonPagedPool in CcWriteVirtualAddress():
- BaseAddress comes from PagedPood
- Windows returns a locked MDL from paged pool
- See tests from r75833 that are getting fixed with that revision

This fixes assertions failures on BtrFS write.

CORE-13763
CORE-13769

svn path=/trunk/; revision=75834
This commit is contained in:
Pierre Schweitzer 2017-09-13 16:13:21 +00:00
parent d7718b4d51
commit 662241cc75
1 changed files with 23 additions and 7 deletions
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30
reactos/ntoskrnl/cc/copy.c
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@ -147,14 +147,30 @@ CcWriteVirtualAddress (
{
return STATUS_INSUFFICIENT_RESOURCES;
}
MmBuildMdlForNonPagedPool(Mdl);
Mdl->MdlFlags |= MDL_IO_PAGE_READ;
KeInitializeEvent(&Event, NotificationEvent, FALSE);
Status = IoSynchronousPageWrite(Vacb->SharedCacheMap->FileObject, Mdl, &Vacb->FileOffset, &Event, &IoStatus);
if (Status == STATUS_PENDING)
Status = STATUS_SUCCESS;
_SEH2_TRY
{
KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL);
Status = IoStatus.Status;
MmProbeAndLockPages(Mdl, KernelMode, IoReadAccess);
}
_SEH2_EXCEPT (EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
KeBugCheck(CACHE_MANAGER);
} _SEH2_END;
if (NT_SUCCESS(Status))
{
Mdl->MdlFlags |= MDL_IO_PAGE_READ;
KeInitializeEvent(&Event, NotificationEvent, FALSE);
Status = IoSynchronousPageWrite(Vacb->SharedCacheMap->FileObject, Mdl, &Vacb->FileOffset, &Event, &IoStatus);
if (Status == STATUS_PENDING)
{
KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL);
Status = IoStatus.Status;
}
MmUnlockPages(Mdl);
}
IoFreeMdl(Mdl);
if (!NT_SUCCESS(Status) && (Status != STATUS_END_OF_FILE))