Re: [Bluez-devel] Soft lockup

[Bastien Nocera <hadess@hadess.net>]

On Sun, 2007-05-27 at 18:28 +0200, Marcel Holtmann wrote:
> Hi Bastien,
> 
> > > > Here's what I could capture from the i386 crash:
> > > > BUG warning at lib/kref.c:32/kref_get()
> > > 
> > > any chance you can test a 2.6.22-rc3 kernel. We fixed some potential
> > > problems in RFCOMM and Greg pushed some driver model changes that might
> > > make this go away. I really have no idea what triggers this at the
> > > moment. However I would like to see a simple reproducer.
> > 
> > Works with 2.6.22-rc3 (for a meaning of works, my code doesn't seem to
> > work, but that's a different matter).
> 
> so this is actually fixed now within the upstream kernel. This also
> means that I didn't really bother about older kernels.

Any plans for a backport? It would be most useful, at least for testing.

> > I can reproduce the crash at will on 2 different machines. It might be
> > easier to create a minimal reproducer if you have a debug version of the
> > serial service.
> 
> Actually using SIGUSR2 should switch debugging mode on/off, but I think
> we forgot to introduce that within the service implementation. Need to
> fix that at some point.

It would also be useful if the different functions could have debugging
output of their different entry points, after argument parsing.

-- 
Bastien Nocera <hadess@hadess.net> 


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