Index: kernel/generic/src/proc/task.c
===================================================================
--- kernel/generic/src/proc/task.c	(revision 40240b10b69872450d79284e32440e06b785815d)
+++ kernel/generic/src/proc/task.c	(revision fe12f9f4a762ce1e8283c22cdb1d81da41f8cdda)
@@ -178,4 +178,5 @@
 		ipc_phone_connect(&ta->phones[0], ipc_phone_0);
 	atomic_set(&ta->active_calls, 0);
+	list_initialize(&ta->sync_box_head);
 
 	mutex_initialize(&ta->futexes_lock, MUTEX_PASSIVE);