diff --git a/dsf-gdb/org.eclipse.cdt.dsf.gdb/src/org/eclipse/cdt/dsf/gdb/service/GDBProcesses_7_2.java b/dsf-gdb/org.eclipse.cdt.dsf.gdb/src/org/eclipse/cdt/dsf/gdb/service/GDBProcesses_7_2.java
index bc49c5c775f..c4d8d637988 100644
--- a/dsf-gdb/org.eclipse.cdt.dsf.gdb/src/org/eclipse/cdt/dsf/gdb/service/GDBProcesses_7_2.java
+++ b/dsf-gdb/org.eclipse.cdt.dsf.gdb/src/org/eclipse/cdt/dsf/gdb/service/GDBProcesses_7_2.java
@@ -120,6 +120,15 @@ public class GDBProcesses_7_2 extends GDBProcesses_7_1 {
 		if (fBackend.getSessionType() == SessionType.REMOTE && !fBackend.getIsAttachSession()) {
 			return false;
 		}
+		
+		// Multi-process does not work for all-stop right now
+		IMIRunControl runControl = getServicesTracker().getService(IMIRunControl.class);
+		if (runControl != null && runControl.getRunMode() == MIRunMode.ALL_STOP) {
+			// Only one process is allowed in all-stop (for now)
+			return getNumConnected() == 0;
+			// NOTE: when we support multi-process in all-stop mode,
+			// we will need to interrupt the target to when doing the attach.
+		}
 
 		return true;
 	}