From: Jarek Poplawski <jarkao2@gmail.com>
Date: Mon, 20 Oct 2008 06:37:47 +0000 (-0700)
Subject: pkt_sched: sch_generic: Fix oops in sch_teql
X-Git-Tag: v2.6.27.5~42
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9a8eac41549d7ae0e40744177edd8dc8d59592e4;p=pandora-kernel.git

pkt_sched: sch_generic: Fix oops in sch_teql

[ Upstream commit 9f3ffae0dbce491a3e9871b686342fd5aa854f05 ]

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 <jarkao2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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