linux-kernel - Re: [ipw3945-devel] hang on 2.6.33-rc4

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Date:	Sat, 16 Jan 2010 19:30:56 +0100
From:	Norbert Preining <preining@...ic.at>
To:	reinette chatre <reinette.chatre@...el.com>
Cc:	"ipw3945-devel@...ts.sourceforge.net" 
	<ipw3945-devel@...ts.sourceforge.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [ipw3945-devel] hang on 2.6.33-rc4

On Fr, 15 Jan 2010, reinette chatre wrote:
> > kernel 2.6.33-rc4
> > 
> > I am having repeatable complete hard lockups on my laptop with 2.6.33-rc4.
> > 2.6.32.3 works fine.
> > 
> > I believe that it is related to the network, because sometimes I can
> > actually log in (gnomes session) and as soon as I do some network
> > related suddenly hard hang, not even Sysrq working anymore.
> > 
> > Interestingly it only happens at a specific AP where the ESSID is
> > hidden (at work). At home I can work without any problems (ESSID not
> > hidden).
> > 
> > Unfortunately I cannot set up a serial console or similar.
> 
> Does that mean no netconsole either? Does anything show up in the logs?
> Is it easy to reproduce? If so, perhaps you can have increased debug at
> that time and hopefully something will be captured in the logs when the
> problem occurs.

Before I can test this on monday, something else, I just got BUG_ON:
Jan 17 03:28:58 mithrandir kernel: [34535.207253] iwlagn 0000:06:00.0: iwl_tx_agg_start on ra = 00:0a:79:eb:56:10 tid = 0
Jan 17 03:28:58 mithrandir kernel: [34535.331218] iwlagn 0000:06:00.0: BUG_ON idx doesn't match seq control idx=139, seq_idx=3435, seq=54960
Jan 17 03:28:58 mithrandir kernel: [34535.331275] iwlagn 0000:06:00.0: Received BA when not expected
Jan 17 03:28:58 mithrandir kernel: [34535.331816] iwlagn 0000:06:00.0: BUG_ON idx doesn't match seq control idx=146, seq_idx=3442, seq=55072
Jan 17 03:28:58 mithrandir kernel: [34535.331915] iwlagn 0000:06:00.0: Received BA when not expected
Jan 17 03:28:58 mithrandir kernel: [34535.332419] iwlagn 0000:06:00.0: BUG_ON idx doesn't match seq control idx=170, seq_idx=3466, seq=55456

Actually many many many of these lines.

Best wishes

Norbert
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Norbert Preining            preining@...ist.ac.jp, logic.at, debian.org}
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