Fix null reference in MemoryGroup when Ring0 is disabled. (#1796)

xnaught · PhyxionNL · web-flow · commit 6267899eb886 · 2025-07-21T16:55:20.000+02:00
* Create RAMSPDToolkitDriver with null when Ring0 is absent

* Update MemoryGroup.cs

---------

Co-authored-by: PhyxionNL &lt;7643972+PhyxionNL@users.noreply.github.com&gt;
diff --git a/LibreHardwareMonitorLib/Hardware/Memory/MemoryGroup.cs b/LibreHardwareMonitorLib/Hardware/Memory/MemoryGroup.cs
@@ -33,10 +33,16 @@ static MemoryGroup()
     {
         if (Ring0.IsOpen)
         {
-            //Assign implementation of IDriver
+            // Assign implementation of IDriver.
             DriverManager.Driver = new RAMSPDToolkitDriver(Ring0.KernelDriver);
             SMBusManager.UseWMI = false;
         }
+        else
+        {
+            // Still need to set Driver if Ring0 is absent.
+            DriverManager.Driver = new RAMSPDToolkitDriver(null);
+            SMBusManager.UseWMI = false;
+        }
     }
 
     public MemoryGroup(ISettings settings)

Original file line number	Diff line number	Diff line change
`@@ -33,10 +33,16 @@ static MemoryGroup()`
`33`	`33`	`{`
`34`	`34`	`if (Ring0.IsOpen)`
`35`	`35`	`{`
`36`		`- //Assign implementation of IDriver`
	`36`	`+ // Assign implementation of IDriver.`
`37`	`37`	`DriverManager.Driver = new RAMSPDToolkitDriver(Ring0.KernelDriver);`
`38`	`38`	`SMBusManager.UseWMI = false;`
`39`	`39`	`}`
	`40`	`+ else`
	`41`	`+ {`
	`42`	`+ // Still need to set Driver if Ring0 is absent.`
	`43`	`+ DriverManager.Driver = new RAMSPDToolkitDriver(null);`
	`44`	`+ SMBusManager.UseWMI = false;`
	`45`	`+ }`
`40`	`46`	`}`
`41`	`47`
`42`	`48`	`public MemoryGroup(ISettings settings)`