diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c index 7d4feae2fae369e5d9d9a7fa02a3390785ace366..60754f366ab7bc27fa44fdc19a581f80cb178328 100644 --- a/net/sched/sch_sfq.c +++ b/net/sched/sch_sfq.c @@ -652,6 +652,10 @@ static int sfq_change(struct Qdisc *sch, struct nlattr *opt, if (!p) return -ENOMEM; } + if (ctl->limit == 1) { + NL_SET_ERR_MSG_MOD(extack, "invalid limit"); + return -EINVAL; + } sch_tree_lock(sch); if (ctl->quantum) q->quantum = ctl->quantum;