diff options
| author | Cong Wang <xiyou.wangcong@gmail.com> | 2020-07-25 13:17:07 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-28 17:41:23 -0700 |
| commit | 608b4adab17889576c6636311f495b1a52418c69 (patch) | |
| tree | db5756d038d46cb1484d2b86e3b998b0614d23f0 | |
| parent | 1255457429309e723b1ee619bb6bb94a9be2a939 (diff) | |
net_sched: initialize timer earlier in red_init()
When red_init() fails, red_destroy() is called to clean up.
If the timer is not initialized yet, del_timer_sync() will
complain. So we have to move timer_setup() before any failure.
Reported-and-tested-by: syzbot+6e95a4fabf88dc217145@syzkaller.appspotmail.com
Fixes: aee9caa03fc3 ("net: sched: sch_red: Add qevents "early_drop" and "mark"")
Cc: Petr Machata <petrm@mellanox.com>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/sched/sch_red.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c index 4cc0ad0b1189..deac82f3ad7b 100644 --- a/net/sched/sch_red.c +++ b/net/sched/sch_red.c @@ -333,6 +333,10 @@ static int red_init(struct Qdisc *sch, struct nlattr *opt, struct nlattr *tb[TCA_RED_MAX + 1]; int err; + q->qdisc = &noop_qdisc; + q->sch = sch; + timer_setup(&q->adapt_timer, red_adaptative_timer, 0); + if (!opt) return -EINVAL; @@ -341,10 +345,6 @@ static int red_init(struct Qdisc *sch, struct nlattr *opt, if (err < 0) return err; - q->qdisc = &noop_qdisc; - q->sch = sch; - timer_setup(&q->adapt_timer, red_adaptative_timer, 0); - err = __red_change(sch, tb, extack); if (err) return err; |