Index: kernel/generic/src/ipc/sysipc.c
===================================================================
--- kernel/generic/src/ipc/sysipc.c	(revision d470ec88d38377c7e43945d185aa298311d37909)
+++ kernel/generic/src/ipc/sysipc.c	(revision 3dab10aedd9af0b1f1a7abad9639f58b0ffcd204)
@@ -199,4 +199,6 @@
 			irq_spinlock_lock(&phone->callee->lock, true);
 			list_remove(&phone->link);
+			/* Drop callee->connected_phones reference */
+			kobject_put(phone->kobject);
 			phone->state = IPC_PHONE_SLAMMED;
 			irq_spinlock_unlock(&phone->callee->lock, true);