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Check for an valid mdl pointer before calling IoFreeMdl in IoReadWriteCompletion.

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svn path=/trunk/; revision=14493
This commit is contained in:
Hartmut Birr 2005-04-04 23:11:19 +00:00
parent 1844746db4
commit f4a430511e
1 changed files with 5 additions and 2 deletions
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7
reactos/ntoskrnl/io/cleanup.c
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@ -1,4 +1,4 @@
/* $Id:$ /* $Id$
* *
* COPYRIGHT: See COPYING in the top level directory * COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel * PROJECT: ReactOS kernel
@ -109,7 +109,10 @@ VOID IoReadWriteCompletion(PDEVICE_OBJECT DeviceObject,
if (DeviceObject->Flags & DO_DIRECT_IO) if (DeviceObject->Flags & DO_DIRECT_IO)
{ {
IoFreeMdl(Irp->MdlAddress); if (Irp->MdlAddress)
{
IoFreeMdl(Irp->MdlAddress);
}
} }
} }