Bug 12871

Summary: usb bluetooth crashes system
Product: Drivers Reporter: Rafael J. Wysocki (rjw)
Component: BluetoothAssignee: drivers_bluetooth (drivers_bluetooth)
Status: CLOSED CODE_FIX    
Severity: normal CC: james
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 2.6.29-rc5 Subsystem:
Regression: Yes Bisected commit-id:
Bug Depends on:    
Bug Blocks: 12398    

Description Rafael J. Wysocki 2009-03-14 11:58:30 UTC 
Subject    : 2.6.29-rc5+: usb bluetooth crashes system
Submitter  : Pavel Machek <pavel@ucw.cz>
Date       : 2009-03-10 11:23
References : http://marc.info/?l=linux-kernel&m=123668450400940&w=4
Notify-Also : Greg KH <greg@kroah.com>

This entry is being used for tracking a regression from 2.6.28.  Please don't
close it until the problem is fixed in the mainline.
Comment 1 Pavel Machek 2009-03-16 04:26:40 UTC 
Ok, more info:

It works ok in 2.6.28.

It is repeatable by both ^c-ing the pppd or pressing red key on telephone to terminate the connection. Machine dies a brief moment after disconnect; "connection terminated" still gets to the log.

It happened many times in X; sometimes I see keyboard LEDs panic blink, sometimes not.

When repeated on the console, I get

BUG: spinlock bad magic on CPU#0, swapper/0

(and hard hang).
Comment 2 Rafael J. Wysocki 2009-04-07 21:17:38 UTC 
References : http://lkml.org/lkml/2009/4/7/103