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Date:	Sun, 19 Oct 2008 23:38:11 -0700 (PDT)
From:	David Miller <>
Subject: Re: [PATCH] pkt_sched: sch_generic: Fix oops in sch_teql

From: Jarek Poplawski <>
Date: Sun, 19 Oct 2008 01:09:38 +0200

> pkt_sched: sch_generic: Fix oops in sch_teql
> After these commands:
> # modprobe sch_teql
> # tc qdisc add dev eth0 root teql0
> # tc qdisc del dev eth0 root
> we get an oops in teql_destroy() when spin_lock is taken from a null
> qdisc_sleeping pointer. It's because at the moment teql0 dev haven't
> been activated yet, and a qdisc_root_sleeping() is pointing to noop
> qdisc's netdev_queue with qdisc_sleeping uninitialized. This patch
> fixes this both for noop and noqueue netdev_queues to avoid similar
> problems in the future.
> Signed-off-by: Jarek Poplawski <>
> [regression in 2.6.27]

Applied and will queue to -stable, thanks Jarek.
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