Changeset 76054 in vbox for trunk/src/VBox/HostDrivers/Support/win

Timestamp:

Dec 7, 2018 11:47:53 AM (6 years ago)

Author:

vboxsync

Message:

SUPDrv-win.cpp: Figure out the correct pool type before we call ExAllocatePoolWithTag in DriverEntry (bugcheck 0xc2, 0x2000_0,).

File:

• trunk/src/VBox/HostDrivers/Support/win/SUPDrv-win.cpp (modified) (5 diffs)

trunk/src/VBox/HostDrivers/Support/win/SUPDrv-win.cpp

@@ -86 +86 @@
 /** Enables the fast I/O control code path. */
 #define VBOXDRV_WITH_FAST_IO
+
+/* Missing if we're compiling against older WDKs. */
+#ifndef NonPagedPoolNx
+# define NonPagedPoolNx     ((POOL_TYPE)512)
+#endif
 
 
@@ -321 +326 @@
 *   Global Variables                                                                                                             *
 *********************************************************************************************************************************/
+/** The non-paged pool type to use, NonPagedPool or NonPagedPoolNx. */
+static POOL_TYPE      g_enmNonPagedPoolType = NonPagedPool;
 /** Pointer to the system device instance. */
 static PDEVICE_OBJECT g_pDevObjSys = NULL;
@@ -589 +596 @@
 
     /*
+     * Figure out if we can use NonPagedPoolNx or not.
+     */
+    ULONG ulMajorVersion, ulMinorVersion, ulBuildNumber;
+    PsGetVersion(&ulMajorVersion, &ulMinorVersion, &ulBuildNumber, NULL);
+    if (ulMajorVersion > 6 || (ulMajorVersion == 6 && ulMinorVersion >= 2)) /* >= 6.2 (W8)*/
+        g_enmNonPagedPoolType = NonPagedPoolNx;
+
+    /*
      * Query options first so any overflows on unpatched machines will do less
      * harm (see MS11-011 / 2393802 / 2011-03-18).
@@ -596 +611 @@
      */
     NTSTATUS rcNt;
-    PWSTR pwszCopy = (PWSTR)ExAllocatePoolWithTag(NonPagedPool, pRegPath->Length + sizeof(WCHAR), 'VBox');
+    PWSTR pwszCopy = (PWSTR)ExAllocatePoolWithTag(g_enmNonPagedPoolType, pRegPath->Length + sizeof(WCHAR), 'VBox');
     if (pwszCopy)
     {
@@ -1192 +1207 @@
                 {
                     /* Allocate a buffer and copy all the input into it. */
-                    PSUPREQHDR pHdr = (PSUPREQHDR)ExAllocatePoolWithTag(NonPagedPool, cbBuf, 'VBox');
+                    PSUPREQHDR pHdr = (PSUPREQHDR)ExAllocatePoolWithTag(g_enmNonPagedPoolType, cbBuf, 'VBox');
                     if (pHdr)
                     {