From: Cong Wang <xiyou.wangc...@gmail.com>
Date: Mon, 18 Dec 2017 14:34:26 -0800
> First, the check of &q->ring.queue against NULL is wrong, it
> is always false. We should check the value rather than the address.
>
> Secondly, we need the same check in pfifo_fast_reset() too,
> as both ->reset() and ->destroy() are called in qdisc_destroy().
>
> Fixes: c5ad119fb6c0 ("net: sched: pfifo_fast use skb_array")
> Reported-by: syzbot <syzkal...@googlegroups.com>
> Cc: John Fastabend <john.fastab...@gmail.com>
> Signed-off-by: Cong Wang <xiyou.wangc...@gmail.com>
Applied, thanks Cong.
