netdev - Re: [BUG] NULL pointer dereference in skb

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Message-ID: <20080810190458.GA7279@ami.dom.local>
Date:	Sun, 10 Aug 2008 21:04:58 +0200
From:	Jarek Poplawski <jarkao2@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	emil.s.tantilov@...el.com, jeffrey.t.kirsher@...el.com,
	netdev@...r.kernel.org
Subject: Re: [BUG] NULL pointer dereference in skb_dequeue

On Sun, Aug 10, 2008 at 12:32:40AM +0200, Jarek Poplawski wrote:
...
> I guess you're thinking about something bigger, but here is a little,
> maybe unrelated idea, which I think looks reasonable: after changing
> the qdiscs, we should care more about pending activities on the "real"
> one instead of the noop.

Hmm.. Actually, it's completely unreasonable. Let's forget this.

Jarek P.

> ---
> 
>  net/sched/sch_generic.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
> index 7cf83b3..7bce88d 100644
> --- a/net/sched/sch_generic.c
> +++ b/net/sched/sch_generic.c
> @@ -658,7 +658,7 @@ static bool some_qdisc_is_running(struct net_device *dev, int lock)
>  		int val;
>  
>  		dev_queue = netdev_get_tx_queue(dev, i);
> -		q = dev_queue->qdisc;
> +		q = dev_queue->qdisc_sleeping;
>  		root_lock = qdisc_lock(q);
>  
>  		if (lock)
--
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