diff --git a/ipc/sem.c b/ipc/sem.c
index bf534c74293e1acf4bfdc9fdc12da007486940af..3a58188733d80e7dbccc4a6e3e44d6708e1f9dcd 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -1154,7 +1154,7 @@ static void freeary(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp)
 		un->semid = -1;
 		list_del_rcu(&un->list_proc);
 		spin_unlock(&un->ulp->lock);
-		kfree_rcu(un, rcu);
+		kvfree_rcu(un, rcu);
 	}
 
 	/* Wake up all pending processes and let them fail with EIDRM. */
@@ -1937,7 +1937,8 @@ static struct sem_undo *find_alloc_undo(struct ipc_namespace *ns, int semid)
 	rcu_read_unlock();
 
 	/* step 2: allocate new undo structure */
-	new = kzalloc(sizeof(struct sem_undo) + sizeof(short)*nsems, GFP_KERNEL);
+	new = kvzalloc(sizeof(struct sem_undo) + sizeof(short)*nsems,
+		       GFP_KERNEL);
 	if (!new) {
 		ipc_rcu_putref(&sma->sem_perm, sem_rcu_free);
 		return ERR_PTR(-ENOMEM);
@@ -1949,7 +1950,7 @@ static struct sem_undo *find_alloc_undo(struct ipc_namespace *ns, int semid)
 	if (!ipc_valid_object(&sma->sem_perm)) {
 		sem_unlock(sma, -1);
 		rcu_read_unlock();
-		kfree(new);
+		kvfree(new);
 		un = ERR_PTR(-EIDRM);
 		goto out;
 	}
@@ -1960,7 +1961,7 @@ static struct sem_undo *find_alloc_undo(struct ipc_namespace *ns, int semid)
 	 */
 	un = lookup_undo(ulp, semid);
 	if (un) {
-		kfree(new);
+		kvfree(new);
 		goto success;
 	}
 	/* step 5: initialize & link new undo structure */
@@ -2420,7 +2421,7 @@ void exit_sem(struct task_struct *tsk)
 		rcu_read_unlock();
 		wake_up_q(&wake_q);
 
-		kfree_rcu(un, rcu);
+		kvfree_rcu(un, rcu);
 	}
 	kfree(ulp);
 }