diff --git a/executer/kernel/mcctrl/syscall.c b/executer/kernel/mcctrl/syscall.c
index 6b8dc8bc..a9c605f7 100644
--- a/executer/kernel/mcctrl/syscall.c
+++ b/executer/kernel/mcctrl/syscall.c
@@ -348,6 +348,7 @@ retry_alloc:
 		printk("WARNING: coudln't alloc wait queue head, retrying..\n");
 		goto retry_alloc;
 	}
+	memset(wqhln, 0, sizeof(struct wait_queue_head_list_node));
 
 	/* Prepare per-thread wait queue head */
 	wqhln->task = current;
@@ -527,6 +528,7 @@ retry_alloc:
 		printk("WARNING: coudln't alloc wait queue head, retrying..\n");
 		goto retry_alloc;
 	}
+	memset(wqhln, 0, sizeof(struct wait_queue_head_list_node));
 
 	/* Prepare per-thread wait queue head */
 	wqhln->task = current;