[pschweitzer] 71155: [NTFS] Don't leak memory in case of failures in NtfsReadDisk(). Based on a patch by Trevor Thompson. CORE-10998

Author: pschweitzer
Date: Wed Apr 13 19:52:42 2016
New Revision: 71155

URL: http://svn.reactos.org/svn/reactos?rev=71155&view=rev
Log:
[NTFS]
Don't leak memory in case of failures in NtfsReadDisk().

Based on a patch by Trevor Thompson.

CORE-10998

Modified:
    trunk/reactos/drivers/filesystems/ntfs/blockdev.c

Modified: trunk/reactos/drivers/filesystems/ntfs/blockdev.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/ntfs/b…
==============================================================================
--- trunk/reactos/drivers/filesystems/ntfs/blockdev.c	[iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/ntfs/blockdev.c	[iso-8859-1] Wed Apr 13 19:52:42
2016
@@ -87,6 +87,12 @@
     if (Irp == NULL)
     {
         DPRINT("IoBuildSynchronousFsdRequest failed\n");
+
+        if (AllocatedBuffer)
+        {
+            ExFreePoolWithTag(ReadBuffer, TAG_NTFS);
+        }
+
         return STATUS_INSUFFICIENT_RESOURCES;
     }
 
@@ -108,9 +114,13 @@
         Status = IoStatus.Status;
     }
 
-    if (NT_SUCCESS(Status) && AllocatedBuffer)
-    {
-        RtlCopyMemory(Buffer, ReadBuffer + (StartingOffset - RealReadOffset), Length);
+    if (AllocatedBuffer)
+    {
+        if (NT_SUCCESS(Status))
+        {
+            RtlCopyMemory(Buffer, ReadBuffer + (StartingOffset - RealReadOffset),
Length);
+        }
+
         ExFreePoolWithTag(ReadBuffer, TAG_NTFS);
     }