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Re: iwlwifi warn_slowpath with 3.*

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Please enable CONFIG_FRAME_POINTERS
Emmanuel Grumbach
egrumbach@xxxxxxxxx


On Thu, May 3, 2012 at 9:53 AM, Antonio Quartulli <ordex@xxxxxxxxxxxxx> wrote:
> On Wed, May 02, 2012 at 06:21:02PM +0200, Antonio Quartulli wrote:
>> On Wed, May 02, 2012 at 11:39:14AM -0400, John W. Linville wrote:
>> > 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@xxxxxxxxx> 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.
>> >
>> > Does this help?
>> >
>> >     https://bugzilla.redhat.com/show_bug.cgi?id=815998#c18
>>
>> I applied patch in comment 17 on linux-3.3.4. IT didn't help but this time I got
>> the WARNING even with debug=1. Log is attached.
>>
>
>
> Is there any particular kernel debugging option I could enable to make the log
> more verbose?
>
>
> Cheers,
>
>
>
> --
> Antonio Quartulli
>
> ..each of us alone is worth nothing..
> Ernesto "Che" Guevara
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