[tfaber] 73892: [USBSTOR] - Fix error paths around SCSI_REQUEST_BLOCK::DataBuffer. Spotted by curiousone. CORE-12816 #resolve

Author: tfaber
Date: Thu Feb 23 09:28:20 2017
New Revision: 73892

URL: http://svn.reactos.org/svn/reactos?rev=73892&view=rev
Log:
[USBSTOR]
- Fix error paths around SCSI_REQUEST_BLOCK::DataBuffer. Spotted by curiousone.
CORE-12816 #resolve

Modified:
    trunk/reactos/drivers/usb/usbstor/pdo.c

Modified: trunk/reactos/drivers/usb/usbstor/pdo.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/usb/usbstor/pdo.c?r...
==============================================================================
--- trunk/reactos/drivers/usb/usbstor/pdo.c	[iso-8859-1] (original)
+++ trunk/reactos/drivers/usb/usbstor/pdo.c	[iso-8859-1] Thu Feb 23 09:28:20 2017
@@ -1041,7 +1041,7 @@
     Request->DataBuffer = ExAllocatePoolWithTag(NonPagedPool,
                                                 DataTransferLength,
                                                 USB_STOR_TAG);
-    if (!Request)
+    if (!Request->DataBuffer)
     {
         //
         // no memory
@@ -1061,6 +1061,7 @@
         // no memory
         //
         IoFreeIrp(Irp);
+        ExFreePoolWithTag(Request->DataBuffer, USB_STOR_TAG);
         ExFreePoolWithTag(Request, USB_STOR_TAG);
         return STATUS_INSUFFICIENT_RESOURCES;
     }
@@ -1173,6 +1174,7 @@
     //
     // free resources
     //
+    ExFreePoolWithTag(Request->DataBuffer, USB_STOR_TAG);
     ExFreePoolWithTag(Request, USB_STOR_TAG);
     IoFreeIrp(Irp);
     return Status;