Kernel panic on stable kernel 3.8.2 when closing bluetooth dun connection

From: Sergio Callegari
Date: Wed Mar 20 2013 - 06:18:54 EST


This is just a short note to let you know that 3.8.2 panics on closing a bluetooth dun connection.

This is seen with the ubuntu mainline kernel 3.8.2 that should be a vanilla stable kernel.

Observed on a DELL E6500 which has BCM2046 Bluetooth while connecting to the
internet using a Samsung Galaxy S mobile phone via bluetooth DUN through the network manager. When network manager is asked to close the connection, the kernel panics, the system drops out of Xorg, shows for a couple of seconds a long log including the words 'panic' and 'not synching', the numlock, caps-lock keys start flashing and the system freezes.

It is 100% repeatable.

The ubuntu kernel, that is a 3.5.0 plus ubuntu tweaks, backports, etc does not panic.

Thanks for the attention and best regards,

Sergio Callegari
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