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- Added a check for a locked page in MmPageOutPhysicalAddress.

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svn path=/trunk/; revision=6404
This commit is contained in:
Hartmut Birr 2003-10-22 18:26:34 +00:00
parent e80fcc0855
commit 5be42e1107
2 changed files with 5 additions and 4 deletions
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1
reactos/ntoskrnl/include/internal/mm.h
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@ -372,6 +372,7 @@ SWAPENTRY MmGetSavedSwapEntryPage(PHYSICAL_ADDRESS PhysicalAddress);
VOID MmSetCleanPage(struct _EPROCESS* Process, PVOID Address); VOID MmSetCleanPage(struct _EPROCESS* Process, PVOID Address);
VOID MmLockPage(PHYSICAL_ADDRESS PhysicalPage); VOID MmLockPage(PHYSICAL_ADDRESS PhysicalPage);
VOID MmUnlockPage(PHYSICAL_ADDRESS PhysicalPage); VOID MmUnlockPage(PHYSICAL_ADDRESS PhysicalPage);
ULONG MmGetLockCountPage(PHYSICAL_ADDRESS PhysicalPage);
NTSTATUS MmSafeCopyFromUser(PVOID Dest, const VOID *Src, ULONG Count); NTSTATUS MmSafeCopyFromUser(PVOID Dest, const VOID *Src, ULONG Count);
NTSTATUS MmSafeCopyToUser(PVOID Dest, const VOID *Src, ULONG Count); NTSTATUS MmSafeCopyToUser(PVOID Dest, const VOID *Src, ULONG Count);

8
reactos/ntoskrnl/mm/rmap.c
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@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software * along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/ */
/* $Id: rmap.c,v 1.24 2003/10/12 17:05:48 hbirr Exp $ /* $Id: rmap.c,v 1.25 2003/10/22 18:26:34 hbirr Exp $
* *
* COPYRIGHT: See COPYING in the top directory * COPYRIGHT: See COPYING in the top directory
* PROJECT: ReactOS kernel * PROJECT: ReactOS kernel
@ -229,7 +229,7 @@ MmPageOutPhysicalAddress(PHYSICAL_ADDRESS PhysicalAddress)
ExAcquireFastMutex(&RmapListLock); ExAcquireFastMutex(&RmapListLock);
entry = MmGetRmapListHeadPage(PhysicalAddress); entry = MmGetRmapListHeadPage(PhysicalAddress);
if (entry == NULL) if (entry == NULL || MmGetLockCountPage(PhysicalAddress) != 0)
{ {
ExReleaseFastMutex(&RmapListLock); ExReleaseFastMutex(&RmapListLock);
return(STATUS_UNSUCCESSFUL); return(STATUS_UNSUCCESSFUL);
@ -437,8 +437,8 @@ MmInsertRmap(PHYSICAL_ADDRESS PhysicalAddress, PEPROCESS Process,
{ {
DPRINT1("Insert rmap (%d, 0x%.8X) 0x%.8X which doesn't match physical " DPRINT1("Insert rmap (%d, 0x%.8X) 0x%.8X which doesn't match physical "
"address 0x%.8X\n", Process->UniqueProcessId, Address, "address 0x%.8X\n", Process->UniqueProcessId, Address,
MmGetPhysicalAddressForProcess(Process, Address), MmGetPhysicalAddressForProcess(Process, Address).u.LowPart,
PhysicalAddress) PhysicalAddress.u.LowPart)
KEBUGCHECK(0); KEBUGCHECK(0);
} }