netdev - Re: sfq dump broken in 2.6.27-rc1

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Message-Id: <20080806.181327.139395860.davem@davemloft.net>
Date:	Wed, 06 Aug 2008 18:13:27 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	stephen.hemminger@...tta.com
Cc:	kaber@...sh.net, netdev@...r.kernel.org
Subject: Re: sfq dump broken in 2.6.27-rc1

From: Stephen Hemminger <stephen.hemminger@...tta.com>
Date: Wed, 6 Aug 2008 18:02:37 -0700

> With only one sfq (on eth0), I am getting multiple results from
> 'tc qdisc ls'
> 
> # tc qdisc ls
> qdisc sfq 8001: dev eth0 root limit 127p quantum 1514b 
> qdisc sfq 8001: dev eth0 root limit 127p quantum 1514b 
> qdisc sfq 8001: dev eth0 root limit 127p quantum 1514b 
> qdisc sfq 8001: dev eth0 root limit 127p quantum 1514b 
> qdisc sfq 8001: dev eth0 root limit 127p quantum 1514b 
> 
> Still bisecting, since there is no obvious reason for the sudden borkage.

Don't bother bisecting, it will take longer than the obvious
set of debug printk's you could add to net/sched/sch_api.c:tc_dump_qdisc().

Please use a "mindful" approach to debugging this instead of
a "mindless" one like bisect :-)
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