linux-kernel - Re: Kernel oops with bluetooth usb dongle

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Date:	Thu, 21 Feb 2008 15:30:58 +0800
From:	"Dave Young" <hidave.darkstar@...il.com>
To:	"Thomas Gleixner" <tglx@...utronix.de>
Cc:	"Marcel Holtmann" <marcel@...tmann.org>,
	"Quel Qun" <kelk1@...cast.net>,
	LKML <linux-kernel@...r.kernel.org>,
	"Jiri Kosina" <jkosina@...e.cz>, "Ingo Molnar" <mingo@...e.hu>
Subject: Re: Kernel oops with bluetooth usb dongle

On Wed, Feb 20, 2008 at 4:11 PM, Thomas Gleixner <tglx@...utronix.de> wrote:
> On Wed, 20 Feb 2008, Thomas Gleixner wrote:
>  > On Tue, 19 Feb 2008, Marcel Holtmann wrote:
>
> > > I don't really have any idea. Nothing has been changed in this area for a
>  > > couple of years. The command TX timeout is the timeout that indicates a
>  > > missing answer to a command sent down to the Bluetooth chip.
>  > >
>  > > However this involves some atomic and tasklet stuff. Did we have some changes
>  > > that I missed and might now render this usage as broken.
>  >
>  > Not that I'm aware off, but this might as well be some old use after
>  > free bug which got exposed by some unrelated change. The good news is
>  > that it is reproducible. I'll hack up some nasty debug patch which
>  > lets us - hopefully - decode where the timer was armed.
>
>  Quel, before I do that, is there any chance that you retest with the
>  latest mainline git version ?
>
>  http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.25-rc2-git4.bz2

And please test with this patch as well:

http://lkml.org/lkml/2008/2/20/121

>
>  Is the delta which applies on top of rc2.
>
>
>
>  Thanks,
>
>         tglx
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