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SubjectRe: [ipw3945-devel] hang on 2.6.33-rc4
From
Hi Reinette,

On Fr, 15 Jan 2010, reinette chatre wrote:
> > 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.

Ok, I can confirm that setting up the network is not the problem, nor
is it pinging other hosts. But ssh-ing into another server
made it go boom. From the screenshot I attach it looks like something
in TCP code (that explains why it does not happen in pings), below
I see tcp_data_snd_check

I managed to swithc in time to a console with tail -f syslog before
it hard locked up. The log files are empty, but I got a screenshot photo
which has some hopefully useful information. I cannot scroll up or down
anymore ...

If you want me to create a bug report or you create one in bugzilla,
I can also upload it htere, but I attach it for now.

Best wishes

Norbert
------------------------------------------------------------------------
Norbert Preining preining@{jaist.ac.jp, logic.at, debian.org}
JAIST, Japan TU Wien, Austria Debian TeX Task Force
DSA: 0x09C5B094 fp: 14DF 2E6C 0307 BE6D AD76 A9C0 D2BF 4AA3 09C5 B094
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