Re: Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode) causing crashes

[Johan Hedberg <johan.hedberg@gmail.com>]

Hi Christopher,

On Wed, Apr 03, 2013, Christopher Waid wrote:
> On 03/20/2013 05:45 PM, Christopher Waid wrote:
> >On 03/20/2013 02:57 PM, Gustavo Padovan wrote:
> >>* Christopher Waid <chris@thinkpenguin.com> [2013-03-20 14:13:14 -0400]:
> >>
> >>>On 03/18/2013 03:13 PM, Greg KH wrote:
> >>>>On Mon, Mar 18, 2013 at 02:57:43PM -0400, Christopher Waid wrote:
> >>>>>Bus 001 Device 007: ID 0a12:0001 Cambridge Silicon Radio, Ltd
> >>>>>Bluetooth Dongle (HCI mode)
> >>>>>
> >>>>>Code for a CSR bluetooth chipset appears broken in recent kernel
> >>>>>releases. After a device is paired the kernel panics. This has been
> >>>>>tested with a dozen USB dongles / systems and is consistently a
> >>>>>problem. On the rare occasion it might not cause a kernel panic
> >>>>>although it will definitely still crash after a few minutes. This
> >>>>>does not happen with older kernel releases.
> >>>>What kernel version is crashing, and what is the exact text of the
> >>>>kernel panic?
> >>>It goes black and disappears off the screen with a lot of other text
> >>>so I'm unsure.
> >>This text you are seeing in probably the crash dump of the
> >>failure, could you
> >>try to take a picture of the screen so we can check if there is
> >>some useful
> >>information there.
> >>
> >>Also if the kernel doesn't panic instantly you could check if
> >>there is some
> >>issue in the kernel log after pairing and save it somewhere so
> >>we can take a
> >>look. Use the 3.8 kernel.
> >>
> >
> >I'm attaching kern.log and a picture of the screen when it crashes
> >/ dumps.
> >
> 
> I was wondering if anybody had a chance to look into this. I don't
> seem to be on the mailing list even though I attempted to subscribe.

I never saw the mail with the attachments from you. It was probably
blocked from the linux-bluetooth list (probably linux-usb too) due to a
too big size. You might want to put the picture on some website and just
send the link to it in your email.

Johan