2013-03-21 11:51:27

by Sergio Callegari

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Subject: Kernel panic on kernel 3.8.x when closing bluetooth dun connection

Hi,

This is just a short note to let you know that 3.8.x panics on closing a
bluetooth dun connection.

This is seen with the ubuntu /mainline/ kernel 3.8.0 and 3.8.2 that should
vanilla kernels with no ubuntu tweaking.

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.

kernels 3.7.0 and 3.7.8 do not panic.

Thanks for the attention and best regards,

Sergio Callegari