[ros-diffs] [tfaber] 52947: [KMTESTS] - probe user address in user mode - don't free the result buffer before the driver unlocks it. Fixes assertion in ROS for large buffers

Author: tfaber
Date: Thu Jul 28 09:00:56 2011
New Revision: 52947

URL: http://svn.reactos.org/svn/reactos?rev=52947&view=rev
Log:
[KMTESTS]
- probe user address in user mode
- don't free the result buffer before the driver unlocks it. Fixes assertion in ROS
for large buffers

Modified:
    branches/GSoC_2011/KMTestSuite/kmtests/include/kmt_test.h
    branches/GSoC_2011/KMTestSuite/kmtests/kmtest/kmtest.c
    branches/GSoC_2011/KMTestSuite/kmtests/kmtest_drv/kmtest_drv.c

Modified: branches/GSoC_2011/KMTestSuite/kmtests/include/kmt_test.h
URL:
http://svn.reactos.org/svn/reactos/branches/GSoC_2011/KMTestSuite/kmtests/i…
==============================================================================
--- branches/GSoC_2011/KMTestSuite/kmtests/include/kmt_test.h [iso-8859-1] (original)
+++ branches/GSoC_2011/KMTestSuite/kmtests/include/kmt_test.h [iso-8859-1] Thu Jul 28
09:00:56 2011
@@ -173,15 +173,17 @@
 
 INT __cdecl KmtVSNPrintF(PSTR Buffer, SIZE_T BufferMaxLength, PCSTR Format, va_list
Arguments) KMT_FORMAT(ms_printf, 3, 0);
 #elif defined KMT_USER_MODE
-static PKMT_RESULTBUFFER KmtAllocateResultBuffer(SIZE_T LogBufferMaxLength)
-{
-    PKMT_RESULTBUFFER Buffer = HeapAlloc(GetProcessHeap(), 0,
FIELD_OFFSET(KMT_RESULTBUFFER, LogBuffer[LogBufferMaxLength]));
+static PKMT_RESULTBUFFER KmtAllocateResultBuffer(SIZE_T ResultBufferSize)
+{
+    PKMT_RESULTBUFFER Buffer = HeapAlloc(GetProcessHeap(), 0, ResultBufferSize);
+    if (!Buffer)
+        return NULL;
 
     Buffer->Successes = 0;
     Buffer->Failures = 0;
     Buffer->Skipped = 0;
     Buffer->LogBufferLength = 0;
-    Buffer->LogBufferMaxLength = LogBufferMaxLength;
+    Buffer->LogBufferMaxLength = ResultBufferSize - FIELD_OFFSET(KMT_RESULTBUFFER,
LogBuffer);
 
     return Buffer;
 }

Modified: branches/GSoC_2011/KMTestSuite/kmtests/kmtest/kmtest.c
URL:
http://svn.reactos.org/svn/reactos/branches/GSoC_2011/KMTestSuite/kmtests/k…
==============================================================================
--- branches/GSoC_2011/KMTestSuite/kmtests/kmtest/kmtest.c [iso-8859-1] (original)
+++ branches/GSoC_2011/KMTestSuite/kmtests/kmtest/kmtest.c [iso-8859-1] Thu Jul 28
09:00:56 2011
@@ -24,8 +24,7 @@
 #define SERVICE_PATH        L"kmtest_drv.sys"
 #define SERVICE_DESCRIPTION L"ReactOS Kernel-Mode Test Suite Driver"
 
-#define LOGBUFFER_SIZE      16364
-#define RESULTBUFFER_SIZE   FIELD_OFFSET(KMT_RESULTBUFFER, LogBuffer[LOGBUFFER_SIZE])
+#define RESULTBUFFER_SIZE   (1024 * 1024)
 
 typedef enum
 {
@@ -255,9 +254,14 @@
 
     assert(TestName != NULL);
 
-    ResultBuffer = KmtAllocateResultBuffer(LOGBUFFER_SIZE);
-    if (!DeviceIoControl(KmtestHandle, IOCTL_KMTEST_SET_RESULTBUFFER, ResultBuffer,
RESULTBUFFER_SIZE, NULL, 0, &BytesRead, NULL))
-        error_goto(Error, cleanup);
+    if (!ResultBuffer)
+    {
+        ResultBuffer = KmtAllocateResultBuffer(RESULTBUFFER_SIZE);
+        if (!ResultBuffer)
+            error_goto(Error, cleanup);
+        if (!DeviceIoControl(KmtestHandle, IOCTL_KMTEST_SET_RESULTBUFFER, ResultBuffer,
RESULTBUFFER_SIZE, NULL, 0, &BytesRead, NULL))
+            error_goto(Error, cleanup);
+    }
 
     // check test list
     TestFunction = FindTest(TestName);
@@ -274,8 +278,6 @@
 cleanup:
     if (!Error)
         Error = OutputResult(TestName);
-
-    KmtFreeResultBuffer(ResultBuffer);
 
     return Error;
 }
@@ -367,6 +369,9 @@
     if (KmtestHandle)
         CloseHandle(KmtestHandle);
 
+    if (ResultBuffer)
+        KmtFreeResultBuffer(ResultBuffer);
+
     KmtCloseService(&KmtestServiceHandle);
 
     if (Error)

Modified: branches/GSoC_2011/KMTestSuite/kmtests/kmtest_drv/kmtest_drv.c
URL:
http://svn.reactos.org/svn/reactos/branches/GSoC_2011/KMTestSuite/kmtests/k…
==============================================================================
--- branches/GSoC_2011/KMTestSuite/kmtests/kmtest_drv/kmtest_drv.c [iso-8859-1]
(original)
+++ branches/GSoC_2011/KMTestSuite/kmtests/kmtest_drv/kmtest_drv.c [iso-8859-1] Thu Jul 28
09:00:56 2011
@@ -314,9 +314,10 @@
         {
             PKMT_DEVICE_EXTENSION DeviceExtension = DeviceObject->DeviceExtension;
 
-            DPRINT("DriverIoControl. IOCTL_KMTEST_SET_RESULTBUFFER, inlen=%lu,
outlen=%lu\n",
-                     IoStackLocation->Parameters.DeviceIoControl.InputBufferLength,
-                     IoStackLocation->Parameters.DeviceIoControl.OutputBufferLength);
+            DPRINT("DriverIoControl. IOCTL_KMTEST_SET_RESULTBUFFER, buffer=%p,
inlen=%lu, outlen=%lu\n",
+                    IoStackLocation->Parameters.DeviceIoControl.Type3InputBuffer,
+                    IoStackLocation->Parameters.DeviceIoControl.InputBufferLength,
+                    IoStackLocation->Parameters.DeviceIoControl.OutputBufferLength);
 
             if (DeviceExtension->Mdl)
             {
@@ -342,7 +343,7 @@
 
             _SEH2_TRY
             {
-                MmProbeAndLockPages(DeviceExtension->Mdl, KernelMode,
IoModifyAccess);
+                MmProbeAndLockPages(DeviceExtension->Mdl, UserMode, IoModifyAccess);
             }
             _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
             {