Index: kernel/generic/src/ipc/ipc.c
===================================================================
--- kernel/generic/src/ipc/ipc.c	(revision f0e825dbfd4e7f5627b25620103eb25ae092c849)
+++ kernel/generic/src/ipc/ipc.c	(revision 3097958ce2c8b03292215f7bebb365aa73d62cb7)
@@ -350,4 +350,5 @@
 	} else {
 		atomic_inc(&phone->active_calls);
+		kobject_add_ref(phone->kobject);
 		call->sender = caller;
 		call->active = true;
@@ -563,4 +564,5 @@
 		list_remove(&request->ab_link);
 		atomic_dec(&request->caller_phone->active_calls);
+		kobject_put(request->caller_phone->kobject);
 	} else if (!list_empty(&box->calls)) {
 		/* Count received call */
@@ -707,4 +709,5 @@
 
 	atomic_dec(&call->caller_phone->active_calls);
+	kobject_put(call->caller_phone->kobject);
 
 	SYSIPC_OP(request_forget, call);