}
IrpSp->Parameters.DeviceIoControl.Type3InputBuffer =
- MmMapLockedPages( Irp->MdlAddress, KernelMode );
+ MmGetSystemAddressForMdlSafe( Irp->MdlAddress, NormalPagePriority );
if( !IrpSp->Parameters.DeviceIoControl.Type3InputBuffer ) {
IoFreeMdl( Irp->MdlAddress );
}
VOID UnlockRequest( PIRP Irp, PIO_STACK_LOCATION IrpSp ) {
- if( !IrpSp->Parameters.DeviceIoControl.Type3InputBuffer || !Irp->MdlAddress ) return;
+ PVOID Buffer = MmGetSystemAddressForMdlSafe( Irp->MdlAddress, NormalPagePriority );
+ if( IrpSp->Parameters.DeviceIoControl.Type3InputBuffer == Buffer || Buffer == NULL ) {
+ MmUnmapLockedPages( IrpSp->Parameters.DeviceIoControl.Type3InputBuffer, Irp->MdlAddress );
+ MmUnlockPages( Irp->MdlAddress );
+ IoFreeMdl( Irp->MdlAddress );
+ }
- MmUnmapLockedPages( IrpSp->Parameters.DeviceIoControl.Type3InputBuffer,
- Irp->MdlAddress );
- MmUnlockPages( Irp->MdlAddress );
- IoFreeMdl( Irp->MdlAddress );
Irp->MdlAddress = NULL;
}
UINT Size = sizeof(AFD_WSABUF) * (Count + Lock);
PAFD_WSABUF NewBuf = ExAllocatePool( PagedPool, Size * 2 );
PMDL NewMdl;
+ BOOLEAN LockFailed = FALSE;
AFD_DbgPrint(MID_TRACE,("Called(%08x)\n", NewBuf));
if( MapBuf[i].Mdl ) {
AFD_DbgPrint(MID_TRACE,("Probe and lock pages\n"));
- MmProbeAndLockPages( MapBuf[i].Mdl, KernelMode,
- Write ? IoModifyAccess : IoReadAccess );
+ _SEH_TRY {
+ MmProbeAndLockPages( MapBuf[i].Mdl, KernelMode,
+ Write ? IoModifyAccess : IoReadAccess );
+ } _SEH_HANDLE {
+ LockFailed = TRUE;
+ } _SEH_END;
AFD_DbgPrint(MID_TRACE,("MmProbeAndLock finished\n"));
+
+ if( LockFailed ) {
+ IoFreeMdl( MapBuf[i].Mdl );
+ MapBuf[i].Mdl = NULL;
+ LockFailed = FALSE;
+ }
}
}
}