From: Johannes Berg <johannes@sipsolutions.net>
To: Breno Leitao <leitao@linux.vnet.ibm.com>
Cc: Jiri Slaby <jirislaby@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
netdev <netdev@vger.kernel.org>,
Michael Wu <flamingice@sourmilk.net>,
linux-wireless <linux-wireless@vger.kernel.org>
Subject: Re: q == &noop_qdisc warning from 802.11 code
Date: Wed, 23 Jul 2008 16:53:05 +0200 [thread overview]
Message-ID: <1216824786.13587.6.camel@johannes.berg> (raw)
In-Reply-To: <48873502.1030106@linux.vnet.ibm.com>
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> I also hit a bug related to noop_qdisc running the net-next kernel.
> I hit this bug every time I run "ifconfig eth0 mtu 9000; ifconfg eth0 1500" for any
> interface (tested against s2io and e1000) that is up, otherwise the bug isn't
> reproducible.
>
> The bug dumps the following calltrace:
>
> [root@io-dolphins net-next-2.6]# ifconfig eth0 mtu 9000; ifconfig eth0 mtu 1500
> ------------[ cut here ]------------
> kernel BUG at net/core/dev.c:1328!
> void __netif_schedule(struct Qdisc *q)
> {
> BUG_ON(q == &noop_qdisc);
>
> So, somehow we're reaching __netif_schedule() using a noop_qdisc.
Yeah, I'm looking into it. Just removing the netif_wake calls in mlme.c
might work.
johannes
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next prev parent reply other threads:[~2008-07-23 14:53 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-23 12:28 q == &noop_qdisc warning from 802.11 code Jiri Slaby
2008-07-23 13:41 ` Breno Leitao
2008-07-23 14:53 ` Johannes Berg [this message]
2008-07-23 21:22 ` David Miller
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