#11462 HIGH 1.75-so: Kernel crash seen initializing EC support on a 1.75 B1

Zarro Boogs per Child bugtracker at laptop.org
Tue Nov 15 13:34:48 EST 2011

#11462: Kernel crash seen initializing EC support on a 1.75 B1
 Reporter:  greenfeld  |                 Owner:                                   
     Type:  defect     |                Status:  new                              
 Priority:  high       |             Milestone:  1.75-software                    
Component:  kernel     |               Version:  Development build as of this date
 Keywords:             |           Next_action:  diagnose                         
 Verified:  0          |   Deployment_affected:                                   
Blockedby:             |              Blocking:                                   
 I saw a kernel crash rebooting an XO while it was initializing EC support
 on a 1.75 B1.

 This may be related to #11460, as this accelerometer initialization issue
 also occurs on B1s.

 kernel-3.0.0_xo1.75-20111114.1639.olpc.184b135.armv7l.rpm was being used.
 Logs will be attached.

 [    2.036737] lis3lv02d: joystick initialization failed
 [    2.055073] OLPC XO-1.75 Embedded Controller driver probed
 [    2.070869] olpc-ec-1.75: SSP reports TX underrun
 [    2.085555] kernel BUG at kernel/workqueue.c:1037!
 [    2.100153] Unable to handle kernel NULL pointer dereference at virtual
 address 00000000

Ticket URL: <http://dev.laptop.org/ticket/11462>
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