From: Marcel Holtmann <marcel@holtmann.org>
To: BlueZ development <bluez-devel@lists.sourceforge.net>
In-Reply-To: <1180277003.3030.18.camel@cookie.hadess.net>
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Date: Sun, 27 May 2007 18:28:28 +0200
Message-Id: <1180283308.21432.67.camel@aeonflux.holtmann.net>
Mime-Version: 1.0
Subject: Re: [Bluez-devel] Soft lockup
Reply-To: BlueZ development <bluez-devel@lists.sourceforge.net>
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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.

> 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.

Regards

Marcel


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