Re: iwlwifi warn_slowpath with 3.*

[Antonio Quartulli <ordex@autistici.org>]

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On Wed, May 02, 2012 at 10:08:46AM +0300, Emmanuel Grumbach wrote:
> On Wed, May 2, 2012 at 12:19 AM, Venkataraman, Meenakshi
> <meenakshi.venkataraman@intel.com> wrote:
> > Hi Antonio,
> >
> >>> it seems so. It happens at least once at boot time.
> >>> I will try wireless-testing and see what happens. Then I will apply your patch.
> >>
> >>The problem is there either with wireless-testing and with
> >>wireless-testing+your_patch.
> >>
> >>If it can somehow help, I also got several stack trace regarding intel_iova
> >>functions. But then the I got kernel panic and I was not able to copy the
> >>messages.
> >
> > [MV] Depending on how you set it up, perhaps the stack trace was saved in one of the syslog files in /var/log/...
> >
> > Thanks!
> > Meenakshi
> >
> 
> Can you please re-run with debug=1 and send the whole log ?
> This will give a better indication on when the issue occurs.

I tried but I haven't seen the WARNING anymore...it smell like a race condition
(at least this is what is usually "fixed" by printings :-D).

I also retried to insert the module without the debug option but I didn't get
the error anyway. This means that I get the error only at boot.

I will try to make more tests and eventually report what I see/understand.

Thank you for the work done so far!


Cheers,

-- 
Antonio Quartulli

..each of us alone is worth nothing..
Ernesto "Che" Guevara

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