#10748 HIGH 11.2.0-: libertas crashes kernel in resume

Zarro Boogs per Child bugtracker at laptop.org
Sat May 14 07:51:19 EDT 2011

#10748: libertas crashes kernel in resume
           Reporter:  greenfeld  |       Owner:  dsd                              
               Type:  defect     |      Status:  new                              
           Priority:  high       |   Milestone:  11.2.0-M4                        
          Component:  kernel     |     Version:  Development build as of this date
         Resolution:             |    Keywords:  libertas                         
        Next_action:  diagnose   |    Verified:  0                                
Deployment_affected:             |   Blockedby:  10414                            
           Blocking:             |  

Comment(by dsd):

 Thanks! Your logs highlight a bug in the libertas driver, where all
 commands sent to the hardware should be numbered with consecutive sequence
 numbers, but the driver gets confused and sends commands out-of-order and
 this appears to confuse the hardware, leading to the crash at that exact

 This is fixed in the kernel in 11.2.0 build 19. I'm not 100% sure if this
 will fix it, because your logs also show other instances of badly numbered
 commands yet the device seemed to respond OK in those cases. But its
 certainly a plausible fix.

 The kernel in build 19 doesn't have the extremely verbose messages in the
 test kernel above, so it should be as easy as it was before to reproduce
 this. nevertheless, if you do make it crash, please post new logs.

Ticket URL: <http://dev.laptop.org/ticket/10748#comment:16>
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