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Re: [3.4-rc1][Regression][network wireless] 'task xxxx blocked for more than 120 seconds' after resume

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On czwartek, 5 kwietnia 2012 o 20:56:23 Johannes Berg wrote:
> On Thu, 2012-04-05 at 20:37 +0200, Maciej Rutecki wrote:
> > On czwartek, 5 kwietnia 2012 o 12:32:54 Stanislaw Gruszka wrote:
> > > On Tue, Apr 03, 2012 at 10:07:49AM +0200, Johannes Berg wrote:
> > > > -ilw
> > > > +netdev
> > > > 
> > > > I have no idea what this could be, but I'm almost certain it's not
> > > > caused by our wireless driver. Looks more like rtl8169 is to blame.
> > > 
> > > I'm not sure. Looks like there is deadlock or infinite loop in process
> > > that holds rtnl lock. This can be wireless driver, wired driver or
> > > generic network code bug.
> > > 
> > > Maciej, please recompile with CONFIG_LOCKDEP and check if it will not
> > > find any deadlock. If not, when problem will happen please do
> > 
> > Did you mean "CONFIG_LOCKDEP_SUPPORT"?
> 
> No, _SUPPORT means you could enable CONFIG_LOCKDEP, but we would like to
> see this with CONFIG_LOCKDEP enabled.
> 
> johannes

Dmesg when CONFIG_LOCKDEP is set:

http://mrutecki.pl/download/kernel/3.4-rc1/netdev_resume/dmesg-lockdep.txt

Regards

-- 
Maciej Rutecki
http://www.mrutecki.pl
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