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

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Message-ID: <20080803095036.GA3017@ami.dom.local>
Date:	Sun, 3 Aug 2008 11:50:36 +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 03, 2008 at 11:29:26AM +0200, Jarek Poplawski wrote:
...
> After some re-checking one more question: why do you think this
> qdisc_root_lock() is safe as sch_tree_lock() (or anywhere else)? It
> seems, eg. during deactivation it can get root_lock of qdisc_default,
> and proceed with another qdisc?

I've just seen this new patch with ASSERT_RTNL(), so now I understand.

Jarek P.
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