GP-2177: schema fix for missing registers

GP-2177(SQRB): fire threadCreated
GP-2177_SQRB: spare the VM on E_NOINTERFACE
GP-2177_SQRB: check id plus pid/tid
GP-2177_SQRB: init for dbgmodel RegisterBanks plus bandaid for recorder
GP-2177_SQRB: filter nulls from traceToTarget
GP-2177: extraneous cleanup
GP-2177: clear bpts on process death
GP-2968: fixes from review
GP-2177: not directly related, but...
GP-2177: CACHE needs to be cleared and must follow actual native delete
GP-2177: first pass at bpt errors

Ghidra/Debug/Debugger-agent-dbgeng/src/main/java/agent/dbgeng/dbgeng/DebugBreakpoint.java

@@ -132,4 +132,6 @@ public interface DebugBreakpoint {
 	void setDataParameters(int size, BitmaskSet<BreakAccess> access);
 
 	void setDataParameters(int size, BreakAccess... access);
+
+	void dispose();
 }

Ghidra/Debug/Debugger-agent-dbgeng/src/main/java/agent/dbgeng/impl/dbgeng/breakpoint/DebugBreakpointImpl1.java

@@ -51,7 +51,14 @@ public class DebugBreakpointImpl1 implements DebugBreakpointInternal {
 	@Override
 	public void remove() {
 		control.removeBreakpoint(jnaBreakpoint);
+		// If we do this here, dispose will fail
+		//jnaBreakpoint = null;
+	}
+
+	@Override
+	public void dispose() {
 		// Prevent accidental access. Will be released during GC. NPE is better than segfault.
+		CACHE.remove(jnaBreakpoint.getPointer());
 		jnaBreakpoint = null;
 	}
 
@@ -184,4 +191,5 @@ public class DebugBreakpointImpl1 implements DebugBreakpointInternal {
 	public void setDataParameters(int size, BreakAccess... access) {
 		setDataParameters(size, BitmaskSet.of(access));
 	}
+
 }

Ghidra/Debug/Debugger-agent-dbgeng/src/main/java/agent/dbgeng/impl/dbgeng/breakpoint/DebugBreakpointImpl2.java

@@ -24,14 +24,20 @@ import com.sun.jna.platform.win32.COM.COMUtils;
 import agent.dbgeng.jna.dbgeng.breakpoint.IDebugBreakpoint2;
 
 public class DebugBreakpointImpl2 extends DebugBreakpointImpl1 {
-	@SuppressWarnings("unused")
+
-	private final IDebugBreakpoint2 jnaBreakpoint;
+	private IDebugBreakpoint2 jnaBreakpoint;
 
 	public DebugBreakpointImpl2(IDebugBreakpoint2 jnaBreakpoint) {
 		super(jnaBreakpoint);
 		this.jnaBreakpoint = jnaBreakpoint;
 	}
 
+	@Override
+	public void dispose() {
+		super.dispose();
+		jnaBreakpoint = null;
+	}
+
 	@Override
 	public String getOffsetExpression() {
 		ULONGByReference pulExpressionSize = new ULONGByReference();

Ghidra/Debug/Debugger-agent-dbgeng/src/main/java/agent/dbgeng/impl/dbgeng/breakpoint/DebugBreakpointImpl3.java

@@ -19,10 +19,16 @@ import agent.dbgeng.jna.dbgeng.breakpoint.IDebugBreakpoint3;
 
 public class DebugBreakpointImpl3 extends DebugBreakpointImpl2 {
 	@SuppressWarnings("unused")
-	private final IDebugBreakpoint3 jnaBreakpoint;
+	private IDebugBreakpoint3 jnaBreakpoint;
 
 	public DebugBreakpointImpl3(IDebugBreakpoint3 jnaBreakpoint) {
 		super(jnaBreakpoint);
 		this.jnaBreakpoint = jnaBreakpoint;
 	}
+
+	@Override
+	public void dispose() {
+		super.dispose();
+		jnaBreakpoint = null;
+	}
 }

Ghidra/Debug/Debugger-agent-dbgeng/src/main/java/agent/dbgeng/impl/dbgeng/dataspaces/DebugDataSpacesImpl2.java

@@ -44,6 +44,9 @@ public class DebugDataSpacesImpl2 extends DebugDataSpacesImpl1 {
 		if (hr.equals(COMUtilsExtra.E_NOTIMPLEMENTED)) {
 			return null;
 		}
+		if (hr.equals(COMUtilsExtra.E_NOINTERFACE)) {
+			return null;
+		}
 		COMUtils.checkRC(hr);
 
 		return new DebugMemoryBasicInformation(pInfo.BaseAddress.longValue(),

Ghidra/Debug/Debugger-agent-dbgeng/src/main/java/agent/dbgeng/jna/dbgeng/breakpoint/IDebugBreakpoint.java

@@ -19,12 +19,11 @@ import com.sun.jna.Pointer;
 import com.sun.jna.platform.win32.Guid.IID;
 import com.sun.jna.platform.win32.WinDef.*;
 import com.sun.jna.platform.win32.WinNT.HRESULT;
+import com.sun.jna.platform.win32.COM.IUnknown;
 
 import agent.dbgeng.jna.dbgeng.DbgEngNative.DEBUG_BREAKPOINT_PARAMETERS;
 import agent.dbgeng.jna.dbgeng.UnknownWithUtils.VTableIndex;
 
-import com.sun.jna.platform.win32.COM.IUnknown;
-
 public interface IDebugBreakpoint extends IUnknown {
 	final IID IID_IDEBUG_BREAKPOINT = new IID("5bd9d474-5975-423a-b88b-65a8e7110e65");
 
@@ -101,4 +100,6 @@ public interface IDebugBreakpoint extends IUnknown {
 	HRESULT SetOffsetExpression(String Expression);
 
 	HRESULT GetParameters(DEBUG_BREAKPOINT_PARAMETERS.ByReference Params);
+
+	Pointer getPointer();
 }

Ghidra/Debug/Debugger-agent-dbgeng/src/main/java/agent/dbgeng/manager/breakpoint/DbgBreakpointInfo.java

@@ -299,7 +299,12 @@ public class DbgBreakpointInfo {
 		}
 	}
 
-	/*public long getAddressAsLong() {
+	public void remove() {
-		return locations.get(0).addrAsLong();
+		bpt.remove();
-	}*/ // getOffset instead
+	}
+
+	public void dispose() {
+		bpt.dispose();
+	}
+
 }

Ghidra/Debug/Debugger-agent-dbgeng/src/main/java/agent/dbgeng/manager/cmd/DbgDeleteBreakpointsCommand.java

@@ -17,7 +17,6 @@ package agent.dbgeng.manager.cmd;
 
 import agent.dbgeng.dbgeng.DebugBreakpoint;
 import agent.dbgeng.dbgeng.DebugControl;
-import agent.dbgeng.manager.DbgCause;
 import agent.dbgeng.manager.impl.DbgManagerImpl;
 
 /**
@@ -36,9 +35,10 @@ public class DbgDeleteBreakpointsCommand extends AbstractDbgCommand<Void> {
 	public void invoke() {
 		DebugControl control = manager.getControl();
 		for (long id : numbers) {
-			manager.doBreakpointDeleted(id, DbgCause.Causes.UNCLAIMED);
 			DebugBreakpoint bp = control.getBreakpointById((int) id);
-			bp.remove();
+			if (bp != null) {
+				bp.remove();
+			}
 		}
 	}
 }

Ghidra/Debug/Debugger-agent-dbgeng/src/main/java/agent/dbgeng/manager/impl/DbgManagerImpl.java

@@ -144,15 +144,19 @@ public class DbgManagerImpl implements DbgManager {
 	public DbgThreadImpl getThreadComputeIfAbsent(DebugThreadId id, DbgProcessImpl process,
 			int tid, boolean fire) {
 		synchronized (threads) {
-			if (!threads.containsKey(id)) {
+			if (threads.containsKey(id)) {
-				DbgThreadImpl thread = new DbgThreadImpl(this, process, id, tid);
+				DbgThreadImpl existingThread = threads.get(id);
-				thread.add();
+				if (existingThread.getTid() == tid) {
-				if (fire) {
+					return existingThread;
-					Causes cause = DbgCause.Causes.UNCLAIMED;
-					getEventListeners().fire.threadCreated(thread, cause);
-					getEventListeners().fire.threadSelected(thread, null, cause);
 				}
 			}
+			DbgThreadImpl thread = new DbgThreadImpl(this, process, id, tid);
+			thread.add();
+			if (fire) {
+				Causes cause = DbgCause.Causes.UNCLAIMED;
+				getEventListeners().fire.threadCreated(thread, cause);
+				getEventListeners().fire.threadSelected(thread, null, cause);
+			}
 			return threads.get(id);
 		}
 	}
@@ -218,13 +222,17 @@ public class DbgManagerImpl implements DbgManager {
 
 	public DbgProcessImpl getProcessComputeIfAbsent(DebugProcessId id, int pid, boolean fire) {
 		synchronized (processes) {
-			if (!processes.containsKey(id)) {
+			if (processes.containsKey(id)) {
-				DbgProcessImpl process = new DbgProcessImpl(this, id, pid);
+				DbgProcessImpl existingProc = processes.get(id);
-				process.add();
+				if (existingProc.getPid() == pid) {
-				if (fire) {
+					return existingProc;
-					getEventListeners().fire.processAdded(process, DbgCause.Causes.UNCLAIMED);
 				}
 			}
+			DbgProcessImpl process = new DbgProcessImpl(this, id, pid);
+			process.add();
+			if (fire) {
+				getEventListeners().fire.processAdded(process, DbgCause.Causes.UNCLAIMED);
+			}
 			return processes.get(id);
 		}
 	}
@@ -730,7 +738,7 @@ public class DbgManagerImpl implements DbgManager {
 		int tid = so.getCurrentThreadSystemId();
 		DbgThreadImpl thread = getThreadComputeIfAbsent(eventId, process, tid, true);
 		getEventListeners().fire.eventSelected(evt, evt.getCause());
-		//getEventListeners().fire.threadCreated(thread, DbgCause.Causes.UNCLAIMED);
+		getEventListeners().fire.threadCreated(thread, DbgCause.Causes.UNCLAIMED);
 		getEventListeners().fire.threadSelected(thread, null, evt.getCause());
 
 		String key = Integer.toHexString(eventId.id);
@@ -1105,6 +1113,11 @@ public class DbgManagerImpl implements DbgManager {
 			long bptId = evt.getId();
 			if (bptId == DbgEngUtil.DEBUG_ANY_ID.longValue()) {
 				changeBreakpoints();
+				for (DbgBreakpointInfo bptInfo : breakpoints.values()) {
+					if (bptInfo.getProc().equals(currentProcess)) {
+						doBreakpointDeleted(bptInfo.getNumber(), evt.getCause());
+					}
+				}
 			}
 			else {
 				DebugBreakpoint bpt = getControl().getBreakpointById((int) bptId);
@@ -1112,17 +1125,27 @@ public class DbgManagerImpl implements DbgManager {
 					doBreakpointDeleted(bptId, evt.getCause());
 					return;
 				}
-				DbgBreakpointInfo knownBreakpoint = getKnownBreakpoint(bptId);
+				DbgBreakpointInfo knownBreakpoint = breakpoints.get(bptId);
 				if (knownBreakpoint == null) {
 					breakpointInfo = new DbgBreakpointInfo(bpt, getCurrentProcess());
 					if (breakpointInfo.getOffset() != null) {
-						doBreakpointCreated(breakpointInfo, evt.getCause());
+						addKnownBreakpoint(breakpointInfo, false);
+						// NB: we don't want to create this here as the address is 0s
+						//doBreakpointCreated(breakpointInfo, evt.getCause());
 					}
 					return;
 				}
 				breakpointInfo = knownBreakpoint;
+				Long initOffset = breakpointInfo.getOffset();
 				breakpointInfo.setBreakpoint(bpt);
-				doBreakpointModified(breakpointInfo, evt.getCause());
+				if (!breakpointInfo.getOffset().equals(0L)) {
+					if (initOffset.equals(0L)) {
+						doBreakpointCreated(breakpointInfo, evt.getCause());
+					}
+					else {
+						doBreakpointModified(breakpointInfo, evt.getCause());
+					}
+				}
 			}
 		}
 	}
@@ -1145,7 +1168,7 @@ public class DbgManagerImpl implements DbgManager {
 	 */
 	@Internal
 	public void doBreakpointCreated(DbgBreakpointInfo newInfo, DbgCause cause) {
-		addKnownBreakpoint(newInfo, false);
+		addKnownBreakpoint(newInfo, true);
 		getEventListeners().fire.breakpointCreated(newInfo, cause);
 	}
 
@@ -1174,6 +1197,7 @@ public class DbgManagerImpl implements DbgManager {
 			return;
 		}
 		getEventListeners().fire.breakpointDeleted(oldInfo, cause);
+		oldInfo.dispose();
 	}
 
 	protected void doBreakpointModifiedSameLocations(DbgBreakpointInfo newInfo,

Ghidra/Debug/Debugger-agent-dbgeng/src/main/java/agent/dbgeng/model/iface2/DbgModelTargetBreakpointSpec.java

@@ -59,16 +59,22 @@ public interface DbgModelTargetBreakpointSpec extends //
 
 	@Override
 	public default String getExpression() {
-		return getBreakpointInfo().getExpression();
+		DbgBreakpointInfo info = getBreakpointInfo();
+		return info == null ? null : info.getExpression();
 	}
 
 	public default long getNumber() {
-		return getBreakpointInfo().getNumber();
+		DbgBreakpointInfo info = getBreakpointInfo();
+		return info == null ? null : info.getNumber();
 	}
 
 	@Override
 	public default TargetBreakpointKindSet getKinds() {
-		switch (getBreakpointInfo().getType()) {
+		DbgBreakpointInfo info = getBreakpointInfo();
+		if (info == null) {
+			return TargetBreakpointKindSet.of();
+		}
+		switch (info.getType()) {
 			case BREAKPOINT:
 				return TargetBreakpointKindSet.of(TargetBreakpointKind.SW_EXECUTE);
 			case HW_BREAKPOINT:

Ghidra/Debug/Debugger-agent-dbgmodel/src/main/java/agent/dbgmodel/impl/dbgmodel/debughost/DebugHostMemoryImpl1.java

@@ -23,8 +23,10 @@ import com.sun.jna.platform.win32.OleAuto;
 import com.sun.jna.platform.win32.WTypes.BSTR;
 import com.sun.jna.platform.win32.WTypes.BSTRByReference;
 import com.sun.jna.platform.win32.WinDef.*;
+import com.sun.jna.platform.win32.WinNT.HRESULT;
 import com.sun.jna.platform.win32.COM.COMUtils;
 
+import agent.dbgeng.dbgeng.COMUtilsExtra;
 import agent.dbgmodel.dbgmodel.DbgModel;
 import agent.dbgmodel.dbgmodel.DbgModel.OpaqueCleanable;
 import agent.dbgmodel.dbgmodel.debughost.DebugHostContext;
@@ -55,8 +57,11 @@ public class DebugHostMemoryImpl1 implements DebugHostMemoryInternal {
 		Pointer pContext = context.getPointer();
 		ULONGLONG pulBufferSize = new ULONGLONG(bufferSize);
 		ULONGLONGByReference pulBytesRead = new ULONGLONGByReference();
-		COMUtils.checkRC(
+		HRESULT hr = jnaData.ReadBytes(pContext, location, buffer, pulBufferSize, pulBytesRead);
-			jnaData.ReadBytes(pContext, location, buffer, pulBufferSize, pulBytesRead));
+		if (hr.equals(COMUtilsExtra.E_NOTIMPLEMENTED)) {
+			return 0;
+		}
+		COMUtils.checkRC(hr);
 		long read = pulBytesRead.getValue().longValue();
 		buffer.position((int) (read + buffer.position()));
 		return read;

Ghidra/Debug/Debugger-agent-dbgmodel/src/main/java/agent/dbgmodel/impl/dbgmodel/main/ModelObjectImpl.java

@@ -156,6 +156,10 @@ public class ModelObjectImpl implements ModelObjectInternal {
 			Msg.debug(this, searchKey + " cannot be read");
 			return null;
 		}
+		if (hr.equals(COMUtilsExtra.E_NOINTERFACE)) {
+			Msg.debug(this, searchKey + " missing interface");
+			return null;
+		}
 		COMUtils.checkRC(hr);
 
 		ModelObject retval = getObjectWithMetadata(ppObject, ppMetadata);

Ghidra/Debug/Debugger-agent-dbgmodel/src/main/java/agent/dbgmodel/model/impl/DbgModel2TargetObjectImpl.java

@@ -249,15 +249,9 @@ public class DbgModel2TargetObjectImpl extends DefaultTargetObject<TargetObject,
 			}
 			if (proxy instanceof TargetExecutionStateful) {
 				if (isValid()) {
-					if (attributes.containsKey(TargetExecutionStateful.STATE_ATTRIBUTE_NAME)) {
+					TargetExecutionStateful stateful = (TargetExecutionStateful) proxy;
-						TargetExecutionStateful stateful = (TargetExecutionStateful) proxy;
+					TargetExecutionState state = stateful.getExecutionState();
-						TargetExecutionState state = stateful.getExecutionState();
+					attrs.put(TargetExecutionStateful.STATE_ATTRIBUTE_NAME, state);
-						attrs.put(TargetExecutionStateful.STATE_ATTRIBUTE_NAME, state);
-					}
-					else {
-						attrs.put(TargetExecutionStateful.STATE_ATTRIBUTE_NAME,
-							TargetExecutionState.INACTIVE);
-					}
 				}
 			}
 			if (proxy instanceof TargetAttacher) {

Ghidra/Debug/Debugger-agent-dbgmodel/src/main/java/agent/dbgmodel/model/impl/DbgModel2TargetRootImpl.java

@@ -285,8 +285,9 @@ public class DbgModel2TargetRootImpl extends DbgModel2DefaultTargetModelRoot
 		List<String> xpath = new ArrayList<>();
 		xpath.addAll(objPath);
 		xpath.addAll(ext);
+		// NB: fetchModelObject may have to be called with false
 		return AsyncUtils.sequence(TypeSpec.cls(DbgModelTargetObject.class)).then(seq -> {
-			getModel().fetchModelObject(xpath).handle(seq::next);
+			getModel().fetchModelObject(xpath, false).handle(seq::next);
 		}, TypeSpec.cls(TargetObject.class)).then((pobj, seq) -> {
 			if (pobj == null) {
 				seq.exit();

Ghidra/Debug/Debugger-agent-dbgmodel/src/main/java/agent/dbgmodel/model/impl/DelegateDbgModel2TargetObject.java

@@ -263,7 +263,14 @@ public class DelegateDbgModel2TargetObject extends DbgModel2TargetObjectImpl imp
 			}
 		}
 		if (proxy instanceof TargetExecutionStateful) {
-			setExecutionState(exec, "Refreshed");
+			if (proxy instanceof DbgModelTargetSession) {
+				if (state != DbgState.EXIT) {
+					setExecutionState(exec, "Refreshed");
+				}
+			}
+			else {
+				setExecutionState(exec, "Refreshed");
+			}
 		}
 	}
 
@@ -306,6 +313,7 @@ public class DelegateDbgModel2TargetObject extends DbgModel2TargetObjectImpl imp
 			return;
 		}
 		if (proxy instanceof DbgModelTargetRegisterContainer || //
+			proxy instanceof DbgModelTargetRegisterBank || //
 			proxy.getName().equals("Stack") ||
 			proxy.getName().equals("Debug")) {
 			requestAttributes(false);
@@ -403,9 +411,11 @@ public class DelegateDbgModel2TargetObject extends DbgModel2TargetObjectImpl imp
 			List<DelegateDbgModel2TargetObject> delegates = new ArrayList<>();
 			TargetObject stack =
 				(TargetObject) getCachedAttribute("Stack");
-			DbgModelTargetStack frames =
+			if (stack != null) {
-				(DbgModelTargetStack) stack.getCachedAttribute("Frames");
+				DbgModelTargetStack frames =
-			delegates.add((DelegateDbgModel2TargetObject) frames.getDelegate());
+					(DbgModelTargetStack) stack.getCachedAttribute("Frames");
+				delegates.add((DelegateDbgModel2TargetObject) frames.getDelegate());
+			}
 			DbgModelTargetRegisterContainer container =
 				(DbgModelTargetRegisterContainer) getCachedAttribute("Registers");
 			delegates.add((DelegateDbgModel2TargetObject) container.getDelegate());

Ghidra/Debug/Debugger-agent-dbgmodel/src/main/resources/agent/dbgmodel/model/impl/dbgmodel_schema.xml

@@ -454,6 +454,7 @@
 		<attribute name="rdi" schema="RegisterDescriptor" required="yes" />
 		<attribute name="rsi" schema="RegisterDescriptor" required="yes" />
 		<attribute name="rip" schema="RegisterDescriptor" required="yes" />
+		<attribute name="rbp" schema="RegisterDescriptor" required="yes" />
 		<attribute name="rsp" schema="RegisterDescriptor" required="yes" />
 		<attribute name="r8" schema="RegisterDescriptor" required="yes" />
 		<attribute name="r9" schema="RegisterDescriptor" required="yes" />
@@ -464,6 +465,31 @@
 		<attribute name="r14" schema="RegisterDescriptor" required="yes" />
 		<attribute name="r15" schema="RegisterDescriptor" required="yes" />
 		<attribute name="efl" schema="RegisterDescriptor" required="yes" />
+		<attribute name="dr0" schema="RegisterDescriptor" required="no" />
+		<attribute name="dr1" schema="RegisterDescriptor" required="no" />
+		<attribute name="dr2" schema="RegisterDescriptor" required="no" />
+		<attribute name="dr3" schema="RegisterDescriptor" required="no" />
+		<attribute name="dr6" schema="RegisterDescriptor" required="no" />
+		<attribute name="dr7" schema="RegisterDescriptor" required="no" />
+		<attribute name="cs" schema="RegisterDescriptor" required="no" />
+		<attribute name="ds" schema="RegisterDescriptor" required="no" />
+		<attribute name="es" schema="RegisterDescriptor" required="no" />
+		<attribute name="fs" schema="RegisterDescriptor" required="no" />
+		<attribute name="gs" schema="RegisterDescriptor" required="no" />
+		<attribute name="ss" schema="RegisterDescriptor" required="no" />
+		<attribute name="af" schema="RegisterDescriptor" required="no" />
+		<attribute name="cf" schema="RegisterDescriptor" required="no" />
+		<attribute name="df" schema="RegisterDescriptor" required="no" />
+		<attribute name="if" schema="RegisterDescriptor" required="no" />
+		<attribute name="of" schema="RegisterDescriptor" required="no" />
+		<attribute name="pf" schema="RegisterDescriptor" required="no" />
+		<attribute name="sf" schema="RegisterDescriptor" required="no" />
+		<attribute name="tf" schema="RegisterDescriptor" required="no" />
+		<attribute name="zf" schema="RegisterDescriptor" required="no" />
+		<attribute name="iopl" schema="RegisterDescriptor" required="no" />
+		<attribute name="vif" schema="RegisterDescriptor" required="no" />
+		<attribute name="vip" schema="RegisterDescriptor" required="no" />
+		<attribute name="rflags" schema="RegisterDescriptor" required="no" />
 		<attribute schema="OBJECT" />
 	</schema>
 	<schema name="Stack" canonical="yes" elementResync="NEVER" attributeResync="NEVER">

Ghidra/Debug/Debugger/src/main/java/ghidra/app/plugin/core/debug/gui/breakpoint/DebuggerPlaceBreakpointDialog.java

@@ -52,6 +52,8 @@ public class DebuggerPlaceBreakpointDialog extends DialogComponentProvider {
 	private JTextField fieldLength;
 	private JComboBox<String> fieldKinds;
 	private JTextField fieldName;
+	private PluginTool tool;
+	private String statusText = null;
 
 	public DebuggerPlaceBreakpointDialog() {
 		super(AbstractSetBreakpointAction.NAME, true, true, true, false);
@@ -150,10 +152,12 @@ public class DebuggerPlaceBreakpointDialog extends DialogComponentProvider {
 		this.fieldLength.setText(Long.toUnsignedString(length));
 		this.fieldKinds.setSelectedItem(TraceBreakpointKindSet.encode(kinds));
 		this.fieldName.setText("");
+		this.tool = tool;
 
 		validateAddress();
 
 		setTitle(title);
+		statusText = null;
 		tool.showDialog(this);
 	}
 
@@ -181,13 +185,20 @@ public class DebuggerPlaceBreakpointDialog extends DialogComponentProvider {
 		name = fieldName.getText();
 
 		ProgramLocation loc = new ProgramLocation(program, address);
-		service.placeBreakpointAt(loc, length, kinds, name).thenAccept(__ -> {
+		service.placeBreakpointAt(loc, length, kinds, name).exceptionally(ex -> {
-			close();
-		}).exceptionally(ex -> {
 			ex = AsyncUtils.unwrapThrowable(ex);
-			setStatusText(ex.getMessage(), MessageType.ERROR, true);
+			statusText = ex.getMessage(); // will be set when dialog is shown later
+			tool.showDialog(this);
 			return null;
 		});
+		close();
+	}
+
+	@Override
+	protected void dialogShown() {
+		if (statusText != null) {
+			setStatusText(statusText, MessageType.ERROR, true);
+		}
 	}
 
 	/* testing */

Ghidra/Debug/Debugger/src/main/java/ghidra/app/plugin/core/debug/service/model/DefaultThreadRecorder.java

@@ -164,15 +164,17 @@ public class DefaultThreadRecorder implements ManagedThreadRecorder {
 		if (regMapper == null) {
 			throw new IllegalStateException("Have not found register descriptions for " + thread);
 		}
-		if (!regMapper.getRegistersOnTarget().containsAll(registers)) {
+		List<TargetRegister> tRegs = registers.stream()
-			throw new IllegalArgumentException(
+				.map(regMapper::traceToTarget)
-				"All given registers must be recognized by the target");
+				.filter(Objects::nonNull)
+				.collect(Collectors.toList());
+		if (tRegs.size() < registers.size()) {
+			Msg.warn(this,
+				"All requested registers must be recognized by the model as registers");
 		}
 		if (registers.isEmpty()) {
 			return CompletableFuture.completedFuture(Map.of());
 		}
-		List<TargetRegister> tRegs =
-			registers.stream().map(regMapper::traceToTarget).collect(Collectors.toList());
 
 		Set<TargetRegisterBank> banks = getTargetRegisterBank(thread, frameLevel);
 		if (banks == null) {

Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/marker/MarkerManager.java

@@ -416,7 +416,7 @@ public class MarkerManager implements MarkerService {
 	}
 
 	private Color getBackgroundColor(Program program, MarkerSetCacheEntry entry, Address address) {
-		return entry.getBackgroundColor(address);
+		return entry == null ? null : entry.getBackgroundColor(address);
 	}
 
 	public GoToService getGoToService() {