Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2024-07-06 20:55:16 +00:00
Code Issues Packages Projects Releases Wiki Activity

[NTOS:IO]

Browse source 
- Fix potential null-pointer dereferencing (we call IopCleanupAfterException in IopDeviceFsIoControl with Irp == NULL)

svn path=/trunk/; revision=72548
This commit is contained in:
Dmitry Chapyshev 2016-09-03 15:49:55 +00:00
parent 6c6813d7f7
commit 212b70142c
1 changed files with 14 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

25
reactos/ntoskrnl/io/iomgr/iofunc.c
View file

@ -22,26 +22,29 @@
VOID
NTAPI
IopCleanupAfterException(IN PFILE_OBJECT FileObject,
IN PIRP Irp,
IN PIRP Irp OPTIONAL,
IN PKEVENT Event OPTIONAL,
IN PKEVENT LocalEvent OPTIONAL)
{
PAGED_CODE();
IOTRACE(IO_API_DEBUG, "IRP: %p. FO: %p \n", Irp, FileObject);
/* Check if we had a buffer */
if (Irp->AssociatedIrp.SystemBuffer)
if (Irp)
{
/* Free it */
ExFreePool(Irp->AssociatedIrp.SystemBuffer);
/* Check if we had a buffer */
if (Irp->AssociatedIrp.SystemBuffer)
{
/* Free it */
ExFreePool(Irp->AssociatedIrp.SystemBuffer);
}
/* Free the mdl */
if (Irp->MdlAddress) IoFreeMdl(Irp->MdlAddress);
/* Free the IRP */
IoFreeIrp(Irp);
}
/* Free the mdl */
if (Irp->MdlAddress) IoFreeMdl(Irp->MdlAddress);
/* Free the IRP */
IoFreeIrp(Irp);
/* Check if we had a file lock */
if (FileObject->Flags & FO_SYNCHRONOUS_IO)
{